CN1247936A

CN1247936A - V-shape internal combustion engine for vehicle

Info

Publication number: CN1247936A
Application number: CN 99118579
Authority: CN
Inventors: 野村明史; 神户敬司
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1998-09-14
Filing date: 1999-09-09
Publication date: 2000-03-22
Anticipated expiration: 2019-09-09
Also published as: JP4021069B2; DE69910136T2; JP2000087756A; CN1113159C; EP0987414B1; EP0987414A2; EP0987414A3; DE69910136D1

Abstract

To provide a V-type internal combustion engine for a vehicle, which is capable of connecting a primary transmission unit, a starting transmission unit, first and second timing transmission units, and a generator to a crank shaft in a reasonable layout, thereby improving the assembling characteristic and the maintenance characteristic and maintaining a good balance in weight between right and left sides of a vehicular body when the engine is mounted on the vehicle. First and second timing transmission units 461 and 462 adjacent to each other in the axial direction, and a generator 30 adjacent to the outer side of the first and second timing transmission units 461 and 462 are connected to one end portion, projecting outwardly from a first journal 17, of a crank shaft 15, and a primary transmission unit 54 and a starting transmission unit 94 are connected to the other end, projecting outwardly from a second journal 18, of the crank shaft 15.

Description

V-shape internal combustion engine for vehicle

The present invention relates to be equipped on the V-shape internal combustion engine for vehicle on the vehicles such as two-wheeled motor vehicle, particularly relate to a kind of like this improvement of V-shape internal combustion engine for vehicle, in this V-type internal combustion engine, bent axle across relative the 1st and the 2nd main journal of its crank portion respectively via bearings in crankcase, being that open the 1st combination of center V font and the 2nd is connected and is arranged at crankcase with this bent axle, on bent axle, connecting the transmission device of its transmission of power to clutch, the driving force of actuating motor is delivered to the starting transmission gear of bent axle, drive the 1st and the 2nd timing transmission device of the 1st and the 2nd combined valve driving cam axle, and generator, make the left and right directions configuration of bent axle when adorning onboard towards car body.

In the prior art, as such V-shape internal combustion engine for vehicle, bent axle on the outstanding end in the 1st main journal outside, connecting the 1st timing transmission device, starting transmission gear and generator, be known (reference example such as Japan Patent disclose clear with 64-83912 communique) on the outstanding the other end in the 2nd main journal outside, connecting the 2nd timing transmission device and transmission device person of bent axle.

In the above-mentioned formation of prior art, owing to the 1st and the 2nd timing transmission device is connected in the two ends of bent axle, so their assembling is good hardly, in addition, because disposing starting transmission gear and generator in the outside of a side timing transmission device respectively, and disposing transmission device No. one time, so in the occasion of carrying out each timing transmission device maintenance in the outside of the opposing party's timing transmission device, be necessary to take off all things in these outsides, the maintenance extreme difference.

The present invention makes in light of this situation, its purpose is to provide a kind of aforementioned vehicle V-type internal combustion engine, this V-type internal combustion engine can be connected in bent axle to transmission device, starting transmission gear, the 1st and the 2nd timing transmission device and a generator according to reasonable configuration, the assembling of the 1st and the 2nd timing transmission device and maintenance are good, and when adorning onboard, can seek the balance of car body left and right sides weight.

To achieve these goals, the invention provides a kind of V-shape internal combustion engine for vehicle, bent axle across relative the 1st and the 2nd main journal of its crank portion respectively via bearings in crankcase, being that open the 1st combination of center V font and the 2nd is connected and is arranged at crankcase with this bent axle, on bent axle, connecting the transmission device of its transmission of power to clutch, the driving force of actuating motor is delivered to the starting transmission gear of bent axle, drive the 1st and the 2nd timing transmission device of the 1st and the 2nd combined valve driving cam axle, and generator, make the left and right directions configuration of bent axle when adorning onboard towards car body, it the 1st is characterised in that, axially the 1st and the 2nd timing transmission device of adjacency that on an end outstanding outside the 1st main journal, connecting mutually at bent axle, generator with the outside that is adjacent to them, in addition, on the outstanding the other end in the 2nd main journal outside, connecting transmission device and starting transmission gear.

According to this one the 1st feature, can be assembled into the 1st and the 2nd timing transmission device one end of bent axle at one stroke, their assembling is good.This is external to carry out when the maintenance of the 1st and the 2nd timing transmission device, as long as the generator in their outside is taken off from bent axle, just can carry out its maintenance at an easy rate, to other things without any interference.And, by the adjacency configuration of generator, being in operation to two timing transmission devices, the oily foam that is splashed from two timing transmission devices hangs on the generator, can cool off it effectively.

In addition, because the side at crankcase disposes the 1st, the 2nd timing transmission device and generator, and at opposite side configuration starting transmission gear, transmission device and clutch, so the weight balancing of crankcase both sides is good, thereby when adorning onboard, can realize the weight balancing about car body at an easy rate.

The present invention in addition, except above-mentioned feature, it the 2nd is characterised in that, constitute crankcase by the 1st and the 2nd half chests body of being cut apart (about cut apart) with the face of the axis normal of bent axle, the the 1st and the 2nd main journal of bent axle is engaged in respectively on these the 1st and the 2nd half chests bodies via ball bearing, the external diameter of a driving timing sprocket end that is fixed in bent axle, the 1st and the 2nd timing transmission device is set for the internal diameter of the ball bearing that is cooperated less than the 1st main journal.

