CN102003263A - Cooling device of a power unit - Google Patents
Cooling device of a power unit Download PDFInfo
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- CN102003263A CN102003263A CN2010102463508A CN201010246350A CN102003263A CN 102003263 A CN102003263 A CN 102003263A CN 2010102463508 A CN2010102463508 A CN 2010102463508A CN 201010246350 A CN201010246350 A CN 201010246350A CN 102003263 A CN102003263 A CN 102003263A
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- oil
- cylinder
- oil cooler
- cooling
- cooler
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Abstract
The invention provides a cooling device of a power unit, capable of preventing an oil cooler from projecting. The cooling device comprises an oil cooler (105) and the oil cooler comprises: an oil path (108) for the oil supplied to an engine (20) as the power unit; a cooler cooling mechanism (109) for cooling the oil through the oil path (108), wherein the oil cooler (105) extends upwards along the axle of the cylinder (L1) and is formed into the plate shape at the side of the cylinder (22A).
Description
Technical field
The present invention relates to the cooling unit of power unit.
Background technique
A kind of structure is disclosed in patent documentation 1, promptly on the power unit (being also referred to as motor) that is equipped on the two-wheeled motorcycle etc., configuration oil cooler cylindraceous (for example, with reference to patent documentation 1) below the cylinder of power unit.
Patent documentation 1: TOHKEMY 2003-314277 communique
But,,, cause power unit to maximize so oil cooler is outstanding and volume is big because structure in the past is at the circumferential arrangement of cylinder side wall oil cooler cylindraceous.In addition, owing to dispose oil cooler in the crankcase bottom, so the distance of food tray and oil cooler becomes near, the influence that oil cooler is subjected to the oil temperature in the food tray causes temperature to rise.
Summary of the invention
The present invention is the invention of In view of the foregoing making, and its purpose is to provide a kind of cooling unit of power unit, can suppress the outstanding of oil cooler.
In order to solve above-mentioned problem, the cooling unit of power unit of the present invention, this power unit has crankcase and cylinder, described cylinder has cylinder sleeve that can keep piston and the cylinder cooling mechanism that covers the periphery of this cylinder sleeve with being free to slide, it is characterized in that, has oil cooler, the cooler cooling mechanism that this oil cooler has the oil circuit that passes through for the oil that is fed into described power unit, the oil by this oil circuit is cooled off, this oil cooler extends on the cylinder axis direction, and forms the tabular of the side that is positioned at described cylinder.
In said structure, described cylinder can be by fastened integratedly with the clamping bolt more than three and the described crankcase that roughly uniformly-spaced dispose, described cylinder cooling mechanism forms the general plane shape that extends along the cylinder axis direction that links with straight line roughly between the described clamping bolt, and described oil cooler extends along the devices spaced apart ground, plane of described cylinder cooling mechanism.
In addition, in said structure, described power unit has cylinder in the place ahead that is bearing in the bent axle on the crankcase, has mission case at crankshaft end, has food tray below bent axle, and described oil cooler is configured in the top of described food tray.
In said structure can also be, described mission case be accommodated V belt speed changer, and described oil cooler is located at the front upper place of described mission case.
In addition, in said structure, can also have oil pump, this oil pump picks up the oil of described food tray, and oil is supplied with to the each several part that comprises crankshaft lubrication portion, and described oil cooler is configured in described oil pump and between the described crankshaft lubrication portion in its downstream.
In said structure, can also have the cylinder head lubricating oil path, this cylinder head lubricating oil path between described oil pump and the described oil cooler via throttle orifice branch, and oil supplied with to the cylinder head that is installed on the described cylinder.
In addition, in said structure, can also have the piston nozzle, this piston nozzle between described oil pump and the described oil cooler via throttle orifice branch, and oil sprayed to the piston that is free to slide in described cylinder.
In addition, in said structure, by suction and discharge, described oil cooler is integrally formed on the described mission case at the inner space of described mission case cooling air.
In addition, in said structure, can also for, described cylinder disposes frontward with respect to the bent axle level, has cap assembly in described bent axle side, described oil cooler is configured on the end difference between described cylinder and the described cap assembly.
In addition, in said structure, can also for, described oil cooler is located on the described cap assembly, has the cooling fan as described cooler cooling mechanism on the side of the opposition side of the side of cylinder side and cylinder.
The effect of invention
In the present invention, oil cooler extends on the cylinder axis direction, and forms the tabular of the side that is positioned at cylinder, therefore, can dispose oil cooler along cylinder side wall, can suppress the outstanding of oil cooler.
In addition, cylinder is by fastening integratedly with the clamping bolt more than three and the crankcase that roughly uniformly-spaced dispose, the cylinder cooling mechanism forms along link the general plane shape that the cylinder axis direction between the clamping bolt is extended with straight line roughly, oil cooler needs only along the devices spaced apart ground, plane of cylinder cooling mechanism and extends, just can be with oil cooler near cylinder ground configuration, even also can suppress its outstanding from motor for large-scale oil cooler.
In addition, power unit has cylinder in the place ahead that is supported in the bent axle on the crankcase; Has mission case at crankshaft end; Below bent axle, has food tray, as long as oil cooler is configured in the top of food tray, have cylinder in the place ahead of bent axle, crankshaft end has in the motor of food tray below having mission case, bent axle, thereby just can away from the configuration of food tray ground the cooling effectiveness of oil cooler be improved oil cooler, can realize the miniaturization of oil cooler.
In addition, mission case is accommodated V belt speed changer, as long as oil cooler is arranged on the front upper place of mission case, just can on the box part of inside, form oil cooler for dried space, and oil cooler can further improve the cooling effectiveness of oil cooler away from the configuration of food tray ground.
In addition, has oil pump, this oil pump picks up the oil of food tray, and supply with oily at interior each several part to comprising crankshaft lubrication portion, as long as oil cooler is configured in oil pump and between the crankshaft lubrication portion in its downstream, just can even be the not too good motor of thermal diffusivity of crankshaft room, also can carry out the cooling of crankshaft room well with supplying with to crankshaft lubrication portion by the oil of oil cooler cooling.
In addition, as long as have the cylinder head lubricating oil path, this cylinder head lubricating oil path between oil pump and the oil cooler via throttle orifice branch, and supply with oily to the cylinder head that is installed on the cylinder, the supply oil circuit to cylinder head of then need not to extend just can carry out the lubricated of the lubricated portion of cylinder head etc. and well based on the cooling of oil, and can prevent the oil-break of the lubricated portion of cylinder head.
In addition, as long as have the piston nozzle, this piston nozzle between oil pump and the oil cooler via throttle orifice branch, and spray oil to the piston that in cylinder, is free to slide, just can guarantee the oil pressure of piston nozzle.
