CN105317500B - Engine and vehicle - Google Patents
Engine and vehicle Download PDFInfo
- Publication number
- CN105317500B CN105317500B CN201510276226.9A CN201510276226A CN105317500B CN 105317500 B CN105317500 B CN 105317500B CN 201510276226 A CN201510276226 A CN 201510276226A CN 105317500 B CN105317500 B CN 105317500B
- Authority
- CN
- China
- Prior art keywords
- camshaft
- counterweight
- flange
- cam
- pivot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/08—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The present invention provides a kind of engine and vehicle.The mechanism of decompressor includes flange, trunnion, counterweight and relief cam.Flange and camshaft are splits, and the flange is pressed into camshaft.Trunnion is installed on flange.Counterweight is supported in flange via trunnion in the way of it can be rotated between closed state and open state.The rotation of relief cam and counterweight correspondingly, switches to the state contacted with valve mechanism or the state not contacted with valve mechanism.
Description
Technical field
The present invention relates to the engine including the mechanism of decompressor and vehicle.
Background technology
When starting engine, it is necessary to rotate engine by external force, until start completion.Pass through for example, existing
Dynamic motor makes the method that it rotates and/or made by kick-starter it to rotate.On the other hand, in the compression of engine
Air in stage, cylinder is compressed, so the resistance increase of rotation.In order to lower such resistance, it is known to for logical
The compression stage that external force is crossed when rotating engine lowers the mechanism of decompressor of the pressure in cylinder.
For example, the mechanism of decompressor of the engine disclosed in Japanese Unexamined Patent Publication 2008-128171 has the rotation by counterweight
And switch to working condition or release the relief cam of state.The mechanism of decompressor is supported in the sprocket wheel of cam chain.Accordingly, there exist bag
The camshaft for including the mechanism of decompressor becomes this big problem in the axial direction.
In the engine disclosed in Japanese Unexamined Patent Publication 2008-64083, the mechanism of decompressor be configured at camshaft both ends it
Between position.The mechanism of decompressor has a counterweight and relief cam, and counterweight is support shaft to be supported in cam by way of can rotating
Axle.Relief cam and counterweight are rotated by pin connection by counterweight centered on support shaft, and pin rotates relief cam.
In the mechanism of decompressor of Japanese Unexamined Patent Publication 2008-64083, the sky between the two ends of camshaft can be effectively utilized
Between.Therefore, compared with the situation outside the mechanism of decompressor is configured at camshaft, sometimes the camshaft for including the mechanism of decompressor can be made to exist
Formed compactly on axial direction.
The content of the invention
Problems to be solved by the invention
In the mechanism of decompressor of Japanese Unexamined Patent Publication 2008-64083, the exhaust that the support shaft of counterweight is installed on camshaft is convex
Wheel.In this case, from the viewpoint of installation strength, it is preferred that be used for the part point for installing support shaft in exhaust cam
Configure with not separating distance to a certain degree with the outer peripheral face and inner peripheral surface of exhaust cam.But, due to the basic circle of exhaust cam
The size of the radial direction in portion is smaller, therefore, and the installation site of support shaft is restricted.
In this regard, the size of the radial direction of the nose of cam of exhaust cam is bigger than the size of the radial direction in basic circle portion, therefore, radially
The free degree of the installation site of upper support shaft is high.But, generally in the circumference of exhaust cam, the scope of nose of cam compares basic circle
The scope in portion is small.Therefore, the installation site of support shaft is restricted in the circumference of exhaust cam.
The restriction of the configuration of support shaft as described above can be eliminated by increasing exhaust cam.But, if exhaust is convex
Wheel becomes big, then camshaft and valve mechanism become big.Further, since camshaft and valve mechanism become big, camshaft and gas
The actuating range of door mechanism also becomes big.Even if as a result, the mechanism of decompressor is configured at the position between the both ends of camshaft, starting
Machine also maximizes.
The problem of the present invention is, in the engine of the position between the mechanism of decompressor is configured at the both ends of camshaft,
The free degree of the configuration of trunnion is improved, and seeks the densification of engine.
The means used to solve the problem
The engine of the mode of the present invention includes cylinder cover, exhaust valve, valve mechanism, camshaft, bearing and decompression
Mechanism.Exhaust valve is placed in cylinder cover.Exhaust valve is opened and closed valve mechanism.Camshaft is driven by being contacted with valve mechanism
Valve actuator.Camshaft is supported in cylinder cover by bearing in the way of it can rotate.The mechanism of decompressor is configured at the axle of camshaft
Between both ends on line direction.The mechanism of decompressor includes flange, trunnion, counterweight and relief cam.Flange and camshaft are point
Body, the flange is pressed into camshaft.Trunnion is installed on flange.Counterweight is via trunnion with can be between closed state and open state
The mode of rotation is supported in flange.The rotation of relief cam and counterweight correspondingly, switch to the state that is contacted with valve mechanism or
The state not contacted with valve mechanism.
In the engine of the manner, because flange is pressed into camshaft, therefore, it is possible to freely set flange in press-in
Relative to the position of camshaft in the circumferential.Further, since flange and camshaft are splits, and therefore, even if flange becomes big,
Camshaft, valve mechanism and camshaft can be suppressed, the actuating range of valve mechanism becomes big.Therefore, engine can be made tight
Gathering, can improve the free degree of the configuration of trunnion again.
Preferably, relief cam is supported in flange.In this case, because both counterweight and relief cam are supported in
Flange, therefore, the position only by changing flange relative to camshaft, it becomes possible to do not change the relative position of counterweight and relief cam
Change the position of counterweight and relief cam relative to camshaft with putting.
Preferably, from the radial direction of camshaft, a part for counterweight is overlapping with flange.In this case, it can make
Camshaft including the mechanism of decompressor is compactly formed in the axial direction.
Preferably, from the axis direction of camshaft, the gravity allocation of counterweight is in the 1st region.From the axle of camshaft
Line direction is observed, and the straight line by the pivot of camshaft and the pivot of counterweight is set into the longitudinal axis.Will be orthogonal with the longitudinal axis
And the straight line for the pivot for passing through camshaft is set to transverse axis.By the pivot court in the direction parallel with the longitudinal axis from camshaft
The 1st longitudinal direction is set to the direction of the pivot of counterweight.A side in the direction parallel with transverse axis is set to the 1st laterally.1st area
Domain is located at the 1st longitudinal direction relative to transverse axis and is located at the 1st laterally relative to the longitudinal axis.Counterweight is included from the axis direction of camshaft
It is configured at the part 1 in the 1st region.From the radial direction of camshaft, at least a portion of part 1 is overlapping with flange.