According to this one the 2nd feature because the driving timing sprocket of the 1st, the 2nd timing transmission device is fixed in an end of bent axle, so can crankshaft installed about in the crankcase cut apart.Thereby, when bent axle is monomer driving sprocket wheel be mounted for possibility, particularly, by being pressed into the occasion that fixes, operation is good.

And then, the present invention is except the 1st or the 2nd feature, it the 3rd is characterised in that, a transmission device is configured in compared with axle head one side of moving the more close bent axle of transmission device, the pump driver gear that the actuation gear of No. one transmission devices therewith is meshed is fixed on the intermediate portion that is bearing in the pump shaft on the crankcase with bent axle abreast, being connected in an end of this pump shaft along the juxtaposed lubrication oil pump of radial direction, in addition the cooling water pump is connected in its other end with the overrunning clutch of starting transmission gear.

According to this one the 3rd feature, the actuation gear of a transmission device is used for the driving of oil pump and water pump, driving with them is shared simultaneously, can help the formation of motor to simplify whereby, and oil pump is adjacent to overrunning clutch configuration along radial direction, whereby, because the arranged coaxial of oil pump and water pump, the horizontal width that also can suppress motor increases.

Accompanying drawing is simply described as follows:

Fig. 1 is the side view that has carried the two-wheeled motor vehicle of V-type internal combustion engine of the present invention.

Fig. 2 is the side view of above-mentioned internal-combustion engine.

Fig. 3 is the amplification longitudinal section along the 3-3 line intercepting of Fig. 2.

Fig. 4 is the sectional view along the 4-4 line intercepting of Fig. 3.

Fig. 5 is the sectional view along the 5-5 line intercepting of Fig. 2.

Fig. 6 is the cooling water system figure of above-mentioned internal-combustion engine.

Fig. 7 is the sectional view along the 7-7 line intercepting of Fig. 2.

Fig. 8 is the front and rear timing transmission device enlarged view on every side of Fig. 3.

Fig. 9 is the variable-speed motor enlarged view on every side of Fig. 3.

Figure 10 is the exhaust system plan view on every side of above-mentioned internal-combustion engine.

Figure 11 is the cylinder head plan view of the rear portion combination of above-mentioned internal-combustion engine.

Figure 12 be Fig. 9 12 to view.

One embodiment of the present of invention shown in reference to the accompanying drawings illustrate and implement form of the present invention below.

Fig. 1 is the side view that has carried the two-wheeled motor vehicle of V-type internal combustion engine of the present invention, Fig. 2 is the side view of above-mentioned internal-combustion engine, Fig. 3 is the amplification longitudinal section along the 3-3 line intercepting of Fig. 2, Fig. 4 is the sectional view along the 4-4 line intercepting of Fig. 3, Fig. 5 is the sectional view along the 5-5 line intercepting of Fig. 2, Fig. 6 is the cooling water system figure of above-mentioned internal-combustion engine, Fig. 7 is the sectional view along the 7-7 line intercepting of Fig. 2, Fig. 8 is the front and rear timing transmission device enlarged view on every side of Fig. 3, Fig. 9 is the variable-speed motor enlarged view on every side of Fig. 3, Figure 10 is the exhaust system plan view on every side of above-mentioned internal-combustion engine, Figure 11 is the cylinder head plan view of the rear portion combination of above-mentioned internal-combustion engine, Figure 12 be Fig. 9 12 to view.

Moreover so-called all around in the explanation is meant that the car body with two-wheeled motor vehicle is the benchmark person.[integral body of two-wheeled motor vehicle constitutes (with reference to Fig. 1, Fig. 2)]

At the front end of the vehicle frame 1 of two-wheeled motor vehicle M, can connect the front fork that supports front-wheel (all not shown go out) with turning to.In addition, can connect the back vent 3 that supports trailing wheel 2 with swinging up and down, between each rearward end of this back vent 3 and vehicle frame 1, clamp posterior bumper 7 at the rear portion of vehicle frame 1.

At the intermediate portion of vehicle frame 1, carrying and having front and rear combination 4 ₁, 4 ₂V-type internal combustion engine E, fuel tank 5 is installed simultaneously above it.And then, at the rear portion of vehicle frame 1, be connected in fuel tank 5 the rear end main vehicle seat 6a and secondary vehicle seat 6b be installed.

Connect the chain-driven unit 10 between the wheel hub of the output shaft 97 that is connected the variable-speed motor 8 that is provided with above-mentioned internal-combustion engine E and trailing wheel 2, be configured in the left side of trailing wheel 2.Actuating motor 11 is configured in the front lower place of bent axle 15.

Front and rear combination 4 at internal-combustion engine E ₁, 4 ₂Between paddy portion 28 in, disposing and the corresponding front and rear Carburetor 12 that combination connected ₁, 12 ₂Be connected to anterior combination 4 in addition ₁Front and rear portion combination 4 ₂The anterior outlet pipe 13 at rear portion ₁With rear part exhaust pipe 13 ₂, converge and be connected in and clip the opposite side that trailing wheel 2 is configured in aforementioned chain-driven unit 10, be i.e. the front end of the shared exhaust silencer 14 on the right side of trailing wheel.[the overall formation of internal-combustion engine (with reference to Fig. 2, Fig. 3, Fig. 5, Fig. 8)]

The front portion combination 4 of internal-combustion engine E ₁With rear portion combination 4 ₂, 90 ° are opened and the configuration of ground, front and back around the bent axle 15 that disposes along left and right directions.Bent axle 15 has the single crank portion 16 that crank pin 16a is arranged and is adjacent to the pairing left and right main journal 17,18 at its two ends, and its main journal 17,18 is bearing on the crankcase 21 via ball bearing 19,20 respectively.

