Source: https://patents.google.com/patent/DE602004006806T2/en
Timestamp: 2020-08-09 21:39:06
Document Index: 14360224

Matched Legal Cases: ['art 9', 'art 9', 'art 9', 'arts 9', 'art 9', 'art 50', 'art 50', 'art 50', 'art 50', 'art 50', 'arts 50', 'arts 44', 'art 50', 'arts 50', 'art 50', 'art 50', 'art 50', 'art 189', 'art 199', 'art 199', 'art 199', 'art 192', 'art 192', 'art 193', 'art 193', 'art 193', 'art 192', 'art 192']

DE602004006806T2 - Crankcase of an internal combustion engine - Google Patents
Crankcase of an internal combustion engine
DE602004006806T2
DE602004006806T2 DE200460006806 DE602004006806T DE602004006806T2 DE 602004006806 T2 DE602004006806 T2 DE 602004006806T2 DE 200460006806 DE200460006806 DE 200460006806 DE 602004006806 T DE602004006806 T DE 602004006806T DE 602004006806 T2 DE602004006806 T2 DE 602004006806T2
DE200460006806
DE602004006806T8 (en
DE602004006806D1 (en
Toru Wako-shi Gunji
Hiroyuki Wako-shi Kawakubo
2003-07-22 Priority to JP2003277865A priority Critical patent/JP4090961B2/en
2003-07-22 Priority to JP2003277865 priority
2004-06-21 Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
2007-07-19 Publication of DE602004006806D1 publication Critical patent/DE602004006806D1/en
2007-10-18 Publication of DE602004006806T2 publication Critical patent/DE602004006806T2/en
2008-02-07 Publication of DE602004006806T8 publication Critical patent/DE602004006806T8/en
239000003921 oil Substances 0.000 claims description 184
The The present invention relates to a crankcase structure having one Compensator provided engine.
at Some engines mounted in a vehicle such as a motorcycle So far, there is an engine that uses a balancer like a secondary one Compensation device is provided with one to the crankshaft provided parallel balancing shaft and is configured so that the secondary vibration of the engine by rotating at a speed twice that corresponds to the crankshaft, is effectively reduced (see JP-A-2000-310286). This equalizer is by two waves or by only a wave is configured, and the layout is under consideration the relationship between the equalizer and each part determined by the engine.
In the above mentioned Engine, the balancer is located on the front of the crankcase. But because z. B. in the case of a motorcycle with a cylinder head connected exhaust pipe is arranged such that the exhaust pipe to the front and bottom of the crankcase passes by There are many limitations for the Layout of the equalizer. Apart from that are often an oil cooler and an oil filter at the front of the crankcase arranged, and this inclusive the equalization device must reasonable be moved.
The JP 2002-201923 shows a motorcycle according to the preamble of claim 1. There are the oil filter and the oil cooler in the center of the motorcycle arranged.
Therefore It is an object of the invention to provide a motorcycle of the generic type specify that allows a concentrated arrangement of the oil filter and the oil cooler, while Achieved the weight balance in the width direction of the motorcycle becomes.
When Means of solution the problem mentioned above sees the invention according to claim 1 is a motorcycle comprising: an engine crankcase structure, in a crankcase vertically in an upper case and a lower housing is divided, each journal bearing in the upper housing and in the lower case is formed such that the axis of rotation of a crankshaft parallel to a width direction of the motorcycle body at a parting surface of the crankcase is arranged and the crankshaft is mounted such that the Crankshaft can be rotated, wherein: an oil filter directly to the lower casing is appropriate; and an oil cooler and a balance shaft are disposed in front of the lower housing, wherein the balance shaft on one side of the middle in the width direction of the motorcycle is arranged, characterized in that the oil filter arranged on the other side of the center in the direction of the width of the motorcycle body is and the oil cooler partially is offset to this other side.
According to the above mentioned Configuration are the oil filter, the oil cooler and the balancing device is arranged together in the lower housing of the crankcase, whereby the center of gravity of the engine can be lowered, the engine is downsized can be and the heavy masses can be concentrated. apart of these are the oil filter and the oil cooler separately arranged, and the degree of freedom in the layout is improved, compared to a case where the oil cooler and the oil filter arranged in series.
It will be a good weight balance of the motorcycle in the width direction reached. The oil filter and the oil cooler are both arranged on one side of the motor in a compact arrangement, while the oil routes shortened become.
Incidentally, in the invention according to claim 2 z. For example, the configuration of an oil passage and others is simplified by having the oil cooler and balancer on the back of an exhaust pipe (eg, an exhaust pipe 44 in the embodiment), which passes through the front of the crankcase, as compared to a case where a water-cooled oil cooler z. B. is arranged in front of an exhaust pipe and connected via an oil hose and other with a crankcase, and in the case of the water-cooled oil cooler, the configuration of a cooling water passage is simplified. Incidentally, it is suitable for the drive of the balancing device and the concentrated arrangement of each part that the balancing device is arranged in front of the lower housing without being separated from the crankcase.
Further, in the invention according to claim 3, since the compensation device is provided in front of a fixing bolt (eg, a fixing bolt 155 in the embodiment) for fixing each bearing holder to the side of the upper casing and to the side of the lower casing, the balancing device can be disposed near a separating surface of the crankcase, thereby avoiding the periphery of the bearing holder of the lower casing, ie a portion near the top of the lower housing, and the engine oil consumption of the equalizer is minimized.
In the invention according to claim 4, since an oil filter is attached directly to the side of the lower case, the oil filter in the width direction of the body are removed from the one side of the engine, and even if an exhaust pipe of the engine is arranged in front of the crankcase, the exhaust pipe does not hinder the removal of the oil filter.
The maneuverability a vehicle on which the engine is mounted, and the degree of freedom Layout of the body can be improved by lowering the center of gravity of the engine, the Motor is downsized and heavy masses are concentrated. Otherwise, the Manufacturing Man Hours and the Costs by Simplification the configuration of the parts can be reduced. Further, the friction loss becomes through the consumption of engine oil reduced by the balancing device, so that the output power the engine can be improved and the fuel consumption is reduced can be. If the oil filter this is not hindered by the exhaust pipe, and the maintenance features can be improved.
following With reference to the drawings, an embodiment of the invention will be described.