In addition, in the inner space of mission case, cooling air is by suction and discharge, as long as oil cooler is integrally formed on the mission case, cooling effect based on inner cooling air just can act on the oil cooler via mission case, improves the cooling effectiveness of oil cooler.
In addition; cylinder has cap assembly with respect to the horizontal forward direction of bent axle ground configuration in the bent axle side, and oil cooler is configured on the end difference between cylinder and the cap assembly; the maximization of motor can either be avoided like this, the maximization and the protection of oil cooler can be realized again simultaneously.
In addition, oil cooler is located on the above-mentioned cap assembly, as the cooler cooling mechanism, has cooling fan in the side of the opposition side of the side of cylinder side and cylinder, can increase heat diffusion area like this and improve cooling effectiveness.
Description of drawings
Fig. 1 is the side view of the two-wheeled motorcycle of embodiments of the present invention.
Fig. 2 is the in-built figure that represents motor from the vehicle body right side.
Fig. 3 is the figure in the III-III cross section of presentation graphs 2.
Fig. 4 is the figure that represents peripheral structure and crankcase and cylinder part from the vehicle body right side together.
Fig. 5 (A) is the figure of the superstructure of expression motor, and Fig. 5 (B) is the figure of expression left and right sides cross-sectional configuration.
Fig. 6 is a side view of observing mission case from the vehicle body right side.
Fig. 7 is a side view of observing mission case from the vehicle body left side.
Fig. 8 (A) is the figure of (table side) expression oil cooler cover from the vehicle body right side, and Fig. 8 (B) is from the being seen figure in vehicle body rear, and Fig. 8 (C) is that Fig. 8 (D) is the figure in the D-D cross section of presentation graphs 8 (A) from vehicle body left side (inboard) being seen figure.
Fig. 9 is the figure of expression oil lubrication system.
Figure 10 is the figure of the lubricating structure of expression crankshaft lubrication portion.
The explanation of reference character
1 two-wheeled motorcycle
2 vehicle body frames
20 motors (power unit)
22 cylinder part
The 22A cylinder block
22F, 106A, 109 cooling fans
24 crankcases
51 bent axles
51R rotating band wheel shaft (live axle)
60 V variable v-belt drives
61 speed changer accommodation sections
61A mission case (cap assembly)
61B speed changer cover (cap assembly)
64 driven belt wheel shafts (driven shaft)
68 V band
80 starting clutches (Wet-type centrifugal formula clutch)
97 torque dampers
105 oil coolers
106 oil cooler main bodys
107 oil cooler covers
120 oil pumps
The L1 cylinder axis
Embodiment
Below, with reference to accompanying drawing an embodiment of the invention are described.
In addition, in the following description, about all around and the record of direction up and down as do not have in special record and the vehicle towards identical.In addition, arrow F represents vehicle body the place ahead among the figure, and arrow R represents that vehicle body is right-hand, and arrow U represents the vehicle body top.
Fig. 1 is the side view that expression is suitable for the two-wheeled motorcycle 1 of embodiments of the present invention.
The vehicle body frame 2 of this two-wheeled motorcycle 1 has: the head pipe 3 of body forward structure; Manage 3 main car frames 4 that rearward tiltedly have a down dip and tiltedly extend from this; Extend and be fixed on the pairing left and right pivot cradle 5 at the rear portion of this main car frame 4 downwards; Pairing left and right seat rail 6, its rear portion at main car frame 4 is also crooked halfway up to the rear end from rearward tiltedly extending near the place ahead of the fixed position of pivot cradle 5; The pairing left and right strengthening frame of reinforcing between the central part to pivot cradle 5 and above-mentioned seat rail 67.
Above the pairing left and right seat rail 6 of vehicle body frame 2, be provided with and use seat 8 by bus, be provided with container (containing box) 9 in its underpart.Being provided with the handle 10 that is bearing in by axle on the head pipe 3 above the body forward structure, thereunder be extended with front fork 11,11 and be supported with front-wheel 12 at its lower end axle.Rocking arm (being also referred to as back vent) 14 so that the mode axle that front end can be swung is bearing on the pivot cradle 5 of vehicle body central authorities and rearward extends, is supported with trailing wheel 15 at the rearward end axle of rocking arm 14 via pivot 13.Folder is inserted with pairing left and right rear shock absorber 16 between the rear portion of rocking arm 14 and seat rail 6.
Below main car frame 4 and the place ahead of pivot cradle 5, it is motor (being also referred to as power unit) 20 that suspension has as internal-combustion engine.The top of motor 20 is hung to be located on the supporting bracket 17, and this supporting bracket 17 hangs down and is located at the central part of main car frame 4, and the rear portion of motor 20 is fixed on two positions on the pivot cradle 5.That is, motor 20 is supported in the rear portion downside of main car frame 4 with the state of suspention.In addition, vehicle body frame 2 is covered by the plastic body shell 18 that is divided into each several part.
In addition, the output shaft 31 of motor 20 is so that the mode axle that its front end exposes is bearing in the left surface rear portion of crankcase 24.Front end at this output shaft 31 is equipped with output sprocket (being also referred to as driving sprocket wheel) 32, this output sprocket 32 and and the driven sprocket 33 that is wholely set of trailing wheel 15 between be wound with Transmitted chains 34 (with reference to Fig. 1) thus constitute chain drive.
That is to say that this two-wheeled motorcycle 1 constitutes chain drive-type vehicle, the rotation of the output shaft 31 of this motor 20 is transmitted to trailing wheel 15 via chain drive.In addition, this chain drive plays a role as the secondary speed-reducing mechanism that recently sets the reduction speed ratio (secondary speed-reducing ratio) between output shaft 31 and the rear-wheel spindle according to the number of teeth of each sprocket wheel 32,33.In addition, among the figure, reference character 35 expressions cover the cover of chain drive.
Be equipped with at the upwardly extending treadle 36 of vehicle body right and left in crankcase 24 bottoms, at these treadle 36 two ends the driver be installed and put the pair of pedals 36A of pin, 36A.In addition, among Fig. 2, reference character 36B is located at the bottom of crankcase 24 and the lug boss that the screw thread fastening has treadle 36.
In addition, on this two-wheeled motorcycle 1, the foot-operated parts (starting system parts) 37 that constitute the part of 20 the kick-type starter of piloting engine are provided in crankcase 24 left side sides.That is, these foot-operated parts 37 have: front end exposes the foot-operated arm 39 that ground axle suspension is installed on the pedal axle on the crankcase 24 38; Can be installed in the foot treadle 40 of the front end of this foot-operated arm 39 with rotating freely.Thereby trampling foot treadle 40 by the driver makes pedal axle 38 rotations can pilot engine 20.
