CN101907008B - Motorcycle engine ventilating device - Google Patents
Motorcycle engine ventilating device Download PDFInfo
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- CN101907008B CN101907008B CN 201010200379 CN201010200379A CN101907008B CN 101907008 B CN101907008 B CN 101907008B CN 201010200379 CN201010200379 CN 201010200379 CN 201010200379 A CN201010200379 A CN 201010200379A CN 101907008 B CN101907008 B CN 101907008B
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- engine case
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Abstract
The invention provides a motorcycle engine ventilating device, which can effectively realize small-size and light weight, and realize simplification of structure and machining and the like. The motorcycle engine has an engine case. The engine case contains a crankcase 12 configured with a crankshaft and a gear shifting box 19 configured with a plurality of transmission gears. A ventilating box 22 is configured on the upper surface of the rear portion of the engine case, and an oil return gateway 74 communicated to the ventilating box 22 is formed on the rear portion wall 19c of the engine case, leakage gas is led from the crankcase 12 to the ventilating box 22, the gas and liquid are separated, the oil after separation refluxes to the oil storage part 24 through an oil return gateway 74.
Description
Technical field
The present invention relates to the air-breather (Japanese: Block リ one ザ device), relate in particular to the way to cycle oil structure of motors such as a kind of motorcycle.
Background technique
In this motor, can produce from the firing chamber to the gas (gas leakage) of crankshaft room's internal leakage.When the generation because of gas leakage was risen pressure in the crankshaft room, lubricant oil might ooze out from oil seal parts etc., thus gas leakage is discharged to external engine, prevent crankshaft room in press liter.
In the case,, therefore consider environmental problem usually, adopt the structure that it is not returned in motor to airborne release because gas leakage contains unburned gas and lubricant oil.The motor mechanism that gas leakage is returned in motor becomes: make gas leakage gas-liquid separation in air-breather become gas and lubricant oil, wherein, gas is returned to the suction means side, and lubricant oil is returned to oil stock portion.
Especially for the motor that uses the crankcase of cutting apart formation up and down; For example the motor put down in writing of patent documentation 1 is such; In crankcase, be provided with the occasion of ventilation chamber; Lubricant oil in ventilation chamber after the gas-liquid separation is sent back to oil stock portion through the path that between crankshaft room and gearbox chamber, is provided with.
Patent documentation 1 japanese kokai publication hei 8-189325 communique
Summary of the invention
The problem that invention will solve
Yet in gap between crankshaft room and gearbox chamber or the at interval less motor, the space that can be used to be provided with way to cycle oil in the engine interior is extremely limited.In addition, in external engine, between this space (perhaps at interval) and ventilation chamber, dispose for example battery motor (actuating motor), and between crankshaft room and gearbox chamber, form way to cycle oil, come down to difficulty.
As its countermeasure, there is miscellaneous parts such as using conduit or flexible pipe to form the technology of way to cycle oil.Perhaps shown in figure 12; Can adopt following method: assortment has a plurality of speed change gear 200A in (gearbox) 200 of gearbox chamber; Are arranged on the outer wall 201 of this gearbox chamber 200 way to cycle oil 202 is outstanding, make from the oil backflow of ventilation chamber 203 through this way to cycle oil 202 etc.But, with this example serving as typical case when using miscellaneous part etc., dark bolt 204 be used for just becoming necessary to its passage of installing 205 and processing bolt 206.Therefore, just become unfavorable saving between engine air like this with aspect such as reduction number of components.
In view of actual conditions, the object of the present invention is to provide a kind of air-breather of motorcycle engine, can obtain miniaturization and effectively, and the simplification of implementation structure and processing etc.
Be used to solve the means of problem
The air-breather of motorcycle engine of the present invention, this motorcycle engine has engine case, and this engine case comprises crankcase that disposes bent axle and the gearbox that disposes a plurality of speed change gears, and this air-breather is characterised in that, comprising:
Vent box, it is disposed at the rear upper surface of said engine case;
Way to cycle oil, it is formed at the rear wall of said engine case, is communicated with said vent box,
Wherein, said vent box is directed to said vent box with gas leakage from said crankcase and carries out gas-liquid separation, and separated oil is refluxed to food tray through said way to cycle oil.
In addition; The air-breather of motorcycle engine of the present invention; It is characterized in that; Said crankcase and said gearbox form in said engine case and are interconnected, and said way to cycle oil is formed on the rear wall of said gearbox of a part that constitutes said engine case, and side-prominent in said gearbox.