1 Fig. 12 is a side view when a motorcycle - according to an embodiment of the invention - is viewed from the left side of the body;
2 is a front view showing the motorcycle;
3 is a side view showing the circumference of an in 1 shown motor shows;
4 is a sectional view when viewed along the line AA in 3 ;
5 Fig. 12 is a side view when the circumference of the motor of the motorcycle is viewed from the right side of the body;
6 Fig. 13 is an explanatory drawing for explaining a lubrication system of engine oil;
7 is a bottom view showing a lower housing of the engine;
8th is an enlarged view showing a main part of the in 4 shown motor shows; and
9 Fig. 12 is a front explanatory drawing when the lower case is viewed from the direction orthogonal to the front wall thereof.
As in 1 shown is a front fork 3 that is a front wheel 2 a motorcycle 1 carries on a head pipe 6 at the front end of a body frame 5 is provided over a steering shaft 4 stored so that the front fork can be steered, and a rear fork 8th a rear wheel 7 carries is through a pivoting part 9 attached to an intermediate part of the body frame 5 and the body of the engine 15 is provided so stored that the rear fork can be moved vertically. The upper end of a rear damper 10 is near the pivoting part of the rear fork 8th attached, and the lower end of the rear damper 10 is at a lower part of the pivoting part 9 and a lower part of the body of the engine 15 via a handlebar mechanism 11 appropriate.
A main frame 12 of the body frame 5 extends from the top of the head tube 6 on the right side and the left side downwards to the rear, with the rear end curved downwards and to the pivoting part 9 enough. A seat frame 13 of the body frame 5 is with the stern of the main frame 12 connected. A fuel tank 14 is at the top of the main frame 12 arranged, and the body 15 The water-cooled in-line four-cylinder engine (also called cross-compound four-cylinder engine) is under the main frame 12 arranged.
A seat for a driver 17 and a pillion seat for a rear passenger 18 are on every seat frame 13 at the rear of the fuel tank 14 appropriate. Right and left footrests for the driver 19 are on the respective back right and left pivoting parts 9 mounted over a respective footrest holder, and a footrest for the rear passenger 20 is at the bottom right and left seat frame 13 mounted over a respective Fußrastenhalter.
For explanation also in relation to 2 are a pair of right and left handlebars 21 . 22 at the top of the front fork 3 appropriate. A clutch lever 23 is in front of the left handlebar 21 arranged, and a brake lever 24 is in front of the right pole 22 arranged.
A caliper 28 is at the lower end of the front fork 3 attached to the caliper 28 corresponding brake rotor 29 is at the front wheel 2 attached, forming a front brake device 30 , A rear brake device having a similar configuration to the front brake device 30 is on the right side of the rear wheel 7 intended.
A rear sprocket 32 is on the left side of the rear wheel 3 attached, a drive chain 34 is around the rear sprocket 32 and a drive pinion 33 located at the rear left side of the body of the engine 15 is placed around, and the driving force of the engine is on the rear wheel 7 above wear.
The front of the body of the motorcycle 1 is with a front panel 25 covered, and the perimeter of the seat frame 13 is with a rear panel 26 covered. A folding side stand 27 is in a lower part on the left side of the body frame 5 arranged, and the motorcycle 1 can by means of the side stand 27 be supported in a state in which the motorcycle is standing, while the body is inclined to the left side.
The body of a cylinder 40 a body of the engine 15 is like a crankcase 41 arranged in a state in which the body of a cylinder is inclined forward instead. A throttle body corresponding to each cylinder 42 is with the back of the body of the cylinder 40 connected, and each throttle body 42 is with an air filter housing 43 connected between the main frame 12 and the fuel tank 14 is arranged. An exhaust pipe corresponding to each cylinder 44 is with the front of the cylinder 40 connected. The exhaust pipe 44 is, after moving from the front wall 45 of the body of the cylinder 40 extends forward, curved downwards and extends to the back of the body of the engine 15 while it is on the front and the bottom of the crankcase 41 over runs.
More specifically, the exhaust pipe extends 44 from the front wall 45 of the body of the cylinder 40 forward, then soon curved down, continues to extend backwards, after it is down on the body of the cylinder 40 and at the front of the crankcase 41 Runs over, and is under the crankcase 41 arranged. Assuming four exhaust pipes 44 , from the left side in turn 44a . 44b . 44c . 44d are, which extend under the crankcase 41 arranged exhaust pipes 44a . 44b to the rear and are to a secondary exhaust pipe 47a united together, under the environment of an oil pan 46 coming from a lower part of the crankcase 41 is arched down on the left side. Similarly, the exhaust pipes extend 44c . 44d to the rear and are to a secondary exhaust pipe 46b united, bypassing the oil sump 46 on the right side.
Every vertical exhaust pipe 47a . 47b is at the back of the oil pan 46 to a common manifold 48 united, with the manifold 48 at the back of the pivoting part 9 is arranged upwards and with one from the seat frame 13 attached muffler 49 connected is. A curved part 50a at the side of the end of the exhaust pipe 44 that with the body of the cylinder 40 is connected, and a downwardly extending part 50 extending from the curved part 50a extends downwards, are configured separately, and the curved part 50a and the downwardly extending part 50 are connected and united by laser welding and others.
Assuming that the parts extend downwards, each exhaust pipe 44a . 44b . 44c . 44d correspond, 50a . 50b . 50c . 50d are, are the downwardly extending parts 50a . 50d the exhaust parts 44a . 44d bent like a crank, so that the lower part is disposed within the upper part in the width direction of the body. The exhaust pipe 40a is arranged so that the exhaust pipe in contact with the inner exhaust pipe 44b below the crankcase 41 comes, and extends to the rear, being similar to the exhaust pipe 44d arranged so that the exhaust pipe with the inner exhaust pipe 44c below the crankcase comes in contact and extends to the rear, and there the outer exhaust pipes 44a . 44d in the width direction of the body over the inside exhaust pipes 44b . 44c lie, the angle of inclination of the body and space for the feet of the driver is ensured.
