Source: https://patents.google.com/patent/JP4896921B2/en
Timestamp: 2020-01-17 21:42:49
Document Index: 335698083

Matched Legal Cases: ['Application No. 10260546', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 15']

JP4896921B2 - Camshaft phase setter and vacuum pump for internal combustion engines - Google Patents
Camshaft phase setter and vacuum pump for internal combustion engines Download PDF
JP4896921B2
JP4896921B2 JP2008114494A JP2008114494A JP4896921B2 JP 4896921 B2 JP4896921 B2 JP 4896921B2 JP 2008114494 A JP2008114494 A JP 2008114494A JP 2008114494 A JP2008114494 A JP 2008114494A JP 4896921 B2 JP4896921 B2 JP 4896921B2
phase setter
JP2008114494A
JP2008274944A (en
ヴェルテ クラウス
マウシェル フランツ
シュヴァビッシェ ヒュッテンヴェルケ オートモーティフ ゲーエムベーハー
2007-04-27 Priority to DE102007020431.2 priority Critical
2007-04-27 Priority to DE200710020431 priority patent/DE102007020431B4/en
2008-04-24 Application filed by シュヴァビッシェ ヒュッテンヴェルケ オートモーティフ ゲーエムベーハー filed Critical シュヴァビッシェ ヒュッテンヴェルケ オートモーティフ ゲーエムベーハー
2008-11-13 Publication of JP2008274944A publication Critical patent/JP2008274944A/en
2012-03-14 Publication of JP4896921B2 publication Critical patent/JP4896921B2/en
The present invention relates to a device comprising a camshaft phase setter and a vacuum pump for installation on an internal combustion engine, and further to an internal combustion engine in which the device is installed.
In automobiles, especially passenger cars and light commercial vehicles, the vehicles are equipped with pneumatic brake servos in order to reduce the brake pedal force. In a conventional passenger car electric ignition engine, the partial vacuum required for the brake servo is applied by a suction pipe partial vacuum operating behind the suction inlet system throttle valve. In diesel engines with fuel injection, and modern electric ignition engines, the suction pipe partial vacuum that often occurs during operation is not sufficient to power the brake servo. This is because load control arises from a conventional electric ignition engine. Such internal combustion engines therefore use separate vacuum pumps, which are driven by each engine. These pumps are typically driven by the camshaft of the engine and are usually installed with a flange on the side facing the cylinder head.
In order to increase power and torque, and to reduce exhaust and fuel consumption, modern passenger cars are charged by engine oil pressure, which is used for inlet camshaft and / or outlet camshaft The phase angle can be adjusted relative to the engine crankshaft. Usually, separate functional units of the camshaft setter and vacuum pump are located on the camshaft. Due to the sealing and coupling required between the functional unit and the respective drive, and where applicable between each other, such an arrangement in terms of oil supply and oil drainage. Produces a relatively elaborate structure. The direct coupling between the vacuum pump and the camshaft also limits torque levels and vacuum pump placement.
Patent Document 1 discloses disposing a vacuum pump and a camshaft phase setter coaxially in contact with each other on the same rotational axis. The rotor of the phase setter is fixed on rotation and is placed on the camshaft to be adjusted. The stator is driven by a crankshaft. The rotor is fixed against rotation and is connected to a vacuum pump via a coupling. The vacuum pump is a housing, which is flanged to the cylinder head of the internal combustion engine, protrudes through the cylinder head and is fixed against rotation, and is coupled to the rotor of the phase setter by coupling. And a drive shaft to be connected. The vacuum pump is provided with lubricating oil passing through the center hole of the drive shaft through the cylinder head.
German Patent Application No. 10260546
It is an object of the present invention to arrange camshaft phase setters and vacuum pumps for internal combustion engines in a manner that saves space and mass and that they can be easily installed.
The invention proceeds from the device comprising a phase setter for adjusting the phase position of the camshaft of the internal combustion engine relative to the crankshaft and a vacuum pump for supplying a partial vacuum to the assembly. The phase setter may be provided to adjust the phase position of another camshaft, or may be provided to adjust the phase position of multiple other camshafts of the internal combustion engine where applicable. The device may also include one or more other phase setters for adjusting the phase position of one or more camshafts. The vacuum pump can serve to supply a plurality of assemblies, or the device can comprise one or more other vacuum pumps to supply an assembly or one or more other assemblies.
The device also includes an attachment housing for the vacuum pump. The attachment housing can be installed on or already installed on an internal combustion engine, i.e. the subject of the present invention includes the device itself and the installed device. The attachment housing mounts the transmission member of the vacuum pump so that the transmission chamber in which the transmission member is housed can be moved and preferably forms the chamber. The attachment housing preferably comprises an inlet and an outlet. Where applicable, the attachment housing also forms only the inlet, or alternatively only the outlet, of the fluid (preferably air) transmitted by the vacuum pump. The attachment housing can have one or more parts. In embodiments where the attachment housing preferably has multiple parts, for example, the attachment housing may comprise an attachment housing main part or one or more housing covers.
In accordance with the present invention, the attachment housing also forms a housing or at least a housing cover for the phase setter and fulfills at least a housing function for the phase setter. Thus, the attachment housing may in particular mount at least one component of the phase setter or drive for the phase setter. The attachment housing may include a receiving space for control means (eg, a control valve or electrical control means) and, if applicable, an electro-electric actuator for the phase setter.
The phase setter and vacuum pump are combined by an attachment housing to form one functional unit. To the extent that the vacuum pump attachment housing has the function for the phase setter, the function discussed by the internal combustion engine itself is removed. The structural part of the attachment housing required for the vacuum pump can also form, for example, the structural part of the phase setter at the same time. This helps to reduce the weight and required space between the phase setter and the vacuum pump and to reduce the number of parts that are connected to the phase setter and the vacuum pump. This also simplifies the interface between one internal combustion engine and the other phase setter and vacuum pump. The number of interfaces can be reduced, for example, by driving a vacuum pump via a phase setter, so that no additional connection to the drive is required.
In a preferred embodiment, the phase setter comprises a first rotor and another second rotor. When the internal combustion engine is in operation, the first rotor is driven at a rotational speed that depends on the rotational speed of the crankshaft of the internal combustion engine. The second rotor drives the camshaft and the camshaft should be set for its phase position. The second rotor is driven according to the first rotor. During the rotational movement, the rotation angle position adopted by the second rotor, that is, the phase position with respect to the first rotor can be adjusted within a predetermined rotation angle adjustment range. The second rotor is preferably driven via the first rotor. In a preferred embodiment, the first rotor is subordinate to the second rotor in its rotational movement and is correspondingly coupled to the second rotor for this purpose. Due to the coupling, the relative adjustment rotational motion can overlap the rotational motion generated by the subordinates. The bond is preferably a hydraulic mechanical bond. However, in principle, the phase position of the second rotor can also be adjusted electromagnetically, and the adjustment of the phase position can be controlled electronically. In such an embodiment, the mechanical coupling can be omitted completely. In particular, the rotors can be arranged with respect to each other by internal axles, preferably so that they can rotate about the same axis of rotation. However, an external axle arrangement, preferably with parallel axes of rotation, is conceivable as well. In principle, the phase setter can also be formed as an independent motor, for example an electric motor, and the first rotor can be replaced by a stator that is not rotatable relative to the attachment housing. In such an embodiment, the second rotor is driven relative to the stator at a rotational speed that depends on the rotational speed of the crankshaft, and the rotational adjustment motion is this for purposes of setting the phase setter. Overlaid on the basic rotation speed.
In a preferred embodiment, the attachment housing rotatably mounts at least one of the rotors, preferably both rotors. The attachment housing is formed by forming a rotary joint with the first rotor or the second rotor using the rotor being discussed, or by a bearing element that is rotatably fixed and connected to the rotor. Can be mounted directly rotatable. Alternatively, the first rotor or the second rotor is also supported rotatably only on the attachment housing indirectly, i.e. via an intermediate member, and the rotor discussed here uses the intermediate member A rotary joint is formed, and the intermediate member forms another rotary joint using an attachment housing. The first rotor or the second rotor may also be rotatably mounted by the attachment housing via a plurality of intermediate members and a corresponding plurality of joints. In particular, one of the rotors may form at least one intermediate member for the other rotor.
The word “or” is always used herein and elsewhere in the meaning of “and / or”. That is, the word “or” means the meaning of “to or from” and the meaning of “to and to” if the context that limits the indication of the meaning of one or the other cannot necessarily follow from the respective context. The meaning of both is included.
With respect to the feature of rotary mounting, generally, either only the first rotor or only the second rotor, or both the first and second rotors are directly Can be mounted rotatably or indirectly by the attachment housing, which also allows one of the rotors to be supported directly on the attachment housing and the other via another rotary joint. Including the case of being indirectly supported on the attachment housing. A direct rotatable installation is an embodiment in which the hub that serves for the rotatable installation is formed as one piece by each rotor, and the rotary joint using one each rotor and the other attachment housing. The forming shafts are formed separately from each other, fixed against rotation, and connected to each other. If the phase setter can be adjusted hydraulically, the second rotor can be fixed against rotation and advantageously fixed on a separately manufactured fluid distributor. The fluid distributor uses the attachment housing to form the only rotary joint for the second rotor, or is rotatably supported on the attachment housing via one or more other rotary joints.