In addition, the air-breather of motorcycle engine of the present invention is characterized in that, the gear mesh of non-maximum diameter should dispose in all speed change gears of being arranged in said way to cycle oil and the said gearbox.
In addition, the air-breather of motorcycle engine of the present invention is characterized in that, also has the actuating motor that is installed on the said engine case upper surface, and this actuating motor is configured in between upwardly extending cylinder of said engine case and the said vent box.
In addition, the air-breather of motorcycle engine of the present invention is characterized in that, it is overlapping to see that from the side said way to cycle oil is configured to and is arranged at least one interior speed change gear of said gearbox.
The effect of invention
Adopt the present invention, side-prominent and rearward outstanding in gearbox through making way to cycle oil, can dispose motor not producing on the optimum position of interference with vehicle body frame.Specifically, through with gearbox in the corresponding configuration of speed change gear of speed change gear, particularly minimum diameter of non-maximum diameter, can prevent mutual interference, can also realize the miniaturization of engine case simultaneously effectively.Further, arrange before and after on the upper surface of engine case actuating motor and vent box are set, can become miniaturization, and keep the suitable configuration relation with peripheral Aided Machine, make the advantageous configurations structure of vent box.
Description of drawings
Fig. 1 is the side view of the motorcycle of example of the present invention.
Fig. 2 is the peripheral side view of power unit of the motorcycle of expression example of the present invention.
Fig. 3 is the peripheral stereogram of power unit of the motorcycle of expression example of the present invention.
Fig. 4 is the stereogram of power unit of the motorcycle of expression example of the present invention.
Fig. 5 is the side view and the plan view on engine case top of the motorcycle engine of expression example of the present invention.
Fig. 6 is the plan view of engine case bottom of the motorcycle engine of expression example of the present invention.
Fig. 7 is the interior routine plan view of formation of gearbox of the motorcycle engine of expression example of the present invention.
Fig. 8 is the stereogram of engine case bottom of the motorcycle engine of expression example of the present invention.
Fig. 9 is the sectional drawing along way to cycle oil of the motorcycle engine of expression example of the present invention.
Figure 10 is the figure of configuration relation of speed change gear of way to cycle oil of the motorcycle engine of expression example of the present invention.
Figure 11 is the right side view of the motorcycle engine of expression example of the present invention.
Figure 12 is the figure that representes the formation example of air-breather in the past.
Symbol description
10: power unit; 11: motor; 12: crankcase; 12a: left side wall; 12b: rear wall; 13: crankcase top; 13a, 14a: fitting surface; 14: the crankcase bottom; 15: cylinder; 16: cylinder head; 17: the cylinder skull; 18: actuating motor; 19: gearbox; 19a: left side wall; 19A: top box; 19B: nowel; 20: the magnetic force cover; 21: clutch cover; 22: vent box; 23: vent cap; 24: food tray; 25: bent axle; 25a: crankweb; 26: the axle center; 27: metal bearing (bearing portion); 28: countershaft; 29: driving shaft; 30,31,32,33: bearing; 34: elementary follower; 35: bearing; 36: clutch device; 37: clutch linkage; 38: clutch outer member; 39: clutch hub; 40: pressing plate; 41: active plate; 42: follower plate; 43: clutch spring; 44: the clutch separation part; 45: primary damper; 46: the rivet parts; 47: splined shaft; 48,49: the gear crowd; 50: driving sprocket wheel; 51: stepped part; 52: the clutch circuit; 53: outer tube; 54: hang the portion of ending; 55: the clutch separation support; 56: clutch release shaft; 57: cam bit; 58: the clutch separation arm; 58a: front end; 59: front end; 60: the accommodation section; 61: push rod; 62: intermediate bar; 63: the main passage; 64,65,66,67: oily path; 68: leakage of oil prevents groove; 69: ventilation chamber; 70: air blowing portion; 71: gas leakage imports path; 72: flexible pipe; 73: intercommunicating pore; 74: way to cycle oil; 100: motorcycle; 101: vehicle body frame; 102: the head pipe; 103: front fork; 104: deflecting bar; 105: handle; 106: clutch shaft; 107: wing mirror; 108: front-wheel; 109: front mudguard; 110: brake disc; 111: the fuel tank track; 112: body shell; 113: falling tube; 114: manage down; 115: seat pillar; 116: seat rail; 117: pivot cradle; 118: pivot; 119: swing arm; 120: trailing wheel; 121: chain; 122: driven sprocket; 123: motor is provided with part; 124: fuel tank; 125: seat; 126: rear mudguard; 127: bracket; 128: bottom bracket; 129: the head lamp unit; 130: instrument pack; 131A～131C: cover class; 132: headlight; 133: taillight; 134: air filter; 135: throttle body; 136: actuator; 137: sparger; 138: discharge tube; 139: baffler; 140: catalyst device; 141: chiller unit; 142: cooler; 143: flexible pipe; 144: water pump; 145: flexible pipe; 146: flexible pipe.