A cooler 51 is in front of the exhaust pipe 44 arranged in a state in which the radiator, like the body of the cylinder 40 , instead, is tilted forward. The cooler 51 has a rounded design, the front of which is concavely curved, and that of above the body of the cylinder 40 to the downstream side of the crankcase 41 is provided vertically. A pair of right and left cooling fans 52 are at the top back of the radiator 51 appropriate. To ensure the angle of inclination of the body and the space for the driver's feet is the radiator 51 tapers towards the bottom in the width direction of the body.
As in 3 shown is the body of the engine 15 provided with a cylinder block 53 , which is a major component of the cylinder 40 is, a cylinder head 44 and the crankcase 41 , The cylinder head 44 is in the body of a head 55 and a head cover 56 divided, and the crankcase 41 is in an upper case 57 and a lower housing 58 divided. The upper case 57 and the cylinder block 53 are integrated. The oil pan 46 is at the lower part of the lower case 58 appropriate. The cylinder head 54 , the cylinder block 53 , the upper case 57 and the lower case 58 are cast from aluminum alloy.
For explanation also in relation to 4 is a crankshaft 60 whose axis C is parallel to the width direction of the body, in the crankcase 41 arranged. A gearbox 61 extends to the back of the crankcase 41 , and a gearbox 62 and a clutch mechanism 63 are in the gearbox 61 arranged. A dividing surface S, at the top of the housing 57 and the lower case 58 of the crankcase 41 are divided; is inclined so that the surface is substantially orthogonal to the body of the cylinder 40 is and is arranged at the rear at a higher position, and the axis C of the crankshaft 60 is arranged on the separating surface S.
In the cylinder block 53 are four cylinders 64 arranged in the width direction of the body, and in each cylinder 64 is a piston 65 used so that the piston can slide. A connecting rod 67 is with every piston 65 via a piston pin 66 rotatably connected, and a large end of the connecting rod 67 is with a crankpin 68 the crankshaft 60 rotatably connected. Each crankpin 68 is from a pair of crank arms 69 attached, and a counterweight 69 is with a part at the back of each crank arm 69 to the crank pin 68 integrated.
Five cones 70 located on the axis C on the sides of both ends of the crankshaft 60 and between each crank arm 69 are provided by journal bearings 61 stored at the upper housing 57 and the lower case 58 are provided so that the pins can be rotated, and the reciprocating motion of the pin 65 is converted into a rotary motion, with the axis C in the middle. In this case, every pin is 70 in the order from the left side, 70a . 70b . 70c . 70d . 70e ,
Each journal bearing 71 stands from the upper case 57 and the lower case 58 to the interface S of the crankcase 41 before, and is flattened in the direction of the axis C. A semi-circular cylindrical surface facing the pin 70 fits, is at every journal bearing 71 trained, and the front 71F the cylindrical surface and the back 71R are located at the separation surface S face each other when the upper housing 57 and the lower case 58 are built together. In this case, that's every pin 70a . 70b . 70c . 70e corresponding journal bearing 71a . 71b . 71c . 71d . 71e ,
As in 7 shown is a crankcase fixing bolt 155a for holding the upper housing together 57 and the lower case 58 in the crankcase 41 arranged appropriately. From this crankcase fixing bolt 155A there is a fixing bolt 155 for securing each journal bearing 71 on the side of the upper case 57 and on the side of the lower case 58 which is arranged so that the fastening bolt the front 71F of the cylindrical part and the back 71R each journal bearing 71 interspersed. "FR" in 7 denotes the front of the body.
An insertion hole for inserting a lower part of the fastening bolt 155 is formed in a direction in which the insertion hole is substantially orthogonal to the separation surface S, in the front side 71F the cylindrical surface and the back 71R of the lower case 58 , Meanwhile, a threaded hole that is the fixing bolt 155 corresponding to each insertion hole of the lower case 58 inserted from the bottom, in the front 71F the cylindrical surface and the back 71R of the upper case 57 trained (see 3 ). In a state where the upper case 57 and the lower case 58 are assembled, the pin is 70 the crankshaft 60 at each journal bearing 71 mounted so that the pin can be rotated. Every bolt 155A including the fastening bolt 155 , is made of steel, whose Young's modulus is higher than that of aluminum alloy, which is the material of the crankcase 41 and other parts.
The lower case 58 is with a lower housing sub-wall 58a provided at a position corresponding to a predetermined depth at the bottom of the separating surface. The lower case 58 is also with a lower opening 58b provided, which are located at the separating surface S and along the circumference of the oil pan 46 on the lower housing lower wall 58a opens. The circuit of the engine oil in the oil sump 46 and in the body of the engine 15 gets through the lower opening 58b allows, and fixing the fastening bolt 155 on the journal bearing 71 is possible.
More precisely, every fixing bolt 155 for securing the journal bearings 71a . 71e for supporting both end sides of the crankshaft 60 is inserted directly from the insertion hole to the underside of the lower case lower wall 58a is open, each mounting bolt for attaching three journal bearings 71b . 71c . 71d which are disposed within these journal bearings is inserted from the insertion hole, that to the lower opening 58b is open, and each mounting bolt is on the upper case 57 attached. In this case, a lower part of the journal bearing 71 of the lower case 58 and the head of the fastening bolt 155 through the depth of the lower case 58 arranged from the separating surface S at the bottom.
An oil groove 72 is at the approximate center in the direction of the axis C on the cylindrical surface of each journal bearing 71 of the upper case 57 and the lower case 58 trained (in 4 are only the oil grooves on the side of the lower housing 58 shown). Meanwhile, a major oil distributor 73 extending in the direction of the width of the body between the neighborhood of both ends of the crankshaft 60 extends, at the bottom of the crankshaft 60 in the lower case 58 educated. The main oil distributor 73 and the oil groove 72 each journal bearing 71 are over an oil way 74 and engine oil is from the main oil distributor 73 every journal bearing 71 over the oil route 74 and the oil groove 72 fed.