And, on this two-wheeled motorcycle 1, except kick-type starter, also be equipped with the starting motor 41 that engine start is used based on above-mentioned foot-operated parts 37 controls.This starting motor 41 is installed in crankcase 24 upper surface front portions, can pilot engine 20 by making these starting motor 41 work.That is, in this two-wheeled motorcycle 1, can both pilot engine 20 by any method in foot-operated and the starting motor formula.
Fig. 2 is the in-built figure that represents motor 20 from the vehicle body right side, shows the position of the main running shaft of power-transmission system and starting system.In addition, also show cylinder axis L1.In addition, Fig. 3 is the figure in the III-III cross section of presentation graphs 2, and Fig. 4 is the figure that represents crankcase 24 and cylinder part 22 from the vehicle body right side with peripheral structure, Fig. 5 (A), (B) be expression motor 20 superstructure and about analyse and observe the figure of structure.
As Fig. 2～shown in Figure 5, the cylinder part 22 of motor 20 has: the cylinder block 22A that links with crankcase 24 front surfaces; Cylinder head 22B with the binding of cylinder block 22A front surface; Cover the head-shield 22C of the front surface of cylinder head 22B.Cylinder block 22A has: the cylinder sleeve 22S (with reference to Fig. 3) that can keep piston 21A slidably for constituting the part of cylinder main body (cylinder principal part); Constitute cooling fan (radiation fan) 22F of the cylinder cooling mechanism of the periphery that covers this cylinder sleeve 22S.
Be provided with through hole 42H (with reference to Fig. 4) on this cylinder block 22A and cylinder head 22B, it is clamping bolt 42 that this through hole 42H and cylinder axis L1 are interspersed with the stud bolt that (in this example is four) more than three abreast.In each through hole 42H, insert clamping bolt 42 respectively, one end of each clamping bolt 42 (cylinder block 22A side) is fastened on the crankcase 24, the other end (cylinder head 22B side) at clamping bolt 42 is fastened with tightening nut 43, and cylinder block 22A and cylinder head 22B are fastened on the crankcase 24 integratedly thus.Here, cylinder block 22A and cylinder head 22B have the sectional shape of rectangle, and it is (with reference to Fig. 4 and Fig. 5 (A), (B)) on each bight of rectangular cross-section at center that clamping bolt 42 is configured in cylinder axis L1 along cylinder axis L1.
As shown in Figure 2, cooling fan 22F is the cooling fan with respect to cylinder axis L1 quadrature, more specifically, be provided in a side of the right flank of cylinder sleeve 22S and upper and lower surface and, form multiple row with devices spaced apart on the cylinder axis direction in cylinder above-below direction and the upwardly extending planar of right and left.
As shown in the drawing, the outer circumferential face of a plurality of cooling fan 22F is to observe and when plan view is observed, be respectively along link plane HL, HU, HB (with reference to Fig. 3, Fig. 2) formation that the cylinder axis L1 direction between the clamping bolt 42 is extended with straight line from lateral cylinder surface.Therefore, the cylinder cooling mechanism that is made of a plurality of cooling fan 22F forms along link the general plane shape that the cylinder axis L1 direction between the clamping bolt 42 is extended with straight line, is that lateral cylinder surface (cylinder block 22A side) forms plane shape.
Here, as shown in Figure 1, because the body shell 18 of this two-wheeled motorcycle 1 has the leg protective cover 18A that extends to the rear lower side from body forward structure, so flow downwards and around cylinder part 22, flow along leg protective cover 18A from the wind that travels in vehicle body the place ahead.Because above-mentioned cooling fan 22F is at the upwardly extending fan of upper and lower at lateral cylinder surface, so can not hinder flowing along the wind that travels down of leg protective cover 18A, the wind that travels is easily flowed around cooling fan 22F, thereby can fully guarantee radiating efficiency.
On cylinder head 22B, be formed with firing chamber 22D and the not shown suction port and the relief opening that link to each other with firing chamber 22D, on the 22D of firing chamber, dispose ignition spark plug 23 in the mode that it is right that front end is practised physiognomy, on inlet port, be connected with above-mentioned suction tude 26, in the relief opening outlet, be connected with above-mentioned outlet pipe 29.
As shown in Figure 3, the crankcase 24 of motor 20 is formed with the left and right sides two-part that are made of left crankcase 24A and right crankcase 24B and cuts apart structure.Via the pairing left and right bearing (rolling bearing) 45,45 on crankcase 24A, the 24B about being supported in, bent axle 51 laterally is bearing in crankcase 24 front portions by axle in the mode of axle center C1 and vehicle direct of travel quadrature.
Be provided with V variable v-belt drive 60 on the right side of this bent axle 51 (side), be provided with generator 180 in the left side of this bent axle 51 (opposite side).
Specifically, the left end of bent axle 51 extends in left crankcase 24A to the left, extend near the generating hood of installing in the mode of the left side opening (outer openings) that covers this left crankcase 24A 25 always, and freely be bearing on the generating hood 25 by bearing (rolling bearing) 46 rotations.That is to say that generator 180 is housed in the space that is surrounded by generating hood 25 and left crankcase 24A.Generator 180 has rotor 181 that is fixed on the bent axle 51 and the stator 182 that is configured in the rotor 181, and stator 182 is fixed on the generating hood 25.
V variable v-belt drive 60 is the power transmission mechanisms that do not carry out based on the lubricated dry type of machine oil (below, be called suitable oil (lubricant oil)), is housed in the speed changer accommodation section (cap assembly) 61 on the right side (side) of being located at bent axle 51.This speed changer accommodation section 61 is chambers that do not have fluid that the crankcase 24 with oil lubrication forms respectively, and with the mission case 61A of the main part that constitutes speed changer accommodation section 61 with cover the structure that such left and right sides two-part of speed changer cover 61B of the outer openings (right openings) of this mission case 61A cut apart and form.
Specifically, the right-hand member of bent axle 51 runs through right crankcase 24B further to right-hand extension, and run through the mission case 61A that is attached at the right side of this right crankcase 24B by bolt, extend to always and be connected with near the speed changer cover 61B on the mission case 61A, use as rotating band wheel shaft (live axle) 51R of V variable v-belt drive 60 this right part, on this rotating band wheel shaft 51R driving pulley 63 is installed.
The driven belt wheel shaft (driven shaft) 64 of V variable v-belt drive 60 is bearing in crankcase 24 rear portions with the horizontal earth's axis of mode of axle center C2 and vehicle direct of travel quadrature.This driven belt wheel shaft 64 is positioned at the rear of rotating band wheel shaft 51R abreast, and by being bearing in 65,65 supportings of pairing left and right bearing (rolling bearing) on right crankcase 24B and the speed changer accommodation section 61 (mission case 61A).