Embodiment
Below, describe based on the preferable example of accompanying drawing the air-breather of motorcycle engine of the present invention.
Here at first the overall structure of the motorcycle 100 of this example is carried out summary description.Fig. 1 representes the motorcycle 100 of this example.In addition, in each main place of scheming of following institute reference, arrow Fr is used in the place ahead, and the rear is represented respectively with arrow Rr.In addition, as required, the left and right directions of car body (overall width direction) is represented with arrow L, arrow R respectively.
In Fig. 1,, but be supported with two front forks 103 in the front portion of the vehicle body frame of for example processing by steel or aluminum alloy 101 with utilizing head pipe 102 left-right rotation.In the upper end of front fork 103, be fixed with deflecting bar 104, have handle 105 in the right ends of deflecting bar 104.In addition, on the deflecting bar 104 in left side, dispose clutch operating device 106, near the upright wing mirror 107 that the is provided with base portion of handle 105 in the front side of handle 105.And, in the bottom of front fork 103, rotatably be supported with front-wheel 108, and be fixed with front mudguard 109 with the state on the top that covers front-wheel 108.Front-wheel 108 has and its brake disc that rotates integratedly 110.
The vehicle body frame 101 of this example constitutes half pair of cradle structure.Again referring to figs. 2 and 3, have the fuel tank track 111 of from the beginning managing 102 pairing left and right of extending to the rear lower side, each fuel tank track 111 combines with the body shell 112 of configuration in an approximate vertical direction respectively.From the beginning single falling tube 113 manages 102 sharply inclination and extensions downwards of side rearward, and there is a pair of following pipe 114 in branch in the lower end of falling tube 113.Each time pipe 114 rearward extends, and combine with the underpart of seat pillar 115 respectively in parallel to each other.In addition, body shell 112 combines respectively with near the underpart of seat pillar 115.Seat rail 116 is from extending to the attitude that the back upper place tilts with appropriateness near the top of body shell 112, and the seat pillar 115 that extends to the back upper place combines with this seat rail 116.Form the main skeleton of vehicle body frame 101 by these frameworks or track.
Be provided with pivot cradle 117 near the connecting part of body shell 112 and seat pillar 115, on the pivot 118 that sets on this pivot cradle 117, swing up and down the front end that supports swing arm 119 freely.In addition, between vehicle body frame 101 and swing arm 119, not shown back buffer cell is installed, and, in the rear end of swing arm 119, be supported with trailing wheel 120 rotationally.Trailing wheel 120 can be driven in rotation through the driving sprocket wheel 122 that is wound with chain 121.
On vehicle body frame 101, be provided with a plurality of motors part (motor suspended portion) 123 (in Fig. 2, representing one of them) is set, through these motors part 123 is set and is equipped with the power unit 10 that comprises motor etc.Later on power unit 10 is elaborated.Above power unit 10, be supported with fuel tank 124 through 111 lift-launchs of fuel tank track, at the rear side of fuel tank 124, be supported with seat 125 through seat rail 116.125 the lower rear at the seat is provided with the rear mudguard 126 that covers trailing wheel 120 from the top.
In addition, in Fig. 1, utilize the bracket 127 on front fork 103 tops and bottom bracket 128 to support head lamp unit 129.On this head lamp unit 129, be equipped with the instrument pack 130 that comprises velocimeter, tachometer or various tutorial light etc.And, near downside, be coated with a shell or a cover type 131A～131C along the side at fuel tank 124, seat 125, on vehicle, constitute thus and have the outward appearance of one sense.In addition, vehicle front and rear part paired headlight 132 and taillight 133 about being equipped with respectively.
