CN1361355A - Engine of body frame type two-wheel motorcycle - Google Patents

Engine of body frame type two-wheel motorcycle Download PDF

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Publication number
CN1361355A
CN1361355A CN01144611A CN01144611A CN1361355A CN 1361355 A CN1361355 A CN 1361355A CN 01144611 A CN01144611 A CN 01144611A CN 01144611 A CN01144611 A CN 01144611A CN 1361355 A CN1361355 A CN 1361355A
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CN
China
Prior art keywords
body frame
motor
cylinder
crankcase
axis
Prior art date
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Granted
Application number
CN01144611A
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Chinese (zh)
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CN1294347C (en
Inventor
久保田良
高桥克德
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Publication date
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Publication of CN1361355A publication Critical patent/CN1361355A/en
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Publication of CN1294347C publication Critical patent/CN1294347C/en
Anticipated expiration legal-status Critical
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00Casings, e.g. crankcases or frames
    • F02F7/0002Cylinder arrangements
    • F02F7/0019Cylinders and crankshaft not in one plane (deaxation)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/16Engines characterised by number of cylinders, e.g. single-cylinder engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/20SOHC [Single overhead camshaft]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads
    • F02F2001/244Arrangement of valve stems in cylinder heads
    • F02F2001/245Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The invention relates to a backbone type motorcycle, space between the cylinder head and the backbone will be enlarged to thereby reduce the bending of the air intake system as far as possible with the aim of reducing the intake air resistance. In a motorcycle in which an engine main unit 20 of an engine E to be suspended from a backbone 2 inclining downward toward the rear from a head pipe 1 is constructed by a crankcase 21 for supporting a crankshaft 28; a cylinder block 22 which is arranged such that an axis Ab of a cylinder bore 22a inclines at a small gradient alpha upwardly toward the front; and a cylinder head 23 to be connected to the front end of the cylinder block 22, and in which in space 66 between the cylinder head 23 and the backbone 2, there is disposed an air intake system 70, the cylinder block 22 is arranged such that the axis Ab of the cylinder bore 22a offsets S downward with respect to the axis Ac of the crankshaft 28.