On this driven belt wheel shaft 64 driven pulley 67 is installed, is wound with V and is with 68 between driving pulley 63 and driven pulley 67, the rotation of driving pulley 63 is transmitted to driven pulley 67.In addition, between speed changer accommodation section 61 and each sprocket shaft 51R, 64, folder is inserted with sealed member 69A, the 69B that the engine oil that is used to prevent crankcase 24 sides is invaded in speed changer accommodation section 61, thereby sealed between speed changer accommodation section 61 and the crankcase 24.
Driving pulley 63 has fixedly halfbody 63A and the movable halves 63B that rotates with rotating band wheel shaft 51R, and fixedly halfbody 63A is fixed on the rotating band wheel shaft 51R, and movable halves 63B is fixed on the fixedly left side of halfbody 63A in the mode that can move freely in the axial direction.This movable halves 63B is with bent axle 51 rotations, thereby by the effect of the counterweight roller 70 that moves to centrifugal direction because of centrifugal force slide in the axial direction with respect to fixing halfbody 63A near or away from, thereby change the V that is clamped between two sprocket half 63A, the 63B with 68 roll diameter.
The driven pulley 67 of V variable v-belt drive 60 has fixedly halfbody 67A and the movable halves 67B with 64 rotations of driven belt wheel shaft, and fixedly halfbody 67A is fixed on the left side of movable halves 67B.Movable halves 67B is configured in the right part of driven belt wheel shaft 64 via ring-type slide block 71 with moving freely in the axial direction, by disc spring promptly suppress parts 72 to the left (fixedly halfbody 67A side) suppress.Therefore, if the V that is clamped between halved body 63A, the 63B of driving pulley 63 becomes big with 68 roll diameter, then on the contrary, the elastic force pressure of the interval of halved body 67A, the 67B of driven pulley 67 opposing disc spring 72 and expanding out, thereby dwindle V with 68 roll diameter, can automatically carry out stepless change.
Driven belt wheel shaft 64 is given the power transmission mechanism 81 that is configured in the crankcase 24 via starting clutch 80 with transmission of power, and wherein starting clutch 80 is configured in the space (clutch chamber R1 described later) that is formed between right crankcase 24B and the mission case 61A.
Starting clutch 80 is the centrifugal clutchs that carry out the wet type of lubricating of each several part and cooling by oil, have spline and be entrenched in the clutch inner piece 83 on the driven belt wheel shaft 64 and the clutch Outside spare 85 in big footpath, wherein, clutch Outside spare 85 is attached on the clutch output gear 84, clutch output gear 84 is located at the left part of driven belt wheel shaft 64 with rotating freely relatively, is provided with clutch weight 87 on the distolateral a plurality of fulcrums 86 of the periphery that is darted at clutch inner piece 83.Therefore, rotational speed at driven belt wheel shaft 64 surpasses under the situation of fixing speed, engage with clutch Outside spare 85 to the clutch weight 87 that centrifugal direction moves by centrifugal force, make clutch output gear 84 rotations thereby clutch Outside spare 85 and driven belt wheel shaft 64 are rotated integratedly.
In addition, among the figure, reference character 88 is that expression is used to suppress clutch Outside spare 85 and expands the clutch of opening to centrifugal direction and reinforce that use plate, reference character 90 are spacer rings of representing to be configured between clutch output gear 84 and the driven belt wheel shaft 64.This spacer ring 90 is to be listed in the roller row of the bearing of devices spaced apart ground configuration on the circumferencial direction with roller with having two in the axial direction, by these two row roller row, clutch output gear 84 is rotated relatively with respect to driven belt wheel shaft 64.
Promptly, in this motor 20, from V variable v-belt drive 60 to the power transmission mechanism 81 that becomes a reducing gear, constituted the speed changer (starting the pusher side speed changer) of motor 20 sides, that is to say that what V variable v-belt drive 60, starting clutch 80 and power transmission mechanism 81 constituted that power to motor 20 carries out speed change starts the pusher side speed changer.In addition, the chain drive of formation secondary speed-reducing mechanism has constituted the speed changer (the outer gear of motor) outside the motor 20.
On the pairing left and right bearing (rolling bearing) 92,92 that crankcase 24A, 24B about the free earth's axis of intermediate gear shaft 91 rotations is bearing in supported, has the perforation axial region 91A of the wall portion of running through right crankcase 24B.On this perforation axial region 91A, be fixed with and be located at the counter shaft driven gear (reduction gear) 93 in the big footpath of clutch output gear 84 engagements on the driven belt wheel shaft 64, about crankcase 24A, 24B between the space in, be fixed with and be fixed on the countershaft drive gear 94 of the path of terminal gear 95 engagement on the output shaft 31.Thus, the rotation that is positioned at the clutch output gear 84 in crankcase 24 outsides is transmitted via the terminal gear 95 of intermediate gear shaft 91 to the output shaft 31 that is positioned at crankcase 24 with the reduction speed ratio of regulation.In addition, make countershaft drive gear 94 and terminal gear 95 be helical gear, can reduce the sound that produces because of gear engagement.
This torque damper 97 is supported on the output shaft 31, constitutes by having the elastic force pressure friction apply by elastic member (in this example for multi-disc belleville spring) 99 and terminal gear (first transferring elements) 95 and the damper holding member (second transferring elements) 98 of intermeshing not shown cam configuration.Terminal gear 95 rotations freely remain on the output shaft 31, are pressed from both sides the belleville spring 99 that is inserted in terminal gear 95 left sides and suppress to the right, and in addition, damper holding member 98 right side of gear 95 endways is pressed into and is fixed on the output shaft 31.Therefore, from motor 20 side effect driving torques, and do not act on from driven wheel side (trailing wheel 15 sides) to the situation of the reciprocal torque (being countertorque) of driving direction under, by driving torque from motor 20 sides, output shaft 31 rotates driving integratedly with terminal gear 95, is driven as the trailing wheel 15 of driving wheel.On the other hand, under the situation of driven wheel side (trailing wheel 15 sides) effect countertorque, by this countertorque, friction apply between terminal gear 95 and the damper holding member 98 is disengaged, the not shown convexo-convex wheel of damper holding member 98 slides with respect to not shown concavo-convex the wheel in a circumferential direction of terminal gear 95, is relaxed to the transmission of the countertorque of motor 20 sides.Thus, the cammingly torque damper that the countertorque from driven wheel side is absorbed is configured in crankcase 24 between clutch Outside spare 85 and the Transmitted chains 34.
As mentioned above, in this motor 20, by about the adjacent position, right side in the space that surrounded of crankcase 24A, 24B (below, be called the R0 of crankshaft room), be formed with the space that surrounds by right crankcase 24B and mission case 61A (below, be called clutch chamber R1).That is to say that mission case 61A is attached on the right crankcase 24B, double as is for constituting the clutch box body component of clutch casing thus.
