Source: https://patents.google.com/patent/DE602004000575T2/en
Timestamp: 2020-08-08 10:31:57
Document Index: 759454107

Matched Legal Cases: ['art 16', 'art 16', 'art 16', 'art 16', 'arts 16', 'arts 47', 'arts 47']

DE602004000575T2 - engine - Google Patents
DE602004000575T2
DE602004000575T2 DE200460000575 DE602004000575T DE602004000575T2 DE 602004000575 T2 DE602004000575 T2 DE 602004000575T2 DE 200460000575 DE200460000575 DE 200460000575 DE 602004000575 T DE602004000575 T DE 602004000575T DE 602004000575 T2 DE602004000575 T2 DE 602004000575T2
DE200460000575
DE602004000575D1 (en
Akira 4-1 Chuo 1-chome Wako-shi Hamauzu
Daisuke 4-1 Chuo 1-chome Wako-shi Hayashi
Hirohisa 4-1 Chuo 1-chome Wako-shi Kitaura
Mamoru 4-1 Chuo 1-chome Wako-shi Mikame
Takashi 4-1 Chuo 1-chome Wako-shi Umemoto
Hiroshi 4-1 Chuo 1-chome Wako-shi Uruno
2006-05-18 Publication of DE602004000575D1 publication Critical patent/DE602004000575D1/en
2006-08-24 Publication of DE602004000575T2 publication Critical patent/DE602004000575T2/en
The The present invention relates to an engine in which an engine body with a crankcase includes a plurality of cylinder bores.
One Motor of the type described is already from a document, e.g. Japanese Laid-Open Patent Publication No. 2002-213302.
If, by the way such a motor as described above, e.g. in an airplane is installed, it is necessary to take a countermeasure against electromagnetic Waves and a high voltage for to take electrical parts intended for the engine. In the conventional Boxer engine it is necessary to discreetly on different sections shielding the motor arranged electrical parts individually. Therefore, must Many parts are used at high cost and this leads to one Increase in the number of parts and an increase in the cost and it It is necessary that the engine is big.
Engines according to the preamble of claim 1 are in the US Pat. No. 6,296,536 . US 5,003,933 and US 2002/0179025.
The The present invention has been made in view of a situation as above and it is an object of the present invention to To provide a boxer engine, shielded in the electrical parts are while allows is a reduction in the number of parts and beyond also to achieve the cost and a generally compact configuration to reach the engine.
to solution the object described above, an engine is provided according to the invention, such as executed in claim 1. The engine includes an engine body with a crankcase and a plurality of cylinder bores. One common to all cylinder bores Suction chamber is arranged laterally of the crankcase. A plurality of electrical parts is arranged around the suction chamber and the multiple electrical parts are with a shield cover covered on the engine body is mounted so that it at least a part of the suction chamber covers.
According to the invention the engine body the Cylinder bores facing each other and from opposite Pages ago between a rotatably mounted on the crankcase Receive crankshaft, and the suction chamber is located above the crankcase.
According to the in Claim 2 executed Invention is an engine in addition to that set forth in claim 1 Configuration of the invention, characterized in that an electronic Control unit, which is one of the electrical parts, at one Outer surface of a Sidewall of the suction chamber is attached, and that a sensor for detecting a situation in the suction chamber from the electronic Control unit passes through the side wall and into the suction chamber is introduced.
According to the in Claim 1 executed Invention are the multiple electrical parts with the single Shielding covered and shielded by this. As a result, can the electrical parts are shielded while it is enabled to achieve a reduction in the number of parts and the cost and to achieve a generally compact configuration of the engine.
According to the in Claim 1 executed Invention can be used in the shielding of a plurality of electrical Share in a boxer engine a reduction in the number of parts and above In addition, the cost can be achieved and a generally compact Configuration of the boxer engine can be achieved.