In this case, the center of gravity of counterweight can be made away from the pivot of camshaft.Therefore, in the rotation speed of camshaft
Spend in the case of identical, the centrifugal force of counterweight becomes big.Thereby, it is possible to increase spring force, it is therefore not necessary to make setting speed rise just
Counterweight can be suppressed to open due to gravity.
Preferably, the mechanism of decompressor also includes back-moving spring, and the back-moving spring is so that counterweight is returned from open state to closed state
The mode returned is exerted a force.Counterweight or flange include retracing the retracting portion of back-moving spring.In this case, with retracting portion is set
Situation outside counterweight or flange is compared, and the camshaft for including the mechanism of decompressor can be made compactly to be formed.
Preferably, retracting portion has the shape of the axis direction depression from the surface of counterweight or flange to camshaft.
In this case, the camshaft for including the mechanism of decompressor can be made compactly to be formed in the axial direction.
Preferably, flange includes the engaging portion locking with the end of back-moving spring.Engaging portion is integrally formed with flange.
In this case, compared with situation about will be processed for the shape of the end of locking back-moving spring on flange, negative booster can be made
Structure it is easy to manufacture.
Preferably, from the axis direction of camshaft, the profile of flange is bigger than the profile of bearing.In this case,
Because flange is larger, therefore, it is possible to the free degree for the configuration for improving trunnion.
Preferably, camshaft includes the exhaust cam contacted with valve mechanism.Exhaust cam is included than basic circle outward
Prominent nose of cam.From the axis direction of camshaft, at least a portion of trunnion is not overlapping with nose of cam.In the feelings
It is not overlapping with nose of cam therefore, it is possible to which trunnion is configured at because trunnion is installed on the flange with exhaust cam split under condition
Position.
The vehicle of others mode of the invention possesses above-mentioned engine.
Invention effect
According to the present invention, in the engine of the position between the mechanism of decompressor is configured at the both ends of camshaft, Neng Gouti
The free degree of the configuration of high trunnion, and the densification of engine can be sought.
Brief description of the drawings
Fig. 1 is the side view of vehicle.
Fig. 2 is the partial sectional view of engine.
Fig. 3 is the sectional view of the cylinder cover of the plane vertical with camshaft.
Fig. 4 is the amplification view of assembling cam shaft body.
Fig. 5 is the stereogram of assembling cam shaft body.
Fig. 6 is the exploded view of assembling cam shaft body.
Fig. 7 is the figure for showing the counterweight under closed state.
Fig. 8 is the figure for showing the counterweight under open state.
Fig. 9 is the enlarged drawing of exhaust cam.
Figure 10 is the side view of assembling cam shaft body.
Figure 11 is the figure of assembling cam shaft body for showing to observe from camshaft line direction.
Figure 12 is the figure of counterweight for showing to observe from camshaft line direction.
Figure 13 is the stereogram of counterweight.
Figure 14 is the side view for the assembling cam shaft body observed from Figure 10 arrow XIV direction.
Figure 15 is the figure of flange, counterweight and back-moving spring for showing to observe from camshaft line direction.
Figure 16 is the figure for the cylinder cover for showing the state that housing (head cover) has been removed.
Embodiment
Hereinafter, with reference to the accompanying drawings of the vehicle 1 of embodiment.Fig. 1 is the side view of vehicle 1.Vehicle 1 is motor scooter
(scooter) motorcycle of type.Vehicle 1 includes vehicle body 2, front-wheel 3, trailing wheel 4, handlebar 5 and seat 6.Vehicle body 2 is wrapped
Include flat pedal 2a.Vehicle body 2 supports front-wheel 3 and trailing wheel 4.Handlebar 5 and seat 6 are installed on vehicle body 2.Flat pedal 2a configurations
In the front and lower section of seat 6.
Vehicle 1 includes the engine 7 of embodiment.Fig. 2 is the partial sectional view of engine 7.As shown in Fig. 2 engine 7
Including bent axle 11, crankcase 12, cylinder block 13, cylinder cover 14 and housing 19.Cylinder block 13 is connected to crankcase 12.Cylinder block
13 can also be with crankcase 12 integrally, or can also be split.Cylinder block 13 is with piston 15.Piston 15 is via connecting rod 16
Link with bent axle 11.Bent axle 11 is connected to gearbox 8.
Cylinder cover 14 is connected to cylinder block 13.Cylinder cover 14 includes combustion chamber 17.Spark plug 18 is installed in cylinder cover 14.
The top ends of spark plug 18 face combustion chamber 17 and configured.Housing 19 is installed on cylinder cover 14.
Engine 7 includes valve mechanism 25 and camshaft 26.Valve mechanism 25 and camshaft 26 are placed in cylinder cover 14.It is convex
Wheel shaft 26 drives valve mechanism 25 by being contacted with valve mechanism 25.
Camshaft 26 is supported in cylinder cover 14.Cylinder cover 14 includes the 1st supporting walls 141 and the 2nd supporting walls 142.1st support
The supporting walls 142 of wall 141 and the 2nd are configured side by side on the axis direction (hereinafter referred to as " camshaft line direction ") of camshaft 26.
The supporting cam wheel axle 26 of 1st supporting walls 141.1st supporting walls 141 are via the supporting cam wheel axle 26 of the 1st bearing 27.2nd supporting walls 142
Support camshaft 26.2nd supporting walls 142 are via the supporting cam wheel axle 26 of the 2nd bearing 28.1st bearing 27 and the 2nd bearing 28 are by camshaft
26 are supported in cylinder cover 14 in the way of it can rotate.The external diameter of 1st bearing 27 is bigger than the external diameter of the 2nd bearing 28.In addition, the 1st
Supporting walls 141 can also support camshaft 26 not via the ground of the 1st bearing 27.2nd supporting walls 142 can also be not via the 2nd bearing
28 ground support camshaft 26.
Camshaft 26 includes the 1st camshaft mandrel end 261 and the 2nd camshaft mandrel end 262.On camshaft line direction, the 1st axle
Hold 27 positions for being configured at the vicinity that the 1st camshaft mandrel end 261 is more leaned on compared with the 2nd camshaft mandrel end 262.In camshaft line side
Upwards, the 2nd bearing 28 is configured at the position for the vicinity that the 2nd camshaft mandrel end 262 is more leaned on compared with the 1st camshaft mandrel end 261.
Cam chain 29 is wound with camshaft 26 and bent axle 11.Specifically, the 1st sprocket wheel 31 is installed in camshaft 26.
1st sprocket wheel 31 is installed on the 1st camshaft mandrel end 261.The 2nd sprocket wheel 32 is installed in bent axle 11.Cam chain 29 is wound in the 1st sprocket wheel
31 and the 2nd sprocket wheel 32.