Description

The motor of body frame type two-wheel motorcycle
[technical field that the present invention belongs to]
The present invention relates to a kind of allow from the preceding pipe of vehicle body frame towards the body frame of the downward-sloping extension in rear on the body of the motor established of hanger frame, crankcase by supporting crankshaft, axis outstanding, cylinder-bore the cylinder body of configuration that is inclined upwardly towards the place ahead from the place ahead of this crankcase, the cylinder cap that is bonded on the front end of this cylinder body constitutes, disposing the body frame type two-wheel motorcycle of engine charge system in the space between this cylinder cap and above-mentioned body frame, the improvement of particularly this two-wheel car engine.
[technology in the past]
This two-wheeled motor vehicle for example shown in the open 2000-249028 communique of special permission like that, be known.
[the problem to be solved in the present invention]
In this two-wheeled motor vehicle, have from the body frame of the preceding pipe downward-sloping extension towards the rear of vehicle body frame and to avoid and manipulator's human hair combing waste is given birth to and interfered, allow manipulator's advantage up and down easily, allow the cylinder body of giving prominence to towards the place ahead from this crankcase be configured to make the axis of cylinder-bore to be inclined upwardly in addition towards the place ahead, not only promote lubricated cylinder cap internal valve door drive mechanism lubricant oil afterwards under crankcase one side spontaneous current, can also guarantee to be provided with between cylinder cap and the body frame space of air inlet system.
Yet, in this two-wheeled motor vehicle,, reduce the bending of gas handling system as far as possible, thereby reduce the air inlet impedance in order to realize improving the output of motor and low fuel consumption performance, need to enlarge the space between cylinder cap and the body frame.
The objective of the invention is under the situation that does not change cylinder axially bored line the place ahead angle up, to satisfy above-mentioned requirement, a kind of motor of above-mentioned body frame type two-wheel motorcycle is provided.
[mode that addresses the above problem]
To achieve these goals, the body of the motor that hanger frame was established on the present invention allowed from the preceding pipe of vehicle body frame towards the body frame of the downward-sloping extension in rear, crankcase by supporting crankshaft, axis outstanding, cylinder-bore the cylinder body of configuration that is inclined upwardly towards the place ahead from the place ahead of this crankcase, the cylinder cap that is bonded on the front end of this cylinder body constitutes, disposing the body frame type two-wheel motorcycle of engine charge system in the space between this cylinder cap and above-mentioned body frame, it the 1st is characterised in that, disposes cylinder body with respect to the axis of bent axle towards the mode of below skew with the axis in cylinder hole.
According to the 1st feature, cylinder body and cylinder cap are in the heeling condition that keeps the cylinder axially bored line, with respect to the square down one-tenth displacement of crankcase, thereby can enlarge the space between cylinder cap and the body frame, thereby make the air inlet of being disposed in this space be bending seldom, reduce the air inlet impedance, can realize improving the output performance of motor and low fuel consumption.
In addition, the axis in cylinder hole is with respect to the skew of crankshaft center line, during pressure maximum in the motor expansion stroke, reduced to act on the lateral thrust on the piston, the sliding friction resistance that reduced piston, thus further improved low burnup performance.
In addition, the present invention is on the basis of the 1st feature, and it the 2nd is characterised in that, disposes cylinder cap with respect to the axis in cylinder hole towards the mode of below skew with the axis that will be supported in the valve driving axle on the cylinder cap.
According to the 2nd feature, allow cylinder cap with respect to crankcase with two square down one-tenth displacements of stage, thereby can further enlarge the space between cylinder cap and the body frame, the bending that is configured in the air inlet system in this space can be reduced to littler, more effectively realize reducing the air inlet impedance.
In addition, the present invention is on the basis of the 1st or the 2nd feature, than the more forward side of bent axle, actuating motor is installed on top in crankcase, its the 3rd feature is, after this actuating motor and bent axle roughly directly over, the formation hanger frame is located at the suspention projection on the body frame above crankcase.
According to the 3rd feature, actuating motor has utilized the space of broad between crankcase and the body frame, can be arranged on the crankcase simultaneously.And above-mentioned suspention projection is configured near motor center of gravity place, the less influence that is subjected to engine luggine, thereby the vibration that passes to body frame from above-mentioned suspention projection also diminishes, and makes that the sensation of taking is better.
And the present invention is on the basis of the 3rd feature, and its 4th feature is, it is parallel with bent axle respectively to allow the input shaft that is assembled in the speed changer on the crankcase and output shaft be configured to, and simultaneously, its input shaft is configured in than bent axle and output shaft more by the position of top.
According to the 4th feature, it has shortened the distance between bent axle and the output shaft, can realize the compactness of crankcase, and then realizes the compactness of motor.And, above-mentioned suspention projection is owing to occupied the position of bent axle directly over roughly, along with bent axle and output shaft with respect to input shaft are offset towards the top, must allow the crankcase upper wall directly over the input shaft a part towards above under the situation about bloating, can avoid this bellying and above-mentioned suspention projection to interfere.
[simple declaration of accompanying drawing]
Fig. 1 is the side view of expression the present invention the 1st embodiment's body frame type two-wheel motorcycle.
Fig. 2 is the amplification plan view of vertically cutting open along the motor of 2-2 line among Fig. 1.
Fig. 3 is the sectional view along 3-3 line among Fig. 2.
Fig. 4 is the sectional view along 4-4 line among Fig. 2.
Fig. 5 is expression the present invention the 2nd embodiment's, the sectional view corresponding with Fig. 3.
[explanation of symbol]
E is a motor, F is a vehicle body frame, and M is a two-wheeled motor vehicle, and S is that the axis in cylinder hole is with respect to the side-play amount of crankshaft center line towards the below, S ' is that the axis of camshaft is with respect to the axis in the cylinder hole side-play amount towards the below, the 1st, preceding pipe, the 2nd, body frame, the 20th, engine body, the 21st, crankcase, the 22nd, cylinder body, the 23rd, cylinder cap, the 24th, suspention projection (anterior suspention projection), the 28th, bent axle, the 38th, camshaft, the 66th, space, the 70th, air inlet system, the 80th, actuating motor, the 85th, speed changer, the 86th, input shaft, the 87th, output shaft.
[inventive embodiments]
Below the one embodiment of the invention of embodiments of the invention shown in reference to the accompanying drawings described.