An oil hole 75 that's one of the oil groove 72 of the journal bearing 71 opposite part penetrated in the diameter direction, is on the pin 70 the crankshaft 60 educated. Similar is an oil hole 76 that penetrates the approximate center in the axial direction of the crankpin in the diameter direction, on the crankpin 68 educated. Every oil hole 75 . 76 is over a connection oil hole 77 that is diagonal for the axis C from the side of the crank arm 69 is made, in conjunction, and part of the oil groove 72 supplied engine oil is the peripheral surface of the crank pin 68 over the oil hole 75 , the connection oil hole 77 and the oil hole 76 fed. A steel ball is in an opening of the connection oil hole 77 attached to the crank arm 69 is formed, pressed to close the opening. As in the 3 and 4 is a single-wave secondary compensation device 85 in one part, something on the left side of the middle in the width direction of the body in front of the crankcase 41 arranged. "X" in 4 shows a center line in the direction of the width of the body. The secondary compensation device 85 is rotated at a speed twice that of the crankshaft 57 corresponds to reduce the secondary vibration of the motor, has an axis parallel to the axis C D and is in a housing 86 absorbed by bulging a portion of the front wall 96 of the lower case 58 is formed forward. A balancer drive gear 87 for rotating the secondary compensation device 85 is on the circumference of the left crank arm 69 provided, the second crank pin 68 from the left side, and thus is a counterweight 69a integrated.
The front wall 96 of the lower case 58 is provided so that the front wall is substantially orthogonal to the separation surface S. The top of the case 86 is in contact with the separating surface S. That is, the secondary compensation device 85 is located near the parting surface S, at the top of the lower housing 58 is arranged. The reason for this is that the axis D of the secondary compensation device 85 in front of the journal bearing 71 the lower housing and the fastening bolt 155 is arranged to work around this. Part of the upper leg of the partition 96 of the lower case 58 at the separation surface S changes forward according to the shape of the housing 86 , and an upper opening through the change of the front wall 96 is through one in the upper housing 57 trained lid 86a locked.
A water pump 88 is on the left side of the lower case 58 arranged. The water pump 88 is coaxial with an oil pump described later 89 arranged (see 5 ), in the direction of the width of the body, and will be in accordance with the rotation of the crankshaft 60 together with the oil pump 69 operated. A radiator hose on the outflow side 90 with a tank on the outflow side of the radiator 71 communicates, and a cooling water hose 92 that with the water jacket of the cylinder head 54 and the cylinder block 53 communicate with the water pump 88 connected (see 1 ). A thermostat 93 is with the back of the cylinder head 54 connected, and a bypass hose 94 is between the thermostat 93 and the water pump 88 arranged. A radiator hose at the influence side 95 that with a tank on the influence side of the radiator 51 communicates with an outlet of the thermostat 93 connected for cooling water.
If the water pump 88 works, cooling water is coming from the radiator 51 passed through the radiator hose on the outflow side, in the body of the cylinder 40 over the cooling water hose 92 absorbed, cools each part and is in the body of the cylinder 40 on the similar path repeatedly led in the circle, after the cooling water over the thermostat 93 and the radiator hose at the influence side 95 to the radiator 91 has returned. When doing this, the temperature of the cooling water, which is the thermostat 93 flows through, has a fixed temperature or is cooler, the cooling water has over the bypass hose 94 from the thermostat 93 to the water pump 88 sent and led in a circle, without the radiator 51 to flow through. When the temperature of the cooling water, the thermostat 93 flows through, the fixed temperature exceeds, the radiator fan 52 operated to forcibly cool the cooling water.
A water cooled oil cooler 97 is at the front of the front wall 96 of the lower case 58 appropriate. The oil cooler 97 is next to the lower right side of the housing 86 the secondary compensation device 85 arranged, that is, something on the right side of the middle in the width direction of the body, in the front of the crankcase 41 , The oil cooler 97 the cooling water splits with the body of the engine 15 in which the cooling water is taken up by a branch pipe and a hose (both not shown), which are in the way of the cooling water hose 92 are provided, and is via a branch pipe and a hose (both not shown), by way of the radiator hose on the outflow side 90 are provided to the water pump 88 recycled.
As in 5 shown is a respective cam pinion 101 . 102 at the right end of each cam wave 83 . 84 attached. A timing chain 104 is about these cam pinions 101 . 102 and a chain sprocket 103 put around, the right end of the crankshaft 60 is attached. Every camshaft 83 . 84 will be according to the rotation of the crankshaft 60 turned, and every intake valve 81 and each exhaust valve 82 is opened or closed. The game of the timing chain 104 gets through a cam chain tensioner 105 prevented in single construction.
Also for explanation in relation to 4 is a starter motor driven gear 106 with the outside in the widthwise direction of the body of the chain pinion 103 at the right end of the crankshaft 60 coupled on the axis C via a one-way clutch, not shown. The starter motor 107 is in an upper part of the gearbox 61 arranged, and the crankshaft 60 is through the starter motor 107 only rotated in one direction, in which the engine via a starter gear train engaging with its drive shaft 108 is started.
A primary drive gear 109 is on the circumference of the crank arm 69 provided on the left side, the crank pin 68 at the end of the right side and the counterweight 96a Integrated with the crank arm wears and stands with a primary driven gear 10 the clutch mechanism 63 engaged, on the right side of the gearbox 61 is arranged. The coupling mechanism 63 is a so-called multi-plate clutch, provided with a primary output gear 10 , a clutch outer element 111 that rotates integrally therewith, a coupling agent element 113 that in the clutch outer element 111 is absorbed and integral with a main shaft 112 of the transmission 62 rotates, and a plurality of friction plates 111 ..., 113a ... on the part of the clutch outer element 110 and on the part of the coupling agent element 113 ,
A printing plate 115 by a plurality of clutch springs 114 is pressurized is on the coupling agent element 113 attached, both friction plates 111 ..., 113a ... through the pressure plate 115 pressed against each other, and the clutch mechanism 63 is placed in a state in which it can transmit power. A clutch release 116 , which is on the left side of the gearbox 61 is arranged, by the operation of the clutch lever 23 operated, both friction plates 111 ..., 113a ... by the movement of the pressure plate 115 over one into the main shaft 112 inserted ram 117 against the pressure of the clutch spring 114 be disconnected, and the power transmission through the clutch mechanism 64 is interrupted.