The rotation of bent axle 11 is transferred to camshaft 26 via cam chain 29, and thus camshaft 26 rotates.Camshaft 26 includes
Admission cam 263 and exhaust cam 264.Admission cam 263 and exhaust cam 264 are configured side by side on camshaft line direction.
Rotated by camshaft 26, admission cam 263 and exhaust cam 264 rotate.Admission cam 263 and exhaust cam 264 and valve
Mechanism 25 is contacted, and is rotated by admission cam 263 and exhaust cam 264, to drive valve mechanism 25.
Fig. 3 is the sectional view of the cylinder cover 14 of the plane vertical with camshaft 26.As shown in figure 3, engine 7 includes exhaust
Door 23 and inlet valve 24.Cylinder cover 14 includes the air inlet 21 and exhaust outlet 22 connected with combustion chamber 17.Exhaust valve 23 and air inlet
Door 24 is placed in cylinder cover 14.Air inlet 21 is opened and closed inlet valve 24.Exhaust outlet 22 is opened and closed exhaust valve 23.Valve
Inlet valve 24 and exhaust valve 23 are opened and closed for mechanism 25.
Inlet-valve spring 241 is installed in inlet valve 24.Inlet-valve spring 241 closes the side of air inlet 21 in inlet valve 24
Inlet valve 24 is exerted a force upwards.Exhaust valve spring 231 is installed in exhaust valve 23.Exhaust valve spring 231 is closed in exhaust valve 23
Exhaust valve 23 is exerted a force on the direction of exhaust outlet 22.
Valve mechanism 25 includes exhaust rocker arm axle 33 and exhaust rocker arm 34.Exhaust rocker arm axle 33 is abreast matched somebody with somebody with camshaft 26
Put.Exhaust rocker arm axle 33 is supported in cylinder cover 14.Exhaust rocker arm 34 centered on exhaust rocker arm axle 33 in the way of it can be swung
It is supported in exhaust rocker arm axle 33.Exhaust rocker arm 34 is configured to act exhaust valve 23.Exhaust rocker arm 34 includes arm main body
341st, exhaust roller 342 and exhaust valve press section 343.
Arm main body 341 is supported in exhaust rocker arm axle 33 in the way of it can swing.One end of arm main body 341 will be vented roller
342 supports are to rotate.The other end support exhaust valve press section 343 of arm main body 341.It is vented roller 342 and exhaust cam
264 contacts, are rotated by the rotation of exhaust cam 264.The top of exhaust valve press section 343 and the rod end 232 of exhaust valve 23
Relatively.
When boosting exhaust roller 342 by exhaust cam 264, exhaust rocker arm 34 is swung, thus, exhaust valve press section
343 press the rod end 232 of exhaust valve 23.Thus, exhaust valve 23 is pressed and opens exhaust outlet 22.Do not passing through exhaust cam
264 boost exhaust roller 342 when, exhaust valve 23 is boosted by exhaust valve spring 231 and exhaust outlet 22 is closed.
Valve mechanism 25 includes intake rocker axle 35 and intake rocker 36.Intake rocker axle 35 is abreast matched somebody with somebody with camshaft 26
Put.Intake rocker axle 35 is supported in cylinder cover 14.Intake rocker 36 centered on intake rocker axle 35 in the way of it can be swung
It is supported in intake rocker axle 35.Intake rocker 36 is configured to act inlet valve 24.Intake rocker 36 includes arm main body
361st, air inlet roller 362 and inlet valve press section 363.
Arm main body 361 is supported in intake rocker axle 35 in the way of it can swing.One end of arm main body 361 is by air inlet roller
362 supports are to rotate.The other end support inlet valve press section 363 of arm main body 361.Air inlet roller 362 and admission cam
263 contacts, are rotated by the rotation of admission cam 263.The top of inlet valve press section 363 and the rod end 242 of inlet valve 24
Relatively.
When boosting air inlet roller 362 by admission cam 263, intake rocker 36 is swung, thus, inlet valve press section
363 press the rod end of inlet valve 24.Thus, inlet valve 24 is pressed and opens air inlet 21.Do not pushed away using admission cam 263
When playing air inlet roller 362, inlet valve 24 is boosted by inlet-valve spring 241 and air inlet 21 is closed.
As shown in Fig. 2 engine 7 includes the mechanism of decompressor 40.Fig. 4 is camshaft 26, the bearing 27 of the mechanism of decompressor 40 and the 1st
The enlarged drawing of assembly (hereinafter referred to as " assembling cam shaft body ").On camshaft line direction, the mechanism of decompressor 40 is configured at the 1st
Between the camshaft mandrel end 262 of camshaft mandrel end 261 and the 2nd.The mechanism of decompressor 40 be configured at the 1st supporting walls 141 of cylinder cover 14 with
Between 2nd supporting walls 142.
Fig. 5 is the stereogram of assembling cam shaft body.Fig. 6 is the exploded view of assembling cam shaft body.As shown in figs.5 and 6,
The mechanism of decompressor 40 includes flange 41, counterweight 42, relief cam 43, decompression pin 44 and back-moving spring 45.
As shown in fig. 6, flange 41 and camshaft 26 are splits, camshaft 26 is fixed on.Specifically, flange 41 includes
Hole 411.Camshaft 26 is inserted in the hole 411 of flange 41, flange 41 is fixed on camshaft 26 by press-in.In camshaft line side
Upwards, flange 41 is configured between counterweight 42 and exhaust cam 264.
Flange 41 includes the 1st convex portion 412 and the 2nd convex portion 413.Trunnion (pivot pin) 46 is installed in the 1st convex portion 412.
2nd convex portion 413 is provided with hole 414.Relief cam 43 is inserted in the hole 414 of the 2nd convex portion 413.
On camshaft line direction, counterweight 42 is configured between the 1st bearing 27 and flange 41.Counterweight 42 is can close shape
The mode rotated between state and open state is supported in camshaft 26.
Fig. 7 and Fig. 8 are Fig. 4 A-A sectional views.Fig. 7 shows the counterweight 42 under closed state.Fig. 8 is shown under open state
Counterweight 42.
Relief cam 43 is supported in flange 41 in the way of it can rotate.Specifically, counterweight 42 via trunnion 46 with energy
The mode enough rotated is supported in flange 41.Counterweight 42 centered on trunnion 46 by being rotated, so as to switch to closed state or open shape
State.
Relief cam 43 is connected via decompression pin 44 with counterweight 42.Thus, relief cam 43 is corresponding to the rotation of counterweight 42
Ground rotates.