Front and rear combination 4 ₁, 4 ₂Have the cylinder block 22 on inclined-plane, front and back that bent axle 15 is engaged in the chevron top of above-mentioned crankcase 21 respectively ₁, 22 ₂, and be engaged in the cylinder head 23 of their upper end ₁, 23 ₂, in each cylinder block 22 ₁, 22 ₂With cylinder head 23 ₁, 23 ₂The a series of water jackets 24 of middle formation ₁, 24 ₂

Cooperate each cylinder block 22 of packing into ₁, 22 ₂Cylinder-bore 25 ₁, 25 ₂Piston 26 ₁, 26 ₂Via connecting rod 27 ₁, 27 ₂Be connected in above-mentioned crank pin 16a.At this moment, the rear portion combination 4 ₂Connecting rod 27 ₂Be adjacent to above-mentioned anterior combination 4 ₁Connecting rod 27 ₁Left and be configured on the above-mentioned crank pin 16a, according to these connecting rods 27 ₁, 27 ₂The amount of the staggering S (Fig. 8) of left and right directions, make rear portion combination 4 ₂Axis with respect to front portion combination 4 ₁Axis stagger left.

As shown in Figure 5, on the outstanding right-hand member in 18 more laterals of main journal to the right of bent axle 15, from its inboard actuation gear 54a that the overrunning clutch 53 of starting transmission gear 94 is installed successively and is connected in a transmission device 54 of clutch 100, configuration simultaneously with being adjacent to each other.At this moment, the external member of overrunning clutch 53 combines with bent axle 15 splines, is fixedly installing starting gear 52 on its inner member.Actuation gear 54a and bent axle 15 bonds are closed.

In addition as shown in Figure 8, on the outstanding left end in 17 more laterals of main journal left of bent axle 15, from its inboard be installed with successively to drive anteriorly make up 4 ₁Valve driving cam axle 41 ₁Anterior timing transmission device 46 ₁ Driving timing sprocket 42 ₁, drive the rear portion and make up 42 valve driving cam axle 41 ₂Rear portion timing transmission device 46 ₂ Driving timing sprocket 42 ₂, and the rotor 31 of generator 30, configuration simultaneously with being adjacent to each other.At this moment, rotor 31 closes with bent axle 15 bonds.Relevant two

drive timing sprocket

42 ₁, 42 ₂Mounting structure will address hereinafter.

Round stator 32 rotor 31, generator 30, be fixed on the inwall of the left cap 33 that engages with the left side of crankcase 21.

Form projection 35 on the position of above-mentioned rotor 31 outer circumferential faces, a projection 35 crankshaft position sensor 36 of coordinating to detect the rotational position of bent axle 15 is fixed in the left side of crankcase 21 therewith.The output signal of this crankshaft position sensor 36 is as the control signal of ignition mechanism or the input signal of tachometer.

On bent axle 15 and right-hand members generator 30 opposite sides, be adjacent to right side main journal 18 and supporting starting gear 52, and then be adjacent to these starting gear 52 bonds and closing actuation gear 54a one time via overrunning clutch 53.

If constitute as described above, then can assemble front and rear timing transmission device 46 at one stroke in left end one side of

bent axle

15 ₁, 46 ₂, their assembling has become well.This external front and rear timing transmission device 46 that carries out ₁, 46 ₂Maintenance when, as long as the generator 30 in their outside is taken off from bent axle 15, just can carry out its maintenance at an easy rate, to other things without any interference.And, by 30 pairs of two timing transmission devices 46 of generator ₁, 46 ₂In abutting connection with the configuration, be in operation, because from two

timing transmission devices

46 ₁, 46 ₂The oily foam that is splashed hangs on the generator 30, so can cool off it effectively.

In addition, because at the left side of crankcase 21 configuration front and rear

timing transmission device

46 ₁, 46 ₂With generator 30, and at opposite side configuration starting transmission gear 94, a transmission device 54 and a clutch 100, so the weight balancing of crankcase 21 both sides is good, thereby when being contained on the vehicle frame 1, can realize the left and right sides weight balancing of two-wheeled motor vehicle M at an easy rate.[valve power train (with reference to Fig. 2～Fig. 4, Fig. 8, Fig. 9)]

In each combination 4 ₁, 4 ₂Cylinder head 23 ₁, 23 ₂On, Aspirating valves 37 is being set ₁, 37 ₂With outlet valve 38 ₁, 38 ₂, make Aspirating valves 37 ₁, 37 ₂Near two combinations 4 ₁, 4 ₂Between paddy portion 28.In addition, at each cylinder head 23 ₁, 23 ₂On, respectively via ball bearing 50,50 ' and bent axle 15 supporting camshaft 41 abreast ₁, 41 ₂Two ends,

camshaft

41 ₁, 41 ₂Via valve rocker 39 ₁, 39 ₂, 40 ₁, 40 ₂The suction of driven for opening and closing correspondence, outlet valve 37 ₁, 37 ₂, 38 ₁, 38 ₂And, at the driving timing sprocket 42 of the left end that is fixed in

bent axle

15 ₁, 42 ₂And be fixed in and respectively make up 4 ₁, 4 ₂Camshaft 41 ₁, 41 ₂The driven timing sprocket 43 of left end ₁, 43 ₂On, around hanging timing chain 44 ₁, 44 ₂Above-mentioned two

drive timing sprocket

42 ₁, 42 ₂, have the outer end of the left side main journal 17 that is adjacent to bent axle 15 and the shared axle sleeve 45 that is pressed into.