The internal combustion engine comprises at least two camshafts, and according to a preferred embodiment, one of the rotors can be fixed for rotation and connected to one of the camshafts. The other rotor may also be fixed to rotation and connectable to one of the other camshafts or the other camshaft. More preferably, however, only one of the rotors is fixed to rotation and coupled to one of the camshafts, while the other rotor is fixed to rotation. The gear member may be coupled to one of the other camshafts or the other camshaft. In a first variant, the first rotor can be fixed with respect to rotation and connected to one of the camshafts, and the second rotor can output to another camshaft, or If applicable, output to one of the other camshafts, i.e., the camshaft adjusted for its phase position. In a second variant, the second rotor is fixed with respect to rotation and connected to an adjustable camshaft, and the first rotor is within this adjustable rotation angle range relative to this camshaft. Can be rotated. Such an embodiment is particularly advantageous when the device comprises another phase setter for adjusting the phase position of the second camshaft or a plurality of other camshafts. For the other phase setter, the same conditions regarding the connection to the other camshaft can have an advantageous effect on the first phase setter. Another phase setter advantageously presents one or more of the features disclosed with respect to the first phase setter. Another phase setter may be arranged with the first phase setter, in particular in or on the attachment housing.
When the attachment housing is mounted to the first rotor or the second rotor, directly or via at least one intermediate member, the rotor is fixed with respect to rotation; It is advantageous if it can be mounted on a camshaft. In such an embodiment, gripping the attachment housing containing the rotor or preferably the entire phase setter discussed, placing and mounting it on the internal combustion engine, the rotor and preferably the phase setter. Enough to install the whole.
The first rotor or the second rotor can preferably be connected to the camshaft by a positive or friction fit, particularly preferably by a pressing connection. With respect to the pressure connection, the rotor (or the installation part fixed to the rotation and connected to the rotor) shows a slope inclined with respect to the rotation axis of the camshaft, and the camshaft shows the corresponding facing surface Cases are preferred and when connected, they are pressed against each other in a pressing fit. The bevels of the camshaft and the rotor or mounting part are in particular formed as an outer cone or an inner cone and are pressed against each other by a force introduced along the axis of rotation of the camshaft.
In a preferred embodiment, at least one of the rotors (preferably only one) of the internal combustion engine is fixed with respect to rotation so that only a single camshaft or, where applicable, multiple cams. Connected to one of the shafts, but with a single camshaft or, where applicable, one of a plurality of camshafts, fixed to rotation and having a connectable rotor It is possible that there is no. Thus, the first rotor is driven directly by the crankshaft through the gear member rather than through the camshaft, or preferably a plurality of camshafts, and the second rotor is also adjusted. Embodiments that output via a gear member onto a camshaft are fully feasible. Also, if there are multiple camshafts, the first rotor can also be driven via a gear member by one of the camshafts, and the second rotor is on the camshaft to be adjusted. It can output via a gear member.
The attachment housing can advantageously serve to rotationally drive the gear wheel, accommodate such gear wheel, or accommodate or support another gear member (eg, a toothed belt, simple belt or chain). In particular, the gear member that is rotationally driven or supported or housed is an output wheel on the vacuum pump, an output wheel from the vacuum pump to the phase setter, if applicable, to another camshaft of the internal combustion engine. Or an output wheel for rotational driving of the first rotor. It is also possible to drive another camshaft and output from this camshaft to the first rotor of the phase setter. Required to drive to or output from the phase setter, is rotatably mounted, otherwise supported or contained by the attachment housing (ie, mounted on or within the attachment housing) The more gear members), the simpler the arrangement for incorporating the phase setter and vacuum pump on the internal combustion engine.
In a preferred embodiment, the vacuum pump is driven via a phase setter (ie from the phase setter). In a preferred case, the vacuum pump is a rotary pump with at least one rotatable transmission member, one of the rotors being fixed for rotation and connected to the transmission member. When arranged on the same axis in contact with each other on the same axis of rotation, instead of being connected, they are fixed rotatably and one of the rotors of the phase setter is connected via a gear system, e.g. The gear system can be mechanically coupled to the transmission member of the pump. An external axle gear system is preferred. When coupled by an external axle gear system, the rotation axis of the phase setter and the rotation axis of the vacuum pump (preferably formed as a rotation pump) are different. In this case, it is convenient for the rotation axes to be parallel to each other. An external axle spur gear system is the preferred gear system. In principle, however, the gear system can also be formed by an internal axle or by traction means, for example a toothed belt. By means of the gear system, the rotational speed of the rotor or stator can be advantageously geared up to a higher rotational speed of the transmission member. By gearing up the rotational speed of the rotor output to the pump, the pump can achieve a smaller volume and correspondingly a smaller required equipment space for the same transmission output. By gearing down the rotational speed, friction output and consequently wear can be reduced.
The phase setter may be adjustable and / or operable electrically or fluidically. The phase setter can in particular be formed as a fluid pivot motor. Examples of pivot motors are described in US Pat. Nos. 2,861,557 and 4,858,572.
In the case of a fluid phase setter, the pressure reservoir can be provided with pressure fluid, and the phase position of the rotor relative to the stator is adjusted by the pressure fluid to ensure a sufficient set speed of the phase setter. This is the case when the phase setter is supplied with pressure fluid according to the rotational speed of the internal combustion engine, preferably by a pump driven by the internal combustion engine (eg a lubrication pump for supplying lubricating oil to the internal combustion engine). The pressure of the correct pressure fluid source can be subject to large fluctuations within the operating range of the internal combustion engine. The pressure reservoir ensures that the phase setter is supplied with sufficient pressure and a sufficient amount of pressurized fluid, even under unfavorable conditions. The attachment housing advantageously houses the pressure reservoir, or where applicable, only a portion of the pressure reservoir, or only one or more movable components of the pressure reservoir, which are pressure Help to provide. The pressure reservoir can also be placed in its own housing, which is mounted on the housing part of the attachment housing. In such an embodiment, the attachment housing part and the installed pressure reservoir housing are both understood as an attachment housing or part of an attachment housing. However, in a preferred embodiment, the attachment housing forms both one or more mounting points for mounting the internal combustion engine and at least one wall of the pressure reservoir as one piece.
The pressure reservoir comprises a pressure chamber and a wall structure that defines the pressure chamber and can be moved against a restoring elastic force. The movable wall structure may be a wall structure that is elastically flexible but prevents fluids, or preferably a piston that can move back and forth within the pressure chamber. In the former case, the wall structure can be fixed to the chamber wall. The wall structure can form a spring member that generates its own restoring elastic force. A pressure reservoir is a membrane storage with an elastic membrane that is pulled by an additional spring member or simply a flexible membrane where applicable. In the other case, the piston is supported on a spring member. The spring member for the piston or simply the flexible wall structure may be formed by a gas pressure spring, but is preferably a mechanical spring (e.g. a spiral spring), which pulls when the pressure in the chamber increases. (Preferably pressurized). The attachment housing preferably supports a piston or a spring member; in some cases a wall structure that is inherently elastic, in other cases a gas pressure spring or a mechanical spring.
Pressure reservoirs for phase setters are in principle advantageous, not only for the combination of phase setters and vacuum pumps, or features that incorporate phase setters and vacuum pumps in or on a common attachment housing Not just for combining. Therefore, the combination of a phase setter on an internal combustion engine for an internal combustion engine and a pressure reservoir for the pressure fluid that serves to adjust the phase setter is also by itself the subject of the present invention. . Such a device for adjusting the phase position of the camshaft relative to the crankshaft of the internal combustion engine ensures a phase setter for adjusting the phase position of the camshaft and sufficient fluid pressure for the phase setter A pressure reservoir. The pressure reservoir also serves as a bolster or reservoir by increasing the amount of fluid available for regulation. Phase setters and pressure reservoirs are disclosed herein and advantageously exhibit one or more of the features that may correspond to one or more of the claims. Such a device may exhibit one or more of the features disclosed herein when associated with a vacuum pump. Also, an attachment housing of the type described may in particular form a pressure reservoir or at least a pressure reservoir wall.
The pressure reservoir is preferably assigned only to the phase setter. If the device includes multiple phase setters, each of these phase setters may be provided with its own pressure reservoir, or a common pressure reservoir may be provided for multiple phase setters.
In a preferred embodiment, the attachment housing comprises an attachment housing part and one or more covers that are secured to the attachment housing. The attachment housing fulfills one or more of the functions required to operate the phase setter and pump (eg, installation and fluid distribution). The attachment housing part can be manufactured as a single part (i.e. molded by the original molding method, preferably then machined). The attachment housing may comprise a plurality of such parts, each of which fulfills at least one of the functions (eg, installation and fluid distribution) required to operate the device. In a preferred embodiment, the attachment housing is a single attachment housing part for fulfilling one or more functions required to operate the device, and in other cases the attachment housing part is soiled or preferably fluidized. One of the one or more housing covers for sealing against and one or more internal and external chambers of the attachment housing part.