Specifically, as shown in Fig. 4 and Fig. 6, relief cam 43 includes head 431 and axle portion 432.Axle portion 432 is inserted
In the hole 414 of flange 41.Head 431 is configured between flange 41 and counterweight 42.Hole 414 of the external diameter on head 431 than flange 41
Internal diameter it is big.Head 431 includes groove portion 433.Groove portion 433 has the shape from the sunken end face on head 431.Groove portion 433 is from the beginning
The interior side extension of the outer peripheral face headward 431 in portion 431.The end of decompression pin 44 is configured in groove portion 433.In addition, in this reality
Apply in mode, interior side means interior side radially.In addition, foreign side means foreign side radially.
Axle portion 432 includes cam part 434.Exhaust cam 264 includes recess 265, and recess 265 has from exhaust cam 264
Periphery towards exhaust cam 264 interior side be recessed shape.Fig. 9 is the enlarged drawing of exhaust cam 264.Figure 10 is camshaft group
Fill the side view of body.
Cam part 434 is configured in the recess 265 of exhaust cam 264.The section of cam part 434 is cut out with a part
Circular shape.As described above, relief cam 43 and the rotation of counterweight 42 correspondingly rotate.Fig. 9 (A) shows counterweight 42
Relief cam 43 during in open state.Fig. 9 (B) shows the relief cam 43 when counterweight 42 is in closed state.Relief cam 43
Rotation with counterweight 42 correspondingly, switch to the state that is contacted with the exhaust roller 342 of valve mechanism 25 or not with exhaust roller
The state of 342 contacts.
Specifically, when counterweight 42 is open state, shown in such as Fig. 9 (A), the cam part 434 of relief cam 43 it is whole
Body is configured in recess 265.That is, when counterweight 42 is open state, cam part 434 turns into outer peripheral face not from exhaust cam 264
The state protruded outward.Thus, when counterweight 42 is in open state, relief cam 43 is not contacted with exhaust roller 342.
When counterweight 42 is in closed state, shown in such as Fig. 9 (B), a part for the cam part 434 of relief cam 43 is configured at
Outside recess 265.That is, when counterweight 42 is in closed state, a part for cam part 434 turns into the outer peripheral face from exhaust cam 264
The state protruded outward.Thus, when counterweight 42 is in closed state, relief cam 43 is contacted with exhaust roller 342.
Back-moving spring 45 is exerted a force in the way of counterweight 42 is returned from open state to closed state.In present embodiment
In, back-moving spring 45 is helical spring.But, back-moving spring 45 can also be other kinds of spring.As shown in fig. 6, resetting
Spring 45 includes the 1st spring end 451 and the 2nd spring end 452.1st spring end 451 extends along camshaft line direction.2nd
Spring end 452 extends along with the direction that camshaft line direction intersects.Circumference of 2nd spring end 452 along back-moving spring 45 is prolonged
Stretch.1st spring end 451 is engaging in flange 41.2nd spring end 452 is engaging in counterweight 42.
Then, the construction of counterweight 42 is described in detail.As shown in fig. 7, from camshaft line direction, camshaft 26 will be passed through
Pivot c1 and the pivot c2 straight line of counterweight 42 be set to longitudinal axis Y.Will be orthogonal with longitudinal axis Y and by camshaft 26
Pivot c1 straight line is set to transverse axis X.By in the direction parallel with longitudinal axis Y from the pivot c1 of camshaft 26 towards counterweight
42 pivot c2 direction is set to the 1st longitudinal direction y1.1st longitudinal direction y1 opposite direction is set to the 2nd longitudinal direction y2.Will be with transverse axis
A side in direction parallel X is set to the 1st transverse direction x1.The direction opposite with the 1st transverse direction x1 is set to the 2nd transverse direction x2.
In addition, the 1st longitudinal direction y1 will be located at relative to transverse axis X and the is set to positioned at the 1st transverse direction x1 region relative to longitudinal axis Y
1 region A1.The 2nd longitudinal direction y2 will be located at relative to transverse axis X and the 2nd region is set to relative to the longitudinal axis Y regions for being located at the 1st transverse direction x1
A2.From camshaft line direction, the 2nd longitudinal direction y2 will be located at relative to transverse axis X and be located at the 2nd transverse direction x2's relative to longitudinal axis Y
Region is set to the 3rd region A3.The 1st longitudinal direction y1 will be located at and relative to longitudinal axis Y positioned at the 2nd transverse direction x2 region relative to transverse axis X
It is set to the 4th region A4.
In addition, Fig. 7 shows the counterweight 42 observed on camshaft line direction from the side of the 1st camshaft mandrel end 261.Therefore,
On camshaft line direction from the side of the 1st camshaft mandrel end 261 in the case of define above-mentioned direction x1, x2, y1, y2 and
Region A1-A4, but can also on camshaft line direction from the side of the 2nd camshaft mandrel end 262 in the case of define it is above-mentioned
Direction x1, x2, y1, y2 and region A1-A4.
As shown in fig. 7, counterweight 42 has the shape along the circumferentially extending of camshaft 26.Counterweight 42 is in the 1st region A1, the 2nd
Region A2 and the 4th region A4 are configured at around camshaft 26.Counterweight 42 has in the circumference of camshaft 26 across the 1st
The shape in multiple regions in the~the 4 region A1-A4.From camshaft line direction, counterweight 42, which does not have, is configured at the 3rd region
A3 part.
Specifically, counterweight 42 includes the 1st counterweight part 47 and the 2nd counterweight part 48.Rotation of 1st counterweight part 47 from counterweight 42
Circumferences of the center c2 along camshaft 26 and extend to the 1st transverse direction x1.End 471 in the circumference of 1st counterweight part 47 is relative to vertical
Axle Y is located at the 1st transverse direction x1.That is, the 1st counterweight part 47 is overall to be located at the 1st transverse direction x1 relative to longitudinal axis Y.Seen from camshaft line direction
Examine, the end 471 of the 1st counterweight part 47 is configured at the 2nd region A2.
Circumference of 2nd counterweight part 48 from the pivot c2 of counterweight 42 along camshaft 26 and extend to the 2nd transverse direction x2.2nd
End 481 in the circumference of counterweight part 48 is located at the 2nd transverse direction x2 relative to longitudinal axis Y.That is, the 2nd counterweight part 48 is overall relative to vertical
Axle Y is located at the 2nd transverse direction x2.From camshaft line direction, the end 481 of the 2nd counterweight part 48 is configured at the 4th region A4.
In the circumference of camshaft 26, the counterweight part 48 of the 1st counterweight part 47 to the 2 is long.That is, around the pivot of camshaft 26
C1 counterweight 42 from pivot c2 to the end 471 of the 1st counterweight part 47 angle than counterweight 42 from pivot c2 to
The angle of the end 481 of 2nd counterweight part 48 is big.