So, anterior combination 4 ₁ Driving timing sprocket 42 ₁, timing chain 44 ₁With driven timing sprocket 43 ₁, constitute the camshaft 41 that the rotational delay to 2 of bent axle 15/1 is delivered to correspondence ₁Anterior timing transmission device 46 ₁, they are configured in anterior combination 4 ₁, the anterior timing Transmission Room 47 that on the sidewall of generator 30 1 sides, forms ₁In.The rear portion combination 4 in addition ₂ Driving timing sprocket 42 ₂, timing chain 44 ₂With driven timing sprocket 43 ₂, constitute the camshaft 41 that the rotational delay to 2 of bent axle 15/1 is delivered to correspondence ₂Rear portion timing transmission device 46 ₂, they also are to be configured in rear portion combination 4 ₂, the rear portion timing Transmission Room 47 that on the sidewall of generator 30 1 sides, forms ₂In.

At this moment, rear portion timing transmission device 46 ₂Be configured in anterior timing transmission device 46 ₁Axial more lateral, i.e. generator 30 1 sides.

Bent axle 15 is rotation in the counterclockwise direction shown in arrow R among Fig. 4, thereby, each timing chain 44 ₁, 44 ₂Rear side become slack-side.Should give certain force of strain to these slack-side, at each timing chain 44 ₁, 44 ₂Slack-side, contacting sliding freely and swinging the earth's axis freely and be supported on arc chain tensioning device 48 on the crankcase 21 ₁, 48 ₂, with certain load these chain tensioning devices 48 ₁, 48 ₂The longitudinal direction central part to the timing chain 44 of correspondence ₁, 44 ₂The known stretcher tappet 49 of pushing ₁, 49 ₂, be installed on respectively in each combination 4 by bolt 109 ₁, 4 ₂Cylinder block 22 ₁, 22 ₂On the attachment face that forms on the rear surface.

Crankcase 21 is divided into left half chests body 21a and right half chests body 21b at its right and left central part place, the outer ring of aforementioned ball bearing 19,20 is installed on these half chests bodies in advance by gently being pressed into, two half chests body 21a, 21b in conjunction with the time, the left and right sides main journal 17,18 of bent axle 15 gently is pressed into the inner ring of above-mentioned ball bearing 19,20 respectively, but this moment, drive timing sprocket 42 ₁, 42 ₂Outside diameter d ₁Be configured to be slightly smaller than the inner diameter d of the inner ring of above-mentioned ball bearing 19 ₂, shared axle sleeve 45 is pressed into the driving timing sprocket 42 of bent axle 15 so that be adjacent to the outside of left side

main journal

17 ₁, 42 ₂Can pass the inner ring of left side ball bearing 19.Thereby two drive timing sprocket 42 when bent axle 15 is monomer ₁, 42 ₂Being pressed into of axle sleeve 45 become possibility, can carry out it at an easy rate and be pressed into operation.In addition, by half chests body 21a, 21b about ball bearing 19,20 gently is pressed into and about main journal 17,18, can be in engine operation, suppress the vibration of ball bearing 19,20, realize reducing noise.[exhaust system (with reference to Fig. 2, Figure 10 and Figure 11)]

The relief opening 51 of anterior combination 41 ₁Outlet, be opened on its cylinder head 23 ₁Front surface on, anterior outlet pipe 13 ₁Upstream extremity be connected in this opening.In addition, the rear portion combination 4 ₂Relief opening 51 ₂Outlet, be opened on its cylinder head 23 ₂The rear portion, with rear portion timing transmission device 46 ₂On the right flank of opposite side, rear part exhaust pipe 13 ₂Upstream extremity be connected in this opening.

Anterior outlet pipe 13 ₁With rear part exhaust pipe 13 ₂, all be up and down abreast pipe arrangement in front and rear chain-driven

unit

46 ₁, 46 ₂The right side of the internal-combustion engine E of opposite side is converged the exhaust silencer 14 that is connected in the right side that is configured in trailing wheel 2 to downstream simultaneously.

So, because as mentioned above front and rear

timing transmission device

46 ₁, 46 ₂The concentrated area be configured in internal-combustion engine E, rear portion combination 4 ₂To front portion combination 4 ₁A side of the direction side that staggers, on the other hand, front and rear outlet pipe 13 ₁, 13 ₂Concentrate the opposite side of pipe arrangement up and down abreast, so though avoided two timing transmission devices 46 at an easy rate at internal-combustion engine E ₁, 46 ₂With two outlet pipes 13 ₁, 13 ₂Interference, but can be comprising two outlet pipes 13 ₁, 13 ₂Do one's utmost to do narrow at the overall width of interior internal-combustion engine E.

In addition, because the rear part exhaust pipe 13 of pipe arrangement on the right side of two-wheeled motor vehicle M ₂Be connected in and be opened on rear portion combination 4 ₂Cylinder head 23 ₂The rear portion right flank on relief opening 51 ₂So, can reduce rear part exhaust pipe 13 ₂Curved part, reduce its pipe resistance, help the raising of output performance.[power train (with reference to Fig. 2, Fig. 3 and Fig. 9)]

On crankcase 21, integrally form to rear portion combination 4 ₂The outstanding gearbox portion 95 in bottom, in this gearbox portion 95, after being right after bent axle 15, accommodate the input shaft 96 and the output shaft 97 of variable-speed motor 8 before and after the ground in parallel side by side, their two ends are bearing on the left and right sides wall of gearbox portion 95 via a pair of ball bearing 98,98 ', 99,99 ' respectively.Right-hand member at its input shaft 96, spline is in conjunction with the inner member 101 of the clutch 100 that is covered by the right cap 34 of the right flank that is engaged in crankcase 21, on the inner of its external member 102, be installed with and be meshed with an aforementioned actuation gear 54a and constitute a driven gear 54b of a transmission device 54.97 of this external input shaft 96 and output shafts selectively are being provided with multistage (being 5 grades in the illustrated embodiment) change gear train G ₁～G ₅

Supporting the left side wall 95a (with reference to Fig. 9) of gearbox portion 95 of the left end of input shaft 96 and output shaft 97, from rear portion combination 4 ₂ Timing transmission device 46 ₂Stagger to the right and a bit form.Thereby, the rear portion is being made up 4 ₂ Timing transmission device 46 ₂In stretcher tappet 49 ₂Be installed in rear portion combination 4 ₂Cylinder block 22 ₂Occasion on the rear surface can be avoided the interference with gearbox portion 95.