Instead of the described support, rotatable mounting, or component containment, or pressure reservoir component formation or support functions, the attachment housing may include one or more other functions (e.g., pump or non-liquid). Lubricant distribution for pressure phase setters or pressure fluid distribution for fluid phase setters. More preferably, however, the attachment housing fulfills at least one of the functions already described and at least one of the other functions described above.
The pump is preferably lubricated with lubricating oil for an internal combustion engine. With regard to the supply of lubricant, in the fluid embodiment, the phase setter is preferably operated using the internal combustion engine lubricant as the pressure fluid, and the same lubricant is also used to lubricate the vacuum pump.
When the phase setter is operated with lubricating oil for an internal combustion engine, the lubricating oil can be supplied from the camshaft to the phase setter, preferably the provided pressure reservoir. Alternatively or additionally, in preferred embodiments, the lubricating oil is preferably supplied separately in or on the engine housing of the internal combustion engine. In an advantageous embodiment, the attachment housing comprises a fluid port for lubricating oil in or on the engine housing of the internal combustion engine for connection to the lubricating oil feed in question. If the phase setter is not operated with internal combustion engine lubricant, or if the vacuum pump is not lubricated with lubricant, the attachment housing will still favor the fluid port for supplying another pressure fluid or lubricant Can be prepared.
In a preferred embodiment, the phase setter is supplied with pressure fluid via a reflux valve. When the vacuum pump is lubricated with pressure fluid, both components are preferably supplied with pressure fluid and / or lubricating oil via the same reflux valve. However, alternatively, each of these two components can be provided using its own reflux valve. Instead of one simple reflux valve or a plurality of reflux valves where applicable, in principle it is also possible to provide various blocking means (eg slide valves). A blocking means (preferably a reflux valve) or a plurality of blocking means are preferably assigned only to the phase setter or pump to ensure maximum possible supply reliability or minimum possible response time (i.e. In each fluid flow, it is located immediately upstream of the component in question or one or more control means for the component in question). If a pressure reservoir is provided for the phase setter, the phase setter blocking means is preferably arranged upstream of the pressure reservoir. The combination of a phase setter and such blocking means is another independent subject of the invention, preferably in combination with a pressure reservoir. Both the pressure reservoir and the blocking means, preferably both of the combined components, are critically squeezed (for example, at the low rotational speed of the pump that serves to supply fluid, or the fluid source is significantly throttled by the internal combustion engine. To ensure sufficient fluid pressure.
In one development, the device has detection means for ascertaining the rotational angular position of the camshaft being adjusted. In a preferred embodiment, the detection means comprises a rotation angle transmitter (preferably a transmitter wheel) and a sensor assigned to the transmitter for detecting the position of the sensor. The transmitter is fixed with respect to rotation and is advantageously connected to the second rotor. If the latter outputs to a camshaft to be adjusted via a gear wheel, the transmitter can be fixed against rotation and connected to one of these gear wheels, or another type of gear member (Eg, a toothed belt). The sensor is preferably located in or on the attachment housing. The rotation angle transmitter comprises a mask (e.g. a mask that is optically or preferably tactilely detectable). Correspondingly, for example, the sensor can be an optical sensor or preferably a tactile sensor. In particular, the rotation angle transmitter can be formed as a transmitter wheel, which comprises at least one projecting projection, preferably a plurality of projecting projections distributed around the It is detected by a sensor.
In addition to a phase setter and a vacuum pump coupled with the phase setter in or on a common attachment housing, the present invention relates to an internal combustion engine comprising an installed unit. The first rotor of the phase setter is driven at a rotational speed that is proportional to the crankshaft of the internal combustion engine and is typically half the rotational speed of the crankshaft in a 4-stroke engine. In a preferred embodiment, the first rotor is mechanically coupled to the crankshaft (ie, the first rotor draws its drive from the crankshaft). The second rotor is preferably mounted fixed on rotation on the camshaft. The attachment housing is preferably mounted on the engine housing (eg, cylinder head) of the internal combustion engine. In particular, the internal combustion engine may form the engine of a vehicle (preferably an automobile). In particular, the assembly supplied with the partial vacuum by the vacuum pump can be a brake servo or other servo assembly of the vehicle.
A device for adjusting the phase position of camshafts (1, 2) of an internal combustion engine and supplying a partial vacuum to the assembly, the device comprising:
a) a phase setter (S) for adjusting the phase position of the camshafts (1, 2) relative to the crankshaft of the internal combustion engine;
b) a vacuum pump (P) for the assembly;
c) an attachment housing (G) for the vacuum pump, the attachment housing comprising: an attachment housing that can be installed on the internal combustion engine;
d) Device characterized in that the attachment housing (G) also forms a housing or at least a housing cover for the phase setter (S).
The phase setter (S) includes a first rotor (7) for driving depending on the rotational speed of the crankshaft, and a second rotor for output to the camshafts (1, 2). (8), and the attachment housing (G) can rotate at least one of the rotors (7, 8) directly or via at least one intermediate member (9). 2. The device according to item 1, wherein the device is installed.
The attachment housing (G) mounts one of the rotors (7, 8) directly and rotatably, and the other rotatably via at least one intermediate member (9). Item 3. The device according to Item 2, wherein
The phase setter (S) includes a rotor (7, 8), and the attachment housing (G) is mounted on the attachment housing (G) directly or via at least one intermediate member. Sometimes the rotor (7,8) can be fixed against rotation and mounted on the camshaft (1,2) of the internal combustion engine or another camshaft (2,1) 4. Device according to one of items 1 to 3, characterized in that the rotor (7, 8) is mounted in a position and orientation that can be mounted on.
Item 2 characterized in that one of the rotors (7, 8) can be connected to the camshaft (1, 2) by a pressing connection, preferably by a slope (9a) that can slide on each other. Item 5. The device according to Item 4.
The internal combustion engine includes another camshaft (2, 1), one of the camshafts (1, 2) is driven at the end of the shaft, and the phase setter (S) is connected to the camshaft. 6. Device according to one of items 1 to 5, characterized in that it can be installed at the end of the other shaft by one of (1, 2).
Item 1, wherein the phase setter (S) and the vacuum pump (P) are coupled to each other and the phase setter drives the vacuum pump or the vacuum pump drives the phase setter The device according to one of items 6 to 6.
The phase setter (S) includes a drive surface (9a), on which the torque for driving the phase setter (S) can be introduced, and on the output side of the phase setter (S), the flow of force Is branched into a first output end (5) and another second output end (12), and the camshaft (1, 2) to be adjusted is connected to the first output end (5). The device according to one of items 1 to 7, characterized in that the device is driven through the vacuum pump (P) through the second output end.
The phase setter (S) includes a first rotor (7) for driving depending on the rotational speed of the crankshaft, and a second rotation for output to the camshafts (1, 2). The attachment housing (G) has a gear wheel (5) rotatably mounted, and the camshafts (1, 2) are connected to the rotor (7) via the gear wheel. , 8) or via the gear wheel one of the rotors (7, 8) can be driven directly or via at least one intermediate member (9) 9. Device according to one of items 1 to 8, characterized in that it can be driven by
The internal combustion engine is at least two camshafts (1, 2), which camshafts (1, 2) can be connected to each other by means of a gear member (5, 6) for common drive The attachment housing (G) has at least one (5) of the gear members (5, 6) installed directly or via at least one intermediate member (9);
The phase setter (S) and the vacuum pump (P) are coupled together by a gear member (5, 6; 12, 13), via which the phase setter drives the vacuum pump; Or the vacuum pump drives the phase setter;
The vacuum pump (P) is driven via the gear members (12, 13) at a faster or slower rotational speed than the phase setter (S);
The phase setter (S) and the vacuum pump (P) are arranged in contact with each other and with at least partial axial overlap;
10. Device according to any one of items 1 to 9, characterized in that at least one of the is satisfied.
The phase setter is a first rotor (7) for driving, and the driving depends on the rotational speed of the crankshaft, and the first rotor (7) and the camshaft (1 , 2) and a second rotor (8) for output to the gear member (5, 6; 12, 13), wherein one of the rotors (7, 8) is Device according to item 10, characterized in that it is coupled to a vacuum pump (10, 11).
Said gear member (5, 6; 12, 13) comprises at least one traction means, said traction means being based on a friction fit or a positive fit, or said gear member (5, 6; 12, 13) 12. Device according to one of items 10 or 11, characterized in that it is just a gear wheel (5, 6; 12, 13), preferably a toothed wheel.
At least one of the gear member (5) or the gear member (5, 6; 12, 13) is disposed in the attachment housing (G) or on the attachment housing (G). The device according to any one of Items 9 to 12.
The rotor (7, 8) of the phase setter (S) is arranged so that the rotor (7, 8) can rotate around the first rotation axis (R 1 ), and the vacuum pump (P ) Of the transmission member (10, 11) is arranged so that the transmission member (10, 11) can rotate with respect to another second rotation axis (R 10 ), and the second rotation axis (R) 10. The device according to one of items 1 to 13, characterized in that 10 ) is preferably spaced in parallel from the first axis of rotation.