The gear 62 is provided with the main shaft 12 and a countershaft 118 , which are each arranged parallel to the axis C and on the transmission housing 61 are stored so that the waves can be rotated, as well as with a gear train 119 , each on both waves 112 . 118 is provided and which are engaged via keyways with each other. The main shaft 112 is in a coaxial position with the clutch mechanism 63 arranged, and the coupling agent element 113 the clutch mechanism 63 is on the right end of the main shaft 112 set and fixed there. The main shaft 112 and the countershaft 118 Both are hollow, with the engine oil flowing through the hollow part and each sliding shaft, the gear train 119 and the clutch mechanism 63 fed through oil holes.
The driving force of the engine becomes the main shaft 112 of the transmission 62 over the primary drive gear 109 , the primary output gear 110 and the clutch mechanism 63 from the crankshaft 60 is transferred to the countershaft 118 at a predetermined reduction ratio via the gear train 119 transmitted and is further from that at the left end of the countershaft 118 attached drive pinion 33 over the drive chain 34 on the rear wheel 7 transfer.
The reduction ratio of the gearbox 62 is through a change mechanism 120 switched and controlled in the back of the gearbox 61 is arranged. The change mechanism 120 is with a latch 122 provided, which with a switching shaft 121 , a shift drum 123 and a plurality of (only one is shown) shift forks 125 which is connected to a shift fork shaft 124 are mounted and suitable in the shift drum 123 and the transmission gear train 119 of the transmission 62 are used. A not shown shift pedal is connected to the end of the shift shaft 121 coupled, that of the gearbox 61 protrudes, the shift shaft 121 is rotated by a fixed angle by pressing the shift pedal, the shift drum 123 over the latch 122 is rotated, the engagement of each shift fork 125 with the transmission gear train 119 is changed and the reduction gear ratio is changed.
An alternator (not shown) provided with a rotor integral with the crankshaft 16 turns, and a stator attached to a generator cover 126 is located at the left end of the crankshaft 60 and an ignition timing detecting mechanism (not shown) provided with a pulser rotor that rotates integrally with the crankshaft and a pulse generator attached to a point lid 127 is attached, is at the right end of the crankshaft 60 intended.
The oil pump 89 for forced engine oil production to suitable points of the engine 15 is in the lower part of the crankcase 41 arranged. The oil pump 89 is with an oil pump drive pinion 128 coupled with the main shaft 112 engages and together with the primary drive gear 110 over a chain 129 is rotated, and the operation starts with the rotation of the crankshaft 60 , Engine oil L is in the oil sump 46 taken at the lower part of the lower case 58 is attached, and an oil strainer 130 is immersed in the absorbed engine oil L. The oil level of engine oil L is near the top of the oil pan 46 ,
For explanation also in relation to 6 , is the upper end of the oil strainer with an inlet 131 the oil pump 89 connected, and an outlet 132 the oil pump 89 is with one in the lower case 58 formed first oil passage 133 connected. The first oil channel 133 is bent forward after moving from the outlet of the oil pump 89 extends upwards, is lowered a little forward and extends forward. A holder 135 for mounting the oil filter in cartridge type 134 so that the oil filter can be removed in the width direction of the body is on the right side of the front wall 96 of the lower case 58 provided, wherein an oil flow path 136 , is provided, which extends to the inside in the width direction of the body of the holder 135 forth, and the front end of the first oil passage 133 is with the left end of the oil inflow path 136 connected. By the way, is an oil spillway 137 on the front wall 96 of the lower case 58 essentially parallel to the oil inflow path in front of the oil inflow path 136 provided, and an inlet 138 of the oil cooler 137 is at the left end of the oil outflow path 137 connected.
An outlet 139 of the oil cooler 97 is with a second oil channel 140 connected in the lower housing 58 is formed, increases, substantially parallel to the first oil passage 33 , a little backwards and extends to the rear. The second oil channel 140 communicates with an oil distributor (not shown) which is the main oil distributor 73 in the body of the engine 15 and an oil nozzle (not shown), that of the oil screen 130 by the operation of the oil pump 89 sucked engine oil forcibly in the first oil passage 133 is promoted and the body of the engine 15 from the second oil passage 140 is supplied after the engine oil in the oil filter 134 is filtered, and in the oil cooler 97 is cooled. In the main oil distributor 73 The absorbed engine oil is each journal bearing 71 from every oilway 74 and every oil groove 72 fed. In 6 An arrow in each path indicates the direction in which the engine oil flows, and the arrow FR indicates the front of the engine.
The engine oil, the body of the engine 15 is fed, returns by natural dripping to the oil pan 46 back, is recorded there and is repeated in the body of the engine 15 circulating through the above-mentioned path. As for the circulation of the engine oil, when the engine is running at a high speed, the oil pressure of the forced-feed engine oil is increased, and when the oil pressure reaches a predetermined value, an oil-drain valve becomes 142 operated with the bottom of a part in which the first oil channel 133 and the oil inflow path 136 Cross each other over a drainage path 141 is connected, with part of the engine oil to the oil pan 46 returns and the oil pressure in the path is set.
The oil filter 134 is right from the right end of the engine 15 on the holder 135 appropriate. The holder 135 is formed in a state in which the holder the Ölausflussweg 137 has substantially in the middle, and the right end surface (the side of the lower case 58 ) is made such that the right end surface is substantially orthogonal to the width direction of the body to form a surface 143 on which the oil filter 134 is appropriate. The outflow opening 144 of the oil spillway 137 is in the middle of the mounting surface 143 provided, an annular oil groove 145 is in the scope of the outflow opening 144 provided, and an influence opening 146 of the oil inflow route 136 is at the bottom of the oil groove 145 intended.