1st counterweight part 47 includes part 1 421 and part 2 422.From camshaft line direction, part 1 421 is matched somebody with somebody
It is placed in the 1st region A1.From camshaft line direction, part 2 422 is configured at the 2nd region A2.2nd counterweight part 48 is configured at
4th region A4.
Counterweight 42 includes kingpin support 423.Kingpin support 423 is matched somebody with somebody throughout part 1 421 and the ground of part 2 422
Put.Trunnion 46 is installed on kingpin support 423.
Exhaust cam 264 includes the nose of cam 267 (cam lobe) protruded outward than basic circle 266.From camshaft line
Direction is observed, and a part for trunnion 46 is not overlapping with nose of cam 267.That is, from camshaft line direction, one of trunnion 46
Divide the position for being located at the outer side of outer peripheral face than exhaust cam 264.In addition, from camshaft line direction, trunnion 46 includes position
Part in the position than the inner side of basic circle 266.
Decompression pin 44 is connected to the 1st counterweight part 47.Specifically, decompression pin 44 is connected to part 2 422.From camshaft
Line direction is observed, and decompression pin 44 is configured at the 2nd region A2.From camshaft line direction, the pivot c2 of counterweight 42 is with subtracting
The distance between pad 44 is more than the distance between pivot c2 and the pivot c1 of camshaft 26 of counterweight 42.
Figure 11 is the figure of assembling cam shaft body for showing to observe from camshaft line direction.As shown in figure 11, from camshaft
Line direction is observed, and the profile of flange 41 includes the part bigger than the profile of the 1st bearing 27.Specifically, the 1st convex portion 412 to the 1
The outer peripheral face of bearing 27 is protruded outward.
Under closed state, the part 1 421 of counterweight 42 includes the 1st protuberance 424.From camshaft line direction, the 1st
The outer peripheral face of the bearing 27 of protuberance 424 to the 1 is protruded outward.From camshaft line direction, the outer peripheral face of part 2 422
Positioned at the position of the inner side of outer peripheral face than the 1st bearing 27.From camshaft line direction, the outer peripheral face position of the 2nd counterweight part 48
In the position of the inner side of outer peripheral face than the 1st bearing 27.
From camshaft line direction, kingpin support 423 includes more prominent than what the outer peripheral face of the 1st bearing 27 was protruded outward
Go out portion 425.The maximum of the prominent length of protuberance 425 is bigger than the maximum of the prominent length of the 1st protuberance 424.That is, it is prominent
The protuberance 424 of portion 425 to the 1 is to a greater degree along the radially projecting of the 1st bearing 27.In addition, prominent length is meant that the 1st
The prominent length from the outer peripheral face of the 1st bearing 27 radially of bearing 27.
As shown in figure 11, the 1st bearing 27 includes inner ring 271 and outer ring 272.Inner ring 271 is contacted with camshaft 26.Outer ring
272 contact with the 1st supporting walls 141 of cylinder cover 14.As shown in fig. 7, counterweight 42 includes inner ring contact site 426.Inner ring contact site
426 configure side by side on camshaft line direction with inner ring 271.Inner ring contact site 426 is adjacent with the 1st bearing 27 from counterweight 42
Surface protruded towards inner ring 271.
As shown in figure 11, inner ring contact site 426 is located at the position of the inner side of inner peripheral surface than outer ring 272.No matter in addition, matching somebody with somebody
Weigh 42 and be in which of closed state and open state state, inner ring contact site 426 is respectively positioned on more inner than the inner peripheral surface of outer ring 272
The position of side.From camshaft line direction, at least a portion of inner ring contact site 426 is configured in the rotation with camshaft 26
Positions of the heart c1 compared to the vicinity for the pivot c2 for more leaning on counterweight 42.From camshaft line direction, inner ring contact site 426
Between the pivot c2 and camshaft 26 of counterweight 42.As shown in figure 4, the shape contacted in inner ring contact site 426 with inner ring 271
Under state, the other parts of counterweight 42 are not contacted with outer ring 272.
Specifically, counterweight 42 be in closed state under, inner ring contact site 426 throughout the 4th region A4, the 1st region A1 with
And the 2nd region A2 configure.Inner ring contact site 426 includes the 1st contact site 426a, the 2nd contact site 426b and the 3rd contact site
426c.It is in counterweight 42 under closed state, the 1st contact site 426a is configured at the 1st region A1.It is in counterweight 42 under closed state,
2nd contact site 426b is configured at the 2nd region A2.It is in counterweight 42 under closed state, the 3rd contact site 426c is configured at the 4th region
A4.From camshaft line direction, the 1st contact site 426a area is bigger than the 2nd contact site 426b area.From camshaft line side
To observation, the 1st contact site 426a area is bigger than the 3rd contact site 426c area.
In fig. 12, G1 represents the position of the center of gravity of counterweight 42.G2 is represented in the case of in the absence of the 1st protuberance 424
Counterweight 42 center of gravity position.In addition, in fig. 12, the 1st protuberance 424 has hatching." the 1st protuberance 424 is not present
Situation " the state that has been removed of part being meant that in fig. 12 with hatching.In addition, in fig. 12, using two point
Rule to represent the outer peripheral face of the 1st bearing 27.As shown in figure 12, from camshaft line direction, the center of gravity G1 configurations of counterweight 42
In the 1st region A1.The distance between center of gravity G1 of counterweight 42 and pivot c1 of camshaft 26 than counterweight 42 center of gravity G1 with
The distance between pivot c2 of counterweight 42 is big.From camshaft line direction, the 1st protuberance 424 is included in the 1st bearing 27
Circumference on compare without 1 protuberance 424 when counterweight 42 center of gravity G2 the pivot c2 for being located proximate to counterweight 42 near-end
Divide 424a and the pivot c2 away from counterweight 42 distal part 424b.On the dashing forward outward of the outer peripheral face from the 1st bearing 27
Output, near-end point 424a is bigger than distal part 424b.
In addition, from camshaft line direction, in inner ring contact site 426 than counterweight 42 center of gravity G1 close to counterweight 42 rotation
Turn center c2 part, than in inner ring contact site 426 than counterweight 42 pivot c2s of the center of gravity G1 away from counterweight 42 part
Greatly.For example, the 1st contact site 426a camshaft 26 Breadth Maximum radially than the 2nd contact site 426b in camshaft 26
Breadth Maximum radially is big.
Figure 13 is the stereogram on the surface for the side of the 2nd camshaft mandrel end 262 for showing counterweight 42.Figure 14 is in Fig. 10 from arrow
The side view for the assembling cam shaft body that head XIV direction is observed.As shown in figure 13, part 1 421 is on camshaft line direction
Maximum gauge of the maximum gauge than part 2 422 on camshaft line direction it is big.2nd counterweight part 48 is in camshaft line direction
On maximum gauge of the maximum gauge than part 2 422 on camshaft line direction it is big.