According to the in Claim 2 executed Invention may shield the electronic control unit and the sensor for detecting a situation in the suction chamber, the one input for The electronic control unit is supposed to be directly with connected to the electronic control unit. As a result, can the work to connect lines are eliminated.
A embodiment of the present invention we will now refer to in connection with in The working examples of the present invention shown in the accompanying drawings Invention described.
1 is a side view of an engine of a first working example;
2 is a partially cutaway plan view of the engine;
3 is an enlarged front view as seen in the arrow 3 by 1 designated direction;
4 is a plan view of an engine body;
5 is a cross-sectional view taken along the line 5-5 of 3 ;
6 is a cross-sectional view taken along the line 5-5 of 3 ;
7 is a partially cutaway plan view of an engine of a second working example;
8th is an enlarged cross-sectional view taken along the line 8-8 of 7 ;
9 is a plan view of an engine of a third working example and.
10 is an enlarged cross-sectional view taken along the line 10-10 of 9 ,
1 to 6 show a first working example in which the present invention is applied to a four-cylinder four-stroke boxer engine. 1 is a side view of the engine. 2 is a partially cutaway plan view of the engine. 3 is an enlarged front view as seen in the arrow 3 by 1 designated direction. 4 is a plan view of a motor body. 5 is a cross-sectional view taken along the line 5-5 of 3 , 6 FIG. 12 is a cross-sectional view of the engine in an on-board condition. FIG.
Referring first to 1 to 3 For example, the four-cylinder four-stroke boxer engine is installed in an airplane and accommodated in a front hood of an airplane body such that an axial line of a crankshaft 11 in the forward-backward direction. A propeller with a plurality of propeller blades is coaxial with the crankshaft 11 coupled.
Now also referring to 4 includes an engine body 12 of the engine a left engine block 13L , which is located from the rear on the left side from the view of the engine, and a right engine block 13R , which is arranged from the rear on the right side from the view of the engine.
The left engine block 13L contains a left crankcase 14L and a left cylinder block 15L that with the left crankcase 14L is coupled. The right engine block 13R contains a right crankcase 14R that with the left crankcase 14L coupled, and a right cylinder block 15R that with the right crankcase 14R on the left crankcase 14L coupled opposite side.
The left cylinder block 15L contains a left cylinder wall part 16L that with the left crankcase 14L coupled, and a left cylinder head 17L integral with the left cylinder wall part 16L on the left crankcase 14L opposite side is formed. The right cylinder block 15R contains a right cylinder wall part 16R that with the right crankcase 14R coupled, and a right cylinder head 17R that is integral with the right cylinder wall part 16R on the right crankcase 14R opposite side is formed.
Further referring to FIG 5 are cylinder bores 18L . 18L ; 18R . 18R individually in pairs on the cylinder wall parts 16L . 16R , the cylinder blocks 15L . 15R provided so that they face each other and the crankshaft 11 from between the opposite sides, and such that they are in a direction of the axial line of the crankshaft 11 offset from each other. piston 20L , ..., 20R , ... are slidable in the cylinder bores 18L , ..., 18R , ... fixed in such a way that combustion chambers 19L , ..., 19R , ... between the cylinder bores 18L , ..., 18R , ... and the cylinder heads 17L , ..., 17R , ... are formed.
The cylinder blocks 13L . 13R are arranged in an opposed relationship so that the axial lines of the cylinder bores 18L , ..., 18R , ... the same substantially horizontally. The left and right crankcases 14L . 14R are attached to each other in such a way that they together to form a crankcase 21 interact. The crankshaft 11 is with the pistons 20L , ..., 20R , ... through connecting rods 22L , ..., 22R , ... connected and rotatable between the left and right crankcase 14L . 14R stored.
