CN1871417A - Engine for saddle riding-type vehicle and saddle riding-type vehicle with the same - Google Patents
Engine for saddle riding-type vehicle and saddle riding-type vehicle with the same Download PDFInfo
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- CN1871417A CN1871417A CNA200480030958XA CN200480030958A CN1871417A CN 1871417 A CN1871417 A CN 1871417A CN A200480030958X A CNA200480030958X A CN A200480030958XA CN 200480030958 A CN200480030958 A CN 200480030958A CN 1871417 A CN1871417 A CN 1871417A
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- type vehicle
- bent axle
- straddle type
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- axle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0002—Cylinder arrangements
- F02F7/0019—Cylinders and crankshaft not in one plane (deaxation)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Transmissions (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
An engine has components and devices such as a cylinder block (19) inside which a cylinder is formed, a crankshaft (28), a drive shaft (48), an automatic speed changer, and a balancer weight (129a). The automatic speed changer has a primary sheave, a secondary sheave, and a V-belt carried on the primary sheave and the secondary sheave. The automatic speed changer is received in a speed changer case (45). In a side view, the axis (C) of the crankshaft (28) is offset upward from the center line (A) of the cylinder.
Description
Technical field
The present invention relates to a kind of Straddle type vehicle that is used for the motor of Straddle type vehicle and this motor is installed.
Background technique
Straddle type vehicle is widely used as for example motorcycle etc.Usually, for the motor that is used for motorcycle etc., the axis (being the center line of cylinder) that cylinder block, crankcase etc. forms cylinder block intersects each other with the axis of crankcase.On the other hand, in order to shorten the length of motor along fore-and-aft direction, the motor of the axis of the axis runout crankcase of cylinder block also is known.JP-A-2002-227601 (below be called patent documentation 1) discloses this motor.
Disclosed motor comprises the speed changer that is contained in the crankcase in the patent documentation 1.Speed changer is made up of speed change input shaft, speed change output shaft and a plurality of change gear train that is arranged between speed change input shaft and the speed change output shaft.The speed change input shaft is arranged on respect to the position of skew upwards, the plane of the axis of axis that includes bent axle and speed change output shaft.For this motor, cylinder block extends upward forward from the top of the front end of crankcase.In addition, the cylinder block axis of being arranged to cylinder block is positioned at the place ahead of the axis of bent axle.
Patent documentation 1:JP-A-2002-227601
Incidentally, except the speed changer of being made up of a plurality of change gear trains, V banding pattern stepless speed variator also is used for the motor of motorcycle etc. in some cases.Disclosed motor does not adopt V banding pattern stepless speed variator as speed changer in the patent document 1, therefore, can not utilize the layout of this motor as the motor with V banding pattern stepless speed variator.
Motor for being used for motorcycle etc. except speed changer, also is equipped with subsidiary engine in some cases, is used for to crankshaft or bent axle to its transferring power.In this case, also need to be used to install the space of subsidiary engine.Particularly, for the subsidiary engine (call " elongated shape subsidiary engine ") of axial length, must guarantee the space that this subsidiary engine is installed in big being used to greater than diameter length.Therefore, in order to realize effective layout of motor, the position relation between speed changer and other subsidiary engine or the layout of air inlet component are important.
But, in patent document 1, do not have effective layout of special concern subsidiary engine in the disclosed motor.Therefore, subsidiary engine is not arranged in the motor effectively, and is very big thereby the crankcase equidimension is tended to become.But when the crankcase equidimension became very big, the space between crankcase etc. and the car body became very little, made to be difficult to be provided with air inlet component above crankcase.
In addition, because motor is provided with balace weight, can produce the effect that suppresses vibration by this balace weight, on the other hand, the driving of balace weight is accompanied by the increase of slip resistance, thereby has the possibility that causes that engine performance reduces.Therefore, relevant with the layout of subsidiary engine layout need be considered engine performance.
Summary of the invention
In view of above situation, the present invention has been proposed.The motor that is used for Straddle type vehicle that the purpose of this invention is to provide a kind of compact structure in this motor, is provided with V banding pattern stepless speed variator and subsidiary engine effectively.
According to the present invention, the motor that is used for Straddle type vehicle comprises the cylinder block that is formed with cylinder in it, be arranged in this cylinder so as in this cylinder pistons reciprocating, the bent axle that rotates along with the to-and-fro motion of piston, when along axially the seeing of bent axle, be arranged on the subsidiary engine of bent axle top, the live axle and the automatic transmission of output rotary driving force, wherein, the axis of bent axle is from the upwards skew of center line of cylinder when along axially the seeing of described bent axle, described subsidiary engine be used for to crankshaft or from bent axle to its transferring power, described automatic transmission comprises the main pulley that rotates along with crankshaft rotating, directly or indirectly be connected the secondary pulley on the described live axle and center on main pulley and the driving belt of secondary pulley winding.
Be used for the motor of Straddle type vehicle for this, when along axially the seeing of bent axle, the axis of bent axle (center of axle) is from the upwards skew of center line of cylinder.In other words, when along axially the seeing of bent axle, cylinder is arranged on the position that offsets downward from bent axle.The corresponding space of amount that generation one and cylinder offset downward.Therefore, by in this space, subsidiary engine being set, realized effective layout of subsidiary engine.Even if need the elongated shape subsidiary engine of big installing space also can effectively be provided with.