Next, the periphery to power unit 10 describes.With reference to Fig. 2 and Fig. 3, provide in the suction system of mixed air at motor 11 to power unit 10, be supported with air filter 134 in the substantial middle portion of car body through vehicle body frame 101.This air filter 134 is connected with the inlet menifold of motor 11 through throttle body 135.Dispose the throttle valve (not shown) that opens and closes this air suction way in the throttle body 135, this throttle valve can be by actuator 136 drive controlling.In addition, the sparger 137 of fuel is installed in throttle body 135, this sparger 137 will spray in the air suction way in throttle valve downstream from the fuel that fuel tank 124 provides.
In addition, in the vent systems of motor 11, discharge on the menifold and be connected with discharge tube 138, the exhaust gas after the burning that in motor 11, generates is through discharge tube 138 exhausts.Many (being 2 in this example) discharge tubes 138 extend downwards from the front portion of power unit 10, and set is rearward extended from the rear portion of power unit 10 as outlet pipe in its underpart.This outlet pipe combines with baffler (muffler) 139.The bottom of power unit 10 disposes catalyst device 140 midway at outlet pipe, discharges from baffler 139 through the exhaust behind these catalyst device 140 Cress.
In addition, in this example, motor 11 is made water-cooled, has the cooling system that comprises chiller unit 141 for this reason.In chiller unit 141, the place ahead of motor 11 is equipped with cooler 142, utilizes cooler 142 cooled cooling waters through flexible pipe 143, is directed to water pump 144.The cooling water that water pump 144 will import from cooler 142 is given to the water jacket that the cylinder block of motor 11 forms through flexible pipe 145, carries out the cooling of motor 11 thus.The cooling water that has cooled off motor 11 refluxes to cooler 142 through flexible pipe 146.
What here, Fig. 4 represented is power unit 10.The motor 11 of power unit 10 has: by the cylinder skull 17 on the crankcase 12 of crankcase top 13 (Fig. 5) and crankshaft room bottom 14 (Fig. 6) one be combined into, the cylinder 15 that combines with the front upper part of crankcase 12, the cylinder head 16 that further combines with the top of cylinder 15 and the top that covers cylinder head 16, these parts carry on vehicle body frame 101 with incorporate posture.
In addition, after the bent axle stated can rotate the earth's axis and be supported in the crankcase 12, piston can be housed in the cylinder 15 with pumping, both connect through connecting rod.In addition, cylinder head 16 contains the driving valve device that is used to open and close admission air valve and drain tap.
In this example, on crankcase top 13, be equipped with actuating motor 18 at the rear side of cylinder 15.In addition, the integrally formed gearbox 19 of state that is connected with rear side with crankcase 12.This occasion makes crankcase top 13 rearward extend, and make these extension part one respectively with crankcase bottom 14 and combines, thereby forms gearbox 19.The left shaft end configuration of bent axle constitutes rotor machine, and this rotor machine is by 20 coverings of magnetic force cover.Configuration constitutes clutch device on the right shaft end of stating countershaft after the rear side institute parallel configuration of bent axle, and this clutch device is by 21 coverings of clutch cover.In addition, the top of gearbox 19 (top box 19A) is provided with vent box 22, and this vent box 22 is by 23 coverings of vent cap.In addition, the bottom that strides across these parts of gearbox 19 (nowel 19B) from crankcase bottom 14 disposes food tray 24.In addition, comprise crankcase 12 and be generically and collectively referred to as engine case with gearbox 19.
Above-mentioned constituent elements of power unit 10 etc. is further elaborated.Fig. 5 is the left side view and the plan view on expression crankcase top 13, and Fig. 6 is the plan view of expression crankcase bottom 14 (with gearbox 19), and Fig. 7 is the plan view of expression gearbox 19.Crankcase 12 constitutes cutting apart up and down of crankcase top 13 and crankshaft room bottom 14; In both of crankcase top 13 and crankcase bottom 14, be formed with the metal bearing (or bearing portion) 27 of this bent axle 25, thus consistent at the height and position in the last axle center 26 that makes bent axle 25 of these fitting surfaces 13a, 14a.
Owing to be side by side two inflator motors in this example, therefore be disposed with 4 metal bearings 27 along the overall width direction, make the both sides of its support crankweb 25a relative with each inflator.These metal bearings 27 dispose with the mode of left and right directions central dispense in crankcase 12 in fact.That is, bent axle 25 is configured in fact on the roughly symmetrical position with respect to engine center (centre line C L) with metal bearing 27.