And R0 of this crankshaft room and clutch chamber R1 are the chambers that engine oil is lubricated and cools off, and form oily delay portion (being equivalent to food tray 114) in crankcase 24 bottoms and mission case 61A bottom.
In addition, in the adjacent position, right side of this clutch chamber R1, be formed with the space that surrounded by mission case 61A and speed changer cover 61B (below, be called speed changer chamber R2), this speed changer chamber R2 is not the chamber of carrying out the lubricated and cooling of engine oil.That is to say that in this motor 20, chamber and non-existent chamber that engine oil exists are distinguished clearly on the overall width direction.In addition, among Fig. 2, reference character R2A is the bottom surface of speed changer chamber R2.
As shown in Figure 2, pedal axle 38 is in the front lower place of driven belt wheel shaft 64, and the driven pulley 67 that is configured in and forms big footpath is observed on nonoverlapping position from the side.The rotation of pedal axle 38 is passed to bent axle 51 by the foot-operated jack shaft 150 that is made of the first foot-operated jack shaft 151 and the second foot-operated jack shaft 155.
The first foot-operated jack shaft 151 is below the neutral position of driven belt wheel shaft 64 and bent axle 51, observed on the position overlapped by landscape configuration from the side with the driven pulley 67 that forms big footpath, the second foot-operated jack shaft 155 is the rear lower sides at bent axle 51, observed from the side on nonoverlapping position with the driven pulley 67 that forms big footpath by landscape configuration, and constituting and to mesh with driven gear 172 (with reference to Fig. 3) with the foot pedal starting that is located on the bent axle 51.Here, in Fig. 2, the axle center of pedal axle 38 is represented with reference character K1, the axle center of the first foot-operated jack shaft 151 is represented with reference character K2, the axle center of the second foot-operated jack shaft 155 is represented with reference character K3.
Wind-guiding construct to V variable v-belt drive 60 describes below.
Fig. 6 is the side view that (the motor outside) observes mission case 61A from the vehicle body right side, and Fig. 7 is a side view of observing mission case 61A from vehicle body left side (motor inboard).
In the R2 of speed changer chamber, that is to say in speed changer accommodation section 61 import have outside gas, constitute by this outer gas that is imported into V variable v-belt drive 60 cooled off.
As shown in Figure 6, be equivalent to driving pulley 63 above the front upper part of mission case 61A be provided with outside gas suction port 115, be equivalent to driven pulley 67 above the superior posterior of mission case 61A be provided with outside gas relief opening 116.These outer gas suction ports 115 and outer gas relief opening 116 are provided with on front and back devices spaced apart ground, and have pipe section 115A, the 116A that extends abreast to the back upper place, and are formed on the mission case 61A.And, outside these gas suction port 115 and outside the upper end portion of gas relief opening 116 be connected with not shown pipeline, can free flow via the outer gas of this pipeline.In addition, among Fig. 6, reference character 62 is the Drainage Divisions that are used to discharge the water of (in the R2 of speed changer chamber) in the mission case 61A.
As shown in Figure 3, be provided with the air-supply fan 63C that is used to make these driving pulley 63 performance blowing fan effects on the fixedly halfbody 63A of the driving pulley 63 in being disposed at speed changer accommodation section 61, rotation by driving pulley 63, air-supply is rotated with fan 63C, and outer gas is delivered in the R2 of speed changer chamber from outer gas suction port 115.
And, also be provided with the air-supply fan 67C that is used to make driven pulley 67 performance blowing fan effects on the fixedly halfbody 67A of the driven pulley 67 in speed changer accommodation section 61, by the rotation of air-supply with fan 67C, the outer gas that is delivered into from outer gas suction port 115 can be introduced to driven pulley 67 sides in the R2 of speed changer chamber, can be carried out exhaust from outer gas relief opening 116.Thus, generate the outer air-flow from driving pulley 63 side direction driven pulleys 67 sides in the R2 of speed changer chamber, V variable v-belt drive 60 is forced to air cooling.
In addition, among Fig. 6, the sense of rotation of representing driving pulley 63 and driven pulley 67 with solid arrow, observe all to right rotation from right flank, thus can be swimmingly outside outer gas suction port 115 sucks gas, and the outer gas (among Fig. 6, being represented by dotted arrow) that sucks can be carried out exhaust from outer gas relief opening 116 swimmingly.It more than is the explanation of wind-guiding construct.In addition, it is to anticlockwise (Fig. 2, shown in the solid arrow) that the positive veer of intermediate gear shaft 91 is observed from right flank, and it is to right rotation (Fig. 2, shown in the solid arrow) that the positive veer of output shaft 31 is observed from right flank.
Next the oil lubrication structure is described.
As shown in Figure 4, in the crankcase 24 of this motor 20, be provided with the oil pump 120 that engine oil is supplied with to the each several part of motor 20.The oblique below, the place ahead that this oil pump 120 is located at bent axle 51, drive by cam chain, and drive and discharge engine oil by the rotating force of bent axle 51, with this engine oil to each bearing such as bearing 45,45 of supporting crankshaft 51, the supplies such as active valve mechanism (not shown), starting clutch 80 and power transmission mechanism 81 of cylinder part 22.
In addition, this motor 20 has the one-piece type small-sized oil cooler 105 of motor, and the oil of the each several part of 105 pairs of lubricating engines 20 of this oil cooler cools off.This oil cooler 105 has: when mission case 61A casts and the integrally formed tabular oil cooler main body (extension part) 106 of this casing 61A; Be attached at oil cooler cover (oil circuit cover) 107 on this oil cooler main body 106 by bolt.Here, Fig. 8 (A)～(D) shows oil cooler cover 107.In addition, the D-D cross section of Fig. 8 (D) presentation graphs 8 (A).
As Fig. 6 and shown in Figure 7, oil cooler main body 106 is extended in cylinder axis L1 direction from mission case 61A, form the tabular of the side that is positioned at cylinder part 22 (cylinder block 22A), and on the plane HL of the cooling fan 22F that constitutes the cylinder cooling mechanism devices spaced apart ground along its extension.In addition, this oil cooler main body 106 is roughly along the front surface of crankcase 24 upwardly extending shape below haply, is formed with oil circuit (below, be called the cooling oil road) 108A in the mode of extending along the outer shape of this oil cooler main body 106.
That is to say that this cooling oil road 108A forms and growing on the lower direction haply, and the crooked roughly ring-type of lacking, and is connected in the pair of openings portion 110,111 that constitutes oil-in and oil export on fore-and-aft direction.In addition, outer surface in this oil cooler main body 106, promptly in the side of cylinder side, be formed with cancellate cooling fan 106A (with reference to Fig. 7), by this cooling fan 106A, increased the surface area of oil cooler main body 106, thereby can more effectively cool off oil by cooling oil road 108A.In addition, this cooling fan 106A forms cancellate rib shape, therefore, has improved the rigidity of oil cooler main body 106.