Particularly, because rear portion combination 4 ₂ Timing transmission device 46 ₂Be configured in anterior combination 4 ₁ Timing transmission device 46 ₁The outside, promptly the left side, so gearbox portion 95 is suppressed to inferior limit with respect to crankcase 21 amount of staggering to the right, can realize the miniaturization of internal-combustion engine E.[vehicle speed sensor (with reference to Fig. 2, Fig. 9 and Figure 12)]

On the rear wall of gearbox portion 95, be provided with mounting hole 103, make detection unit 105a pass the vehicle speed sensor 105 that stretches in the gearbox portion 95 in this hole 103 and be fixed in the rear wall of gearbox portion 95 by means of bolt 110.This vehicle speed sensor 105 is configured to make its detection unit 105a facing to high-grade driven gear, promptly high-grade train of gearings G ₅The tooth top of driven gear 104.

High-grade driven gear 104, spline fitted is in output shaft 97, and double as is set up 2 grades of train of gearings G by being moved to the left ₂Change gear, even, can not make the periphery of this gear break away from the detection range of vehicle speed sensor 105 because it moves.Vehicle speed sensor 105 is to the output of unillustrated computer and near the corresponding signal of the number of teeth of the high-grade driven gear 104 that skims over the front of its detection unit, in this computer, come the computing speed of a motor vehicle according to input signal, be presented on the speed of a motor vehicle meter on the unillustrated instrument panel of two-wheeled motor vehicle M (not shown go out).

So, vehicle speed sensor 105, because being installed on the rear wall of gearbox portion 95 as the vehicle speed sensor 105 that the speed of a motor vehicle detects, so it installs the rear portion combination 4 of much less inclining to gearbox portion 95 1 rear flank with the rotating speed with the high-grade driven gear 104 of output shaft 97 rotation all the time ₂, even the rear part exhaust pipe 13 that install at its rear portion ₂Also can not be subjected to anyly to carry out with bothering.

On the rear surface of gearbox portion 95, integrally form the fin 106 be trapped among below the vehicle speed sensor 105, have the through hole 107 that the lead-in wire 108 of vehicle speed sensor 105 passes in the central authorities of this fin.

In addition as shown in Figure 2, respectively integrally the back of gearbox portion 95 outstanding be provided with pairing left and right, on next group earrings portion 112 ₁, 112 ₂, in addition, the outstanding pairing left and right earrings portion 112 that is provided with in the front of crankcase 21 ₃, when internal-combustion engine E is contained on the vehicle frame 1, these earrings portions 112 ₁, 112 ₂, 112 ₃Engage with vehicle frame 1.Utilize the two groups of earrings portions 112 in its rear portion ₁, 112 ₂Dead angles on every side, gearbox portion 95 rears are provided with aforementioned vehicle speed sensor 105, can improve space availability ratio.

So; above-mentioned fin 106 performance protection vehicle speed sensor 105 in the advancing of two-wheeled motor vehicle M exempts from from the function of the evil of the sudden gravel of bottom; in addition, lead-in wire 108 through holes that pass 107 are also as invading the rainwater in the fin 106, the exhaust port performance function of scouring water.[lubricated and cooling system (with reference to Fig. 2, Fig. 3, Fig. 5 and Fig. 6)]

As shown in Fig. 2, Fig. 3 and Fig. 5, be incorporated at key on the actuation gear 54a of right-hand member of bent axle 15, meshing pump driver gear 56 and a driven gear 54b at two of its circumferencial direction different positions.

Pump driver gear 56 closes with pump shaft 61 bonds that are bearing in the right cap 34 of the right side that is engaged in crankcase 21 via bearing 86.This pump shaft 61 is parallel with bent axle 15, is configured in the front upper place of bent axle.

On the inner of this pump shaft 61, fixing lubricated internal rotor 58 with gerotor type oil pump 57, on the outer end, fixing the impeller 63 of cooling water pump 62 in addition.Pump case 60 screws of accommodating the external rotor 59 of oil pump 57 are fixed in the next door 65 of the fulcrum ball bearing 20 of crankcase 21.In addition, the pump case 64 of accommodating impeller 63 leans on bolt 87 to be fixed in the outer side surface of right cap.So, oil pump 57 and water pump 62 are configured in the front upper place of bent axle 15 coaxially, and in addition, oil pump 57 (looks that example is like that at grade in abutting connection with ground as shown) along radial direction and aforementioned overrunning clutch in abutting connection with ground and is located on the crankcase 21.

On the suction port of oil pump 57, manage 68 strainers 67 (with reference to Fig. 2) that are connected in the oil sump portion 66 that is located at crankcase 21 bottoms via sucting, in addition, delivery outlet is communicated to bent axle 15 and each combination 4 via fuel feeding road 69 ₁, 4 ₂Camshaft 41 ₁, 41 ₂And other lubricated portions.