As stated, the rear side at crank box 12 has formed gearbox 19 with the state that extends to rear side.As shown in Figure 7, ground disposes and bent axle 25 is parallel respectively before and after in gearbox 19 countershaft 28 and driving shaft 29.Countershaft 28 is through bearing 30,31 and driving shaft 29 is supported by axle respectively through bearing 32,33.
Elementary driven gear 34 rotates distolateral, the for example right side that the earth's axis freely is supported on countershaft 28 through bearing 35, and is provided with clutch device 36 on its right side.As shown in Figure 7, these elementary driven gears 34 and clutch device 36 are configured in the outside of engine case (gearbox 19).Distolateral at another of countershaft 28, be the left end of the opposition side of clutch device 36, dispose clutch linkage 37.In addition, after being carried out, the detailed content of clutch linkage 37 states.The elementary actuation gear (not shown) that on bent axle 25, is provided with meshes with elementary driven gear 34 all the time.
Through by the pressing plate 40 of clutch spring 43 application of forces, the driving plate 41 and the follower plate 42 that overlap integrally are pressed to clutch hub 39 sides.Therefore, make one rotation between clutch housing 38 and the clutch hub 39 through the frictional force between each driving plate 41 and each follower plate 42, thereby the rotation of bent axle 25 is transmitted below 28 to countershaft.
On countershaft 28, be disposed with the gear crowd 48 of driving side along its axle direction; On driving shaft 29, be disposed with the gear crowd 49 of the slave end that meshes corresponding to each gear crowd 48 gear along its axle direction.The speed change gear that is made up of gear crowd 48 and gear crowd 49 moves on countershaft 28 and driving shaft 29 through not shown axis mechanism, thus, and with the gear ratio rotation driving driving shaft 29 of expectation.
The left end side of driving shaft 29 is outstanding laterally from the left side wall 19a of gearbox 19, and package has chain 121 between the drive sprocket that is provided with on this protuberance 50 and the driven chain gear teeth 122 (with reference to Fig. 1) that are being provided with on the left surface of trailing wheel 120.
Here, in this example, gearbox 19 and the speed change gear deflection clutch device 36 sides configuration of accommodating in the portion within it.Like Fig. 6 or shown in Figure 7; Gearbox 19 is from engine center deflection right side; Between the left side wall 12a of the left side wall 19a of gearbox 19 and crankcase 12, be formed with step difference thus; In the corner that the left side wall 19a of the rear wall 12b of crankcase 12 and gearbox 19 intersects, be formed with stepped part 51, dispose clutch linkage 37 on this stepped part 51.In addition, this stepped part 51 is by wall thickening moderately.This stepped part 51 is configured to considerably be partial to the right inner side of drive sprocket 50, is formed with the gap or the interval of left and right directions between the two.
In addition, in Fig. 3 or Fig. 4 etc., though clutch circuit 52 is the straight line shape in the diagram with outer tube 53, in fact owing to be mounted to suitably crooked with the relation of circumferential component etc. and roll.
And as shown in Figure 5, at the rear side of actuating motor 18, hang on the right tiltedly rear of ending portion 54 and the upright integratedly clutch separation support 55 that is provided with tubular of the top box 19A of crankcase top 13 and speed changer case 19.In this example, clutch separation support 55 is formed on stepped part 51 with the bottom of its tubular state extends to oblique back upper place from stepped part 51 and is provided with.Clutch separation support 55 is also the same with stepped part 55, and drive sprocket 50 between be formed with the gap of left and right directions or at interval.In addition, this clutch separation support 55 has the function as the shell of clutch linkage 37.
In clutch separation support 55, can be supported with clutch release shaft 56 (with reference to Fig. 5) rotatably through not shown bearing.The lower end set of clutch release shaft 56 has cam bit as shown in Figure 7 57.The upper end portion of clutch release shaft 56 is moderately outstanding from clutch separation support 55, and its upper end is combined with clutch separation arm 58.Shown in Fig. 4 waited, the front end 58a of clutch separation arm 58 was positioned at and hangs the rear of ending portion 54, constitutes the engagement portion that engages with the front end 59 of clutch circuit 52.In addition, the upper end portion of clutch release shaft 56 is equipped with Returnning spring (not shown), and the elastic force through this Returnning spring is rotated the application of force to clutch release shaft 56, so that front end 58a is away from hanging the portion 54 of ending.