In addition, alleged herein " effectively being provided with " is meant, for example, high density setting, neatly be provided with, make the suitable function that subsidiary engine etc. is easy to show that it is original layout, improve the motor that is used for Straddle type vehicle performance layout or improve operability or improve the layout etc. of the performance of Straddle type vehicle up and down.
When along axially the seeing of bent axle, subsidiary engine can be arranged on the top of imaginary line at the center of the center that connects main pulley and secondary pulley.
Therefore, subsidiary engine is arranged on the top of automatic transmission, thereby has realized effective setting of subsidiary engine.
Subsidiary engine can comprise balace weight.
Therefore, this balace weight has produced damping effect.In addition, for this motor, because bent axle, therefore can suppress the increase of the piston slip resistance that caused by balace weight from the disalignment of cylinder.
Preferably, the motor that is used for Straddle type vehicle comprises the cylinder head that is connected on the cylinder block, be arranged on intake valve or exhaust valve on the cylinder head, be arranged in the cylinder head so that the driving component that opens and closes the cam mechanism of valve and be used for transmitting to cam mechanism the rotary driving force of bent axle, cylinder block is separated into the driving component accommodating chamber that is used to hold driving component, and cylinder with respect to bent axle axially between driving component accommodating chamber and automatic transmission.
Thereby automatic transmission and driving component accommodating chamber are arranged on opposite side each other, and cylinder is arranged between them.Therefore, avoided the interference between automatic transmission and the driving component accommodating chamber and improved the degrees of freedom of the layout of automatic transmission.
Main pulley is preferably supported by bent axle cantilever ground.
Thereby, can realize the efficient layout of automatic transmission.
Preferably, the motor that is used for Straddle type vehicle comprises the crankcase that is used to hold bent axle at least and is connected to air inlet component on the cylinder head directly or indirectly, and the partial-air admission parts are arranged on cylinder block float chamber top at least.
Thereby, realized effective setting of air inlet component.
Preferably, the motor that is used for Straddle type vehicle comprises and is connected to the air inlet component on the cylinder head directly or indirectly and is used to hold the crankcase of bent axle at least, cylinder block and crankcase constitute engine block, bent axle extends upward at right and left, automatic transmission is arranged on the left side of engine block and the either side in the right side, secondary pulley is arranged on main pulley top, and air inlet component is arranged on the engine block top and is positioned at the opposition side of the side that automatic transmission is set with respect to left and right directions.
Like this, secondary pulley is arranged on the main pulley top, and air inlet component is arranged on the engine block top, thereby produces rich space below engine block.Therefore, increased the degrees of freedom of the layout below engine block.Because air inlet component is arranged on the opposite side of the side that automatic transmission is set with respect to left and right directions, so has avoided the interference between air inlet component and the automatic transmission effectively, thereby can realize more effective layout.
The motor that is used for Straddle type vehicle can comprise with live axle and separates the subband wheel shaft that forms and be engaged in the secondary pulley.
In this way, by subband wheel shaft and live axle are formed apart from each other, can further increase the degrees of freedom of layout.
Preferably, the motor that is used for Straddle type vehicle comprises and is used to hold the gearbox of automatic transmission and includes at the upwardly extending jack shaft of right and left and be connected to reducing gear on subband wheel shaft and the live axle, bent axle extends upward at right and left, secondary pulley is arranged on the live axle top, when jack shaft when side direction is seen from the imaginary line at the center of the center that connects live axle and secondary pulley towards the main pulley setting, when live axle when side direction is seen is arranged in the profile of gearbox.
For this motor, secondary pulley is arranged on the live axle top, thereby makes the lower dimension of motor very little.Thereby, can guarantee be used for there is big space below the motor of Straddle type vehicle.And, since when jack shaft when side direction is seen from the imaginary line at the center of the center that connects live axle and subband wheel shaft towards the main pulley setting, so can make motor small-sized on the opposition side of main pulley side.For example, be arranged at main pulley under the situation of front side of motor, can make the rear size of motor very little.Thereby, can guarantee to have big space at the rear of the motor that is used for Straddle type vehicle.In addition, owing to be arranged in the profile of gearbox when live axle when side direction is seen, so can in this motor, live axle and automatic transmission be set with high density.
In addition, because above-mentioned various factors, that is, be used for space-saving multiple factor and combine, therefore promoted to be used for the minimizing of motor of Straddle type vehicle.
Straddle type vehicle according to the present invention comprises the aforesaid motor that is used for Straddle type vehicle.
Straddle type vehicle can comprise include head pipe (head pipe), from the beginning pipe is backward and the side arm that extends downwards obliquely and from the side arm car body of upwardly extending after-frame backward and obliquely, the engine mounting that this car body will be used for Straddle type vehicle is positioned at live axle under the state at bent axle rear, and cylinder block can be by the state support to hang from side arm.
Thereby, in so-called Straddle type vehicle, realized effective setting of motor.
Straddle type vehicle can comprise that the engine mounting that will be used for Straddle type vehicle is positioned at car body under the state at bent axle rear, is bearing on this car body so that can swing and be used for the postbrachium of supporting wheels and extend so that from the driving force driving component of driving axial trailing wheel transmission of drive force at fore-and-aft direction upper edge postbrachium at live axle.
Usually, passing through the driving force driving component in the vehicle of trailing wheel transmission of drive force, the influence of the friction in the motor is to become very big easily, but the influence that in motor of the present invention, can suppress to rub.