On fuel feeding road 69 midway, clamping be positioned at bent axle 15 substantially directly over oil purifier 70.This oil purifier 70 is installed on right cap 34 in the formed filter chamber 71, and the lid 72 that seals the open ports of this chamber 71 is fixed in right cap 34.In filter chamber 71, oil purifier 70 outer Monday side upstream chamber 71a be communicated to the delivery outlet of oil pump 57 via the upstream portion 69a on formed fuel feeding road 69 in crankcase 21, in addition, oil purifier 70 interior Monday side the 71b of room of outlet be communicated to two the oil circuit 69b of branch, the 69c on formed fuel feeding road 69 in lid 72, the oil circuit 69b of branch on one side is communicated to the lubricated portion 73 of bent axle 15 systems, the oil circuit 69c of branch of another side further is branched off into the oil circuit 69d of branch, the 69e of front and back at the crankcase 21 and the place, mating face of right cap 34, be communicated to front and rear combination 4 ₁, 4 ₂Comprise each

camshaft

41 ₁, 41 ₂Lubricated portion 74 in interior valve power train ₁, 74 ₂

Thereby, if along with the rotation of bent axle 15, oil pump 57 is driven via pump driver gear 56 and pump shaft 61, and then the fluid in the oil sump portion 66 is sucted and be pressed to filter chamber 71 from strainer 67, after oil purifier 70 filtrations, be fed into lubricated portion 73 and each combination 4 of bent axle 15 systems ₁, 4 ₂The lubricated portion 74 of valve power train ₁, 74 ₂, can lubricate them.And, by above-mentioned configuration, the formation on oil pump 57, filter chamber 71, oil purifier 70 and fuel feeding road 69, having done one's utmost to shorten the length on fuel feeding road 69, can constitute symmetrically substantially simultaneously front and rear combination 4 ₁, 4 ₂Lubricating system, lubricated equably two combinations 4 ₁, 4 ₂Become possibility.

In oil purifier 70, be provided with the relief valve 70b that when its filter core 70a stops up, makes short circuit between upstream chamber 71a and the 71b of room of outlet.

On the other hand, in water pump 62, as shown in Figure 6, its suction pipe 75 is via water pipe 77 ₁Be connected to the outlet of radiator 29 (being arranged on the front of internal-combustion engine E as shown in FIG.), output tube 76 is via water pipe 77 ₂Be connected to anterior combination 4 ₁Water jacket 24 ₁The bottom.

As previously mentioned, the front and rear combination 4 ₁, 4 ₂In each cylinder block 22 ₁, 22 ₂With cylinder head 23 ₁, 23 ₂In have a series of water jackets 24 ₁, 24 ₂, in addition, in rear portion combination 4 ₂Cylinder head 23 ₂In, be formed on the chamber, interflow 80 of its open-front, water jacket 24 ₂Top be communicated in this one the interflow chamber 80.

Forwardly with rear portion combination 4 ₁, 4 ₂Face-off face on, integrally outstanding the setting and corresponding water jacket 24 ₁, 24 ₂The bottom joint 78 that is connected of bottom ₁, 78 ₂, the bottom that is configured in paddy portion 28 is communicated with water pipe 77 ₃Two ends be connected in these joints 78 ₁, 78 ₂

In addition, forwardly make up 4 ₁The rear surface on, integrally form and its water jacket 23 ₁The top sub 79 that is connected of top ₁, and then in rear portion combination 4 ₂Cylinder head 23 ₂On the lower surface, screw is being fixed the top sub 79 that is connected with chamber 80, interflow ₂Flange, the rear portion that is configured in the paddy portion 28 is communicated with water pipe 77 ₄Two ends be connected in these top subs 79 ₁, 79 ₂

In chamber 80, interflow, thermostat 82 is being set, simultaneously, while the duct thermostat lid 81 that keeps this thermostat to seal the opened portion of chamber 80, interflow is engaged in cylinder head 23 ₂Front surface.

On duct thermostat lid 81, integrally form the outlet connection 83 of the outlet that is connected in thermostat 82, this outlet connection 83 is via water pipe 77 ₅Be connected to the import of radiator 29.

In addition, at top sub 79 ₂On, integrally forming the bypass outlet connection 84 that is communicated to chamber 80, interflow via access 84 ', this one side pass-out mouth joint 84 makes up 4 with the rear portion successively by means of Bypass hose 85 ₂Carburetor 12 ₂Hot room, anterior combination 4 ₁Carburetor 12 ₁Hot room and aforementioned suction pipe 75 be connected.Bypass outlet connection 84 is formed the diameter enough littler than the outlet connection 83 of duct thermostat lid 81.

Thermostat 82, when the water temperature in chamber 80, interflow is lower than set point of temperature 81 blocking-up are covered in chamber 80, interflow and duct thermostat, open the access 84 ' of 84 of chamber 80, interflow and bypass outlet connections simultaneously, in addition, when its water temperature one becomes above set point of temperature, just chamber 80, interflow is communicated with 81 on duct thermostat lid, closes above-mentioned access 84 ' simultaneously.