A front crankpin bearing wall 23L , a first middle crank pin bearing wall 24L , a second middle crankpin bearing wall 25L , a third middle crank pin bearing wall 26L and a rear crankpin bearing wall 27L are in spaced relationship forwards and backwards on the opposite front and rear sides of the connecting rods 22L , ... on the left crankcase 14L provided and store a left half section of the crankshaft 11 , A front crankpin bearing wall 23R , a first middle crank pin bearing wall 24R , a second middle crankpin bearing wall 25R , a third middle crank pin bearing wall 26R and a rear crankpin bearing wall 27R are in spaced relationship forwards and backwards on the opposite front and rear sides of the connecting rods 22R , ... on the right crankcase 14R provided and store a right half section of the crankshaft 11 , The crankshaft 11 is rotatable by the crank pin bearing walls 23L to 27L the left crankcase 14L and the crankpin bearing walls 23R to 27R the right crankcase 14R stored.
The crankpin bearing walls 23L to 27L of the left and right crankcases 14L . 14R are through a pair of studs 28 , ... and a Couple of nuts 29 , ... attached to the crankshaft 11 between them from above and below.
By the way, the pin bolts 28 , ... for securing the front crank pin bearing walls 27L . 27R designed longer than the pin bolt 28 , ... for securing the first, second and third middle crankpin bearing walls 24L to 26L ; 24R to 26R ,
The nuts 29 , ... are on the front crankpin bearing wall 23L the left crankcase 14L inserted pin bolt 28 , ... screwed and run through the front crank pin bearing wall 23R the right crankcase 14R and stand with an outer surface of the right crankcase 14R engaged. Further, the nuts 29 , ... on the in the rear crankpin bearing wall 27R the right crankcase 14R inserted pin bolt 28 , ... screwed and run through the rear crank pin bearing wall 27L the left crankcase 14L and stand with an outer surface of the left crankcase 14L engaged.
Further, the nuts 29 , ... on the in the second and third medium cure belzapfenlagerwand 25L . 26L the left crankcase 14L inserted pin bolt 28 , ... screwed and run through the second and third middle crank pin bearing wall 25R . 26R the right crankcase 14R and stand with the second and third center crank pin bearing wall 25R . 26R the right crankcase 14R engaged. Further, the nuts 29 , ... on the in the first middle crank pin bearing wall 24R the right crankcase 14R inserted pin bolt 28 , ... screwed and run through the first middle crank pin bearing wall 24L the left crankcase 14L and stand with the first middle crank pin bearing wall 24L the left crankcase 14L engaged.
The left, right engine block 13L . 13R are by pairs of passage bolts 30 , ... and two sets of pairs of pin bolts 32 coupled to each other on sections of the left and right crankcases 14L . 14R are arranged, which are the first, second and third middle crank pin bearing wall 24L to 26L ; 24R to 26R correspond.
The passage bolts pass through the engine blocks 13L . 13R in such a way that it is with the crankshaft 11 interact, with the stud bolts in between 28 Individually in pairs in the first to third center crankpin bearing wall 24L to 26L ; 24R to 26R are arranged to the first, second and third middle crank pin bearing wall 24L to 26L ; 24R to 26R to attach to each other. nuts 31 are individually on the opposite end portions of the passage bolts 30 , ... screwed, from the cylinder heads 17L . 17R of the left, right engine block 13L . 13R protrude. To prevent the passage bolts 30 , ... while tightening the nuts 31 are also tool engagement sections 30a , ..., for example, with a hexagonal shape, for engagement with a tool not shown coaxially at the opposite ends of the through-bolt 30 , ..., so that they individually from the nuts 31 protrude.
The pin bolts 32 one of the two sets of pin bolts 32 are in the front crank pin bearing wall 23R the right crankcase 14R inserted and run through the left engine block 13L , and nuts 33 , ... are on the sections of the stud bolts 32 screwed to the left of the cylinder head 17L of the left engine block 13L protrude. Further, the other set of pin bolts 32 in the rear crankpin bearing wall 27L the left crankcase 14L inserted and runs through the right engine block 13R , and nuts 33 , ... are on the sections of the stud bolts 32 screwed down, by the cylinder head 17R of the right engine block 13R protrude.