Fig. 1~Fig. 4 represents the present invention the 1st embodiment, Fig. 1 is the side view of body frame type two-wheel motorcycle, Fig. 2 is the amplification plan view of vertically cutting open along the motor of 2-2 line among Fig. 1, Fig. 3 is the sectional view along 3-3 line among Fig. 2, Fig. 4 is the sectional view along 4-4 line among Fig. 2, Fig. 5 is expression the present invention the 2nd embodiment's, the sectional view corresponding with Fig. 3.
In addition, in the following description,, be benchmark to be applicable to two-wheeled motor vehicle M of the present invention for all around.
At first, the present invention the 1st embodiment's who represents from Fig. 1~Fig. 4 explanation.In Fig. 1 and Fig. 3, the vehicle body frame F of two-wheeled motor vehicle M by preceding pipe 1, be welded on before this body frame 2 of the steel pipe system of downward-sloping extension towards the rear on pipe 1, be welded on the after-frame of the rear end of this body frame 2 making 3 and constitute by steel pipe.On preceding pipe 1, can turn to the articulated front fork 5 that is supporting front-wheel 4f by axle in ground.
At the center rest 7 that is welding on the rearward end of after-frame 3 below extending to, they are supporting the back vent 6 of an axle trailing wheel 4r by pivot 8.Between this back vent 6 and after-frame 3, be connected vibration damper 9.In addition, on after-frame 3, front and back are installed with the chest 10 and the fuel tank 11 of accommodating article such as the helmet, and their top can be provided with seat 12 with opening and closing.
Hanger frame is being established single cylinder engine E on body frame 2.This motor E and body frame 2 are covered by car body cover 13 in the lump, connecting on the front end of this car body cover 13 towards about the outside pair of posts 23,23 that bloats of one side.
And as Fig. 2~shown in Figure 4, in above-mentioned single cylinder engine E, engine body 20 is by crankcase 21, the cylinder body that protrudes in the place ahead 22 that combines with this crankcase 21, and the cylinder cap 23 that is bonded on these cylinder body 22 front ends constitutes.Be formed with a top suspention projection 24 in the above on the crankcase 21, up and down a pair of rear portion suspention projection 25,25 in its back, above-mentioned suspention projection 24 is fixed on the outstanding down front carriage 15 that is provided with of body frame 2 intermediate portions by bolt 26, and rear portion suspention projection 25,25 is fixed on the above-mentioned center rest 7 by bolt 26.
Crankcase 21 is made of the half housing 21a in left side and the half housing 21b in right side of cutting apart about on the vertical surface P that comprises body frame 2 axis, by two halfbody housing 21a, 21b, allow 28 pairing left and right bearings of bent axle 27,27 ' of left and right horizontal direction configuration support.Connecting the piston 29 that slides in the single cylinder hole 22a that is having cylinder body 22 on this bent axle 28 by connecting rod 30.
Cylinder body 22 is configured on the above-mentioned vertical surface P in axis Ab position of its cylinder hole 22a, and tilts with the small angle α that makes progress towards the place ahead.
Be formed with the firing chamber 31 that is close to piston 29 end faces on the cylinder cap 23, be opened on the suction port 32 above the cylinder cap 23 that connects this firing chamber 31, be opened on the relief opening 33 below the cylinder cap 23 that connects this firing chamber 31, simultaneously, air inlet and the outlet valve 34,35 that opens and closes these air inlets and relief opening 32,33 is installed.Like this, the valve driving mechanism 36 that opens and closes by air inlet and outlet valve 34,35 is arranged in the valve driving chamber 37 of cylinder cap 23.
This valve driving mechanism 36 by air inlet and outlet valve 34,35 intermediate portions and bent axle 28 parallel on cylinder cap 23 by pairing left and right bearing 39, the 39 ' camshaft 38 that supports, allow interlock between this camshaft 38 and the suction valve 34 and be supported on intake rocker 40 on the cylinder cap 23 with axle, allow interlock between this camshaft 38 and the outlet valve 35 and be supported on exhaust rocker arm 41 on the cylinder cap 23, and air inlet and outlet valve 34,35 are constituted towards the valve spring 42,43 that closing direction is exerted pressure respectively with axle.
Camshaft 38 is connected on the bent axle 28 by timing transmission device 61.This timing transmission device 61 is fixed in driving sprocket wheel 62 on the bent axle 28 by what face mutually with left side bearing 27 outsides of supporting bent axle 28, be fixed on the driven sprocket 63 of an end of camshaft 38, the ring-type timing chain 64 that volume hangs on two sprocket wheels 62,63 constitutes, and the rotation of bent axle 28 can be delivered on the camshaft 38 with 1/2nd reduction speed ratio.Timing chain 64 is accommodated in the timing chain passage 65 that is formed on 22 1 sidewalls of cylinder body.
Cylinder body 22 to be to dispose with respect to the axis Ac of bent axle 28 the axis Ab of its cylinder hole 22a towards the mode of below offset distance S, in addition, cylinder cap 23 is to dispose with respect to the axis Ab of cylinder hole 22a the axis Am of camshaft 38 towards the mode of below offset distance S '.By the skew in these two stages, cylinder body 23 with respect to crankcase 21 displacement in square two stages of one-tenth, thereby can enlarge space 66 between cylinder cap 23 and the body frame 2 down effectively in the heeling condition that keeps cylinder axially bored line 22a.
Among Fig. 1 and Fig. 3, the air inlet of configuration motor E is 70 on above-mentioned space 66 for another example.The suction tude 71 that constitutes this air inlet and be a part of 70 with combine above the cylinder cap 23 that is communicated with suction port 32.This suction tude 71 is upright towards the top from cylinder cap 23, bends to the place ahead again below body frame 2, and its end is promptly connecting side air inlet type Carburetor 72 on the upstream extremity, connecting air-strainer 73 on its suction port.Having constituted this air inlet is 70.
Yet, disposing this air inlet is 70, in order to resemble the space 66 that enlarges above-mentioned between cylinder cap 23 and the body frame 2, can set the radius of curvature of the curved part of suction tude 71 bigger, consequently, reduced the air inlet impedance in the suction tude 71, the output that can improve motor, and then the raising of realization low fuel consumption performance.
And the axis of cylinder-bore 22a was as in the past, owing to tilt with the small angle α on the direction forward, timing chain passage 65 tilts too.Like this,, after being lubricated, flowing to timing chain passage 65 naturally down, thereby can turn back in the above-mentioned oil groove from the lubricant oil of supplying with towards the valve driving mechanism 36 of cylinder cap 23 by oil pump not shown in the figures of crankcase 21 inner bottom part oil grooves.
The axis of cylinder-bore 22a is in the axis Ac skew with respect to bent axle 28, particularly in the expansion stroke of motor E during pressure maximum, reduce to act on the lateral thrust on the piston 29, thereby reduced the sliding friction resistance of piston 29, can further improve low burnup performance.
The outlet pipe 81 below in conjunction with connection relief opening 33 of cylinder cap 23, this outlet pipe 81 is bending extension towards the rear, is connected on the baffler (not shown in the figures) that is disposed at trailing wheel 4r one side.
In Fig. 2 and Fig. 3, on an end of bent axle 28, closing the rotor 76 of generator 75 by bond, this rotor 76 is connected by overrunning clutch 78 with starting gear 77 on being supported on bent axle 28 free to rotately.Overrunning clutch 78 has obtained from starting gear 77 towards rotor the 76 unidirectional rotating forces that transmit, and in addition, allows actuating motor 80 that above-mentioned starting gear 77 drives by reduction gear 79 on the top that is installed on crankcase 21 than bent axle 28 more forward sides.