The rotors (7, 8) of the phase setter (S) and the transmission members (10, 11) of the vacuum pump (P) can be rotated with respect to a common rotation axis (R 1 ). 14. The device according to one of items 1 to 13, which is disposed on the device.
16. Device according to item 15, characterized in that the transmission member (10, 11) is fixed against rotation by a gear member and is connected or coupled to the rotor (7, 8).
17. Device according to one of items 1 to 16, characterized in that the phase setter (S) can be adjusted by hydraulic pressure, pneumatic pressure or electricity.
In order to ensure a sufficiently high set speed of the phase setter (S), the phase setter (S) can preferably be adjusted by hydraulic pressure using a pressure fluid, the pressure reservoir (30) being 18. Device according to one of items 1 to 17, characterized in that it is provided for a pressure fluid.
The attachment housing (G) forms a wall (18) of the pressure reservoir (30);
The pressure reservoir (30) is defined by a wall structure (32) that can be moved against a restoring elastic force and is supported by the attachment housing (G) or mounted so that it can be moved back and forth. 19. Device according to item 18, characterized in that at least one of: comprising a pressure chamber (31) is filled.
A spring (33) for generating the elastic force is supported by the attachment housing (G);
Item 20. The device according to item 19, characterized in that at least one of a piston forms said movable wall structure (32) is satisfied.
The phase setter (S) is preferably hydraulically adjustable with pressure fluid and can be supplied with the pressure fluid by the attachment housing (G);
The vacuum pump (P) can be provided with lubricating oil by the attachment housing (G);
The phase setter (S) can preferably be adjusted hydraulically using pressurized fluid, the engine housing (4) of the internal combustion engine, or the camshaft (1,2) or another cam of the internal combustion engine Being able to be supplied with the pressure fluid via the shaft (2,1);
The phase setter (S) may preferably be adjusted hydraulically using a pressure fluid, so that at least one control conduit (25, 26) charges the phase setter (S) with the pressure fluid. 21. The device according to one of items 1 to 20, characterized in that at least one of: being supplied via the attachment housing (G) is satisfied.
The phase setter (S) can preferably be adjusted hydraulically using a pressure fluid, and a blocking means (22) is preferably arranged at the pressure fluid feed in the attachment housing (G). The device according to one of items 1 to 21, characterized by:
The blocking means (22) is arranged upstream of the pressure reservoir (30) according to one of items 18 to 20;
The blocking means (22) being provided only for the phase setter (S) or only for the phase setter (S) and the vacuum pump (P);
A filter (21) is preferably disposed in the attachment housing (G) or on the attachment housing (G) in a pressure fluid supply for the phase setter (S) Item 23. The device according to Item 22, wherein one is satisfied.
A fluid port (17) for connecting the attachment housing (G) for the pressurized fluid or lubricant to a fluid feed in or on the engine housing (4) of the internal combustion engine. 24. The device according to Item 23.
The phase setter (S) includes a first rotor (7) and a second rotor (8), and the rotational angle position of the rotor (7, 8) relative to each other can be adjusted. The control means (V) for adjusting the rotational angle position is arranged in the accommodation space (16) of the attachment housing (G), and is one of items 1 to 24. The device according to item.
The internal combustion engine includes a first cam shaft and a second cam shaft (1, 2), and the phase setter (S) adjusts the phase position of the first cam shaft (1, 2). And the device comprises another phase setter (S) for adjusting the phase position of the second camshaft (1, 2), the attachment housing also preferably Forming a housing or at least a housing cover for covering the phase setter (S), wherein the other phase setter (S) is preferably formed according to at least one of items 1 to 25. 26. The device according to one of items 1 to 25.
Detection means (D) for confirming the rotational angle position of the camshafts (1, 2) to be adjusted is provided, and the detection means (D) is preferably in the attachment housing (G) or in the attachment housing ( G) The device according to one of items 1 to 26, arranged on the device.
The detection means (D) includes a rotation angle transmitter (35) and a sensor (36) for detecting the rotation angle position of the rotation angle transmitter (35), and the rotation angle transmitter is preferably Is arranged on the rotor (7, 8) of the phase setter (S), and the sensor (36) is preferably arranged in the attachment housing (G) or on the attachment housing (G). 28. A device according to item 27, characterized.
Camshafts (1, 2);
29. Device according to one of items 1 to 28, mounted on the internal combustion engine, for adjusting the phase position of the camshaft (1, 2) relative to the crankshaft and supplying a partial vacuum to the assembly An internal combustion engine comprising:
30. Internal combustion engine according to item 29, characterized in that the attachment housing (G) is mounted on an engine housing (4) of the internal combustion engine, preferably on a cylinder head.
A device for adjusting the phase position of a camshaft (1, 2) of an internal combustion engine and supplying a partial vacuum to the assembly, the device being connected to the crankshaft of the internal combustion engine A phase setter (S) for adjusting the phase position of the vacuum pump, a vacuum pump (P) for the assembly, and an attachment housing (G) for the vacuum pump, the attachment housing (G) comprising: A device that can be mounted on the internal combustion engine, the attachment housing also forming a housing or at least a housing cover for the phase setter (S).
Exemplary embodiments of the invention are described below with reference to the drawings. The features disclosed by the exemplary embodiments advantageously develop the subject matter of the claims and the following embodiments, each individually and in any combination.
FIG. 1 shows a phase setter S and a vacuum pump V, which are arranged on the internal combustion engine by a common attachment housing G. The internal combustion engine includes two camshafts 1 and 2, and the camshafts 1 and 2 are arranged in contact with each other, and include a camshaft and a cam 3, and one of the cams 3 has an inlet valve. Serve to control, the other of the cams 3 serves to control the outlet valve of the internal combustion engine. Camshaft 1 and 2, (in the exemplary embodiment, a cylinder head) engine housing 4 of the internal combustion engine is disposed within, as a result, the cam shaft rotates for each rotation axis R 1 and R 2 obtain. The camshaft 1 is driven by, for example, a crankshaft of an internal combustion engine via a drive wheel disposed at an end (not shown) of the camshaft 1 that faces away from the phase setter S.
The phase setter S includes a gear wheel 5 through which the phase setter S drives the camshaft 2. The gear wheel 5 is a spur gear with teeth on the outside. It is engaged by teeth with another gear wheel 6 which is likewise formed as a spur gear with teeth on the outside. The gear wheel 6 is fixed against rotation and connected to the camshaft 2. Accordingly, the camshaft 1 is driven by the crankshaft at a phase position that is unchanged with respect to the crankshaft. In contrast, the phase position of the camshaft 2 can be adjusted with respect to the crankshaft and the camshaft 1 by means of the phase setter S. This is driven by the phase setter S.
The phase setter S comprises a first rotor 7 and a second rotor 8, which can be rotated about the rotation axis of the camshaft relative to each other at a predetermined rotation angle that adjusts the range. The first rotor 7 is fixed to the rotation and connected to the camshaft 1, and the second rotor 8 is fixed to the rotation and connected to the gear wheel 5. When the crankshaft rotates, the first rotor 7 follows the second rotor 8 in its rotational motion, but the phase position of the second rotor 8 with respect to the first rotor 7 is in a range. It can be adjusted within the adjusting rotation angle. The phase position of the camshaft 2 with respect to the crankshaft corresponds to the phase position of the second rotor 8 with respect to the first rotor 7.
The vacuum pump P is a rotary pump, and in an exemplary embodiment is a vane pump. The pump includes a rotor 10 and a vane 11 guided by the rotor 10 so that the vane can move linearly. These form the transmission members 10 and 11 of the pump P. The rotor 10 may rotate relative to the rotation axis R 10, shaft are spaced parallel apart from the rotation axis R 1. The transmission members 10 and 11 are rotationally driven by the crankshaft via the phase setter S. The rotary drive is provided by an external axle tooth spur gear system, which is fixed with respect to rotation and fixed with respect to rotation with a gear wheel 12 connected to the first rotor 7, a vacuum pump. And a gear wheel 13 connected to the P rotor 10. The gear wheels 12 and 13 are engaged with each other by teeth. The vacuum pump is driven and geared down through the external axle tooth spur gear system formed by the gear wheels 12 and 13, that is, at a lower rotational speed than the rotor 7 driving the pump P. Gearing down allows friction output and correspondingly wear and pump P noise to be kept low. In an equally preferred alternative embodiment, the gear ratio can be reversed and the size of the pump P can be reduced by driving the pump P at a faster rotational speed than the drive rotor 7.
The transmission members 10 and 11 are accommodated in a pump chamber, which is formed by an attachment housing G. The attachment housing G substantially comprises an attachment housing part 14 that substantially forms the wall of the pump chamber, an inner housing cover 19 that seals the pump chamber, and an outer housing cover 20 that seals the attachment housing part 14 from the outside. . The attachment housing G is fixed to the engine housing 4, in the exemplary embodiment, to the cylinder head. This fixing is provided only by the attachment housing part 14 and, for this purpose, forms a connection flange for a tight and sealed fixing around the perimeter of the lateral opening of the engine housing 4. On the low pressure side, the attachment housing G contains an inlet for the fluid (preferably air) of the vacuum pump P and on the outlet side an outlet for the pressure fluid to be sucked. One or more assemblies, such as a brake servo (not shown), are connected to the inlet of the pump P and are supplied with a partial vacuum.
Apart from the necessary ports, the attachment housing G is closed with respect to the vacuum pump itself and is opened for the phase setter S towards the internal combustion engine. When mounted, attachment housing G is sealed engine housing 4 to the fluid about an axis of rotation R 1. Attachment housing G is the rotation axis R 1 of the rotor 7 when the attachment housing G is arranged such that the rotational axis R 1 the same plane of the cam shaft 1, the position and orientation relative to the contact surface of the engine housing 4 Then, the first rotor 7 is installed. Correspondingly, the rotor 7 can be fixed against rotation and connected to the camshaft 1 and the attachment housing G and the engine housing 4. There is no need for the assembler or preferably the installation robot to hold and arrange the phase setter S separately, in particular for installing the first rotor 7. Handling and arranging the phase setter S is integral with the process of handling and arranging the attachment housing G. The device thus forms an installation unit. Installing the attachment housing G also installs the pump P at the same time.
Since the phase setter S and the vacuum pump P are arranged axially and in contact with each other, it is advantageous that the device is generally flat. The part of the attachment housing G that accommodates the vacuum pump P is disposed in contact with the part of the attachment housing G that mounts the phase setter S and surrounds the phase setter with at least a part of the length of its axis. The parts for housing the connection flange of the attachment housing G and the vacuum pump P are arranged in contact with each other correspondingly. One wall of the attachment housing G contacts the engine housing 4 and adjoins the attachment housing G with the connecting flange. In a modification, the engine housing 4 may also form a part wall (in the exemplary embodiment, the wall of the pump chamber) of the attachment housing G that houses the pump P. However, with regard to sealing, it is more advantageous if the attachment housing G completely surrounds the pump chamber.
The attachment housing G (in the exemplary embodiment, the attachment housing part 14) is mounted on the rotation axis R 1 of the camshaft 1 by installing the first rotor 7 of the phase setter S. It can rotate with respect to it. This forms a rotary joint (in the exemplary embodiment, a rotary slide bearing) with the shaft 9, which is fixed against rotation and connected to the rotor 7. The attachment housing G forms a rotary bearing socket 15. The shaft 9 projects through the socket 15. The first rotor 7 is disposed between the socket 15 and the camshaft 1, and the gear wheel 12 is moved away from the camshaft 1 at the end of the shaft 9 from which the shaft 9 projects through the socket 15. It is arranged on the side of the socket 15 facing.
The shaft 9 extends the camshaft 1 beyond the end of its axis. The camshaft 1 and the shaft 9 are connected to each other by a pressing connection. For the pressure connection, the end of the camshaft 1 represents the outer cone and the shaft 9 represents the correspondingly shaped inner cone 9a. When is mounted, inclined conical surface with respect to the rotation axis R 1 is the central fixing screw 9b, pressed axially to each other, the center fixing screw 9b protrudes through the hollow shaft 9, the cam in the axial direction the shaft 1 screwed.
The phase setter S can be adjusted by the fluid. For adjustment, the phase setter S is supplied with pressure oil used with the internal combustion engine as a lubricating oil for the internal combustion engine and as a pressure fluid for the phase setter S for adjusting the phase position. With respect to installing the first rotor 7, the rotor 7 and the shaft 9 can be formed in one piece. However, as a dual function, the shaft 9 also fulfills the fluid distribution function of the phase setter S, ie the shaft 9 serves as a fluid distributor shaft. The shaft 9 is formed separately from the rotor 7 and is fixed to the rotation and connected to the rotor 7, in particular for reasons of the resulting manufacture.
The attachment housing G (in the exemplary embodiment, the attachment housing part 14) is used for mounting the phase setter S (ie for mounting directly on the first rotor 7 for rotation and as an intermediate member). Not only useful for indirectly rotating the second rotor 8 via the shaft 9), but also in the form of an integrated fluid channel for supplying and discharging pressure fluid for the phase setter, Includes control conduit. Two control conduits 25 and 26 for fluid supply and fluid discharge and containment space 16 (in the exemplary embodiment, a hole) can be seen in FIG. The rotors 7 and 8 are charged with pressure fluid via the receiving space 16 and the control conduits 25 and 26 for adjusting the phase position.
FIG. 2 shows the device shown in FIG. 1 in section AA. FIG. 2 also shows components for charging the phase setter S with pressurized fluid, which components are located outside the cross section of FIG. 1 and are not shown in FIG. In particular, the transmission members 10 and 11 housed in the pump chamber formed by the attachment housing G can be seen. The attachment housing part 14 forms a cup-shaped part of the pump chamber, and the attachment housing part 14 projects from the base (FIG. 1) facing the engine housing 4 to the periphery, and the transmission member 10 on its internal surface area. And a side wall forming a sliding surface 14a for 11. As already mentioned, the transmission member 10 and 11, so that the rotor 10 can rotate about an axis of rotation R 10, across the rotor 10 which is mounted by the attachment housing G, the rotation axis R 10 linear And a vane 11 guided by the rotor 10, and slip elements 11 a are arranged at both ends of the vane 11. The slip elements 11 a are driven by the transmission members 10 and 11 for rotation. When sliding, it slides along the sliding surface 14a. The vane 11 divides the pump chamber into two chambers that periodically increase or decrease in size with each rotation of the vane 11 so that fluid is drawn into the inlet of the pump P and the outlet is Drain fluid through.
FIG. 2 also shows two control conduits 25 and 26. 2, section A-A passes through the control channel 25 on the rotary shaft R 1, and extending through the control channel 26 below the rotation axis R 1. As shown in FIG. 1, the control channel 25 and 26 are offset relative to each other along the rotational axis R 1. The section AA extends through the receiving space 16 in the center. The second rotor 8 is charged with pressure fluid supplied through the control conduit 25 in one direction of its relative rotational mobility relative to the first rotor 7 and the control conduit 26 in the other direction. Charged with pressurized fluid supplied through. The pressure fluid supplied through one of the control conduits 25 and 26 is routed through a central hollow space and the pressure fluid supplied through the other of the control conduits 25 and 26 is Sent through the peripheral channel of the shaft 9 between the rotor 7 and the rotor 8, so that the second rotor 8 is first adjusted in one direction of rotation relative to the first rotor 7, and then It is adjusted in the other direction of rotation.
The control means V (in the exemplary embodiment a control valve) comprises a valve cylinder 23 that is immovable relative to the attachment housing part 14 and a valve piston 24 that is movable within the valve cylinder 23. The control means V is accommodated in the accommodation space 16. The control means V can in particular be embodied as a proportional valve or an on-off valve. The valve piston 24 can be moved back and forth in the axial direction between two end positions. FIG. 2 shows the valve piston 24 in a neutral position between the two end positions. In the neutral position, the valve piston approaches both control openings of the valve cylinder 23, one of the control openings being connected to the control conduit 25 and the other being connected to the control conduit 26. When the valve piston is moved out of the neutral position in one of the end positions, one of the control conduits 25 and 26 is connected to the high pressure side of the pressure fluid supply via the control means V, respectively. And the other of the control conduits 25 and 26 is separated from the high pressure side. The pressure fluid exits the phase setter through control conduits 25 or 26, respectively, away from the high pressure side of the pressure fluid supply and is supplied via the feedback conduit 27 to the low pressure side of the pressure fluid supply. “28” designates a port through which the control means V is supplied with electric energy and is controlled by a control signal.
The attachment housing part 14 forms a separate receiving space 17 through which the device is connected to a pressure fluid source for the phase setter S when installed, where the pressure fluid is also Also used as a lubricant for vacuum pumps. Accordingly, the attachment housing G also forms a fluid port for the device in a separate receiving space 17. The connection channel is led from the port to the accommodation space 17. A filter 21, preferably a sieve, is arranged in the connection channel. Another receiving space 17 is not shown in the cross section of FIG. 1; FIG. 1 also shows a receiving space 16 without the control means V.
Block means 22 (in the exemplary embodiment a reflux valve) is disposed between the port for pressure fluid and the phase setter S to protect the phase setter S from pressure drops in the pressure fluid supply. The reflux valve 22 is also arranged upstream of the control means V, and in the exemplary embodiment the reflux valve is arranged in the receiving space 17. Thus, when the phase position is adjusted, the pressure fluid flows (when a minimum pressure load predetermined by the reflux valve 22 is reached) through the port, the filter 21 and the reflux valve 22 to the control means V, and It flows from the control means V to the phase setter S according to the position of the axis of the valve piston 24.
In order to ensure a sufficient set speed of the phase setter S when there is a pressure variation in the pressure fluid supply, the phase setter S is assigned a pressure reservoir 30. The pressure reservoir 30 is arranged upstream of the control means V and downstream of the reflux valve 22 in the pressure fluid cycle. Downstream of the reflux valve 22, more specifically, downstream of the valve seat of the reflux valve 22, the connection conduit 29 is branched to the pressure reservoir 30.
The attachment housing G (in the exemplary embodiment, again the attachment housing part 14) forms a fixed wall 18 of the pressure chamber 31 of the pressure reservoir 30. Although the pressure chamber 31 is cylindrical in the exemplary embodiment, in principle, the pressure chamber is also cylindrical and may exhibit various cross sections. The pressure chamber is sealed and fluid-proofed by a stopper or cover. Apart from this cover or stopper, the attachment housing part 14 forms all of the fixed wall structure of the pressure chamber 31. The piston 32 is housed in the piston chamber 31 so that the piston can move back and forth in the longitudinal direction of the cylinder. The piston forms a movable wall structure of the pressure chamber. A spring (in the exemplary embodiment, a spiral spring) is also supported on the attachment housing part 14. The spring 33 is disposed between the attachment housing part 14 and the piston 32 and is biased to charge the piston 32 by its elastic force in a direction that reduces the volume of the pressure chamber 31. By configuring the pressure reservoir 30 with respect to its chamber volume and spring tension, the pressure reservoir 30 always ensures that the phase setter S performs at least one procedure at the required high set speed. To. The pressure reservoir 30 is not shown in FIG. The pressure reservoir 30 is located outside the cross section of FIG. 1 and can only be seen in appearance in FIG.
FIG. 3 shows in schematic representation an internal combustion engine with a device of the first exemplary embodiment installed, facilitating comparison with alternative exemplary embodiments. A drive wheel 5 'is shown, which is fixed against rotation and is arranged on and connected to the other facing surface of the camshaft 1. The camshaft 1 is driven by a crankshaft via a drive wheel 5 '. Alternatively, the drive wheel 5 ′ can also be arranged with the phase setter S on the other side, for example on the camshaft 1 (on the right side of the phase setter S in FIG. 3) or preferably the phase setter S Between the gear wheel 12 and the gear wheel 12 may be arranged at the end of the phase setter S facing away from the camshaft 1 or more preferably on the side of the gear wheel 12 facing away from the phase setter S. obtain. In such an embodiment, the shaft 9 (FIG. 1) is preferably guided out of the attachment housing G and the drive wheel 5 ′ is fixed against rotation and connected to the shaft 9 outside the attachment housing G. Is done. In another alternative variant, the gear wheel 5 is driven for the camshafts 1 and 2, namely the phase setter S and the vacuum pump P, by toothing engagement with another gear member driven by the crankshaft. A wheel can be formed. In such an embodiment, the phase setter S adjusts the phase position of the camshaft 1, while the camshaft 2 is driven in a fixed rotational speed relationship with respect to the crankshaft. With respect to the predetermined technique selected herein, in such an embodiment, the rotor 8 is a first rotor and the rotor 7 is a second rotor.
The device is also adapted to detection means D for ascertaining the rotational angular position of the camshaft to be adjusted (camshaft 2 in the exemplary embodiment). The detection means D comprises a rotational angle transmitter 35 (eg a transmitter wheel), which is arranged on the second rotor 8 of the phase setter S and thus depends on its rotational movement. In the exemplary embodiment, the transmitter 35 is placed on the outer peripheral surface of the rotor 8 and fixed to rotation and connected to the rotor 8 for the purpose of being subordinated by the rotor 8. The sensor 36 is arranged to face the transmitter 35.
The sensor 36 can in particular be supported on the attachment housing G. The detection means D also includes an evaluation means 37, which is preferably arranged in the attachment housing G or on the attachment housing G in the same way and processes the signal from the sensor 36. The detecting means D is a part of the adjusting means for setting the phase position of the rotor 8 and is therefore a part of the camshaft 2. A guide variable that depends on the current operating state of the internal combustion engine is predetermined for the adjusting means by the controller of the internal combustion engine. The output signal of the detection means D is input as a control variable. From the guide variable and the control variable, the adjusting means forms a setting variable for the phase setter S, which is input to the control means V via the port 28 (FIG. 2). The setting variable is preferably input to the control means V via the port 28. Alternatively, the adjusting means can also be arranged in or on the attachment housing G, and the controller of the higher order internal combustion engine is input to the control means V via the port 28.
FIG. 4 shows a schematic representation corresponding to FIG. 3 of an internal combustion engine in which the device of the second exemplary embodiment is installed. The second exemplary embodiment differs from the first exemplary embodiment only with respect to the drive for the vacuum pump P. In the second exemplary embodiment, the transmission members 10 and 11 of the vacuum pump P are fixed against rotation and connected to the gear wheel 6 so that it is rotationally driven by the second rotor 8, The gear wheel 6 and the camshaft 2 are fixed rotatably. The gear wheels 12 and 13 are omitted. The description made for the driving variables of the first exemplary embodiment also applies to the second embodiment.
FIG. 5 shows the installed device of the third embodiment. The phase setter S and the rotatable transmission members 10 and 11 of the vacuum pump P are arranged along the rotational axis R 1 of the camshaft 1 and offset by an axis relative to each other. The rotor 7 is also fixed against rotation and connected to the camshaft 1, and the rotor 8 is connected to the gear wheel 5. The vacuum pump P is arranged on the phase setter side facing away from the camshaft 1. The rotor 10 of the vacuum pump P is fixed with respect to the rotation and is connected to the first rotor 7 of the phase setter S. Accordingly, the rotor 7 is driven by the crankshaft via the camshaft 1 and, when rotating, makes the rotor 8 subordinate according to the relative phase position of the rotor 7 and the rotor 8. The phase setter S and the vacuum pump P are arranged in the same attachment housing G, which corresponds to the first exemplary implementation to arrange the phase setter S and the vacuum pump P coaxially. Extended in comparison with the form and the second exemplary embodiment. As in the first exemplary embodiment, the vacuum pump P branches on the output side of the phase setter S to the camshaft 2 via the rotor 8 in one direction and to the vacuum pump in the other direction. Is removed from the force flow.
FIG. 6 shows the device installed in the fourth embodiment. The fourth embodiment is a drive wheel on the same opposite side of the camshaft 1 as the device in which the third embodiment and the camshaft 1 are described as a variation of the first exemplary embodiment. By placing 5 ′ (coupled to the crankshaft), it is different in that it is rotationally driven via a phase setter S. A shaft 9 fixed to the rotation and connected to the camshaft 1 projects through the attachment housing G on the side of the device facing away from the camshaft 1, so that the drive wheel 5 ′ is attached to the attachment It can be arranged on the shaft 9 outside the housing G.
FIG. 7 shows the installed device in a fifth exemplary embodiment. The device comprises two phase setters S mounted by an enlarged attachment housing G, ie one phase setter S for the camshaft 1 and the other phase setter S for the camshaft 2. The second rotor 8 of one phase setter S is fixed with respect to rotation and connected to the camshaft 1, and the second rotor 8 of the other phase setter S is fixed with respect to rotation, Connected to the camshaft 1. The first rotors 7 of the two phase setters S are fixed to rotation and are connected to the gear wheel, one to the gear wheel 5 and the other to the other gear wheel 6. One of the gear wheels 5 and 6 is driven by the crankshaft and outputs to the other of the camshafts 1 and 2 via the assigned phase setter S, respectively. For example, if the camshaft 1 is located closer to the crankshaft in the drive chain, the crankshaft 1 drives the rotor 7 of the assigned phase setter S via the gear wheel 5, which The rotor 8 of the same phase setter S is driven, and the camshaft 1 to which the rotor 8 is adjusted is driven. The gear wheel 5 also outputs to the gear wheel 6. The gear wheel 6 outputs to the rotor 8 via the rotor 7 of the other phase setter S, and the rotor 8 is fixed to the rotation and connected to the camshaft 2. As in the third exemplary embodiment and fourth exemplary embodiments, one of the phase setter S, with a vacuum pump P, it is disposed along the rotation axis R 1. The second rotor 7 is fixed against rotation and is connected to the transmission members 10 and 11, ie to the rotor 10 of the vacuum pump P. An attachment housing G, preferably an attachment housing part 14 molded as one part, mounts the second rotor 7 directly and indirectly through the shaft 9 to the first rotor 8 respectively. .
Where there is no description made with respect to the second, third, fourth and fifth exemplary embodiments, the description made with respect to the first exemplary embodiment applies.
FIG. 1 is a device of a first exemplary embodiment installed on an internal combustion engine. FIG. 2 is a cross-section AA in FIG. FIG. 3 is a device of the first exemplary embodiment in schematic representation. FIG. 4 is a device of a second exemplary embodiment. FIG. 5 is a device of a third exemplary embodiment. FIG. 6 is a device of a fourth exemplary embodiment. FIG. 7 is a device of a fifth exemplary embodiment.
1, 3 Cam 2 Camshaft 4 Engine housing, cylinder head 5, 6, 12, 13 Gear wheel 7 First rotor 8 Second rotor 9 Shaft 9a Slope, internal cone 9b Fixing screw 10 Rotor 11 Vane 11a Slide element 14 Attachment housing part 15 Bearing socket 16 Housing space 17 Housing space, port 18 Pressure chamber wall structure 19 Inner cover 20 Outer cover 21 Filter, sieve 22 Block means, return valve 23 Valve cylinder 24 Valve piston 25, 26 Control conduit 27 Feedback conduit 28 Port 29 Fluid conduit 30 Pressure reservoir 31 Pressure chamber 32 Piston 33 Spring 35 Rotating angle transmitter 36 Sensor 37 Evaluation means D Detection means G Attachment housing P Pump S Phase setter V control means, the control valve R1, R 2, R 10 rotary shaft
The phase setter (S) includes a first rotor (7) for driving depending on the rotational speed of the crankshaft, and a second rotor for output to the camshafts (1, 2). (8), wherein the attachment housing (G) can rotate at least one of the rotors (7, 8) directly or via at least one intermediate member (9). Device according to claim 1, characterized in that it is installed.
The attachment housing (G) mounts one of the rotors (7, 8) directly and rotatably, and the other rotatably via at least one intermediate member (9). a device according to claim 2.
The phase setter (S) includes a rotor (7, 8), and the attachment housing (G) is mounted on the attachment housing (G) directly or via at least one intermediate member. Sometimes the rotor (7,8) can be fixed against rotation and mounted on the camshaft (1,2) of the internal combustion engine or another camshaft (2,1) It may be mounted above, in position and orientation, mounting the said rotor (7,8), the device according to one of claims 1 to 3.
One of the rotor (7, 8), by pressing connection, characterized in that the can be connected to the camshaft (1,2), the pressing connection, the end of the conical shape of the cam shaft 5. The device according to claim 2 , comprising pressing against a corresponding conical portion of the rotor .
The internal combustion engine comprises another camshaft (2, 1), one of the camshafts (1, 2) is driven at the end of the shaft, and the phase setter (S) is connected to the camshaft. Device according to one of claims 1 to 5, characterized in that it can be mounted at the end of the other shaft by one of (1, 2).
The phase setter (S) and the vacuum pump (P) are coupled together, the phase setter driving the vacuum pump, or the vacuum pump driving the phase setter. The device according to claim 1.
The phase setter (S) comprises a driving surface (9a), the said drive surface, can be introduced torque to drive the said phase set data at the output side of the phase setter (S), the force flow the Branching into one output end (5) and another second output end (12), and the camshaft (1, 2) to be adjusted via the first output end 8. Device according to one of claims 1 to 7, characterized in that it is driven and the vacuum pump (P) is driven via the second output end.
The phase setter (S), said the first rotor for driving depends on the rotation speed of the crankshaft (7), a second rotation for output to the camshaft (1, 2) The attachment housing (G) is configured to rotatably install a gear wheel (5), and the camshafts (1, 2) are connected to the rotor (7) via the gear wheel. , 8) or via the gear wheel one of the rotors (7, 8) can be driven directly or via at least one intermediate member (9) Device according to one of claims 1 to 8, characterized in that it can be actuated.
Wherein wherein the phase setter (S) and that said vacuum pump (P) is arranged to be adjacent, the device according to one of the claims 1 to 9.
The internal combustion engine comprises at least two camshafts (1, 2), which camshafts (1, 2) can be coupled together by a gear member (5, 6) for common drive. The attachment housing (G) mounts at least one (5) of the gear members (5, 6) directly or via at least one intermediate member (9). The device according to claim 10.
The phase setter (S) and the vacuum pump (P) are coupled together by gear members (5, 6; 12, 13), via which the phase setter drives the vacuum pump; Or the vacuum pump drives the phase setter;
11. A device according to one of claims 1 to 10, wherein at least one of:
The phase setter (S) and the vacuum pump (P) are coupled to each other by the gear members (5, 6; 12, 13), via which the phase setter drives the vacuum pump Or the vacuum pump drives the phase setter;
The device of claim 11, wherein at least one of:
The phase setter, a first rotor for driving (7),該駆dynamic depends on rotation speed of the crankshaft, a first rotor (7), the camshaft (1 , 2) and a second rotor (8) for output to said gear member (5, 6; 12, 13), wherein one of said rotors (7, 8) is said to be said Device according to one of claims 11 to 12 , characterized in that it is coupled to a vacuum pump (10, 11).
Said gear member (5, 6; 12, 13) comprises at least one traction means, said traction means being based on a friction fit or a positive fit using a toothed belt or chain , or on said gear member 15. The one of claims 11 to 14 , characterized in that (5, 6; 12, 13) is just a gear wheel (5, 6; 12, 13), preferably a toothed wheel. Device described in.
At least one of the gear member (5) or the gear member (5, 6; 12, 13) is disposed in or on the attachment housing (G). The device according to one of claims 11 to 15 .
The rotor (7, 8) of the phase setter (S) is arranged so that the rotor (7, 8) can rotate around the first rotation axis (R 1 ), and the vacuum pump (P ) Of the transmission member (10, 11) is arranged so that the transmission member (10, 11) can rotate around another second rotation axis (R 10 ) , and the second rotation axis (R) Device according to one of claims 1 to 16 , characterized in that 10 ) is preferably spaced parallel to the first axis of rotation.
The rotors (7, 8) of the phase setter (S) and the transmission members (10, 11) of the vacuum pump (P) can rotate around a common rotation axis (R 1 ). characterized in that it is arranged to, claims 1 to 9, the device according to one of claims 11 to claim 16.
19. Device according to claim 18 , characterized in that the transmission member (10, 11) is fixed against rotation by a gear member and is connected or coupled to the rotor (7, 8).
20. Device according to one of claims 1 to 19 , characterized in that the phase setter (S) can be adjusted by hydraulic pressure, pneumatic pressure or electricity.
To ensure a sufficiently high setting rate of the phase setter (S), the phase setter (S), using a pressure fluid, preferably by hydraulic, obtained is adjusted, the pressure reservoir (30) 21. A device according to one of claims 1 to 20 , characterized in that it is provided for the pressure fluid.
Pressure reservoir (30) is provided with a pressure chamber (31), pressure chamber (31) is Kabe構granulated to thus define which can be moved against the restoring elastic force, by the attachment housing (G) either supported, or at least one of and Turkey mounted so that it can be moved back and forth, characterized in that are met, the device according to claim 21.
Piston (32), but at least one of the forming pre Kikabe structure characterized in that it is filled, device of claim 22.
The phase setter (S), using the pressure fluid, preferably hydraulically, adjusted to obtain, by the attachment housing (G) and that can be supplied with pressure fluid;
The vacuum pump (P) may be provided with lubricating oil by the attachment housing (G);
The phase setter (S), using the pressure fluid, preferably hydraulically, controlled resulting, engine housing (4) of the internal combustion engine, or the cam shaft (1, 2) of the internal combustion engine or another The pressure fluid can be supplied through the camshaft (2, 1) of
The phase setter (S), using the pressure fluid, preferably hydraulically, controlled resulting, at least one control conduit (25, 26) is, to charge the said phase setter (S) in the pressure fluid 24. Device according to one of claims 1 to 23 , characterized in that at least one of: being supplied via the attachment housing (G) is fulfilled.
The phase setter (S), using the pressure fluid, preferably hydraulically, controlled resulting, blocking means (22) is preferably disposed in the in the attachment housing (G), of the pressure fluid feed 25. A device according to one of claims 1 to 24 , characterized in that:
Before SL blocking means (22) is arranged upstream of the pressure reservoir (30) The device of claim 25 when dependent on one of claims 21 to claim 23.
A filter (21) is preferably arranged in the attachment housing (G) or on the attachment housing (G) in the pressure fluid supply for the phase setter (S);
25. The device of claim 24, wherein at least one of:
A fluid port (17) for connecting the attachment housing (G) for the pressurized fluid or lubricant to a fluid feed in or on the engine housing (4) of the internal combustion engine. 28. Device according to one of claims 26 or 27 , characterized in that it comprises:
The phase setter (S) includes a first rotor (7) and a second rotor (8), and the rotational angle position of the rotor (7, 8) relative to each other can be adjusted. control means for adjusting the angular position (V) is characterized and being disposed in the attachment housing receiving space (16) in the (G), of the claims 1 to 28 The device according to 1 above.
The internal combustion engine includes a first cam shaft and a second cam shaft (1, 2), and the phase setter (S) adjusts the phase position of the first cam shaft (1, 2). And the device comprises another phase setter (S) for adjusting the phase position of the second camshaft (1, 2), the attachment housing also preferably Forming a housing or at least a housing cover for covering the phase setter (S), wherein the other phase setter (S) is preferably formed according to at least one of claims 1 to 29. to a device according to one of claims 1 to claim 29.
With the camshaft (1,2) of the rotary angle position to confirm the detection means is regulated (D), detection means (D), it is preferable that the attachment housing (G) or in the attachment housing ( 31. A device according to one of claims 1 to 30 , arranged on G).
It said detection means (D) comprises a rotational angle transmitter (35) and a sensor (36) for detecting the rotational angle position of the rotation angle transmitter (35), the rotary angle transmitter, preferably Is arranged on the rotor (7, 8) of the phase setter (S), and the sensor (36) is preferably arranged in the attachment housing (G) or on the attachment housing (G). 32. The device according to claim 31 , characterized in that
33. One of claims 1 to 32 , mounted on the internal combustion engine, for adjusting the phase position of the camshaft (1, 2) relative to the crankshaft and supplying a partial vacuum to the assembly. An internal combustion engine comprising:
34. Internal combustion engine according to claim 33 , characterized in that the attachment housing (G) is mounted on an engine housing (4) of the internal combustion engine, preferably on a cylinder head.
JP2008114494A 2007-04-27 2008-04-24 Camshaft phase setter and vacuum pump for internal combustion engines Expired - Fee Related JP4896921B2 (en)
DE102007020431.2 2007-04-27
DE200710020431 DE102007020431B4 (en) 2007-04-27 2007-04-27 Camshaft phaser and vacuum pump for an internal combustion engine
JP2008274944A JP2008274944A (en) 2008-11-13
JP4896921B2 true JP4896921B2 (en) 2012-03-14
ID=39645383
JP2008114494A Expired - Fee Related JP4896921B2 (en) 2007-04-27 2008-04-24 Camshaft phase setter and vacuum pump for internal combustion engines
US (1) US8061317B2 (en)
EP (2) EP1985813B1 (en)
JP (1) JP4896921B2 (en)
DE (1) DE102007020431B4 (en)
HU (1) HUE036888T2 (en)
PL (1) PL2230390T3 (en)
DE102009024482A1 (en) 2009-06-10 2010-12-16 Schwäbische Hüttenwerke Automotive GmbH Camshaft phaser with pressure accumulator
US20110073053A1 (en) * 2009-09-30 2011-03-31 Koyo Bearings Usa Llc Method for cam-shaft phase shifting control using cam reaction force
DE102009050490B4 (en) 2009-10-23 2015-05-13 Schwäbische Hüttenwerke Automotive GmbH Attachment module with seal
JP5527524B2 (en) * 2010-02-12 2014-06-18 三菱自動車工業株式会社 Engine with variable valve system
DE102010025882A1 (en) * 2010-07-02 2012-01-05 Schaeffler Technologies Gmbh & Co. Kg Device for changing the relative angular position of a camshaft relative to a crankshaft of an internal combustion engine
DE102010034014B4 (en) 2010-08-11 2015-06-25 Schwäbische Hüttenwerke Automotive GmbH Sinter composite and process for its preparation
DE102010053685B4 (en) 2010-12-08 2014-10-30 Schwäbische Hüttenwerke Automotive GmbH Device for adjusting the rotational angular position of a camshaft
DE102011004539A1 (en) 2011-02-22 2012-08-23 Schwäbische Hüttenwerke Automotive GmbH Camshaft phaser with improved locking device
DE102011077027A1 (en) 2011-06-07 2012-12-13 Schaeffler Technologies AG & Co. KG Bell housing with integrated pressure accumulator with crimped cover
DE102011084059B4 (en) 2011-10-05 2016-12-08 Schwäbische Hüttenwerke Automotive GmbH Control valve with integrated filter and camshaft phaser with the control valve
JP6003439B2 (en) * 2012-09-18 2016-10-05 アイシン精機株式会社 Valve timing control device
US9157426B2 (en) * 2012-09-20 2015-10-13 Ford Global Technologies, Llc Overheat control mechanism for electrical vacuum pumps
JP6070231B2 (en) * 2013-02-01 2017-02-01 スズキ株式会社 Vacuum pump mounting structure
US9506379B2 (en) 2013-03-11 2016-11-29 Schaeffler Technologies AG & Co. KG Concentric camshaft phaser
FR3008137B1 (en) * 2013-07-04 2015-08-07 Peugeot Citroen Automobiles Sa Assembly of a camshaft system and a hydraulic rotary distributor for an engine
JP6255777B2 (en) 2013-07-31 2018-01-10 アイシン精機株式会社 Valve timing control device
DE102013219075A1 (en) * 2013-09-23 2015-03-26 Schaeffler Technologies Gmbh & Co. Kg Multi-point lock of a camshaft adjuster and method for operating a camshaft adjuster
FR3013772B1 (en) * 2013-11-22 2015-12-25 Peugeot Citroen Automobiles Sa Dispensing case integrating a vacuum pump drawn by a drive belt of the accessory frame of a cylinders casing
DE102016214914A1 (en) 2016-08-10 2018-02-15 Schwäbische Hüttenwerke Automotive GmbH Partikelabscheidesystem
CN110291302A (en) * 2017-01-30 2019-09-27 利滕斯汽车合伙公司 Disengaging type vacuum pump system
US2861557A (en) 1956-12-12 1958-11-25 Gen Motors Corp Hydraulic timer
GB2130300A (en) * 1982-11-13 1984-05-31 Ford Motor Co I c engine vacuum pump mounting arrangement
JPH0550562B2 (en) 1983-07-27 1993-07-29 Honda Motor Co Ltd
DE3929621A1 (en) 1989-09-06 1991-03-07 Bayerische Motoren Werke Ag A device for relative angular adjustment of a shaft to a drive wheel, especially the camshaft of an internal combustion engine
JPH03260344A (en) 1990-03-08 1991-11-20 Honda Motor Co Ltd Method for controlling internal combustion engine
JPH04303132A (en) * 1991-03-29 1992-10-27 Mazda Motor Corp Structure of engine cover
DE4210742A1 (en) * 1992-04-01 1993-10-07 Bosch Gmbh Robert Hydraulic controller of relative rotation of camshaft and sprocket - incorporates radial piston pump for positioning of double-acting piston under pressure of fluid supplied through EM valve
DE19529277A1 (en) * 1995-08-09 1997-02-13 Bayerische Motoren Werke Ag A method of operating a controlled hydraulically controlled / camshaft adjusting device for internal combustion engines
DE19745670A1 (en) * 1997-10-17 1999-04-22 Schaeffler Waelzlager Ohg Valve timing control for internal combustion engine
JP2000008987A (en) * 1998-06-29 2000-01-11 Yamaha Motor Co Ltd Fuel pump arrangement structure for fuel injection type engine
US6588381B2 (en) * 2001-02-15 2003-07-08 Litens Automotive Internal combustion engine combination with direct camshaft driven coolant pump
ITTO20020149A1 (en) 2002-02-21 2003-08-21 C R F Societa Con Sortile Per A multi-cylinder internal combustion engine with electronically controlled hydraulic device for variable actuation of the valves,
JP2003322034A (en) * 2002-04-30 2003-11-14 Denso Corp Internal-combustion engine
DE20221858U1 (en) * 2002-12-21 2008-09-04 Schaeffler Kg Internal combustion engine with a device for hydraulic rotation angle adjustment of its camshaft with respect to its crankshaft and with a vacuum pump for a servo consumer, in particular for a brake booster
DE10346448B4 (en) * 2003-10-07 2017-03-30 Daimler Ag Camshaft adjuster for an internal combustion engine
JP2006291944A (en) * 2005-03-15 2006-10-26 Aisin Seiki Co Ltd Valve opening/closing timing control device
FR2885174A1 (en) * 2005-04-28 2006-11-03 Renault Sas Internal combustion engine for e.g. motorizing motor vehicle, has vacuum pump integrated, using recess, in assembly formed by cylinder head and valve mechanism casing, cover placed at outer end of recess
2007-04-27 DE DE200710020431 patent/DE102007020431B4/en active Active
2008-04-22 HU HUE10163641A patent/HUE036888T2/en unknown
2008-04-22 EP EP20080154933 patent/EP1985813B1/en active Active
2008-04-22 PL PL10163641T patent/PL2230390T3/en unknown
2008-04-22 EP EP10163641.3A patent/EP2230390B1/en active Active
2008-04-24 JP JP2008114494A patent/JP4896921B2/en not_active Expired - Fee Related
2008-04-25 US US12/109,729 patent/US8061317B2/en active Active
DE102007020431A1 (en) 2008-10-30
EP2230390A1 (en) 2010-09-22
EP1985813B1 (en) 2013-07-31
HUE036888T2 (en) 2018-08-28
US20080283010A1 (en) 2008-11-20
JP2008274944A (en) 2008-11-13
US8061317B2 (en) 2011-11-22
DE102007020431B4 (en) 2010-07-22
EP1985813A2 (en) 2008-10-29
PL2230390T3 (en) 2018-04-30
EP2230390B1 (en) 2017-08-02
EP1985813A3 (en) 2010-02-17
CN101495338B (en) 2012-07-04 Hybrid drive device
JP2009515090A (en) 2009-04-09 Control valve for a device for variably adjusting the control time of a gas exchange valve of an internal combustion engine
KR20070020234A (en) 2007-02-20 Drive device for hybrid vehicle
US6523436B2 (en) 2003-02-25 Power transmission system of an automobile
US20030051759A1 (en) 2003-03-20 Eccentric valve
US20100101351A1 (en) 2010-04-29 Transmission
EP2651682B1 (en) 2018-01-10 Method for mounting drive train components of a hybrid drive
US5170756A (en) 1992-12-15 Arrangement for changing the relative rotating position of shafts in an internal-combustion engine
US6656069B2 (en) 2003-12-02 Transmission unit
EP1750963A1 (en) 2007-02-14 Transmission element for a parallel hybrid traction chain