The oil filter 134 is an existing cartridge-type filter that is a filter element 148 in a cylindrical housing 147 receives, which has a bottom and an opening of the housing 147 with a disc-shaped seat plate 149 closes. The filter element 148 is formed so that it is cylindrical as a whole, becomes a wavy structure by buckling of filter paper, and in the oil filter 134 the filtering takes place, in which the engine oil from the outside of the filter element 148 flows to the inside. A sealing ring 150 is inside the opening of the housing 147 attached to allow a seal in a state in which the Öfilter 134 on the holder 135 is appropriate.
A round hole 151 that matches the space inside the filter element 148 communicates is in the middle of the seat plate 149 formed and an internal thread is on the inner circumference of the round hole 151 educated. A nozzle 152 in the width direction of the body from the mounting surface 143 is projecting, is at the outflow opening 144 of the owner 135 provided, and an external thread, the internal thread of the round hole 151 corresponds to, is at the periphery of the nozzle 152 educated. the oil filter 134 is on the holder 135 attached in which the round hole 152 on the nozzle 152 is placed and the oil filter 134 , in which he is turned himself, is pressed on.
If the oil filter 134 on the holder 135 is attached, the space are inside the filter element 148 and the oil outflow path 137 over the round hole 151 and the nozzle 152 in connection. Several influence holes 153 with the space outside the filter element 148 are related to the round hole 151 the seat plate 149 are formed around, are opposite the oil groove 145 the mounting surface 143 arranged in a state in which the oil filter 134 attached, and the oil flow path 136 and the space outside the filter element 148 stand over the oil groove 145 and the influence holes 153 in connection.
The engine oil coming from the first oil channel 133 to the oil inflow route 136 is sent, flows into the oil filter 134 over the oil groove 145 and the influence holes 153 , flows from the space outside the filter element 148 to the room within the same and is filtered. The filtered engine oil becomes the oil discharge path 137 over the round hole 151 and the nozzle 152 sent and becomes an oil cooler 97 directed.
The oil cooler 97 looks cylindrical and has an end face on the front wall 96 of the lower case 58 attached. That to the oil cooler 97 skillful engine oil gets from the inlet 137 in the oil cooler 97 and is cooled as it goes through a predetermined path. The engine oil coming from the outlet 139 to the second oil channel 140 is directed, every part of the body of the engine 15 supplied from the oil distributor and the oil nozzle. The engine oil, the body of the engine 15 is fed, lubricates the crankshaft 60 , The gear 62 , the clutch mechanism 63 , the piston 65 and every camshaft 83 . 84 , dampens the body of the engine and also affects the air-tightness and cooling of the body of the engine 15 ,
The oil cooler 97 is located near the center (slightly on the right side) in the width direction of the body, and the second oil passage 140 is also approximately in the middle in the width direction of the body of the crankcase 41 arranged. The crankcase 41 and a center position in the body width direction of the crankshaft 60 and the main oil distributor 73 are adjacent, and the second oil channel 140 that is different from the oil cooler 97 extends to the rear, is connected 154 in the approximate center in the width direction of the body of the main oil distributor 73 connected. Therefore, the oil pressure of the engine oil is the main oil distributor 73 is passed, substantially uniformly, and the engine oil is supplied uniformly in the width direction of the body.
The downwardly extending part 50 each exhaust pipe 44 is bent slightly convex forward near the vertical center, as in the 2 and 3 shown in terms of the relationship in the layout with the oil cooler 97 , which is on the side of the crankcase 41 is provided, the secondary equalization device 85 and the oil filter 134 , The downwardly extending parts 50a . 50d of the exhaust pipe 44a at the end of the left side and the exhaust pipe 44d at the end of the right side, they are bowed in a condition in which the lower part protrudes further forward than the upper part. Therefore, these are the downwardly extending part 50d of the exhaust pipe 44 and the oil filter 134 arranged so that they do not overlap when viewed from the front of the body of the engine 50 looked at (see 2 ). That is, the downwardly extending part 50d of the exhaust pipe 44d at the end of the right side is disposed inside the oil filter in the width direction of the body, so that the downwardly extending part with the oil filter 134 not overlapped longitudinally.
Therefore, a tool for removing the oil filter 134 be used without interference with the exhaust pipe 44d , Similarly, the oil filter 134 be easily held by hand. As is the downwardly extending part 50d of the exhaust pipe 44d to the rear under the crankcase 41 extends while it is the oil filter 134 bypasses, there is no exhaust pipe under the oil filter 134 arranged, and it is prevented that the exhaust pipe is contaminated with engine oil, which drips when the oil filter 134 is removed.
As described above, the crankcase 41 in the upper case 57 that to the body of the cylinder 40 enough, and the lower case 58 divided vertically, and the axis C, which is the axis of rotation of the crankshaft 60 is, is on the interface S of the crankcase 41 arranged. The separating surface S of the crankcase 41 is substantially orthogonal to the axis T of each cylinder 64 which is arranged in a forwardly inclined posture, and a pair of journal bearings 71 is on the upper case 57 and the lower case 58 provided (see 3 ).
As in 8th shown is the secondary balancer 85 provided with a balance shaft 186 between right and left side walls 86b . 86c of the housing 86 , a pair of needle bearings 187 . 188 attached to the circumference of the balancer shaft 186 between the two side walls 86b . 86c are attached, a balance weight 191 which is a cylindrical part 189 is that about each needle bearing 187 . 188 at the balance shaft 186 is stored, and a cylindrical weight 190 , which is formed at the right end, has pressure discs 192 . 193 at the right end and at the left end of the balance weight 191 are arranged, and a balancer output gear 195 at the left end of the balance weight 191 over a rubber cushion 194 is appropriate. The balancer output gear 195 stands with the balancer drive gear 87 the crankshaft 60 in conjunction, and the secondary equalizer 85 gets along with the crankshaft 60 turned.