As shown in figure 13, part 1 421 includes inside diameter 421a and outer diameter part 421b.Inside diameter 421a is located at outer diameter part
421b interior side.Thickness ratio inside diameter 421a thickness on camshaft line direction of the outer diameter part 421b on camshaft line direction
Greatly.Outer diameter part 421b includes above-mentioned 1st protuberance 424.Therefore, maximum gauge of the 1st protuberance 424 on camshaft line direction
It is bigger than maximum gauge of the part 2 422 on camshaft line direction.Maximum of 1st protuberance 424 on camshaft line direction is thick
Maximum gauge of the counterweight parts 48 of Du Bi 2 on camshaft line direction is big.Thickness of 1st protuberance 424 on camshaft line direction
The thickness spent than kingpin support 423 on camshaft line direction is big.
As shown in Figure 10, from the radial direction of camshaft 26, a part for counterweight 42 is overlapping with flange 41.Specifically,
From the radial direction of camshaft 26, the outer diameter part 421b of part 1 421 is overlapping with flange 41.2nd cam of the 2nd counterweight part 48
The surface of the surface of the side of shaft end 262 and the inside diameter 421a side of the 2nd camshaft mandrel end 262 and the 1st cam shaft end of flange 41
The surface of the side of portion 261 is relative, and the head 431 of above-mentioned relief cam 43 is configured between part 2 422 and flange 41.
As shown in figure 13, kingpin support 423 includes retracting portion 423a and boss portion 423b.Boss portion 423b is from retracting portion
423a is protruded along camshaft line direction.Thickness ratio part 1s 421 and 2nd of the retracting portion 423a on camshaft line direction is matched somebody with somebody
Thickness of the weight portion 48 on camshaft line direction is small.Therefore, retracting portion 423a has from the surface of counterweight 42 along camshaft line side
To the shape of depression.
Figure 15 is the figure of flange 41, counterweight 42 and back-moving spring 45 from the side of the 2nd camshaft mandrel end 262.Such as Figure 15
Shown, retracting portion 423a retracts back-moving spring 45.Boss portion 423b is inserted in above-mentioned back-moving spring 45.Set in boss portion 423b
There is hole 423c.Trunnion 46 is inserted in boss portion 423b hole 423c.
As shown in Figure 13 and Figure 15, counterweight 42 includes the 2nd engaging portion 42b.2nd engaging portion 42b is used for and back-moving spring
45 the 2nd spring end 452 is locking.2nd engaging portion 42b is contained in part 1 421.Specifically, the 2nd engaging portion 42b be
Relative to the stage portion of the formation of kingpin support 423 in part 1 421.
As shown in Figure 14 and Figure 15, flange 41 includes the 1st engaging portion 42a.1st engaging portion 42a is used for and back-moving spring
45 the 1st spring end 451 is locking.Specifically, the 1st engaging portion 42a is a part for the 1st convex portion 412.1st engaging portion 42a
It is integrally formed with flange 41.For example, flange 41 is including the 1st engaging portion 42a, made by sintering, forging or casting etc.
Method is integrally formed.
Figure 16 is the figure for the cylinder cover 14 for showing the state that housing 19 has been removed.As shown in figure 16, cylinder cover 14 includes
1st bearings hole 143.1st bearings hole 143 supports the 1st bearing 27.1st bearings hole 143 is arranged at the 1st support
Wall 141.1st bearings hole 143 includes the 1st recess 144, the recess 146 of second recesses 145 and the 3rd.1st recess the 144, the 2nd
The recess 146 of recess 145 and the 3rd is centrally located at the opposite side of bent axle 11 relative to the 1st bearings hole 143.1st recess
144 have the shape that the 1st protuberance 424 and admission cam 263 can pass through.Second recesses 145 have the energy of exhaust cam 264
The shape enough passed through.3rd recess 146 has the shape that kingpin support 423 can pass through.In addition it is also possible to be, the 1st recess
144 part is centrally located at the opposite side of bent axle 11 relative to the 1st bearings hole 143, and other parts are relative to the 1st axle
Hold the phase homonymy that supported hole 143 is centrally located at bent axle 11.Or or, a part for second recesses 145 is relative to the 1st
Bearings hole 143 is centrally located at the opposite side of bent axle 11, centre bit of the other parts relative to the 1st bearings hole 143
In the phase homonymy of bent axle 11.
In the engine 7 of present embodiment, flange 41 is pressed into camshaft 26, therefore, it is possible to free in press-in
Set position of the flange 41 relative to camshaft 26 in the circumferential.In addition, flange 41 and camshaft 26 are splits, therefore, i.e.,
Flange 41 is become big, can also suppress camshaft 26, valve mechanism 25 and their actuating range and become big.Therefore, it can make
The densification of engine 7, can improve the free degree of the configuration of trunnion 46 again.
Relief cam 43 is supported in flange 41.Therefore, because both counterweight 42 and relief cam 43 are supported in flange 41,
Therefore, the position only by changing flange 41 relative to camshaft 26, it becomes possible to do not change counterweight 42 and the phase of relief cam 43
The position of counterweight 42 and relief cam 43 relative to camshaft 26 is changed to position.
From the radial direction of camshaft 26, a part for counterweight 42 is overlapping with flange 41.Therefore, it is possible to make to include negative booster
The camshaft 26 of structure 40 is formed compactly on camshaft line direction.
From camshaft line direction, the center of gravity G1 of counterweight 42 is configured at the 1st region A1.Counterweight 42 is included from camshaft line
Observe the part 1 421 for being configured at the 1st region A1 in direction.From the radial direction of camshaft 26, a part for part 1 421 with
Flange 41 is overlapping.
Therefore, it is possible to make the center of gravity G1 of counterweight 42 away from the pivot c1 of camshaft 26.Therefore, in the rotation of camshaft 26
In the case of rotary speed identical, the centrifugal force for putting on counterweight 42 becomes big.Thereby, it is possible to increase the spring force of back-moving spring 45,
Opened it is therefore not necessary to make setting speed rising just to suppress counterweight 42 due to gravity.
Counterweight 42 includes retracing the retracting portion 423a of back-moving spring 45.Therefore, with retracting portion 423a is arranged at into counterweight 42
Outside situation compare, the camshaft 26 for including the mechanism of decompressor 40 can be made compactly to be formed.
Retracting portion 423a has the shape being recessed from the surface of counterweight 42 along camshaft line direction.Therefore, it is possible to make to include
The camshaft 26 of the mechanism of decompressor 40 is formed compactly on camshaft line direction.