Oil cooler cover 107 is the lids to the cooling oil road 108A covering of oil cooler main body 106.Shown in Fig. 8 (A)～(D), on this oil cooler cover 107, form the seal groove 108C (with reference to Fig. 8 (C)) that forms the cooling oil road 108B (with reference to Fig. 8 (C)) on a cooling oil road 108 with cooling oil road 108A combinedly and form and insert oil seal along the periphery of this cooling oil road 108B, simultaneously, on outer surface (face opposite), be formed with the many cooling fans 109 that the shape that is in line along the vertical direction extends with cylinder part 22.
Like this, the cooling fan 106A, 109 that on oil cooler main body 106 and oil cooler cover 107, is provided with cooling oil road 108A, 108B respectively and constitutes the cooler cooling mechanism, therefore, can make cooling oil road 108A, 108B near cooling fan 106A, 109, can improve cooling effectiveness by the engine oil on cooling oil road 108.
In addition, because cooling fan 109 is the fans that extend along the vertical direction,,, the wind that travels to guarantee radiating efficiency efficiently around cooling fan 109 thereby easily flowing so can not hinder along the flowing of the downward wind that travels of leg protective cover 18A.In addition, can reinforce oil cooler cover 107 by this cooling fan 109.In addition, among the figure, reference character 107A is used for oil cooler cover 107 by the bolton portion with through hole of bolton on oil cooler main body 106.
As shown in Figure 2, this oil cooler 105 is that to observe from the side with cylinder axis L1 be that benchmark extends up and down, its lower end PA is positioned at the position lower slightly than bent axle 51, and be positioned at the top of the base portion lower end of cylinder block 22A, its upper end PB is positioned at the position higher than bent axle 51, and is positioned at the identical height in base portion upper end with cylinder block 22A.Therefore, oil cooler 105 is observed with cylinder block 22A overlapping from the side, and it is outstanding from motor 20 to suppress to observe from the side oil cooler 105,, can suppress motor 20 above-below direction outstanding forwards, backwards that is.
In addition, because this motor 20 is a single cylinder motor, so compare with the Extreme breadth of the left and right directions of motor 20, the width of cylinder part 22 is narrow, in cylinder part 22 with constitute between the mission case 61A of cap assembly of motor 20 sides and be formed with end difference X (with reference to Fig. 2).As shown in Figure 2, because above-mentioned oil cooler 105 is located on the end difference X between cylinder part 22 and the mission case 61A, so can suppress to observe oil cooler 105 outstanding from motor 20 from overlooking, that is to say, can suppress outstanding to the left and right directions of motor 20.Therefore, thereby suppress the outstanding maximization that can avoid motor 20 of oil cooler 105 fully from motor 20, and, oil cooler 105 is not maximized highlightedly, and can protect oil cooler 105.
In addition, the lower end PA of oil cooler 105 is positioned at the top of the food tray 114 (with reference to Fig. 4) that the oil measure that makes crankcase 24 stays.That is to say, as shown in Figure 4, food tray 114 is set at the height that is communicated with in the horizontal direction with filter chamber 121, this filter chamber constitutes oil pump 120 sucking-off oil filtration devices, therefore, be positioned at crankcase 24 bottoms, and can adverse current be located at the position lower than cylinder part 22 to the mode of cylinder part 22 to be trapped in oil in the food tray 114.
Therefore, the oil cooler 105 of this structure is set at certain ratio and is trapped on the high position of the last liquid level UL (with reference to Fig. 2) of the oil in the food tray 114, and disposes from food tray 114 with leaving.If oil cooler 105 and food tray 114 dispose with leaving, then because after carrying out the lubricated and cooling of each several part, the oily temperature that deadweight drops to the high temperature in the food tray 114 is difficult to transmit to oil cooler 105, therefore, can improve the cooling effectiveness of oil cooler 105.
In addition, as shown in Figure 4, oil pump 120 is located at the top of filter chamber 121, and via the suction of extending up and down in right crankcase 24B oil circuit 122, oil pump 120 and filter chamber 121 are communicated with.In addition, dispose oil strainer 123 in filter chamber 121 with between sucking with oil circuit 122, by this oil strainer 123, the oil that is sucked by oil pump 120 is cleaned (filtration).
Fig. 9 is the figure of expression oil lubrication system.In addition, in Fig. 9, represent flowing of oil by solid arrow.
As shown in Figure 9, oil pump 120 is positioned at food tray 114 downstreams via oil strainer 123 and suction with oil circuit 122, and by this oil pump 120, the oil that is trapped in the food tray 114 is picked up.This oil pump 120 has single oily ejiction opening 120A (with reference to Fig. 5 (B)), is connected with working connection 131 on this oil ejiction opening 120A, to these working connection 131 ejection oil.
Shown in Fig. 5 (B), this working connection 131 has: be formed on first oil circuit 132 in the right crankcase in the wall of right crankcase 24B in the mode that is communicated with oily ejiction opening 120A; Be formed on first oil circuit 133 in the mission case in the wall of mission case 61A in the mode that links to each other with the downstream of first oil circuit 132 in this right crankcase.Promptly, the downstream of first oil circuit 132 is in right crankcase 24B and interface upper shed mission case 61A in the right crankcase, and is communicated with first oil circuit 133 in the mission case of in mission case 61A and interface upper shed right crankcase 24B.
On the opening portion 110 that this oil circuit that becomes oil cooler 105 exports, as shown in Figure 7, be connected with second oil circuit 134 in the mission case in the wall that is formed on mission case 61A, the downstream of second oil circuit 134 is in mission case 61A and interface upper shed right crankcase 24B in this mission case.On the other hand, on the interface of the mission case 61A in right crankcase 24B, be formed on the interior interior mode opening of second oil circuit 135 (with reference to Fig. 4) of right crankcase of wall of right crankcase 24B to be communicated with second oil circuit 134 in the mission case.
As shown in Figure 4, second oil circuit 135 is the oil circuits that extend in right crankcase 24B to the bent axle 51 at the rear that is configured in this oil cooler 105 from oil cooler 105 in the right crankcase.As shown in Figure 9, the oil by oil cooler 105 is lubricated crankpin 51C through oil circuit 135A.In addition, the oil by oil cooler 105 is branched off into oil circuit 135B, and plays a role as the driven bearing clutch lubrication oil circuit according to the sequentially feeding oil of bearing (the driven bearing) 65 of driven belt wheel shaft 64 and starting clutch 80.
Figure 10 represents the lubricating structure of crankpin 51C.
As shown in the drawing, be fed into the oil of the oil circuit 135 in the right crankcase 24B, by being formed on oil on the bent axle 51 by with groove 51M and by being supported in the inboard of the bearing 45 on the right crankcase 24B, and be fed into the crankpin 51C that is configured between left and right sides crankcase 24A, the 24B.And this oil is fed into the big end of connecting rod 21B by the oil circuit 51N that is formed on the path on the crankpin 51C.
That is, in this structure, at the outer circumferential face of bent axle 51, and the oil that thereby the formation of formation gap makes oil pass through to crankpin 51C side between the bearing 45 on right side passes through to use groove 51M, thus, need not in bent axle 51 to form oil circuit, just can constitute and make the structure of oil to the supplies such as slip surface of connecting rod 21B.In addition, oil also can be able to be provided with one during sufficient lubrication by can several being set devices spaced apart on the circumferencial direction of bent axle 51 with groove 51M.In addition, adopt stuffing box bearing on the bearing 45 that is supported on the right crankcase 24B, oil can not enter in this bearing 45.
As shown in Figure 9, in this motor 20, between oil pump 120 and oil cooler 105, be branched off into the first auxiliary oil circuit 136A and the second auxiliary oil circuit 136B from working connection 131.The first auxiliary oil circuit 136A via throttle orifice (throttling) 137A branch, and supplies with oil via cylinder block 22A to cylinder head 22B from working connection 131.The second auxiliary oil circuit 136B via throttle orifice 137B branch, and supplies with oil to piston nozzle 138 from working connection 131.
Under this situation, oil circuit (cylinder head lubricating oil path) 136A shown in the flowing of oil indicated by the arrow among Fig. 4 and Fig. 5 like that, constitute a through hole 42H who comprises among a plurality of (in this example being four) through hole 42H, wherein a plurality of through hole 42H run through cylinder block 22A and cylinder head 22B and the plug in clamping bolt 42 that is connected with.Therefore, oil is by through hole 42H and separate gap between the clamping bolt 42 that interts with gap in this through hole 42H, and via cylinder block 22A to cylinder head 22B side flow, be lubricated being configured in active valve mechanism in the cylinder head 22B etc. by the oil drainage hole among the cylinder block 22A 139 (with reference to Fig. 4).Like this, owing to the through hole 42H that is penetrated with clamping bolt 42 can be also used as oil circuit, can avoid the rigidity of cylinder part 22 to reduce and the realization miniaturization.
In addition, the second auxiliary oil circuit 136B compares the sectional area that forms thin footpath with other the oil circuit in connecting cylinder sleeve 22S, supplies with oil to the piston nozzle 138 that sprays oil towards piston 21A, carries out the lubricated of piston lubrication portion and piston cooling.Under this situation,, therefore, can guarantee the oil pressure of piston nozzle 138 owing to be to supply with oil to piston nozzle 138 via throttle orifice 137B.
Like this, in the motor 20 of present embodiment, owing to have the tabular oil cooler 105 that on cylinder axis L1 direction, extends and be positioned at the side of cylinder part 22,, can suppress the outstanding of oil cooler 105 so can dispose oil cooler 105 along cylinder side wall.
And, the cooling fan 22F that constitutes the cylinder cooling mechanism observes from lateral cylinder surface and forms along link the plane of plane HL that the cylinder axis L1 direction between the clamping bolt 42 extends with straight line, because oil cooler 105 devices spaced apart ground on the HL of this plane extends, so can dispose oil cooler 105 near cylinder part 22, (cylinder block 22A) even large-scale oil cooler 105 also can suppress its outstanding from motor 20.
In addition, in this structure, motor 20 constitutes the horizontal engine that has cylinder part 22 (cylinder block 22A) in the place ahead that is supported in the bent axle 51 on the crankcase body 24, and, constitute at crankshaft end and have mission case 61A, below bent axle 51, has food tray 114, in this structure, owing to oil cooler 105 is configured in the top of food tray 114, so have in the horizontal engine of mission case 61A at crankshaft end, can suppress the oil cooler of configuration highlightedly 105 of oil cooler 105, and, oil cooler 105 and food tray 114 disposes with leaving, thereby can avoid oil cooler 105 to be subjected to the warm influences of oil in the food tray 114 and make the temperature rising.Under this situation,, can correspondingly make oil cooler 105 miniaturizations with the amount that cooling effectiveness improves owing to improved the cooling effectiveness of oil cooler 105.
In addition, in mission case 61A, contain the V variable v-belt drive 60 that does not need lubricant oil to be lubricated, because oil cooler 105 is formed on the front upper part of mission case 61A, so in inside is to do on the box part in space to be formed with oil cooler 105, and, oil cooler 105 disposes from food tray 114 with leaving, can further improve the cooling effectiveness of oil cooler 105.
In addition, because oil cooler 105 is configured in oil pump 120 and is positioned between the crankshaft lubrication portion (bearing 45,45) in its downstream, so the oil by oil cooler 105 coolings can be supplied to crankshaft lubrication portion, even the not too good motor of the thermal diffusivity of crankshaft room also can carry out good cooling to crankshaft room.
In addition, owing to be provided with the first auxiliary oil circuit 136A (cylinder head lubricating oil path), this first auxiliary oil circuit 136A between oil pump 120 and the oil cooler 105 via throttle orifice 137A branch, and oil is supplied to the cylinder head 22B that is installed on the cylinder block 22A, the supply oil circuit so need not to extend to cylinder head 22B, just can carry out well that the lubricated portion's (active valve mechanism) of cylinder head waits lubricated and based on the cooling of oil, and can prevent that cylinder head from lubricating portion's oil-break.
In addition owing to have a piston nozzle 138, this piston nozzle 138 between oil pump 120 and the oil cooler 105 via throttle orifice 137B branch, and spray oil, so can guarantee the oil pressure of piston nozzle 138 to the piston 21A that in cylinder, is free to slide.
In addition, because inner space at mission case 61A, cooling air is by suction and discharge, oil cooler 105 is integrally formed on the mission case 61A, so the cooling effect based on inner cooling air also acts on the oil cooler 105 via mission case 61A, thereby improved the cooling effectiveness of oil cooler 105.
In addition; because cylinder part 22 (cylinder block 22A) disposes with respect to bent axle 51 horizontal forward direction ground; has mission case (cap assembly) 61A in the bent axle side; oil cooler 105 is configured on the end difference X between cylinder part 22 (cylinder block 22A) and the mission case 61A; so can avoid the maximization of motor 20, and realize the maximization and the protection of oil cooler 105.
In addition, because oil cooler 105 has cooling fan 109, the 106A that plays a role as the cooler cooling mechanism in the side of the opposition side of the side of cylinder side and cylinder,, improve cooling effectiveness so can increase and guarantee heat diffusion area.