In addition, the pin bolts 32 arranged at a position where it is connected to the crankshaft 11 interact with a pair of stud bolts in between 28 , ... for securing the front crank pin bearing walls 23L . 23R of the left, right engine block 13L . 13R pick up and another pair of pin bolts 28 , ... for fixing the rear crankpin bearing walls 27L . 27R of the left, right engine block 13L . 13R take.
A bearing cylinder 34 is common across the left and right crankcases 14L . 14R at a front portion of the crankcase 21 formed so that it protrudes forward. A front section of the crankshaft 11 runs coaxially through the bearing cylinder 34 and stands from the front end of the bearing cylinder 34 in front. A ring gear 35 is at the section of the crankshaft 11 attached, that of the front end of the bearing cylinder 34 protrudes and a not shown propeller is coaxial with the ring gear 35 appropriate. There is also a plain bearing 36 between the front portion of the bearing cylinder 34 and the crankshaft 11 arranged and an annular sealing element (not shown) is between the bearing cylinder 34 and the crankshaft 11 forward of the plain bearing 36 arranged.
When starting the engine, a rotational drive force from a starter system 37 on the crankshaft 11 exercised. The starter system 37 is of a conventionally known type, which is a starter motor 38 and a pinion 39 includes. The starter motor is at a lower portion of the left crankcase 14L of the crankcase 21 stored. The pinion 39 is such that it is with the ring gear 35 meshes when the speed of the starter motor 38 rises above a predetermined value. After the engine is started, the pinion becomes 39 from the ring gear 35 released and returns to its original position.
A plurality of protrusions 42 , ... are projectingly in uniformly spaced relation in a circumferential direction on the crankshaft 11 in the bearing cylinder 34 intended. A pair of crank angle sensors 43 . 43 for interaction with the projections 42 , ..., to detect the crank angle, are on the bearing cylinder 34 attached in a spaced apart by a phase of 180 degrees relationship.
As in 5 is shown is a drive wheel 44 coaxially at a rear end portion of the portion of the crankshaft 11 attached, that of the rear crankpin bearing walls 27L . 27R protrudes. A rotor (not shown) of a generator attached to a rear portion of the crankcase 21 is mounted, is coaxial with respect to a relative rotation with the drive wheel 44 connected.
Incidentally, intake ducts 45L , ..., 45R , ... individually according to the combustion chambers 19L , ..., 19R , ... on upper sections of the left, right cylinder head 17L . 17R intended. The intake channels 45L , ..., 45R , ... are designed so that they branch out and each with the combustion chambers 19L , ..., 19R , ... are connected.
Arched curved intake pipes 46L , ..., 46R , ... are with the intake ducts 45L , ..., 45R , ... and electromagnetic fuel injectors 47L , ..., 47R , ..., the electrical parts for injecting fuel to the intake ports 45L , ..., 45R , ... are in each case at middle sections of the intake pipes 46L . 46R appropriate. The electromagnetic fuel injection valves 47L , ... on the side of the left engine block 13L are with a common fuel rail 48L connected while the electromagnetic fuel injection valves 47R , ... on the side of the right engine block 13R with another common fuel rail 48R are connected.
A suction chamber 49 is the side of the crankcase 21 of the engine body 12 , above the crankcase 21 in the boxer engine of the present working example, arranged in such a way that it passes through the engine body 12 is stored. In addition, upstream ends of the intake pipes 46L , ..., 46R with downstream ends of the connecting pipes 50L , ..., 50R , ... connected. Upstream end portions of the connecting pipes 50L , ..., 50R , ... are in the suction chamber 49 from opposite sides of the suction chamber 49 before and upstream end portions of the connecting pipes 50L , ..., 50R , ... open backwards in a widening state in the manner of a trumpet in the suction chamber 49 ,
A pair of left and right throttle bodies 52 . 52 have a throttle valve rotatably mounted thereon 51 and are at their downstream ends with a rear portion of the suction chamber 49 connected, and air purifier 53 . 53 are with upstream ends of the throttle body 52 . 52 connected. In addition, the air purifiers 53 . 53 , through bearing supports 54 . 54 stored, which at the suction chamber 49 are attached and run backwards.