Like this, after actuating motor 80 and bent axle 28 roughly directly over configuration lifting set up the above-mentioned anterior suspention projection 24 that motor is used.
This actuating motor 80 has utilized the space 66 of broad between crankcase 21 and the body frame 2, can be arranged on the crankcase 21 simultaneously.And above-mentioned suspention projection 24 is configured in the center of gravity place near motor E, the less influence that is subjected to motor E vibration, thereby the vibration that passes to body frame 2 from top suspention projection 24 also diminishes, and makes that the sensation of taking is better.
In Fig. 2 and Fig. 3, accommodated the speed changer 85 that has input shaft 86 and output shaft 87 on the crankcase 21 with bent axle 28 parallel configuration.At this moment, input, output shaft 86,87 are supported on the crankcase 21 by pairing left and right bearing 94,94 ' and 95,95 ' respectively.Between these inputs, output shaft 86,87, constitute step-by-step variable gear row 881~88n.The power that bent axle 28 takes place closes 89,1 reduction gear row 90 of device and speed change clutch 91 is delivered to input shaft 86 by centrifugal, be delivered on the output shaft 87 by selected speed change gear biographies from this input shaft 86 again, be delivered on the trailing wheel 4r by the chain-driven unit 92 that is configured in outside the crankcase 24 then, with its driving.
On above-mentioned speed changer 85, output shaft 87 be configured in the roughly the same horizontal plane of bent axle 28 on, input shaft 86 is configured in diaxon 28,87 neutral positions of above-mentioned bent axle 28 and the skew of output shaft 87 tops.Above input shaft 86, disposing the displacement drum 93 of selecting speed change gear row usefulness.
Like this, the spacing between bent axle 28 and the output shaft 87 is short, can realize the compactness of crankcase 21, and then realizes the compactness of motor E.And, above-mentioned anterior suspention projection 24 is owing to occupied the position of bent axle 28 directly over roughly, along with bent axle 28 and output shaft 87 with respect to input shaft 86 are offset towards the top, must allow crankcase 21 upper walls directly over the input shaft 86 a part towards above under the situation about bloating, can avoid this bellying and above-mentioned suspention projection 24 to interfere.
Below, according to shown in Figure 5 the present invention the 2nd embodiment is described.
In the 2nd embodiment, on the cylinder body 22 of motor E and cylinder cap 23, form cooling jacket 96.Allow the axis Ab of cylinder hole 22a of this cylinder body 22 with respect to the axis Ac of bent axle 28 towards below offset distance S.That is, the axis Am of camshaft 28 is configured on the axis Ab of cylinder hole 22a.Top suspention projection 24 is integrally formed with the upper wall of cylinder body 22.In addition, be on 70 in air inlet, without the Carburetor 72 of the foregoing description, but throttle valve body 172 is set, therewith the Fuelinjection nozzle of on suction tude 71, using together 74 towards the outlet installation burner oil of suction port 32.
The input shaft 86 of speed changer 85 and output shaft 87 be configured in the roughly the same horizontal plane of bent axle 28 on.
Other structure and previous embodiment are roughly the same, have added identical reference marks with the corresponding part of the foregoing description in Fig. 5, have omitted the explanation to it.
The present invention is not limited to the foregoing description, can be used as the change in the various designs in not breaking away from the scope of combining purport.
[effect of invention]
According to above-mentioned the present invention the 1st feature, will dip down towards the rear from the front pipe of vehicle body frame The body of the engine that mast-up is established on the body frame that tiltedly extends is by the crankcase of supporting crankshaft, from this The cylinder body that the place ahead of crankcase axis outstanding, cylinder-bore is inclined upwardly towards the place ahead and disposes connects The cylinder cap that is combined in the front end of this cylinder body consists of, and joins in the space between this cylinder cap and above-mentioned body frame Putting the body frame type two-wheel motorcycle of engine charge system, with the axis in the cylinder hole axle with respect to bent axle Line disposes cylinder body towards the mode of below skew, thereby cylinder body and cylinder cap are keeping the cylinder axially bored line Heeling condition the time, with respect to crankcase square one-tenth displacement down, can enlarge cylinder cap and master Space between the frame, make the air inlet of disposing in this space be bending seldom, reduced the air inlet impedance, Can realize improving the output performance of engine and low fuel consumption. In addition, the axle in cylinder hole Line is with respect to the skew of crankshaft center line, during maximum pressure in the engine expansion stroke, reduced Act on the lateral thrust on the piston, the sliding friction resistance that reduced piston can be further Improved low burnup performance.
In addition, according to the 2nd feature of the present invention, be on the basis of the 1st feature, will be supported on cylinder The valve driving that covers uses the axis of camshaft to be offset towards the below with the axis with respect to cylinder-bore Mode disposes cylinder cap, allow cylinder cap with respect to crankcase with the square one-tenth displacement down of two stages, thereby Can further enlarge the space between cylinder cap and the body frame, can be with the air inlet that is configured in this space The bending of system reduces to littler, more effectively realizes reducing the air inlet impedance.
And, according to the 3rd feature of the present invention, be on the basis of the 1st or the 2nd feature, Than the more forward side of bent axle, in the top of crankcase actuating motor is installed, after this actuating motor and Bent axle roughly directly over, the formation mast-up is located at the suspention projection on the body frame above crankcase, Thereby allow actuating motor utilize space wider between crankcase and the body frame, can be arranged on song simultaneously On the axle box. And above-mentioned suspention projection is configured near engine center of gravity place, less being started The impact of machine vibration, thereby pass from above-mentioned suspention projection and also to diminish to the vibration of leading back, so that take Sensation better.
And, according to the 4th feature of the present invention, be on the basis of the 3rd feature, allow be assembled in song The power shaft of the variable-speed motor on the axle box and output shaft are configured to respectively parallel with bent axle, simultaneously, and with it Power shaft is configured in the position than bent axle and the more top side of output shaft, thereby has shortened bent axle and output Distance between the axle can realize the densification of crankcase, and then realizes the densification of engine. And above-mentioned suspention projection has been owing to occupied the position of bent axle directly over roughly, along with respect to defeated The bent axle and the output shaft that enter axle are offset towards the top, on the crankcase that must allow directly over the power shaft In the situation that the part of wall bloats towards the top, can avoid this bellying and above-mentioned suspention projection to send out Give birth to and interfere.

Claims (4)

1. the motor of a body frame type two-wheel motorcycle, it will the body frame (2) from the preceding pipe (1) of vehicle body frame (F) towards the downward-sloping extension in rear goes up the body (20) of the motor (E) that hanger frame establishes, crankcase (21) by supporting crankshaft (28), give prominence to from the place ahead of this crankcase (21), the cylinder body (22) that the axis (Ab) of cylinder-bore (22a) is inclined upwardly towards the place ahead and disposes, the cylinder cap (23) that is bonded on the front end of this cylinder body (22) constitutes, disposing motor (E) air inlet system (70) in the space (66) between this cylinder cap (23) and above-mentioned body frame (2), it is characterized in that:
Dispose cylinder body (22) with respect to the axis (Ac) of bent axle (28) towards the mode of below skew (S) with the axis (Ab) of cylinder hole (22a), form the motor of body frame type two-wheel motorcycle.
2. as the motor of the body frame type two-wheel motorcycle of claim 1 record, it is characterized in that:
Support cylinder cap (23) valve driving with the axis (Am) of camshaft (38) to dispose cylinder cap (23), the motor of formation body frame type two-wheel motorcycle towards the mode of below skew (S ') with respect to the axis (Ab) of cylinder hole (22a).
3. as the motor of claim 1 or 2 body frame type two-wheel motorcycles of putting down in writing, it is characterized in that:
Than the more forward side of bent axle (28), actuating motor (80) is installed on top in crankcase (21), this actuating motor (80) afterwards and bent axle (28) roughly directly over, the formation hanger frame is located at the suspention projection (24) on the above-mentioned body frame (2) above crankcase (21), forms the motor of body frame type two-wheel motorcycle.
4. as the motor of the body frame type two-wheel motorcycle of claim 3 record, it is characterized in that:
Allow the input shaft (86) and the output shaft (87) that are assembled in the speed changer (85) on the crankcase (21) be configured to parallel with bent axle (28) respectively, simultaneously, its input shaft (86) is configured in than bent axle (28) and output shaft (87) more by the position of top, forms the motor of body frame type two-wheel motorcycle.
CNB011446110A 2000-12-28 2001-12-19 Engine of body frame type two-wheel motorcycle Expired - Lifetime CN1294347C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000403154A JP3569678B2 (en) 2000-12-28 2000-12-28 Backbone type motorcycle engine
JP403154/2000 2000-12-28