Flange 41 includes the 1st engaging portion 42a locking with the 1st spring end 451 of back-moving spring 45.1st engaging portion 42a
It is integrally formed with flange 41.Therefore, with will be processed for the 1st engaging portion 42a of locking back-moving spring 45 shape in flange 41
On situation compare, the easy to manufacture of the mechanism of decompressor 40 can be made.
From camshaft line direction, the profile of flange 41 has the part bigger than the profile of the 1st bearing 27.That is, flange
The outer peripheral face of 41 bearing 27 of the 1st convex portion 412 to the 1 is protruded outward.Therefore, it is possible to the freedom for the configuration for improving trunnion 46
Degree.
Trunnion 46 is installed in the flange 41 with the split of exhaust cam 264.Therefore, it is possible to by trunnion 46 be configured at not with it is convex
Take turns the overlapping position in convex portion 267.
One embodiment of the present invention is this concludes the description of, but the present invention is not limited to above-mentioned embodiment, can not take off
From carrying out various changes in the range of the purport of invention.
The shape of counterweight 42 is not limited to the shape of above-mentioned embodiment, can also be changed.The circumferential lengths of counterweight
Can be shorter than the counterweight 42 of above-mentioned embodiment.For example, the circumferential end 471 of the 1st counterweight part 47 can also be configured at the 1st region
A1.Or, the circumferential lengths of counterweight can also be longer than the counterweight 42 of above-mentioned embodiment.For example, the circumferential end of the 1st counterweight part 47
Portion 471 can also be configured at the 3rd region A3.
The 1st protuberance 424 of counterweight 42 can also be omitted.That is, from camshaft line direction, part 1 421 can also
Positioned at the position of the inner side of outer peripheral face than the 1st bearing 27.
The center of gravity G1 of counterweight 42 is not limited to the 1st region A1, can also be configured at other regions.For example, the weight of counterweight 42
Heart G1 can also be configured at the 2nd region A2.
The position of trunnion 46 is not limited to the position of above-mentioned embodiment, and can also be changed.For example, it is also possible to be pivot
Position of the configured in one piece of pin 46 as not overlapping with nose of cam 267.I.e. or, the configured in one piece of trunnion 46
In the foreign side of the outer peripheral face of nose of cam 267.
The shape of inner ring contact site is not limited to the shape of above-mentioned embodiment, and can also be changed.Or, can also
Omit inner ring contact site.
Flange, rather than counterweight can also be located at by retracing the retracting portion of back-moving spring.In this case, retracting portion preferably has
The shape being recessed from the surface of flange along the axis direction of camshaft.
In the above-described embodiment, small-sized motorcycle is illustrated as the example of vehicle, but the vehicle of the present invention is not limited
In motor scooter, and it can also be the other kinds of motorcycle such as sports type, cross-country type, light motorcycle.Here, motorcycle
Two-wheeled is not limited to, also the vehicle including three-wheel.In addition, the vehicle of the present invention is preferably motorcycle, non-level land traveling vehicle
The riding vehicle such as (ALL-TERRAIN VEHICLE) or snow mobile is but it is also possible to be the vehicle beyond riding vehicle.
Term used herein and expression are to be used to illustrate, being not intended to limit property is explained.It must be recognized that, however not excluded that
Any equipollent for the feature item for being shown in which and describing, it is each in the range of also permission claims of the present invention is recorded
Plant deformation.The present invention can instantiated in a number of different manners.The disclosure should be considered that the implementation for providing the principle of the present invention
The content of mode.Limit the invention to record and/or illustrate herein preferred is not intended to having understood these embodiments
Embodiment on the basis of, embodiment is described herein.It is not limited to the embodiment recorded herein.The present invention is also wrapped
Containing including key element can be recognized by one skilled in the art based on the disclosure, impartial, amendment, deletion, combination, improvement
And/or all embodiments of change.The restriction item of claims should be based on used in claims
Term is construed broadly as, and should not be limited to described embodiment in the checking process of this specification or the application.
Claims (10)
1. a kind of engine, including：
Cylinder cover；
Exhaust valve, it is placed in the cylinder cover；
Valve mechanism, exhaust valve is opened and closed for it；
Camshaft, it drives the valve mechanism by being contacted with the valve mechanism；
Bearing, the camshaft is supported in the cylinder cover by it in the way of it can rotate；And
The mechanism of decompressor, it is configured between the both ends on the axis direction of the camshaft,
The mechanism of decompressor includes：
Flange, it is split with the camshaft, is pressed into the camshaft；
Trunnion, it is installed on the flange；
Counterweight, it is supported in the flange via the trunnion in the way of it can be rotated between closed state and open state；With
And
Relief cam, its rotation with the counterweight correspondingly, switch to the state that is contacted with the valve mechanism or not with institute
The state of valve mechanism contact is stated,
From the radial direction of the camshaft, a part for the counterweight is overlapping with the flange.
2. engine according to claim 1,
The relief cam is supported in the flange.
3. engine according to claim 1,
From the axis direction of the camshaft, the pivot of the pivot of the camshaft and the counterweight will be passed through
Straight line be set to the longitudinal axis, the straight line of pivot orthogonal with the longitudinal axis and by the camshaft is set to transverse axis, will be with
The direction of pivot towards the pivot of the counterweight in the parallel direction of the longitudinal axis from the camshaft is set to the 1st
Longitudinal direction, the 1st is set to laterally by the side in the direction parallel with the transverse axis,
From the axis direction of the camshaft, the gravity allocation of the counterweight relative to the transverse axis in being located at the described 1st
Longitudinal direction and the 1st region for being located at the described 1st transverse direction relative to the longitudinal axis,
From the axis direction of the camshaft, the counterweight includes the part 1 for being configured at the 1st region,
From the radial direction of the camshaft, at least a portion of the part 1 is overlapping with the flange.
4. engine according to claim 2,
From the axis direction of the camshaft, the pivot of the pivot of the camshaft and the counterweight will be passed through
Straight line be set to the longitudinal axis, the straight line of pivot orthogonal with the longitudinal axis and by the camshaft is set to transverse axis, will be with
The direction of pivot towards the pivot of the counterweight in the parallel direction of the longitudinal axis from the camshaft is set to the 1st
Longitudinal direction, the 1st is set to laterally by the side in the direction parallel with the transverse axis,
From the axis direction of the camshaft, the gravity allocation of the counterweight relative to the transverse axis in being located at the described 1st
Longitudinal direction and the 1st region for being located at the described 1st transverse direction relative to the longitudinal axis,
From the axis direction of the camshaft, the counterweight includes the part 1 for being configured at the 1st region,
From the radial direction of the camshaft, at least a portion of the part 1 is overlapping with the flange.
5. according to engine according to any one of claims 1 to 4,
The mechanism of decompressor also includes back-moving spring, and the back-moving spring is so that the counterweight closes shape from the open state to described
The mode that state is returned is exerted a force,
The counterweight or the flange include retracing the retracting portion of the back-moving spring.