Shown in Fig. 6 and Fig. 7 etc., in the stepped part 51 of crankcase bottom 14, be formed with accommodation section 60, cam bit 57 can be contained in this accommodation section 60 rotatably.This accommodation section 60 becomes the cylindrical base of aforesaid clutch separation support 55, and in accommodation section 60, the cam bit 57 that install the lower end of clutch release shaft 56 can back and forth rotate.Here, as shown in Figure 7, in countershaft 28, axially can be inserted with to to-and-fro motion push rod 61.In addition, push rod 61 promotes clutch separation part 44 through intermediate bar 62.The left part of push rod 61 extends in the accommodation section 60, its left end and cam bit 57 butts.
Here, supplying with in the accommodation section 60 has lubricant oil, promptly has the function of being detained lubricant oil.As shown in Figure 8, be formed with the main passage 63 of lubricant oil along the overall width direction in the bottom of clutch box bottom 14, never illustrated oil pump is to these main passage 63 supplying lubricating oils.63 need portion's supplying lubricating oil to motor from the main passage.In this lubrication system, for example on the protuberance of bearing portion 27, be formed with the oily path 64 that is communicated with main passage 63, through oily path 64 lubricant oil is supplied to bearing portion 27.
In addition; On the left side wall 14b of crankcase bottom 14, be formed with the oily path 65 that is communicated with main passage 63; This oil path 65 through the oily path 66 that on fitting surface 14a, forms, is communicated with accommodation section 60 from this opening portion in the fitting surface 14a of crankcase bottom 14 upper shed.60 further formation are communicated to adjacent bearing 33 sides from the accommodation section.Mainly be in stepped part 51 (fitting surface), to have leakage of oil to prevent groove 68, this leakage of oil prevents that the lubricant oil that groove 68 is used to these oily paths 65,66,67 are supplied with from refluxing in crankcase 12.
In air-breather of the present invention, in the rear upper surface of engine case, be specially on the rear upper surface of gearbox 19, dispose vent box 22.Shown in Fig. 4 waited, vent box 22 was probably rectangular-shaped (plan view).As shown in the figure, be positioned at the rear of actuating motor 18, promptly dispose actuating motor 18 between forwardly clutch shaft 25 and the vent box 22.
Here, as shown in Figure 6, in this example, crankcase 12 reciprocally is communicated with in engine case with gearbox 19, does not have partition walls that both are separated etc.Bent axle 25 in crankcase 12 and arrangement are arranged on has extremely limited interval S between the gear crowd 48 on the countershaft 28 in the gearbox 19, both closely are provided with.Only just help the miniaturization of motor 11 here.
With reference to Fig. 5 (b), in vent box 22, dispose the air blowing portion 70 arciform or the forniciform gas leakage of D word that forms on the right side of ventilation chamber 69 (clutch device 36 sides).Corresponding this air blowing portion 70 is formed with the gas leakage importing path 71 that is communicated to ventilation chamber 69 from the right side wall 19b (with reference to Figure 11) of gearbox 19 (being specially top box 19A).That is, import path 71 and be communicated with clutch chamber side and ventilation chamber 69 through this gas leakage.
In addition, as shown in Figure 9, vent box 22 is configured in the rear upper surface of gearbox 19.In addition, as shown in the figure, bent axle 25, countershaft 28 and driving shaft 29 be configuration fitly on the fitting surface up and down of engine case.Be coated with vent cap 23 on the top of vent box 22, be connected with flexible pipe 72 on the vent cap 23.As shown in Figure 2, this flexible pipe 72 extends to the top, is connected with air filter 134.That is, in vent box 22,, given to air filter 134 through flexible pipe 72 by the gas in the gas leakage of gas-liquid separation.
And, shown in figure 11, be formed with intercommunicating pore 73 in the bottom of the right side wall 12c of crankcase 12 (being specially crankcase bottom 14), this intercommunicating pore 73 is communicated with crankcases 12 and clips the clutch chamber of this right side wall 12c disposed adjacent on the right side.Be communicated with crankcase 12 (with gearbox 19) side and clutch chamber side through this intercommunicating pore 73; Promptly; Gas leakage in the crankcase 12 is given to clutch chamber through this intercommunicating pore 73, and made this gas leakage import path 71 to give to ventilation chamber 69 from clutch chamber through gas leakage.
So, in air-breather of the present invention, shown in Fig. 9 waits, on the rear wall of engine case, be formed with the way to cycle oil 74 that is communicated with vent box 22.Gas leakage is imported to vent box 22 from crankcase 12, and the promoting the circulation of qi liquid of going forward side by side separates, and the oil after the separation is refluxed to memory section (that is, food tray 24) through way to cycle oil 74.