The balance shaft 186 is on an axis D through a right bearing 86d that through one in the right side wall 86b of the housing 86 formed through hole is configured, and a left bearing 86e that is configured by a blind-ending hole that is in the left sidewall 86e of the housing 86 is formed, stored, and the outer end 196 that from the left camp 86e to the outside of the housing 86 the balance shaft 186 protrudes, is about a fastener 197 attached. The fastener 197 attaches the output shaft 186 on the left side wall 86c of the housing 86 in a state in which the rotation and the axial movement of the balance shaft 186 are regulated, with one end of the fastener 197 at the outer end 196 the balance shaft 186 fastened by a bolt and other, and the other end to a left hub 198 (please refer 9 ) of the housing 86 is appropriate.
The balance shaft 186 is between the right and left bearings 86d . 86e eccentric. The phase of an eccentric part 199 can by turning the outer end 196 to be changed with one tool and another. The balance weight 191 is determined by the circumference of the eccentric part 199 over a pair of needle bearings 187 . 188 carried so that the balance weight can be rotated and the balancer drive gear 195 along with the balance weight 191 can be moved in parallel by the phase of the eccentric part 199 is changed.
A game between the balancer output gear 195 and the balancer drive gear 87 Can be adjusted by fixing the balance shaft 186 through the fastener 197 releases and the balancer driven gear 195 moved in parallel, by changing the phase of the Exzenterteils 199 As described above, and thereby noise and vibration can be minimized by the engagement of the respective gears. The weight 190 the balance weight 191 and the Ausgleicherabtriebszahnrads 195 are separated in the axial direction to interfere with the big end of the connecting rod 56 to avoid.
The pressure discs 192 . 193 are between both ends of the balance weight 191 and both side walls 86b . 86c of the housing 86 arranged. The pressure disc 192 , which is arranged on the right side, is provided with an annular cylindrical holding part 192b provided, which is to the side of the balance weight 191 on the circumference of the body 192a extends, and the pressure washer 192 itself is for the balance weight 191 positioned by the thrust on the inner surface of the sidewall 86b the right surface of the body 192a is supported, the thrust between the right end of the balance weight 191 and the needle bearing 187 on the left surface through the body 192a is supported, and further in which the inner surface of the cylindrical holding part 192b on the peripheral surface of the right end of the balance weight 161 is put on.
The pressure disc 193 the one on the left side of the balance weight 191 is arranged, is with an annular cylindrical holding part 193b provided, which is to the side of the balance weight 191 on the inner surface of the body 193a extends, and the pressure washer 193 itself is for the balance weight 191 positioned by supporting the thrust force with the inner surface of the sidewall 86c on the left surface of the body 193a , Holding the thrust between the left end of the balance weight 191 and the left end of the balancer output gear 195 on the right surface of the body 193a , Supporting the thrust force with the needle roller bearing 88 through the right end of the cylindrical holding part 193b , And further by placing the peripheral part of the cylindrical holding part 193b on the inner surface of the inner end of the balance weight 191 ,
Because the cylindrical holding part 192b the right pressure disc 192 on the circumference of the body 192a is formed, the needle bearing 187 on the side of the body 192a (On the right side) are arranged, without interference with the cylindrical holding part 192b , As a result, an intermediate position F becomes in the axial direction of the needle roller bearing 187 in the vicinity of an intermediate position E in an axial direction, which is a center of gravity of the weight 190 interspersed on the right side of the balance weight 191 is disposed, and a displacement in the axial direction between the two intermediate positions can be minimized. As a result, one on the needle bearing 187 acting staggered load reduced, and the durability can be improved.
For explanation also in relation to 4 is the case 86 the secondary equalization device 85 between the second journal bearing 71b from the left side in the direction of body width and its inner journal bearing 71c intended. Right and left side walls 86b . 86c of the housing 86 and every journal bearing 71c . 71b are designed so that respective pairs are achieved, and the rigidity of the housing 86 and the crankcase 41 is improved. This allows the lower housing 58 without special reinforcement, support a centrifugal force acting on the secondary balancer 85 acts. Because the front and the back of the journal bearing 71 through the fastening bolt 155 are integrated, the rigidity becomes to carry the secondary equalization device 85 further improves and increases the weight of the lower case 58 prevented.
Furthermore, each journal bearing 71 through the fastening bolt 155 fixed, which is made of steel with a Young's module, which is higher than that of aluminum alloy, which is the material of the crankcase 41 is, the rigidity is to connect the crankcase 41 by the fastening force of the fastening bolt 155 improved. As a result, the vibration force acts (the damping force, which is the vibration of the crankshaft 60 prevents) the secondary balancing device 85 effective, and the vibration of the engine can be minimized.
There, as in 9 shown the case 86 the secondary equalization device 85 is arranged so that it is the one upper left part of the cylindrical oil cooler 97 is adjacent, the shape of a lower part of the right side wall is different 86b of the housing 86 from the shape of the left side to a left upper part of the oil cooler 97 to get around. The shape of the upper edge at the parting surface S of the side wall 86b is inclined forwards to the left (see 4 ). In this case, the oil cooler 97 and its holder 97a near (near the lower opening 58b in 9 ) of the lower case lower wall 58a arranged, which is the bottom of the lower case 58 is. That is, the secondary equalizer 85 at the top of the lower case 58 is arranged, and the oil cooler 97 at the bottom of the lower case 58 is disposed near the center X of the width direction of the body so that a part of the same overlaps in the body width direction.
The oil filter 134 and his owner 185 will be at substantially the same height as the oil cooler 97 around its holder 97a arranged. That is, a kinking of the oil passage of the engine oil is minimized, smoothing the flow of the oil, facilitating the formation of the oil passage, and the productivity of the lower case 58 is improved. The oil filter 134 is right at the bottom of the holder 135 formed side of the lower housing 58 appropriate.