Exhaust ports (not shown) are at lower portions of the left, right cylinder head 17L . 17R provided individually correspond to the combustion chambers 19L , ..., 19R , ... and exhaust pipes 55L , ..., 55R , ... are connected to the exhaust ducts. The exhaust pipes 55L , ..., 55R , ... run underneath and around the engine body 12 around down and also run backwards.
By the way, the head covers 56L . 56R which are substantially H-shaped, respectively with the left and the right cylinder head 17L . 17R coupled. Valve systems (not shown) for driving the intake valves and the exhaust valves to control intake air into the combustion chambers 19L , ..., 19R , ... and exhaust air from the combustion chambers 19L , ..., 19R , ... are between the head covers 56L . 56R and the cylinder heads 17L . 17R added. covers 57L . 57R for covering portions of the valve systems on the side of the intake valves are at upper portions of the head covers 56L . 56R attached. covers 58L . 58R for covering portions of the valve systems on the side of the exhaust valves are at lower portions of the head covers 56L . 56R attached.
The sections on the side of the intake valves of the valve systems, between the head covers 56L . 56R and the cylinder heads 17L . 17R are received by plunger, which in an intake stroke by the drive wheel 44 the crankshaft transmitted force are pushed upward, acted upon by a valve opening force. The rams of the individual combustion chambers 19L , ..., 19R , ... are movable in the axial direction in tappet guide tubes 59L , ..., 59R , ... used. The tappet guide tubes 59L , ..., 59R , ... are below the cylinder blocks 15L . 15R on the opposite left and right sides of the crankcase 21 arranged and connect middle Ab cuts forwards and backwards from lower sections of the left and right crankcases 14L . 14R and the head covers together.
The sections on the side of the exhaust valves of the valve systems, between the head covers 56L . 56R and the cylinder heads 17L . 17R are absorbed by tie rods, which in a Abgashub by the drive wheel 44 the crankshaft transmitted force are applied downward, applied to a valve opening force. The tie rods of the combustion chambers 19L , ..., 19R , ... are for movement in the axial direction in pull rod guide tubes 60L , ..., 60R , ... used. The Zugstangenführ ungsrohre 60L , ..., 60R , ... are below the tappet guide tubes 59L , ..., 59R arranged and connecting central portions forward and backward of lower portions of the left and right crankcases 14L . 14R and the head covers together.
Pairs of spark plugs 61L . 61L ..., 61R . 61R ... are single for the combustion chambers 19L , ..., 19R , ... each on the cylinder heads 17L and 17R appropriate. ignition coils 62L , ..., 62R , ..., which are electrical parts, are on side surfaces of upper portions of the cylinder heads 17L . 17R between the intake pipes 46L . 46L ; 46R . 46R mounted so that they for each pair on the opposite sides of the suction chamber 49 lie next to each other. Pairs of high voltage cables 63 , ... are single with the ignition coils 62L , ..., 62R , ... connected and with the spark plugs 61L . 61L , ..., 61R . 61R , ... connected.
To allow the ignition with certainty in each of the combustion chambers 19L , ..., 19R , ... occurs even if one of the ignition coils 62L . 62R in a couple are also the high voltage cables 63 . 63 in pairs with the ignition coils 62L , ..., 62R , ... are connected with the spark plugs 61L , ..., 61R , ... of the various combustion chambers 19L , ..., 19R , ... connected.