Thereby, along with the rotation of bent axle 15, when water pump 62 is driven via pump driver gear 56 and pump shaft 61, if the water temperature of chamber 80, interflow is lower, then because thermostat 82 covers 81 blocking-up to chamber 80, interflow and duct thermostat, open access 84 ' simultaneously, so cooling water at first is sent to anterior combination 4 from output tube 76 by means of water pump 62 ₁Water jacket 24 ₁, then the only about half of of this cooling water directly is communicated with water pipe 77 via the bottom ₃Flow to rear portion combination 4 ₂Water jacket 24 ₂Then, flow through anterior combination 4 ₁Water jacket 24 ₁Cooling water be communicated with water pipe 77 via top ₄Flow to rear portion combination 4 ₂Chamber, interflow 80, and flow through rear portion combination 4 ₂Water jacket 24 ₂Cooling water interflow, flow out bypass outlet connection 84 from chamber 80, interflow via access 84 ', successively via the Carburetor 12 at rear portion ₂Carburetor 12 with the front portion ₁Hot room, turn back to the suction pipe 75 of water pump 62, after, repeat same circulation.Can promote the warming-up of internal-combustion engine E by this of cooling water not via the circulation of radiator 29, give Carburetor 12 simultaneously ₁, 12 ₂Heat, can prevent freezing around the fuel nozzle of these Carburetors.

If the warming-up of internal-combustion engine E progress flows through two combinations 4 ₁, 4 ₂Water jacket 24 ₁, 24 ₂And the water temperature of the cooling water at interflow surpasses specified value in chamber 80, interflow, then owing to thermostat 82 is communicated with chamber 80, interflow with 81 on duct thermostat lid, close access 84 ' simultaneously, so above-mentioned cooling water flow to outlet connection 83 1 sides, turns back to the suction pipe 75 of water pump 62 via radiator 29.After, owing to repeat same circulation,, can cool off two combinations 4 effectively with the cooling water that the thermolysis by radiator 29 is cooled ₁, 4 ₂

, because bottom and top are communicated with water pipe 77 ₃, 77 ₄Just passable with relatively short thing, and they are configured in two paddy portions between combination, so be hidden in two combinations 4 ₁, 4 ₂Between and unshowy, do not undermine the outward appearance of internal-combustion engine E.

In addition, because thermostat (サ-モスット) 82 is arranged on cooling front and rear combination 4 ₁, 4 ₂The chamber, interflow 80 at cooling water interflow in, so thermostat 82 detects two combinations 4 really ₁, 4 ₂Average water temperature, can carry out two the combination 4 ₁, 4 ₂The control of suitable water temperature.And, need can not realize the simplification of pipe arrangement at the pipe arrangement of thermostat 82.

And then, owing on the upper front surface of rear portion combination 42, engaging the duct thermostat lid 81 that has outstanding forward outlet connection 83, so, the water pipe 77 that this outlet connection 83 is communicated to the import of radiator 29 reduced ₅Bending, can suppress its flow resistance very for a short time, realize the improvement of outward appearance simultaneously.

In addition, because in rear portion combination 4 ₂Top sub 79 ₂On integrally form be communicated to than its little diameter the interflow chamber 80 bypass outlet connection 84, so can carry out top sub 79 at one stroke ₂With 84 pairs of rear portion combinations 4 of bypass outlet connection ₂Installation, can realize the simplification of pipe distribution operation.

In addition and since oil pump 57 and water pump 62 be configured in coaxial on, do by means of the shared pump shaft 61 that is driven by actuation gear 54a to drive them, so can realize the simplification that their driving is.

And along radial direction and overrunning clutch 53 adjacency configurations, whereby by the arranged coaxial of oil pump 57 and water pump 62, the horizontal width that can also suppress internal-combustion engine E increases oil pump 57.

In addition, because oil pump 57 and water pump 62 are configured in the front upper place of bent axle 15, so the gearbox portion 59 that can form the rear portion of crank pin 21 fully uninterruptedly and be attached thereto with above-mentioned oil pump 57 and water pump 62, can carry out at an easy rate internal-combustion engine E road clearance guarantee the reduction with the height of

vehicle seat

6a, 6b with the occupant.In this occasion, owing to pass through the above-mentioned configuration of oil pump 57 and water pump 62, even the front portion of crankcase 21 becomes the shape that how much bloats, its bellying also is absorbed into anterior combination 4 ₁In the following dead angle, so do not hinder the miniaturization of internal-combustion engine E.

And, avoided being immersed in the fluid of oil sump portion 66 because occupy the driving system of two

pumps

57,62 of the top position of bent axle 15, so it drives the stirring that system does not cause fluid, can help the minimizing of power loss.

And then, the input shaft 96 of variable-speed motor 8 and output shaft 97 and above-mentioned oil pump 57 and water pump 62 fully uninterruptedly horizontally after adjacent bent axle 15, realize the miniaturization of gearbox portion 95 on one side, being formed flatly its upper wall becomes possibility on one side, whereby, guarantee gearbox portion 95 and aforementioned rear part exhaust pipe 13 fully ₂Between distance, can avoid at an easy rate from rear part exhaust pipe 13 ₂The heat affecting of the variable-speed motor 8 that gearbox portion 95 and Qi Nei are accommodated.[starting system (with reference to Fig. 2 and Fig. 7)]

On the anterior bottom surface of crankcase 21, form and accommodate recess 88, disposing actuating motor 11 in it, its axis is paralleled with bent axle 15.The housing 89 of this starting motor 11, the 89a of the cylindrical support portion liquid of one end thickly is matched with formed through hole 90 on above-mentioned end wall of accommodating recess 88, simultaneously the support wrist 89b of its other end is fixed in crankcase 21 by bolt 111, is installed in whereby on the crankcase 21.The rotor shaft 91 of actuating motor 11 stretches in the crankcase 21 its front end, and formed small gear 92 can drive aforementioned starting gear 52 via reducing gear train 93 on its front end.So, starting gear 52, overrunning clutch 53 and reducing gear train 93, the starting transmission gear 94 that formation contact actuating motor 11 and bent axle are 15.