Publications (2)

Publication Number Publication Date
CN1361355A true CN1361355A (en) 2002-07-31
CN1294347C CN1294347C (en) 2007-01-10

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CNB011446110A Expired - Lifetime CN1294347C (en) 2000-12-28 2001-12-19 Engine of body frame type two-wheel motorcycle

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JP (1) JP3569678B2 (en)
KR (1) KR100472316B1 (en)
CN (1) CN1294347C (en)
AR (1) AR032064A1 (en)
BR (1) BR0106510B1 (en)
CO (1) CO5300473A1 (en)
MY (1) MY128801A (en)
TW (1) TW524764B (en)

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CN100443356C (en) * 2004-11-24 2008-12-17 雅马哈发动机株式会社 Motor cycle
CN100506630C (en) * 2006-02-28 2009-07-01 本田技研工业株式会社 Motorcycle
CN101746474A (en) * 2008-12-17 2010-06-23 光阳工业股份有限公司 Engine structure of motor cycle
CN101723049B (en) * 2008-10-31 2012-10-10 本田技研工业株式会社 Motorcycle

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JP4217088B2 (en) * 2003-03-19 2009-01-28 本田技研工業株式会社 Forced air cooling engine
JP2009085096A (en) * 2007-09-28 2009-04-23 Honda Motor Co Ltd Starter motor peripheral structure
JP5147444B2 (en) * 2008-02-13 2013-02-20 本田技研工業株式会社 Motorcycle
JP5255937B2 (en) * 2008-07-18 2013-08-07 本田技研工業株式会社 Body structure of saddle-ride type vehicle
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MY128801A (en) 2007-02-28
AR032064A1 (en) 2003-10-22
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TW524764B (en) 2003-03-21
KR100472316B1 (en) 2005-03-08

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