An electronic control unit 64 , which is an electrical part, is on an outer surface of a front side wall of the suction chamber 49 installed to control the operation of the motor. An intake pressure sensor 65 and an intake air temperature sensor 66 for detecting each of the suction pressure and the intake air temperature in the suction chamber 49 pass through the front side wall of the suction chamber 49 in the suction chamber 49 ,
Incidentally, the electromagnetic fuel injection valves 47L , ..., 47R , ..., the ignition coils 62L , ..., 62R , ... and the electronic control unit 64 which are electrical parts to the suction chamber 49 arranged around. In this case, the electromagnetic fuel injection valves 47L , ..., 47R , ..., the ignition coils 62L , ..., 62R , ... and the electronic control unit 64 through a shield cover 67 covered, the so on the engine body 12 attached to at least a part of the suction chamber 49 covers.
The shield cover is formed of a steel sheet, for example, such that in the present working example, the largest part except for a rear portion of the suction chamber 49 and an upper portion of the engine body 12 covers. Also different from the ignition coils 62L , ..., 62R , ... extending high voltage cable 63 are partially through the shield cover 67 covered.
Incidentally, if such an engine is installed in an airplane as described above, as in 6 is shown, is the engine body 12 in a at a front portion of a machine body 71 attached hood, such that the axial line of the crankshaft 11 the same extends in the forward-backward direction, and is resiliently mounted on the machine body. A propeller 74 with a plurality of propeller blades 73 , ... is forward of the hood 72 arranged and the crankshaft 11 is coaxial with the propeller 74 coupled.
Montagelelemente 75 . 75 , ... are provided, for example at four points of a rear portion of the crankcase 21 of the engine body 12 such that, for example, at the corners of a virtual quadrilateral quadrangle, the center of which lies on the axial line of the crankshaft, within a plane perpendicular to the axial line of the crankshaft 11 are arranged. The mounting elements 75 . 75 , ... are at front end sections of engine mounts 77 . 77 attached, with elastic mounts 76 . 76 , ... are arranged in between. Rear end sections of the engine mounts 77 . 77 are on holding elements 78 . 78 , ... attached to a front section of the machine body 71 in a corresponding relationship to the mounting elements 75 . 75 , ... are attached, with elastic mounts 79 . 79 are arranged between them.
The shielding cover 67 and the engine body 12 are electrically connected to one another at a plurality of locations, for example at two locations through interconnecting lines 81 , .... The engine body 12 and the engine mounts 77 . 77 are electrically single with each other through connecting lines 82 , ... connected via the elastic mounts 76 . 76 , ... run away. The engine mounts 77 . 77 and the machine body 71 are electrically connected to each other individually by connecting lines 83 , connected via the elasti holders 79 . 79 , ... run away. The connection lines 81 , ..., 82 . 82 , ..., 83 . 83 , ... are each made of a braided metal wire with the properties of stainless steel.
Because the shielding cover 67 , the engine body 12 , the engine mounts 77 . 77 and the machine body 71 in this way through the connecting lines 81 , ..., 82 . 82 , ..., 83 . 83 , ..., are electrically connected to each other, the propeller blades 73 , ..., the shielding cover 67 and the machine body 71 be placed in a grounded state.
The operation of the present working example will now be described. A plurality of electrical parts, ie the electromagnetic fuel injection valves 47L , ..., 47R , ..., the ignition coils 62L , ..., 62R , ... and the electronic control unit 64 are around the suction chamber 49 around above the crankcase 21 of the engine body 12 arranged. The electromagnetic fuel injection valves 47L , ..., 47R , ..., the ignition coils 62L , ..., 62R , ... and the electronic control unit 64 around the suction chamber are with the shield cover 67 covered on the engine body 12 is mounted so that it at least a part of the suction chamber 49 covers.
Because the electromagnetic fuel injection valves 47L , ..., 47R , ..., the ignition coils 62L , ..., 62R , ... and the electronic control unit 64 which are a plurality of electrical parts, with the single shielding cover 67 As a result, the electrical parts can be shielded while reducing the parts and achieving a generally compact configuration of the motor as compared to an alternative arrangement in which the electrical parts are individually shielded.
There are also the high voltage cables 63 , ... partly through the shielding cover 67 covered and at the with the shield cover 67 Covered sections may have individual shields for the high voltage cables 63 , ... are removed. Therefore, a secondary voltage drop of the high voltage cable 63 , ... are improved by removing the individual shields.
Further, the electronic control unit 64 on the outer surface of the front side wall of the suction chamber 49 attached and the suction pressure sensor 65 and the intake air temperature sensor 66 for detecting the suction pressure and the intake air temperature in the suction chamber 49 run from the electronic control unit 64 through the front side wall of the suction chamber 49 in the suction chamber 49 , Therefore, while a shield of the electronic control unit 64 allows the intake pressure sensor 65 and the intake air temperature sensor 66 directly with the electronic control unit 64 be connected, so that the work to connect lines can be saved.
7 and 8th show a second working example of the present invention and 7 is a partially cut plan view of an engine and 8th is an enlarged cross-sectional view taken along the line 8-8 of 7 ,
A shielding cover 87 is on a motor body 12 mounted such that it at least a part of the suction chamber 49 covering, in the lying before the second working example, the largest part of the suction chamber 49 covers. Electromagnetic fuel injection valves 47L , ..., 47R , ..., ignition coils 62L , ..., 62R , ..., knock sensors 88L . 88R and a pair of water temperature sensors 90 . 90 , which are electrical parts disposed around the suction chamber, are connected to the shield cover 87 covered. Further, a pair of suction pressure sensors 65 . 65 , a pair of intake air temperature sensors 66 . 66 and a pair of ambient pressure sensors 89 . 89 , which are electrical parts, at the suction chamber 49 attached in such a way that they pass through the shield cover 87 be covered.
Incidentally, the maximum gap between the shielding depends 87 and counter elements to which the shield cover 87 opposite, ie the engine body 12 and the suction chamber 49 , from the frequency of an electromagnetic object shielding wave. For example, the maximum gap at which the electromagnetic wave having a frequency between 100 MHz to 18 GHz is a shielding object is 4.17 mm. To prevent the occurrence of a gap greater than such a maximum gap just mentioned is a gasket 91 as they are in 8th is shown between the shield cover 87 and the suction chamber 49 and the shield cover 87 arranged, which are counter-element, which is opposite to the Abschirmabdeckung.
The seal 91 is made of an elastic material with a conductivity and comprises a cylindrical portion 91a and engaging sections 91b , ... which are integral to the cylindrical section 91a are formed. The cylindrical section 91a is between the shielding cover 87 and the suction chamber 49 or the engine body 12 arranged and held by this. The engaging sections 91b , ... are arrowhead shaped and formed at a plurality of locations of Au outer circumference of the cylindrical portion 91a intended. The engaging sections 91b , ... are in the shielding cover 87 provided engagement holes 92 used and engaged with these.
Also In the present working example, effects similar to those can be obtained of the first embodiment described above.
9 and 10 show a third working example of the present invention and 9 is a plan view of an engine and 10 is an enlarged cross-sectional view taken along the line 10-10.
An intake manifold 93 is above a motor body 12 arranged. The intake manifold 93 includes intake pipes 94L . 95L . 94R . 95R individually in the engine body 12 provided cylinder bores 18L , ..., 18R ... correspond, and a Sammelansaugrohr 96 , with the upstream ends of the intake pipes 94L . 95L . 94R . 95R are connected together. The intake pipes 94L . 95L . 94R . 95R are formed so that they are to the rear side above the engine body 12 bend. The Sammelansaugrohr 96 is above a rear portion of the engine body 12 arranged and connected to a suction chamber, not shown.
A shielding cover 97 is on the intake manifold 93 provided in such a way that it the engine body 12 covering from above and the intake pipes 94L . 95L . 94R . 95R connects with each other. The shielding cover 97 Can be integral with the intake pipes 94L . 95L . 94R . 95R be trained as in 10 is shown, or alternatively, to the intake pipes 94L . 95L . 94R . 95R be welded.