When side direction is seen, the supporting point of postbrachium on car body can be positioned at the rear of the motor that is used for Straddle type vehicle.
Postbrachium can be positioned at the supporting point on the car body secondary pulley axis below.
Postbrachium is near the supporting point on the car body can be positioned at the live axle rear.
Thereby, can suppress when postbrachium reducing around the transmission efficiency of supporting point when swing driving force driving component.
As mentioned above,, the compact motor that is used for Straddle type vehicle be can realize, V banding pattern stepless speed variator and subsidiary engine in this motor, are provided with effectively according to the present invention.
Description of drawings
Fig. 1 illustrates the left view of motorcycle according to an embodiment of the invention;
Fig. 2 illustrates the perspective cutaway view, in motor left side according to an embodiment of the invention;
Fig. 3 is the sectional view along the line III-III among Fig. 2;
Fig. 4 is the partial sectional view that engine unit is shown;
Fig. 5 is the sectional view along the line V-V among Fig. 2;
Fig. 6 is the left view that the engine unit of the position relation between starter motor (starting electrical machinery), bent axle, balace weight axle and the live axle etc. is shown.
Description of symbols:
1 motorcycle (Straddle type vehicle)
16 automatic transmission
19 cylinder block
The 19b cylinder
22 crankcases
28 bent axles
48 live axles
55 main pulleys
56 secondary pulley
57 V are with (driving belt)
129a balace weight counterweight (subsidiary engine)
154 air inlet components
The center line of A cylinder
The axis of B bent axle
Embodiment
Below with reference to the description of drawings embodiments of the invention.But embodiment described below exemplarily illustrates the present invention, and the present invention is not limited only to present embodiment.Therefore, the present invention can realize with multiple structure, only otherwise break away from its main points.In addition, the front, rear, left and right in the present embodiment are meant when being sitting in forward and backward (direction of travel is corresponding to the place ahead) under the state in the motorcycle seat and left and right.
Fig. 1 illustrates the motorcycle 1 that is equipped with according to the motor of present embodiment.Although will describe in detail below, has built-in continuously variable transmission according to the motor of present embodiment.Head pipe 3 is fixed on the front end of frame 1a.Front fork 5 is by 3 supportings of head pipe, so that can turn on left and right directions.Front-wheel 4 is bearing on the lower end of front fork 5, so that can rotate.
Back arm support 6 is arranged on the central authorities of frame along fore-and-aft direction.Postbrachium 8 is supported by back arm support 6 by pivotal axis (supporting point) 100.Postbrachium 8 is supported pivotly by pivotal axis 100.Therefore, postbrachium 8 is arranged to center on pivotal axis 100 vertical oscillations.Trailing wheel 7 can be rotated to support on the rear end of postbrachium 8.Vehicle seat 9 is arranged on the top of frame 1a.Vehicle seat 9 is made of operator's seat part 9a and rear portion occupant's seat part 9b.Although will describe in detail below, engine unit 2 is installed on the frame 1a with following state, that is, live axle 48 (see figure 3)s that are used to export rotary driving force are positioned at the rear of bent axle 28.And for engine unit 2, the pivotal axis 100 of postbrachium 8 is arranged on the rear of engine unit 2, and is arranged on live axle 48 rears and close this live axle 48.
As shown in Figure 1, frame 1a comprise from the beginning manage 3 extend back and the downward pipe 1b of downward-sloping extension, be connected to the rear end of downward pipe 1b and be inclined upwardly and extend upwards manage 1c and be connected to downward pipe 1b and manage upwards that 1c goes up so that on fore-and-aft direction, they are bridged to together vehicle seat track 1d.In addition, manage downwards 1b, upwards manage the left and right sides that 1c and vehicle seat track 1d are separately positioned on car body.
Explain the structure of engine unit 2 below with reference to Fig. 2 to 6.
As shown in Figure 3, engine unit 2 comprises engine block 15, V banding pattern CVT (continuously variable transmission) 16, wet multi-disc centrifugal clutch 17 and reducing gear 18.
To the rear surface of cylinder head 20 opening is the suction port (not shown) that is communicated with firing chamber recess 20a.Carburetor 23 is connected to the suction port (see figure 1) by suction tude 23a.In addition, though extend back according to present embodiment suction tude 23a, suction tude 23a also can extend (seeing the double dot dash line among Fig. 2) forward.On the other hand, are the relief opening (not shown) that are communicated with firing chamber recess 20a to the front surface opening of cylinder head 20.Outlet pipe 24 (see figure 1)s are connected to relief opening.As shown in Figure 1, outlet pipe 24 extends downwards backward and obliquely, and the right side of passing motor 15 extends upward backward and obliquely, and is connected to silencing apparatus 25.In addition, silencing apparatus 25 is arranged on the right side of trailing wheel 7.As shown in Figure 3, spark plug 30 is inserted into recess 20a inside, firing chamber.
Be formed with chain chamber 19a in the left side of cylinder block 19, so that the inside of crankcase 22 and the inside of cylinder head 20 are linked together.In chain chamber 19a, be provided with timing chain 34.This timing chain 34 twines around bent axle 28 and camshaft 31.Camshaft 31 rotates along with the rotation of bent axle 28, so that open and close intake valve and exhaust valve, described intake valve and exhaust valve are not shown.
But the driving component that transmits the rotary driving force of bent axle 28 to camshaft 31 is not limited to timing chain 34.For example, driving belt, push rod etc. also can be used as driving component.
The generator case 44 that accommodates generator 42 is removably mounted on the front left side of first casing 40.The gearbox 45 that accommodates automatic transmission 16 is installed in the right side of second casing 41.Automatic transmission 16 is contained in by gearbox 45 separated speed changers indoor.
The right-hand member of bent axle 28 is crossed second casing 41 and is extended into gearbox 45.The main pulley of automatic transmission 16 (driving pulley) 55 is co-axially mounted on the right-hand member of bent axle 28.Therefore, main pulley 55 rotates along with the rotation of bent axle 28.In addition, the right-hand member of bent axle 28 forms the master tape wheel shaft.But the joint construction of main pulley 55 and bent axle 28 is not limited to above-mentioned structure.Main pulley and bent axle 28 can form apart from each other.The master tape wheel shaft not necessarily is arranged to bent axle 28 coaxial, but can be arranged to for example be parallel to bent axle 28.And " connection " in the present specification is meant the connection of broad sense, if do not specify, is meant direct connection and is connected indirectly.
On the other hand, the left end of bent axle 28 is crossed first casing 40 and is extended into generator case 44.Generator 42 is installed in the left end of bent axle 28.Sealing 37 is arranged between the diapire 45c of part that the bent axle 28 on the right-hand member surface of second casing 41 extends through and gearbox 45.Therefore, second casing 41 is with respect to gearbox 45 sealings.Therefore, wet clutch can be as the clutch that is contained in second casing 41.As mentioned above, according to present embodiment, use wet multi-disc centrifugal clutch 17 as above-mentioned clutch.
Centrifugal clutch 17 is installed in the left part of subband wheel shaft 47.Centrifugal clutch 17 is arranged on the left side of secondary pulley 56, that is, and and towards cylinder block 19.Realize that this layout is because the inner space of second casing 41 is very big.That is, for engine unit 2, the parting surface D of crankcase 22 is offset left from the center line A of cylinder 19b, to guarantee forming big space in second casing 41.Therefore, centrifugal clutch 17 can be arranged on the left side of secondary pulley 56.
Centrifugal clutch mechanism 17 is the wet multi-disc type, and comprises internal clutch 84 and cup-shaped outer clutch 83.This outer clutch 83 is assembled to subband wheel shaft 47 by spline also can moving axially to subband wheel shaft 47 so that can rotate with wheel set belt shaft 47.Internal clutch 84 coaxial being arranged in the outer clutch 83.Internal clutch 84 splines are assembled to main reduction pinion teeth 74, and this reduction pinion teeth 74 is with internal clutch 84 rotations.In addition, this reduction pinion teeth 74 can be rotated to support on the subband wheel shaft 47.
As shown in Figure 4, a plurality of outer clutch plates 85 are arranged in the outer clutch 83.Push pedal 86 is separately positioned on the left end and the right-hand member of outer clutch plate 85.Outer clutch plate 85 and push pedal 86 are locked on the outer clutch 83, so that together rotate with outer clutch 83.Internal clutch plate 87 is arranged between outer clutch plate 85 and the push pedal 86.Internal clutch plate 87 is locked on the periphery of internal clutch 84, so that together rotate with internal clutch 84.
Be formed with outstanding nonreentrant surface 83a outside in the clutch 83 left.Between nonreentrant surface 83a and right push pedal 86, be provided with counterweight 88.When the rotational speed of outer clutch 83 surpassed predetermined speed, counterweight 88 was subjected to action of centrifugal force and radially outwards moves.Because nonreentrant surface 83a is formed on the inside of outer clutch 83, therefore, when counterweight 88 radially outside when mobile right side push pedal 86 pushed away left and be moved to the left by counterweight 88.Thereby outer clutch plate 85 is connected to each other together with internal clutch plate 87.That is, clutch is in jointing state.In addition, Fig. 3 and Fig. 4 illustrate the front side that is in disengaged state (upside among Fig. 3 and 4) of centrifugal clutch 17, and the rear side (downside among Fig. 3 and 4) that is in jointing state.
V banding pattern CVT (continuously variable transmission) 16 is with 57 to constitute by main pulley 55, secondary pulley 56 and around the V that main pulley 55 and secondary pulley 56 are twined.As mentioned above, main pulley 55 is installed in the right-hand member of bent axle 28.Therefore, the driving force of bent axle 28 is delivered on the main pulley 55.Secondary pulley 56 is connected to the right-hand member of subband wheel shaft 47.
For automatic transmission 16, reduction speed ratio is released used power and helical spring 67 by counterweight 61 to the right with the active semi-wheel 55b of driving side the active semi-wheel 56b of slave end is rolled back quantitative relation decision between the used power left.That is, when the rotational speed of bent axle 28 increased, counterweight 61 was subjected to action of centrifugal force and radially outwards moves (upside among Fig. 4), and the active semi-wheel 55b of driving side is moved right.Thereby along with like this, the active semi-wheel 56b of slave end also resists the bias force of helical spring 67 and moves right.As a result, V increases with 57 diameters that twine around driving wheel 55, and this V band reduces around the diameter that follower 56 twines.Therefore, reduction speed ratio reduces.On the other hand, when the rotational speed of bent axle 28 reduced, the centrifugal force that produces on the counterweight 61 reduced, thereby counterweight 61 radially moves inward.Therefore, the active semi-wheel 55b of driving side trends towards being moved to the left.Then, the active semi-wheel 56b of slave end is subjected to the bias of helical spring 67 and is moved to the left, and the active semi-wheel 55b of driving side also correspondingly is moved to the left.As a result, V reduces with 57 diameters that twine around driving wheel 55, and this V band increases around the diameter that follower 56 twines.Therefore, reduction speed ratio increases.
Locking nut 66 is threaded on the top of subband wheel shaft 47, and secondary pulley 56 is fixed on the subband wheel shaft 47 by locking nut 66.Locking nut 66 sinks in the right-hand member 62a of sliding collar 62.The internal diameter of sliding collar 62 progressively increases vertically.On the other hand, the right-hand member 47a of subband wheel shaft 47 progressively reduces.That is, the diameter of subband wheel shaft 47 progressively reduces towards its top.
Because engine unit 2 has adopted this structure, so locking nut 66 can not have the right-hand member 62a inboard that is arranged on sliding collar 62 with hindering.Therefore, locking nut 66 can be positioned at the left side of the spring support 65 that is used for helical spring 67.Thereby the outside (right side) projection can limit lessly, and helical spring 67 is shortened itself.That is, use simple structure to realize minimize (width minimizes) of engine unit 2.
As shown in Figure 2, balace weight axle 129 upwards is provided with backward and obliquely from bent axle 28, and parallel with bent axle 28.As shown in Figure 5, the right-hand member of balace weight axle 129 is bearing on second casing 41 by bearing 131.On the other hand, the bearing 130 that passes on left of the central part of balace weight axle 129 is bearing on first casing 40.The left end of balace weight axle 129 extends to first casing, 40 outsides.Balace weight gear 132 is fixed on the left end of the balace weight axle 129 that extends out from first casing 40.
Left and right crankweb 28a, the 28b of bent axle 28 are between bearing 130,131.The balace weight counterweight 129a (see figure 2) of balace weight axle 129 is arranged between crankweb 28a, the 28b.In addition, balace weight counterweight 129a (see figure 2) is arranged on the position near bent axle 28, so as overlapping with the rotating locus of crank pin 29, as shown in Figure 2.Like this, balace weight axle 129 around parts (balace weight counterweight 129a etc.) that density is set is higher.And from side direction, balace weight axle 129 is arranged in the profile of gearbox 45.In addition, balace weight axle 129, balace weight counterweight 129a etc. constitute balace weight generally.
As shown in Figure 5, first actuation gear 121 is force-fitted on the bent axle 28.Second actuation gear 127 is installed on first actuation gear 121, so that together rotate with first actuation gear 121.Second actuation gear 127 is meshed with balace weight gear 132.For this structure, the rotation of bent axle 28 is delivered to balace weight axle 129 by first actuation gear 121, second actuation gear 127 and balace weight gear 132.
Overrunning clutch 120, first actuation gear 121 and cam sprocket wheel 122 are installed between the axle sleeve 43 of the bearing 35 of supporting crankshaft 28 and generator 42 successively from left to right.Starter receiver 120a is installed on the overrunning clutch 120.Starter receiver 120a is connected on the actuation gear 125a of starter motor 125 by intermediate gear 124.
Below with reference to Fig. 2 the position relation on the direction of the imaginary line of the axis of axis that connects bent axle 28 and subband wheel shaft 47 between bent axle 28, balace weight axle 129 and the starter motor 125 is described.At first, balace weight axle 129 is provided with towards subband wheel shaft 47 from bent axle 28.Starter motor 125 further is provided with towards subband wheel shaft 47 from balace weight axle 129.But starter motor 125 is provided with towards bent axle 28 from subband wheel shaft 47.From side direction, starter motor 125 is arranged in the profile of gearbox 45.As shown in Figure 5, the actuation gear 125a of starter motor 125 is parallel to bent axle 28 extensions and is arranged on compared with motivation 125 more by the motor inboard.
As shown in Figure 3, reducing gear 18 comprises the jack shaft (deboost axle) 52 that is parallel to subband wheel shaft 47.Reduction gear 75 is connected on this jack shaft 52, so that mesh with main reduction pinion teeth 74.In addition, main reduction pinion teeth 74 can be rotatably set on the subband wheel shaft 47.And secondary reduction pinion teeth 76 forms one with jack shaft 52.Reduction gear 77 forms one with live axle 48, so that mesh with secondary reduction pinion teeth 76.
The right-hand member of jack shaft 52 is bearing in the left part of second casing 41 by bearing 91.The left end of jack shaft 52 can be rotated to support on the left part of first casing 40.
As shown in Figure 6, from side direction, the axis C of bent axle 28 is from center line (so-called hole central axis) the A skew of cylinder 19b.In Fig. 6, symbol A1 represents the center line of cylinder 19b when the axis C of the center line of cylinder 19b and bent axle 28 intersects.That is, symbol A1 represents the center line of cylinder 19b when not being offset between the center line of the axis C of bent axle 28 and cylinder 19b.According to present embodiment, the axis C of bent axle 28 is from upwards (more specifically, making progress backward and obliquely) skew of center line A of cylinder 19b.In other words, cylinder 19b is from the axis C of bent axle 28 (more specifically, forward and downward obliquely) skew downwards.
Therefore, can guarantee to exist in the top in engine unit 2 or above the engine unit 2 bigger space.More specifically, can guarantee that there is bigger space in the position above the center line A of position above the imaginary line of axle (that is the right-hand member of bent axle 28) that connects main pulley 55 and subband wheel shaft 47 and cylinder 19b.Therefore, the subsidiary engine (balace weight counterweight 129a etc.) and the air inlet component 154 of motor can be set in this space effectively.Even can be provided with effectively to bent axle 28 transferring power or from bent axle 28 to its transferring power and axial length greater than the subsidiary engine of diameter length (for example, balace weight, starter motor, generator, auxiliary drive motor etc.) separately.
And,, therefore can reduce the slip resistance of piston 26 owing to make bent axle 28 biasings.Therefore,, equipment can be set effectively, can be suppressed to very little degree to the influence of in-engine friction simultaneously according to present embodiment.
Herein, the layout of decision design air inlet component 154.For example, in engine unit 2, the opposition side (left side) of a side that automatic transmission 16 is set is formed with very big free space because automatic transmission 16 is not set.Therefore, at least a portion air inlet component 154 can be arranged in this free space, to avoid and automatic transmission 16 interference.
In order to shorten the length of engine unit 2 on fore-and-aft direction, subband wheel shaft 47 can be arranged on the top of the axle of main pulley 55.In this case, for air inlet component 154 is set above engine unit 2, air inlet component 154 preferably is arranged to avoid secondary pulley 56.If secondary pulley 56 is arranged on the top of engine unit 2, can guarantee below engine unit 2, to have redundant space.Therefore, can guarantee around live axle 48, to have free space, thereby can increase the degrees of freedom of the layout of live axle 48.As a result, for example can make live axle 48 (see figure 1) is set near pivotal axis 100.
The situation that is arranged on the side direction of engine unit with air inlet component 154 is compared, and by air inlet component 154 being arranged on the top of engine unit 2, can improve occupant's performance of motorcycle 1 up and down.
And from side direction, at least a portion air inlet component 154 can be to be provided with secondary pulley 56 equitant modes.For this set, air inlet component 154 can be arranged on engine unit 2 tops, guarantee enough loading spaces simultaneously.
Incidentally, be delivered to via driving component-for example chain 50, driving belt, live axle etc. from live axle 48 motorcycle etc. of the Straddle type vehicle of trailing wheel 7-for example, be difficult to increase the distance between live axle 48 and the trailing wheel 7 in driving force.Therefore, live axle 48 is subjected to a certain degree restriction with respect to the position of car body.In contrast, can more freely determine the position of the jack shaft 52 of installation subband wheel shaft 47 and reducing gear 18.Therefore, for engine unit 2, subband wheel shaft 47 separates with live axle 48, and has further designed the position of subband wheel shaft 47 and jack shaft 52 is installed, thereby has produced the following effect that will illustrate.
That is,, because subband wheel shaft 47 is separated from one another with live axle 48, therefore can change the setting of subband wheel shaft 47, and not be activated the restriction of axle 48 for engine unit 2.And,, can make bottom small-sized of engine unit 2 and can guarantee below engine unit 2, to exist than large space by subband wheel shaft 47 being arranged on live axle 48 tops.And, as shown in Figure 2, because jack shaft 52 is arranged on the place ahead (towards main pulley 55) of the imaginary line that connects live axle 48 and subband wheel shaft 47, therefore can makes rear portion small-sized of engine unit 2 and can guarantee to exist than large space at engine unit 2 rears.In addition, owing to see that from side direction live axle 48 is arranged in the profile of gearbox 45, therefore live axle 48 and reducing gear 18 can be set effectively in engine unit 2.
As shown in Figure 3, for engine unit 2, chain chamber 19a and automatic transmission 16 are arranged on side respect to one another, and cylinder 19b is arranged between them.Therefore, compare with the situation that automatic transmission 16 is arranged on the same side, can make the structure and the layout of parts of engine unit 2 simple, and can prevent the fault of the automatic transmission 16 that the action by timing chain 34 causes with chain chamber 19a.In addition, can shorten the bent axle 28 (that is master tape wheel shaft) that is coupled in the main pulley 55.Therefore, can improve the axle rigidity of bent axle 28, thereby can support main pulley 55, and need not top, therefore can make main pulley 55 cantilever settings by supporting crankshafts such as bearing 28.
As shown in Figure 2, starter motor 125 is arranged on the upside of engine unit 2.Therefore, promptly convenient motorcycle 1 makes water etc. from splashing on the ground when travelling, and needn't worry that also water etc. splashes on the starter motor 125.
In addition, according to present embodiment, as shown in Figure 5, between the actuation gear 125a of starter receiver 120a and starter motor 125, has only an intermediate gear 124.But, an intermediate gear 124 not only can be arranged certainly, and two or more intermediate gears can be arranged.
And, according to present embodiment, as shown in Figure 3, reduction gear 18 is by being arranged on main reduction pinion teeth 74 on the subband wheel shaft 47, being arranged on final gear 75 on the jack shaft 52, being arranged on the secondary reduction pinion teeth 76 on the jack shaft 52 and the secondary reduction gear 77 that is arranged on the live axle 48 constitutes.But reducing gear is not limited to the as above reduction gear 18 of structure.For example, in reduction gear 18, can omit jack shaft 52 and final gear 75, and the reduction gear 77 that is arranged on the live axle 48 can mesh with the reduction pinion teeth 74 that is arranged on the subband wheel shaft 47.
For motorcycle 1,, therefore can improve operational stability because postbrachium 8 can increase.And pivotal axis 100 can be positioned at the below of the axis of subband wheel shaft 47.And, can make live axle 48 and pivotal axis 100 close to each other.Therefore, can reduce the lax of the chain 50 that twines around live axle 48 during around pivotal axis 100 swings when postbrachium 8.Therefore, the transmission efficiency of the driving force that is used for trailing wheel 7 can be improved, and the lax noise that causes can be suppressed by chain 50.
In addition, according to present embodiment, the driving force driving component that is used to transmit the driving force of live axle 48 comprises chain 50.But the driving force driving component is not limited to chain 50, but can comprise driving belt, live axle etc.Be convenient live axle etc. during,, also can produce roughly the same effect because the distance between live axle 48 and the pivotal axis 100 is very short as driving component.That is, can suppress reducing when the transmission efficiency of postbrachium 8 driving force during around pivotal axis 100 swings.
Like this, pivotal axis 100 preferably is arranged near the rear of live axle 48.In addition, herein indication " near " be not restrictive, but wish to be positioned at the diameter of secondary pulley 56, particularly wish to be positioned at the radius of secondary pulley 56.
Industrial applicability
As mentioned above, the present invention be suitable for use in Straddle type vehicle-such as the engine of motorcycle etc. and Straddle type vehicle.
Claims (15)
1. motor that is used for Straddle type vehicle comprises:
Be formed with the cylinder block of cylinder in it;
Be arranged in this cylinder with pistons reciprocating in this cylinder;
The bent axle that rotates along with the to-and-fro motion of piston, when along axially the seeing of this bent axle, the axis of this bent axle is from the upwards skew of center line of described cylinder;
When along axially the seeing of described bent axle, be arranged on the subsidiary engine of described bent axle top, its be used for to described crankshaft or from described bent axle to its transferring power;
The live axle of output rotary driving force; And
Automatic transmission, this automatic transmission comprise the main pulley that rotates along with described crankshaft rotating, the driving belt that is connected to the secondary pulley on the described live axle and twines around described main pulley and described secondary pulley directly or indirectly.
2. according to the motor that is used for Straddle type vehicle of claim 1, it is characterized in that when along axially the seeing of described bent axle, described subsidiary engine is arranged on the top of imaginary line at the center of the center that connects described main pulley and described secondary pulley.
3. according to the motor that is used for Straddle type vehicle of claim 1, it is characterized in that this subsidiary engine comprises balace weight.
4. according to the motor that is used for Straddle type vehicle of claim 1, it is characterized in that, also comprise:
Be connected the cylinder head on the described cylinder block;
Be arranged on intake valve or exhaust valve on the described cylinder head;
Be arranged in the described cylinder head to open and close the cam mechanism of described valve; And
Be used for transmitting the driving component of the rotary driving force of described bent axle to described cam mechanism;
Wherein, described cylinder block is separated into the driving component accommodating chamber that is used to hold described driving component, and
Described cylinder with respect to described bent axle axially between described driving component accommodating chamber and described automatic transmission.
5. according to the motor that is used for Straddle type vehicle of claim 1, it is characterized in that described main pulley is arranged on the described bent axle with cantilevered fashion.
6. according to the motor that is used for Straddle type vehicle of claim 1, it is characterized in that, also comprise:
Be used to hold the crankcase of described at least bent axle; And
Be connected to the air inlet component on the described cylinder head directly or indirectly;
Wherein, be arranged on described cylinder block or described crankcase top to the described air inlet component of small part.
7. according to the motor that is used for Straddle type vehicle of claim 1, it is characterized in that, also comprise:
Be connected the air inlet component on the cylinder head directly or indirectly; And
Be used to hold the crankcase of described at least bent axle;
Wherein, described cylinder block and described crankcase constitute engine block, described bent axle extends upward at right and left, described automatic transmission is arranged on the left side or the right side of described engine block, described secondary pulley is arranged on described main pulley top, and described air inlet component is arranged on described engine block top, and is positioned at the opposition side of the side that described automatic transmission is set with respect to left and right directions.
8. according to the motor that is used for Straddle type vehicle of claim 1, it is characterized in that, also comprise with described live axle and separate the subband wheel shaft that forms and be engaged in the described secondary pulley.
9. the motor that is used for Straddle type vehicle according to Claim 8 is characterized in that, also comprises:
Be used to hold the gearbox of described automatic transmission; And
Reducing gear, this reducing gear are included in the upwardly extending jack shaft of right and left and are connected on described subband wheel shaft and the described live axle;
Wherein, described bent axle extends upward at right and left, described secondary pulley is arranged on described live axle top, when described jack shaft when side direction is seen from the imaginary line at the center of the center that connects described live axle and described secondary pulley towards described main pulley setting, and be arranged in the profile of described gearbox when described live axle when side direction is seen.
10. one kind comprises the Straddle type vehicle according to the motor that is used for Straddle type vehicle of claim 1.
11. Straddle type vehicle according to claim 10, it is characterized in that, also comprise and include head pipe, backward and the side arm that extends obliquely and downwards from the described side arm car body of upwardly extending after-frame backward and obliquely from described head pipe, the engine mounting that described car body will be used for described Straddle type vehicle is positioned at described live axle under the state at described bent axle rear, and described cylinder block is by the state support to hang from described side arm.
12. the Straddle type vehicle according to claim 10 is characterized in that, also comprises:
The engine mounting that is used for being used for described Straddle type vehicle is positioned at the car body under the state at described bent axle rear at described live axle;
Support described on car body the postbrachium can swing, be used for supporting wheels; And
Described postbrachium extends in the fore-and-aft direction upper edge with the driving force driving component from the described trailing wheel transmission of drive force of described driving axial.
13. the Straddle type vehicle according to claim 12 is characterized in that, when when side direction is seen, the supporting point of described postbrachium on described car body is positioned at the rear of the motor that is used for described Straddle type vehicle.
14. the Straddle type vehicle according to claim 13 is characterized in that, described postbrachium be positioned at the supporting point on the described car body described secondary pulley axis below.
15. the Straddle type vehicle according to claim 13 is characterized in that, described postbrachium is near the supporting point on the described car body is positioned at the live axle rear.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003363564A JP2007022098A (en) | 2003-10-23 | 2003-10-23 | Engine for saddle-riding type vehicle and saddle-riding type vehicle with the same |
| JP363564/2003 | 2003-10-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1871417A true CN1871417A (en) | 2006-11-29 |
| CN100520010C CN100520010C (en) | 2009-07-29 |
Family
ID=34510054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200480030958XA Active CN100520010C (en) | 2003-10-23 | 2004-10-06 | Engine for saddle riding-type vehicle and saddle riding-type vehicle with the same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2007022098A (en) |
| CN (1) | CN100520010C (en) |
| WO (1) | WO2005040579A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852128A (en) * | 2009-03-31 | 2010-10-06 | 本田技研工业株式会社 | The internal-combustion engine of band kick-type starter |
| CN101987643A (en) * | 2009-08-03 | 2011-03-23 | 本田技研工业株式会社 | Auxiliary engine structure of power unit for vehicle |
| CN101327829B (en) * | 2007-06-22 | 2011-10-12 | 本田技研工业株式会社 | Power unit for motorcycle |
| CN101932497B (en) * | 2007-09-28 | 2013-04-10 | 本田技研工业株式会社 | Small-sized vehicle |
| CN101804848B (en) * | 2009-02-17 | 2013-05-29 | 本田技研工业株式会社 | Engine for two-wheel motorcycle |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4530926B2 (en) * | 2005-07-04 | 2010-08-25 | ヤマハ発動機株式会社 | Power unit and straddle-type vehicle equipped with the power unit |
| JP4767603B2 (en) * | 2005-07-04 | 2011-09-07 | ヤマハ発動機株式会社 | Power unit and straddle-type vehicle equipped with the power unit |
| JP2008143511A (en) | 2006-11-15 | 2008-06-26 | Yamaha Motor Co Ltd | Vehicle body frame and vehicle |
| JP5091062B2 (en) * | 2008-09-02 | 2012-12-05 | 本田技研工業株式会社 | Vehicle engine |
| CN101985898A (en) * | 2010-12-10 | 2011-03-16 | 隆鑫通用动力股份有限公司 | Engine and gearbox mounting structure of micro-farming machine |
| JP7008837B2 (en) * | 2018-09-25 | 2022-01-28 | 本田技研工業株式会社 | Power unit for saddle-riding vehicles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54160907A (en) * | 1978-05-17 | 1979-12-20 | Mitsubishi Heavy Ind Ltd | Offset cylinder type reciprocating engine |
| JPS63137088A (en) * | 1986-11-29 | 1988-06-09 | 本田技研工業株式会社 | Transsion-case cooling device for car |
| JP2979014B2 (en) * | 1990-11-30 | 1999-11-15 | ヤマハ発動機株式会社 | V-belt automatic transmission for motorcycles |
| JP2528623B2 (en) * | 1994-03-18 | 1996-08-28 | ヤマハ発動機株式会社 | Scooter type motorcycle equipped with a 4-cycle engine |
| JP2003293787A (en) * | 2002-04-08 | 2003-10-15 | Yamaha Motor Co Ltd | Engine |
-
2003
- 2003-10-23 JP JP2003363564A patent/JP2007022098A/en active Pending
-
2004
- 2004-10-06 WO PCT/JP2004/014719 patent/WO2005040579A1/en not_active Application Discontinuation
- 2004-10-06 CN CNB200480030958XA patent/CN100520010C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327829B (en) * | 2007-06-22 | 2011-10-12 | 本田技研工业株式会社 | Power unit for motorcycle |
| CN101932497B (en) * | 2007-09-28 | 2013-04-10 | 本田技研工业株式会社 | Small-sized vehicle |
| TWI451992B (en) * | 2007-09-28 | 2014-09-11 | Honda Motor Co Ltd | Small vehicle |
| CN101804848B (en) * | 2009-02-17 | 2013-05-29 | 本田技研工业株式会社 | Engine for two-wheel motorcycle |
| CN101852128A (en) * | 2009-03-31 | 2010-10-06 | 本田技研工业株式会社 | The internal-combustion engine of band kick-type starter |
| CN101852128B (en) * | 2009-03-31 | 2013-01-30 | 本田技研工业株式会社 | Internal combustion engine with kick-type starter |
| CN101987643A (en) * | 2009-08-03 | 2011-03-23 | 本田技研工业株式会社 | Auxiliary engine structure of power unit for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007022098A (en) | 2007-02-01 |
| WO2005040579A1 (en) | 2005-05-06 |
| CN100520010C (en) | 2009-07-29 |
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