As mentioned above, owing to the front lower place that actuating motor 11 is configured in bent axle 15, so this starting motor 11 does not hinder the rear portion of crankcase 21 and the miniaturization of gearbox portion 95 yet, and, because be absorbed into anterior combination 4 ₁In the following dead angle, so do not hinder the miniaturization of internal-combustion engine E.In addition, though the above-mentioned configuration by actuating motor 11, reducing gear train 93 are immersed in the fluid in the oil sump portion 66 of crankcase 21 bottoms, are to move when engine start because of it, do not stir fluid, so do not cause power loss in the engine operation action.

The present invention is not limited to the various embodiments described above, and all design alterations are possible in the scope that does not break away from its spirit.

As mentioned above according to the 1st feature of the present invention and since bent axle outside the 1st trunnion Connecting on the side-prominent end each other axial adjacency the 1st and the 2nd timing transmission device and Be adjacent to the generator in their outside, in addition, at another outstanding to the 2nd trunnion outside Connecting transmission device and starting transmission gear on the end, thus can be at one stroke the 1st and the 2 timing transmission devices are assembled into an end of bent axle, and their assembling is good. In addition, When the maintenance of carrying out the 1st and the 2nd timing transmission device, as long as sending out their outside Motor takes off just passable from bent axle, their maintainability also is good. And by sending out Motor is in operation to the adjacency configuration of two timing transmission devices, from two timing transmissions dresses Put the oily foam that splashes and hang on the generator, can effectively cool off it. And then, crankcase two The weight balancing of side is good, thereby when filling onboard, can realize at an easy rate a car body left side Right weight balancing.

In addition, according to the 2nd feature of the present invention, because by by the face vertical with the axis of bent axle Cut apart (about cut apart) the 1st and the 2 half casing consist of crankcase, of bent axle The 1 and the 2nd trunnion is engaged in respectively on these the 1st and the 2 half casings via ball bearing, Be fixed in bent axle a driving timing sprocket end, the 1st and the 2nd timing transmission device outside The internal diameter of the ball bearing that cooperates less than the 1st trunnion is set in the footpath for, so, because of the 1st, The driving timing sprocket of the 2nd timing transmission device is fixed in an end of bent axle, so can be bent axle In the crankcase of cutting apart about being installed in, thereby, the installation of drive sprocket when bent axle is monomer Become possibility, operation is good.

And then, according to the 3rd feature of the present invention and since transmission device be configured in compared with Axle head one side of the more close bent axle of moving transmission device is the driving gear of No. one transmission devices therewith The pump driver gear that is meshed of wheel is fixed on bent axle and is bearing in abreast pump shaft on the crankcase Pars intermedia, with the one-way clutch of starting transmission gear along the juxtaposed lubrication oil of radial direction Pump is connected in an end of this pump shaft, in addition, the cooling water pump is connected in its other end, So, by the drivetrain of oil pump and water pump is shared, can help the formation letter of engine Change, and, by oil pump is adjacent to the one-way clutch configuration along radial direction, because oil pump With the arranged coaxial of water pump, the transverse width that also can suppress engine increases.

Claims

1. V-shape internal combustion engine for vehicle, bent axle (15) be supported in crankcase (21) via bearing (19,20) respectively across relative the 1st and the 2nd main journal (17,18) of its crank portion (16), with this bent axle (15) be center V font open the 1st the combination (4 ₁) and the 2nd combination (4 ₂) be connected in crankcase (21), on bent axle (15), connecting the starting transmission gear (94), driving the 1st and the 2nd combination (4 that its transmission of power are delivered to bent axle (15) to a transmission device (54) of clutch (100), the driving force of actuating motor (11) ₁, 4 ₂) valve driving cam axle (41 ₁, 41 ₂) the 1st and the 2nd timing transmission device (46 ₁, 46 ₂) and generator (30), make the left and right directions configuration of bent axle (15) when adorning onboard towards car body, it is characterized in that:

On the outstanding end in the 1st main journal (17) outside, connecting mutually the 1st and the 2nd timing transmission device (46 of adjacency vertically at bent axle (15) ₁, 46 ₂) and be adjacent to the generator (30) in their outside, in addition, on the outstanding the other end in the 2nd main journal (18) outside, connecting a transmission device (54) and starting transmission gear (94).

2. the V-shape internal combustion engine for vehicle described in the claim 1 is characterized in that:

The the 1st and the 2nd half chests body of being cut apart by the quilt and the face of the axis normal of bent axle (15) (21a, 21b) constitutes crankcase (21), the the 1st and the 2nd main journal (17,18) of bent axle (15) is engaged in respectively on these the 1st and the 2nd half chests bodies (21a, 21b) via ball bearing (19,20), an end that is fixed in bent axle (15), the 1st and the 2nd timing transmission device (46 ₁, 46 ₂) driving timing sprocket (42 ₁, 42 ₂) external diameter (d ₁) set the internal diameter (d of the ball bearing (19) that is cooperated less than the 1st main journal (17) for ₂).

3. the V-shape internal combustion engine for vehicle described in the claim 1 or 2 is characterized in that:

A transmission device (54) is configured in compared with axle head one side of moving the more close bent axle of transmission device (94) (15), the pump driver gear (56) that the actuation gear (54a) of No. one transmission devices (54) therewith is meshed is fixed on the intermediate portion that is bearing in the pump shaft (61) on the crankcase (21) with bent axle (15) abreast, being connected in an end of this pump shaft (61) along the juxtaposed lubrication oil pump of radial direction (57) with the overrunning clutch (53) of starting transmission gear (94), in addition, cooling water pump (62) is connected in its other end.