In addition, the connecting portions of the shield cover 97 with the intake pipes 94L . 95L . 94R . 95R set to positions that of the engine body 12 are spaced apart and with respect to a plane, the axial lines of the intake pipes 94L . 95L . 94R . 95R interspersed and the engine body 12 opposite to this, to ensure that a receiving space between the shield cover 97 and the engine body 12 is formed.
The electrical parts, such as the ignition coils 62L , ..., 62R , ... and the electromagnetic fuel injection valves 47L , ..., 47R , ..., on the engine body 12 are arranged, the suction pressure sensors 65L . 65R located on the opposite sides of the Sammelansaugrohrs 96 are arranged, and the intake air temperature sensors 66 . 66 in pairs at the branching sections of the intake pipes 94L . 95L . 94R . 95R attached are with the shield cover 97 covered.
According to the present embodiment, a plurality of electrical parts, such as the ignition coils 62L , ..., 62R , the electromagnetic fuel injection valves 47L , ..., 47R , ..., the suction pressure sensors 65L . 65R and the intake air temperature sensors 66 , ... with the at the intake manifold 93 provided shielding cover 97 covered and shielded by this. As a result, the electrical parts can be shielded while reducing the parts and achieving a generally compact configuration of the motor.
While working examples of the present invention have been described above present invention not to the working examples described above limited, but different changes in the design are possible without departing from the present invention as defined in the claims is to deviate.
For example Is it possible, the present invention to engines other than a boxer engine apply.
task It is in an engine where an engine body with a crankcase is a Includes a plurality of cylinder bores and one for all cylinder bores common suction chamber is arranged laterally of the crankcase, electrical parts to shield while allows is a reduction in the number of parts and also a reduction cost and a generally compact configuration to reach the engine.
In the invention wherein is a plurality of electrical parts 47L . 47R . 62L . 62R . 64 around a suction chamber 49 are arranged around, and the multiple electrical parts 47L . 47R . 62L . 62R . 64 are with a shield cover 67 covered on the engine body 12 is mounted so that it at least a part of the suction chamber 49 covers.
Engine in which an engine body ( 12 ) with a crankcase ( 21 ) a plurality of cylinder bores ( 18L . 18R ) and one for all cylinder bores ( 18L . 18R ) common suction chamber ( 49 ) side of the crankcase ( 21 ), wherein a plurality of electrical parts ( 47L . 47R . 62L . 62R . 64 . 88L . 88R . 89 . 90 ) around the suction chamber ( 49 ) are arranged around, and wherein the plurality of electrical parts ( 47L . 47R . 62L . 62R . 64 . 88L . 88R . 89 . 90 ) with a shielding cover ( 67 . 87 . 97 ) are covered on the engine body ( 12 ) is mounted such that it at least a part of the suction chamber ( 49 ), characterized in that the engine body ( 12 ) the cylinder bores ( 18L . 18R ), which are opposite to each other and from opposite sides between one rotatable on the crankcase ( 21 ) mounted crankshaft ( 11 ), and wherein the suction chamber ( 49 ) above the crankcase ( 21 ) is arranged.
Engine according to claim 1, characterized in that an electronic control unit ( 64 ), which is one of the electric parts, on an outer surface of a side wall of the suction chamber (FIG. 49 ) and that a sensor ( 65 . 66 ) for detecting a situation in the suction chamber ( 49 ) from the electronic control unit ( 64 ) passes through the side wall and into the suction chamber ( 49 ) is introduced.
DE200460000575 2003-01-28 2004-01-09 engine Expired - Fee Related DE602004000575T2 (en)
DE602004000575D1 DE602004000575D1 (en) 2006-05-18
DE602004000575T2 true DE602004000575T2 (en) 2006-08-24
DE200460000575 Expired - Fee Related DE602004000575T2 (en) 2003-01-28 2004-01-09 engine
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