According to the above-mentioned embodiment, the oil filter 134 , the oil cooler 97 and the secondary equalizer 85 together in the lower housing 58 arranged, the center of gravity of the engine is lowered, the engine is downsized and the heavy masses can be concentrated. Therefore, the maneuverability of the vehicle to which the engine is mounted and the degree of freedom in bodylayout can be improved. Furthermore, the oil filter 134 and the oil cooler 137 are arranged separately, the degree of freedom in the layout can be improved, as compared to a case where the oil cooler 97 and the oil filter 134 arranged in series.
As the oil cooler 97 and the secondary equalizer 85 at the back of the exhaust pipe 44 are arranged at the front of the crankcase 41 passes over, the configuration of the oil passage is simplified, compared to a case in which an air-cooled oil cooler z. B. in front of the exhaust pipe 44 is arranged and with the crankcase 41 about an oil hole and other related. And if the water-cooled oil cooler is used, as in the embodiment, a cooling water channel can be simplified. Therefore, manufacturing man hours and cost can be reduced by simplifying the configuration of the components. Apart from that it is for the drive of the secondary balancing device 85 and the common arrangement of each component suitable for the secondary balancer 85 in front of the lower case 58 is arranged.
Furthermore, as the secondary balancing device 85 in front of the fastening bolt 155 for securing each journal bearing 71 on the side of the upper case 57 and on the side of the lower case 58 is arranged, the secondary balancing device 85 near the separating surface S of the crankcase 41 be arranged, the scope of the journal bearing 71 of the lower case 58 ie in the part near the top of the lower housing 58 , is bypassed, and the consumption of the engine oil by the secondary equalization device 85 is minimized. Therefore, the friction loss of the engine is reduced, the output of the engine is improved and the fuel consumption can be reduced. In particular, the secondary compensating device 85 with twice the speed of the crankshaft 60 is turned, you get a strong effect.
Because the oil filter 134 directly on the side of the lower case 58 attached, the oil filter can 134 in the width direction of the body from the lateral end of the body of the engine 15 be removed, and even if the exhaust pipe 44 in front of the crankcase 41 is arranged obstructs the exhaust pipe 44 the removal of the oil filter 134 not and the maintenance characteristics can be improved.
The invention is not limited to the embodiment, and z. B. can the oil filter 134 at one their part as the side of the lower case 58 be attached. Incidentally, the invention can also be applied to the case of a biaxial secondary balancer and primary balancer. Further, the type of the engine is not limited to the inline four-cylinder engine, and the invention can also be applied to engines of various types provided with a balancer.
Around to downsize an engine, concentrate heavy masses and to reduce the friction loss by a balancing device.
In an engine crankcase structure in which a crankcase 41 vertically divided into an upper housing and a lower housing, is each journal bearing 71 formed in the upper housing and in the lower housing such that the axis of rotation of a crankshaft 60 on a separating surface of the crankcase 41 is arranged parallel to the width direction of the body and the crankshaft 60 is mounted so that the crankshaft can be rotated, with an oil filter 134 directly on the lower case 58 attached and an oil cooler 97 and a secondary equalizer 85 in front of the lower case 58 are arranged.
Motorcycle comprising an engine crankcase structure in which a crankcase ( 41 ) vertically into an upper housing ( 57 ) and a lower housing ( 58 ), each journal bearing ( 71 ) in the upper housing ( 57 ) and in the lower housing ( 58 ) is formed such that the axis of rotation of a crankshaft ( 60 ) parallel to a width direction of the motorcycle body at a parting surface of the crankcase ( 41 ) is arranged and the crankshaft ( 60 ) is mounted such that the crankshaft ( 41 ), wherein: an oil filter ( 134 ) directly on the lower housing ( 58 ) is attached; and an oil cooler ( 97 ) and a balance shaft ( 85 ) in front of the lower housing ( 58 ) are arranged, wherein the balance shaft ( 85 ) is arranged on one side of the center (X) in the width direction of the motorcycle, characterized in that the oil filter ( 134 ) is arranged on the other side of the center (X) in the direction of the width of the motorcycle body and the oil cooler ( 97 ) is partially offset to this other side.
A motorcycle according to claim 1, wherein the oil cooler ( 97 ) and the balance shaft ( 85 ) behind an exhaust pipe ( 44 ) are arranged, which at the front of the crankcase ( 41 ) is over.
A motorcycle according to claim 1 or 2, wherein the balance shaft ( 85 ) in front of a fastening bolt ( 155 ) for securing each journal bearing ( 71 ) on the side of the upper housing ( 57 ) and on the side of the lower housing ( 58 ) is arranged.
A motorcycle according to any one of claims 1 to 3, wherein the oil filter ( 134 ) directly on the side of the lower housing ( 58 ) is attached.
A motorcycle according to claim 4, wherein a side stand ( 27 ) in a lower part of a body frame ( 5 ) of the motorcycle and the oil filter ( 134 ) on the side stand ( 27 ) opposite side is arranged.
DE200460006806 2003-07-22 2004-06-21 Crankcase of an internal combustion engine Active DE602004006806T8 (en)
JP2003277865A JP4090961B2 (en) 2003-07-22 2003-07-22 Engine crankcase structure
JP2003277865 2003-07-22
DE602004006806D1 DE602004006806D1 (en) 2007-07-19
DE602004006806T2 true DE602004006806T2 (en) 2007-10-18
DE602004006806T8 DE602004006806T8 (en) 2008-02-07
ID=33535644
DE200460006806 Active DE602004006806T8 (en) 2003-07-22 2004-06-21 Crankcase of an internal combustion engine
US (1) US7104239B2 (en)
EP (1) EP1503059B1 (en)
JP (1) JP4090961B2 (en)
DE (1) DE602004006806T8 (en)
ES (1) ES2287612T3 (en)
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2003-07-22 JP JP2003277865A patent/JP4090961B2/en active Active
2004-06-21 ES ES04014487T patent/ES2287612T3/en active Active
2004-06-21 DE DE200460006806 patent/DE602004006806T8/en active Active
2004-06-21 EP EP04014487A patent/EP1503059B1/en active Active
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US7104239B2 (en) 2006-09-12
US20050016488A1 (en) 2005-01-27
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