Specifically, on the rear wall 19c of the gearbox 19 of a part that constitutes engine case, way to cycle oil 74 is integrally formed highlightedly to the inboard of rear wall 19c.Though it is not in the rear wall 19c of gearbox 19 (top box 19A and nowel 19B), be formed with way to cycle oil 74 at above-below direction, shown in Fig. 6 or Fig. 7 etc., in this occasion, it forms the deflection front side, promptly rearward outstanding.The upper end of way to cycle oil 74 is at ventilation chamber 69 inner openings, and in addition, shown in the illustrated example of Fig. 9, its underpart is pointed to food tray 24 earth tilt and formed.
As implied above, only between crankcase 12 and gearbox 19, have the interval S of qualification, so can't on this position, partition walls be set substantially.As stated, through partition walls not being set, can make especially miniaturization on fore-and-aft direction of motor 11 at this position.When can be miniaturized, the way to cycle oil 74 through on the rear wall 19c of gearbox 19, being provided with as stated makes the oil after the gas-liquid separation reflux to food tray 24.In this occasion; Through making way to cycle oil 74 outstanding and rearward not outstanding to the inboard of gearbox 19 (front side); Can expressly make engine case side shifting and disposing forwards, thus can be on the optimum position that way to cycle oil 74 and vehicle body frame 101 do not interfere configuration motor 11.
In addition, as stated, when forming way to cycle oil 74, with the corresponding configuration of speed change gear of arranging non-maximum diameter in the speed change gear that is provided with in the gearbox 19.Fig. 6 or shown in Figure 7 for example, the gear 49A that forms minimum diameter among the gear crowd 49 who is configured to driving shaft 29 sides is corresponding.
Through the corresponding configuration of gear 49A such and minimum diameter, can prevent mutual interference, can realize the miniaturization of engine case simultaneously effectively.In this, when with the corresponding configuration of large diameter speed change gear, because ever-larger diameters, have to make way to cycle oil 74 to leave ventilation chamber 69 (in examples such as Fig. 9, retreating) and dispose.This occasion has to be provided for that upper end with way to cycle oil 74 is connected with ventilation chamber 69 that laterally (intercommunicating pore of substantially horizontal has to be embedded in dark bolt (with reference to Figure 12) at the opening portion of this intercommunicating pore in addition.When having the corresponding configuration of larger-diameter gear 49B with the gear 49A of the minimum diameter of comparing Fig. 6 for example or that kind shown in Figure 7, for avoiding the interference with gear 49B, be necessary to make way to cycle oil 74 to retreat, the amount of retreating of way to cycle oil 74 can make gearbox maximize.
In addition, above-mentioned occasion is between bent axle 25 and vent box 22, the upper surface of engine case is equipped with actuating motor 18.Also promptly constitute the rear that vent box 22 is configured in actuating motor 18.
As the actuating motor 18 of the starting drive of motor 11,, therefore be configured in the proximal most position of bent axle 25 basically owing to have the function of bent axle 25 being given driving force.On the other hand, the 2 inflator motors arranged side by side of especially smaller air displacement will make the width dimensions of the left and right directions of engine case diminish as this example, and actuating motor 18 is arranged with vent box about 22 be provided with, and come down to difficulty.To this, as stated, bent axle 25, countershaft 28 and driving shaft 29 are arranged along ground, horizontal plane front and back be provided with, guarantee the length of upper surface on fore-and-aft direction of engine case (gearbox 19).Thus, ground is arranged actuating motor 18 and vent box 22 is set before and after the upper surface of engine case, can make the motor miniaturization, and keeps the suitable configuration relation with peripheral Aided Machine, makes the advantageous configurations structure of vent box 22.
Though way to cycle oil 74 is corresponding configurations with the speed change gear of non-maximum diameter in the speed change gear as stated; But in other words; It is configured to: see that from the side at least 1 speed change gear that is provided with gearbox 19 interior arrangements is overlapping; And between the set bearing in the two side of gearbox 19, in the zone, be sandwiched in speed change gear each other.
Fig. 6 or shown in Figure 7 for example, with respect to the gear 49A of the minimum diameter of way to cycle oil 74 corresponding settings, disposed adjacent has the gear 49B that has larger diameter than gear 49A.Shown in figure 10, see that from the side way to cycle oil 74 and gear 49B are overlapping.In addition, shown in Fig. 7 waited, in the bearing 32 of driving shaft 29 and the zone between the bearing 33, way to cycle oil 74 was sandwiched between the large diameter gear 49B and gear 49C adjacent with gear 49A.
As stated; On the rear wall of gearbox 19; Effectively utilize the interval that forms between the gear crowd 49 and dispose way to cycle oil 74 as close as possiblely, can realize the miniaturization and of motor thus, and can reduce fuel cost thus and improve vehicle operating property.Further, not only for motor,, and can improve operational stability even if car body integral body also can realize miniaturization and.In addition, need not be used to form the unnecessary parts of way to cycle oil 74 or to the processing of these parts etc., therefore can cut down processing, assembling procedure, further cutting down cost.
Though more than the present invention and various example are illustrated in the lump, the present invention is not limited in these examples, can implement within the scope of the invention the change etc.
In above-mentioned example, the gear crowd 48,49 of configuration is not limited in the structure of illustrated example in gearbox 19, and other configuration structure also can be arranged.
Claims (5)
1. the air-breather of a motorcycle engine, this motorcycle engine has engine case, and this engine case comprises crankcase that disposes bent axle and the gearbox that disposes a plurality of speed change gears, and this air-breather is characterised in that, comprising:
Vent box, it is disposed at the rear upper surface of said engine case;
Way to cycle oil, it is formed at the rear wall of said engine case, is communicated with said vent box,
Wherein, said vent box is directed to said vent box with gas leakage from said crankcase and carries out gas-liquid separation, and separated oil is refluxed to food tray through said way to cycle oil.
2. the air-breather of motorcycle engine as claimed in claim 1; It is characterized in that; Said crankcase and said gearbox form in said engine case and are interconnected; And said way to cycle oil is formed on the rear wall of said gearbox of a part that constitutes said engine case, and side-prominent in said gearbox.
3. according to claim 1 or claim 2 the air-breather of motorcycle engine is characterized in that the gear mesh of non-maximum diameter should dispose in all speed change gears of being arranged in said way to cycle oil and the said gearbox.
4. the air-breather of motorcycle engine as claimed in claim 3; It is characterized in that; Also have the actuating motor that is installed on the said engine case upper surface, this actuating motor is configured in between upwardly extending cylinder of said engine case and the said vent box.
5. the air-breather of motorcycle engine as claimed in claim 3 is characterized in that, it is overlapping to see that from the side said way to cycle oil is configured to and is arranged at least one interior speed change gear of said gearbox.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009133392A JP5568890B2 (en) | 2009-06-02 | 2009-06-02 | Oil breather device for motorcycle engines |
| JP2009-133392 | 2009-06-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101907008A CN101907008A (en) | 2010-12-08 |
| CN101907008B true CN101907008B (en) | 2012-07-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010200379 Expired - Fee Related CN101907008B (en) | 2009-06-02 | 2010-06-02 | Motorcycle engine ventilating device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5568890B2 (en) |
| CN (1) | CN101907008B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5706249B2 (en) * | 2011-06-29 | 2015-04-22 | 本田技研工業株式会社 | Electronic throttle arrangement structure for vehicles |
| JP5932382B2 (en) * | 2012-02-16 | 2016-06-08 | 本田技研工業株式会社 | Saddle riding vehicle |
| JP5966708B2 (en) * | 2012-07-13 | 2016-08-10 | スズキ株式会社 | Breather device for motorcycle engine |
| EP2730774B1 (en) | 2012-11-08 | 2016-11-09 | Suzuki Motor Corporation | Engine unit of motorcycle |
| JP6197279B2 (en) * | 2012-11-08 | 2017-09-20 | スズキ株式会社 | Engine unit for motorcycle |
| CN103278075B (en) * | 2013-05-29 | 2016-12-28 | 苏州创丰精密五金有限公司 | A kind of welding product angle detection fixture |
| JP5850890B2 (en) * | 2013-08-02 | 2016-02-03 | 本田技研工業株式会社 | Breather structure of internal combustion engine |
| CN110512685A (en) * | 2019-09-02 | 2019-11-29 | 沃得重工(中国)有限公司 | The dynamical system of small-sized wheel digging machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2010281223A (en) | 2010-12-16 |
| JP5568890B2 (en) | 2014-08-13 |
| CN101907008A (en) | 2010-12-08 |
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