More than, describe the present invention based on a mode of execution, still, the invention is not restricted to this.For example, in the above-described embodiment, the situation that cooling fan 109,106A by air cooling is constituted the cooling mechanism of oil cooler 105 is illustrated, and still, is not limited thereto.For example, can also constitute on oil cooler 105 and form water passage, make oil cooler 105 become water-cooled thereby make cooling water flow through this water passage.Under this situation, for the water passage that constitutes the cooler cooling mechanism, form plane along what extend with the cylinder axis L1 direction between the straight line binding clamping bolt 42, and, oil cooler 105 is extended along this devices spaced apart ground, plane, thus, oil cooler 105 can be disposed near cylinder part 22 (cylinder block 22A), even large-scale oil cooler 105 also can be avoided its outstanding from motor 20.
In addition, in the above-described embodiment, be illustrated in single cylinder motor, being suitable for situation of the present invention, but be not limited thereto.And, being not limited in the power unit cooling unit of two-wheeled motorcycle, be suitable for situation of the present invention, the power unit cooling unit of riding vehicle also can be suitable for the present invention.In addition, be meant that as riding vehicle striding across vehicle body carries out rolling stock by bus, not only be two-wheeled motorcycle (also comprising the bicycle of being with prime mover), comprise the three-wheeled vehicle and the four-wheel car that are divided into ATV (All-terrain moving vehicle), and comprise the scooter of pin mounting portion with low base plate.
Claims (10)
1. the cooling unit of a power unit, described power unit has crankcase and cylinder, and described cylinder has cylinder sleeve that can keep piston and the cylinder cooling mechanism that covers the periphery of this cylinder sleeve with being free to slide, it is characterized in that,
Has oil cooler, the cooler cooling mechanism that this oil cooler has the oil circuit that passes through for the oil that is fed into described power unit, the oil by this oil circuit is cooled off, this oil cooler extends on the cylinder axis direction, and forms the tabular of the side that is positioned at described cylinder.
2. the cooling unit of power unit as claimed in claim 1 is characterized in that,
Described cylinder passes through so that roughly uniformly-spaced the clamping bolt more than three and the described crankcase of configuration are fastened integratedly,
Described cylinder cooling mechanism forms the general plane shape that extends along the cylinder axis direction that links with straight line roughly between the described clamping bolt, and described oil cooler extends along the devices spaced apart ground, plane of described cylinder cooling mechanism.
3. the cooling unit of power unit as claimed in claim 1 or 2 is characterized in that,
Described power unit has cylinder in the place ahead that is bearing in the bent axle on the crankcase, has mission case at crankshaft end, has food tray below bent axle,
Described oil cooler is configured in the top of described food tray.
4. the cooling unit of power unit as claimed in claim 3 is characterized in that,
Described mission case is accommodated V belt speed changer, and described oil cooler is located at the front upper place of described mission case.
5. as the cooling unit of claim 3 or 4 described power units, it is characterized in that,
Have oil pump, this oil pump picks up the oil of described food tray, and oil is supplied with to the each several part that comprises crankshaft lubrication portion,
Described oil cooler is configured in described oil pump and between the described crankshaft lubrication portion in its downstream.
6. the cooling unit of power unit as claimed in claim 5 is characterized in that,
Have the cylinder head lubricating oil path, this cylinder head lubricating oil path between described oil pump and the described oil cooler via throttle orifice branch, and oil supplied with to the cylinder head that is installed on the described cylinder.
7. as the cooling unit of claim 5 or 6 described power units, it is characterized in that,
Have the piston nozzle, this piston nozzle between described oil pump and the described oil cooler via throttle orifice branch, and oil sprayed to the piston that is free to slide in described cylinder.
8. as the cooling unit of each the described power unit in the claim 3～7, it is characterized in that,
In the inner space of described mission case, cooling air is by suction and discharge, and described oil cooler is integrally formed on the described mission case.
9. the cooling unit of power unit as claimed in claim 1 is characterized in that,
Described cylinder disposes frontward with respect to the bent axle level, has cap assembly in described bent axle side, and described oil cooler is configured on the end difference between described cylinder and the described cap assembly.
10. the cooling unit of power unit as claimed in claim 9 is characterized in that,
Described oil cooler is located on the described cap assembly, has the cooling fan as described cooler cooling mechanism on the side of the opposition side of the side of cylinder side and cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-196596 | 2009-08-27 | ||
| JP2009196596A JP5486872B2 (en) | 2009-08-27 | 2009-08-27 | Power unit cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102003263A true CN102003263A (en) | 2011-04-06 |
| CN102003263B CN102003263B (en) | 2015-02-18 |
Family
ID=43810916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010246350.8A Active CN102003263B (en) | 2009-08-27 | 2010-08-04 | Cooling device of a power unit |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5486872B2 (en) |
| CN (1) | CN102003263B (en) |
| AR (1) | AR077794A1 (en) |
| BR (1) | BRPI1002925B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278186A (en) * | 2011-05-11 | 2011-12-14 | 郑凌 | Four-stroke engine oil cooling system |
| CN111433116A (en) * | 2017-11-02 | 2020-07-17 | 比亚乔公司 | Electric driving motorcycle |
| CN113879438A (en) * | 2020-07-03 | 2022-01-04 | 光阳工业股份有限公司 | Motorcycle with a motorcycle body |
| CN114396472A (en) * | 2021-10-12 | 2022-04-26 | 华为数字能源技术有限公司 | Power assembly and vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5878450B2 (en) * | 2012-09-28 | 2016-03-08 | 本田技研工業株式会社 | Air-cooled oil cooler mounting structure for internal combustion engines |
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- 2010-08-05 AR ARP100102881A patent/AR077794A1/en active IP Right Grant
- 2010-08-24 BR BRPI1002925-7A patent/BRPI1002925B1/en active IP Right Grant
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Cited By (5)
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| CN102278186A (en) * | 2011-05-11 | 2011-12-14 | 郑凌 | Four-stroke engine oil cooling system |
| CN111433116A (en) * | 2017-11-02 | 2020-07-17 | 比亚乔公司 | Electric driving motorcycle |
| CN113879438A (en) * | 2020-07-03 | 2022-01-04 | 光阳工业股份有限公司 | Motorcycle with a motorcycle body |
| CN114396472A (en) * | 2021-10-12 | 2022-04-26 | 华为数字能源技术有限公司 | Power assembly and vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5486872B2 (en) | 2014-05-07 |
| BRPI1002925B1 (en) | 2019-07-09 |
| AR077794A1 (en) | 2011-09-21 |
| CN102003263B (en) | 2015-02-18 |
| JP2011047334A (en) | 2011-03-10 |
| BRPI1002925A2 (en) | 2012-05-29 |
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