6. engine according to claim 5,
The retracting portion has the shape being recessed from the surface of the counterweight or the flange along the axis direction of the camshaft.
7. engine according to claim 5,
The flange includes the engaging portion locking with the end of the back-moving spring,
The engaging portion is integrally formed with the flange.
8. according to engine according to any one of claims 1 to 4,
From the axis direction of the camshaft, the profile of the flange is bigger than the profile of the bearing.
9. according to engine according to any one of claims 1 to 4,
The camshaft includes the exhaust cam contacted with the valve mechanism,
The exhaust cam includes the nose of cam protruded outward than basic circle,
From the axis direction of the camshaft, at least a portion of the trunnion is not overlapping with the nose of cam.
10. a kind of vehicle, possesses engine according to any one of claims 1 to 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014108986A JP2015224578A (en) | 2014-05-27 | 2014-05-27 | Engine and vehicle |
| JP2014-108986 | 2014-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105317500A CN105317500A (en) | 2016-02-10 |
| CN105317500B true CN105317500B (en) | 2017-11-03 |
Family
ID=52997235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510276226.9A Active CN105317500B (en) | 2014-05-27 | 2015-05-26 | Engine and vehicle |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2949888B1 (en) |
| JP (1) | JP2015224578A (en) |
| CN (1) | CN105317500B (en) |
| TW (1) | TWI605188B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI655360B (en) * | 2017-06-29 | 2019-04-01 | 三陽工業股份有限公司 | Engine with decompression device |
| CN108442989B (en) * | 2018-03-15 | 2019-07-12 | 罗守磊 | A kind of engine exploitation adjustable convex wheel shaft |
| CN112384683B (en) * | 2018-07-05 | 2022-08-02 | 本田技研工业株式会社 | Decompression device of engine and engine |
| TWM580123U (en) * | 2018-11-30 | 2019-07-01 | 光陽工業股份有限公司 | Decompression device of internal combustion engine |
| TWI675147B (en) * | 2019-04-23 | 2019-10-21 | 宏佳騰動力科技股份有限公司 | Pressure reducing device |
| WO2023161950A1 (en) * | 2022-02-28 | 2023-08-31 | Tvs Motor Company Limited | Camshaft assembly for an internal combustion engine and the internal combustion engine thereof |
| TWI816429B (en) * | 2022-06-09 | 2023-09-21 | 光陽工業股份有限公司 | Pressure reducing device for internal combustion engines |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3362390A (en) * | 1966-02-09 | 1968-01-09 | Wisconsin Motor Corp | Automatic compression release |
| EP1380729A1 (en) * | 2002-07-08 | 2004-01-14 | Tecumseh Products Company | Compression release mechanism for internal combustion engine |
| CN101122247A (en) * | 2006-08-08 | 2008-02-13 | 本田技研工业株式会社 | Engine with decompression device |
| CN101713311A (en) * | 2008-09-30 | 2010-05-26 | 本田技研工业株式会社 | A variable valve device of an engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3705726B2 (en) * | 1999-12-15 | 2005-10-12 | 川崎重工業株式会社 | Automatic decompression device |
| JP4234653B2 (en) * | 2004-09-03 | 2009-03-04 | ヤマハ発動機株式会社 | Engine decompression device |
| JP2006291778A (en) * | 2005-04-07 | 2006-10-26 | Yamaha Motor Co Ltd | Decompression device and vehicle |
| JP4540655B2 (en) | 2006-11-24 | 2010-09-08 | 本田技研工業株式会社 | Internal combustion engine with decompression device |
-
2014
- 2014-05-27 JP JP2014108986A patent/JP2015224578A/en active Pending
-
2015
- 2015-04-15 EP EP15163608.1A patent/EP2949888B1/en active Active
- 2015-05-20 TW TW104116118A patent/TWI605188B/en active
- 2015-05-26 CN CN201510276226.9A patent/CN105317500B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3362390A (en) * | 1966-02-09 | 1968-01-09 | Wisconsin Motor Corp | Automatic compression release |
| EP1380729A1 (en) * | 2002-07-08 | 2004-01-14 | Tecumseh Products Company | Compression release mechanism for internal combustion engine |
| CN101122247A (en) * | 2006-08-08 | 2008-02-13 | 本田技研工业株式会社 | Engine with decompression device |
| CN101713311A (en) * | 2008-09-30 | 2010-05-26 | 本田技研工业株式会社 | A variable valve device of an engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105317500A (en) | 2016-02-10 |
| EP2949888A2 (en) | 2015-12-02 |
| TWI605188B (en) | 2017-11-11 |
| EP2949888B1 (en) | 2017-03-01 |
| EP2949888A3 (en) | 2016-01-27 |
| TW201604384A (en) | 2016-02-01 |
| JP2015224578A (en) | 2015-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105317500B (en) | Engine and vehicle | |
| CN105134325B (en) | Engine and vehicle | |
| CN104395563B (en) | Air valve bridge | |
| CN105275530B (en) | Engine and vehicle | |
| CN104364494A (en) | Exhaust-gas turbocharger | |
| CN105275529B (en) | Engine and vehicle | |
| CN105464737A (en) | Internal combustion engine variable valve device | |
| CN105090231B (en) | Internal combustion engine and the riding vehicle for possessing the internal combustion engine | |
| JP6190453B2 (en) | Sealing assembly for rotary piston internal combustion engine | |
| CN102330615B (en) | Cylinder cap device of internal combustion engine | |
| CN208885358U (en) | A kind of petrol engine | |
| JP2010053748A (en) | Cam housing structure of engine for motorcycle | |
| JP2017172405A (en) | Internal combustion engine | |
| JP2003247454A (en) | Cylinder block structure and its manufacturing method for internal-combustion engine | |
| CN108894848A (en) | A kind of petrol engine | |
| JP4008303B2 (en) | Decompression brake | |
| CN206769971U (en) | The combination unit of protruding axis for gasoline machine and the mechanism of decompressor | |
| CN107109976A (en) | Camshaft with decompressor | |
| JP6449943B1 (en) | Valve spring retainer and internal combustion engine | |
| CN101994595B (en) | A steam cylinder head structure of an internal combustion engine in a vehicle | |
| JPH0367007A (en) | Hydraulically operated tappet | |
| CN104963770B (en) | Four cylinders enclose the IC engine airframe of an axle | |
| CN201209487Y (en) | Dynamic seal apparatus for internal combustion engine | |
| JP2004116465A (en) | Camshaft structure for internal combustion engine | |
| CN101328818A (en) | Camshaft with VVT oil hole of engine valve mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |