CN102465730B

CN102465730B - Configuration structure of variable valve lift mechanism and oil controlled valve of engine

Info

Publication number: CN102465730B
Application number: CN201010543637.7A
Authority: CN
Inventors: 丁荣丰
Original assignee: Kwang Yang Motor Co Ltd
Current assignee: Kwang Yang Motor Co Ltd
Priority date: 2010-11-08
Filing date: 2010-11-08
Publication date: 2014-06-11
Anticipated expiration: 2030-11-08
Also published as: CN102465730A

Abstract

The invention discloses a configuration structure of a variable valve lift mechanism and an oil controlled valve of an engine. The engine is provided with a cylinder head, one side of the cylinder head is provided with a gas inlet and a gas inlet valve, the other side of the cylinder head is provided with an exhaust hole and an exhaust valve, a throttling valve body penetrates through a gas inlet pipe to be communicated with the gas inlet, a cam shaft seat is arranged between the gas inlet valve and the exhaust valve and provided with a cam shaft, the cam shaft is provided with a gas inlet cam and an exhaust cam which can push a gas inlet valve push member and an exhaust valve push member, the gas inlet cam is provided with a first gas inlet cam and a second gas inlet cam, the gas inlet valve push member is provided with a low-lift push member and a high-lift push member corresponding to the first gas inlet cam and the second gas inlet cam respectively, the low-lift push member and the high-lift push member are provided with oil hydraulic cylinders which are communicated, pistons are arranged in the oil hydraulic cylinders; and the oil controlled valve is provided with a drive oil path communicated with the oil hydraulic cylinders, a lower-lift push member of the high-lift push member is closer to the oil controlled valve, and a path of a drive oil path of the oil controlled valve and the high-lift push member is shorter than that of a drive oil path of driving the low-lift push member by the oil controlled valve.

Description

The arrangement of engine changeable air valve lift mechanism and oil controlling valve

[technical field]

The invention relates to the arrangement of a kind of engine changeable air valve lift mechanism and oil controlling valve, espespecially can avoid oil controlling valve to other components maintenance produce disturb, and do high low lift action by the valve driving member of engine, and then can make oil pump miniaturization, and reduce the structure of the loss of engine power.

[background technique]

The changeable air valve lift mechanism oil circuit arrangement of known engine 1, refer to shown in Fig. 1, it is the top that a solenoid valve 2 is arranged to cylinder head 11, and the lubricant oil of this oil pressure entrance is to be that its outside oil pressure is directly imported in solenoid valve 2 by pipeline 21, by solenoid valve 2, lubricant oil is imported to the oil circuit in cylinder head 11 again, promote the variable lift mechanism of each cylinder with oil pressure, during with high low-speed running in response to engine 1, the inlet and outlet valve of different lifts switches.

Known engine 1 is by the setting of this solenoid valve 2 and oil pipe 21, although different lifts enters can reach cooperation engine 1 high low-speed running time, drain tap switches, but, because solenoid valve 2 is to pay on cylinder head 11 with several screw 22 locks, therefore comparatively complicated in the time of assembling, and the external oil pipe 21 of this solenoid valve 2, because the anxiety that has draining is considered, and it is to expose to outside engine 1, therefore easily because engine 1 high temperature produces embrittlement and damage, in addition, because this solenoid valve 2 is to be arranged at cylinder head 11 tops, therefore easily cause this engine 1 in the time swinging, this solenoid valve 2 component easy and top is interfered as storage box etc. produces.

Because known variable lift mechanism oil circuit arrangement has above-mentioned disappearance, so, how a kind of assembling of engine and oil controlling valve of convenient configuration lubricating oil path simplified will be provided, and can make oil pump miniaturization and the structure of loss that reduces engine power, the real problem urgently overcoming for current motorcycle manufacturer.

[summary of the invention]

Technical way of the present invention, be at the arrangement that a kind of engine changeable air valve lift mechanism and oil controlling valve are provided, this engine has the cylinder body of being located on crankcase, one is located at the cylinder head in cylinder body, the first side of this cylinder is provided with air inlet port and suction valve, opposite side is provided with exhaust port and outlet valve, one throttle valve body sees through suction tude and is connected with air inlet port, between this suction valve and outlet valve, be provided with a camshaft holder, this camshaft holder is provided with a camshaft, this camshaft has intake cam and exhaust cam, this intake cam and exhaust cam, can promote intake valve driving member and exhaust valve driving member, wherein, this intake cam has the first intake cam and the second intake cam, this intake valve driving member is provided with the low lift driving member corresponding with the first intake cam and the high-lift driving member corresponding with the second intake cam, this low lift driving member is provided with high-lift driving member the oil hydraulic cylinder being connected, in this oil hydraulic cylinder, be provided with the piston that can be promoted by oil pressure, this oil controlling valve is provided with the driving oil circuit that is communicated with oil hydraulic cylinder, it is mainly: the high-lift driving member of this intake valve driving member is more to approach oil controlling valve compared with low lift driving member, and the path of the driving oil circuit of this oil controlling valve and high-lift driving member, short compared with the path of the driving oil circuit of oil controlling valve driving low lift driving member.

An of the present invention technological means, be at the arrangement that a kind of engine changeable air valve lift mechanism and oil controlling valve are provided, this oil controlling valve seat is the one side of the one-body molded air inlet port side that is arranged at cylinder head, and form slightly orthogonal shape with air inlet port, and be positioned at the outer wall place of timing chain chamber, and this oil controlling valve seat is set the maximum height lower than throttle valve body, separately, this oil controlling valve seat and timing chain tensioner are to be slightly a straight line, and be positioned at the same side of timing chain, and become slightly parallel with suction tude, this oil controlling valve seat has a hole, this hole is towards cylinder body setting, and can setting be installed for oil controlling valve, this oil controlling valve is to be installed on oil controlling valve seat by cylinder body towards cylinder head direction, also and the outlet joint of this oil controlling valve be towards cylinder body direction, can avoid by this oil controlling valve to other components maintenance produce disturb.

Described engine changeable air valve lift mechanism and the arrangement of oil controlling valve, wherein, the one side of the air inlet side of this cylinder head is provided with oil controlling valve seat, this oil controlling valve seat is the outer wall place that is positioned at timing chain chamber, and this oil controlling valve seat is the maximum height lower than throttle valve body, this oil controlling valve is to be installed on oil controlling valve seat.

Described engine changeable air valve lift mechanism and the arrangement of oil controlling valve, wherein, this oil controlling valve seat has a hole, this hole opening is towards cylinder body, oil controlling valve is to be installed on oil controlling valve seat by cylinder body towards cylinder head direction by this, and the outlet joint of this oil controlling valve is towards cylinder body direction.

Described engine changeable air valve lift mechanism and the arrangement of oil controlling valve, wherein, this oil controlling valve seat has a hole, and this hole opening is towards cylinder head, by this oil controlling valve be by cylinder head towards cylinder body to being installed on oil controlling valve seat, and the outlet joint of this oil controlling valve is towards cylinder head direction.

Described engine changeable air valve lift mechanism and the arrangement of oil controlling valve, wherein, this cylinder body is provided with timing chain tensioner, this oil controlling valve seat be configured to timing chain tensioner slightly in line.

Described engine changeable air valve lift mechanism and the arrangement of oil controlling valve, wherein, this oil controlling valve seat and camshaft holder are and the moulding of cylinder head integrally casting.

Described engine changeable air valve lift mechanism and the arrangement of oil controlling valve, wherein, this oil controlling valve is slightly to become parallel with cylinder head wall while being installed on oil controlling valve seat.

Described engine changeable air valve lift mechanism and the arrangement of oil controlling valve, wherein, this driving oil circuit is provided with the first driving oil circuit and second with respect to oil hydraulic cylinder and drives oil circuit, and this first driving oil circuit is to be positioned at low lift driving member place, and this second driving oil circuit is to be positioned at high-lift driving member place.

Described engine changeable air valve lift mechanism and the arrangement of oil controlling valve, wherein, this first intake cam is low lift air valve air inlet cam, this second intake cam is high-lift air valve air inlet cam.

Described engine changeable air valve lift mechanism and the arrangement of oil controlling valve, wherein, this engine is into slightly level side and arranges, and this oil controlling valve seat is and suction tude forms slightly parellel, and this oil controlling valve is into slightly level side and is arranged on the cylinder head of engine.

[accompanying drawing explanation]

Fig. 1 is the schematic diagram of known cylinder head.

Fig. 2 is the generalized section of engine of the present invention.

Fig. 3 is the schematic diagram of lubricating oil path of the present invention.

Fig. 4 is the schematic appearance of engine of the present invention.

Fig. 5 is the schematic diagram of changeable air valve lift of the present invention mechanism.

Fig. 6, the 7th, the action schematic diagram of changeable air valve lift of the present invention mechanism.

Fig. 8 is that oil controlling valve of the present invention configures another embodiment.

1 engine 11 cylinder heads

2 solenoid valve 21 oil pipe 22 screws

3 engine 31 crankcase 310 bent axles

311 oil pump

312 is main for oil duct 32 cylinder body

321 suction tude

33 cylinder head 331 air inlet ports

332 suction valve 333 exhaust ports

334 outlet valve 335 camshaft holders

336 camshafts

3361 intake cams

3361a the first intake cam

3361b the second intake cam

3362 exhaust cams

337 intake valve driving members

337 ' exhaust valve driving member

The high-lift driving member of 3371 low lift driving member 3372

338 oil hydraulic cylinder 3381 first pistons

3382 second pistons

3383 drive oil circuit 3383a first to drive oil circuit

3383b second drives oil circuit

339 oil controlling valve seats

330 timing chain chambers, 3391 holes

34 cylinder-head covers

4 oil controlling valve 41 asphalt channel 41a bent axles are for oil duct

41b valve driving member is for oil duct

41H drives oil circuit

41L drives oil circuit

42 oilhole 4a outlet joints

5 timing chain 51 timing chain tensioners

6 throttle valve bodys

[embodiment]

For the effect that enables to be easier to understand structure of the present invention and can reach, hereby coordinate graphic explanation as rear:

Engine 3 of the present invention is to be configured in the swing engine 3 on scooter motorcycle to omit horizontal mode.First, refer to shown in Fig. 2, engine 3 of the present invention has a crankcase 31, cylinder body 32, cylinder head 33 and the cylinder-head cover 34 being mounted in cylinder body 32 being mounted on crankcase 31.Crankcase 31, inside is provided with a bent axle 310, please coordinate Fig. 3 to consult, and is provided with an oil pump 311 in this crankcase 31, this oil pump 311 is machine oil to be delivered to one main for oil duct 312, and this is main is communicated to the oil controlling valve 4 that be arranged at cylinder head 33 by crankcase 31 after by cylinder body 32 for oil duct 312.

Cylinder body 32, this cylinder body 32 is to be connected on crankcase 31, and can pass through for timing chain 5, wherein, this cylinder body 32 is provided with a timing chain tensioner 51 in the air inlet port of cylinder head 33 331 sides, and as shown in Fig. 1,4, and this timing chain tensioner 51 is slightly in line with oil controlling valve 4, because these 330 inside, timing chain chamber have more space, therefore can avoid oil controlling valve seat 339 placements to produce hot polymerization collection.

Cylinder head 33, be provided with air inlet port 331 and a suction valve 332 that is positioned at air inlet side, and exhaust port 333 and an outlet valve 334 that is positioned at exhaust side, this throttle valve body 6 sees through suction tude 321 and is connected with the air inlet port 331 of air inlet side, please coordinate Fig. 3 to Fig. 6 to consult, this cylinder head 33 is provided with the camshaft holder 335 of integrally casting moulding between this suction valve 332 and outlet valve 334, this camshaft holder 335 is provided with a rotating camshaft 336, this camshaft 336 is provided with intake cam 3361 and exhaust cam 3362, this intake cam 3361 has the first intake cam 3361a (being low lift cam) and the second intake cam 3361b (being high-lift cam), by this intake cam 3361 and exhaust cam 3362, can make the camshaft 336 can ejection suction valve 332 in the time rotating and the entering of outlet valve 334, exhaust valve driving member 337, 337 ', wherein this intake valve driving member 337 is provided with low lift driving member 3371 and the high-lift driving member 3372 of changeable air valve lift mechanism, this low lift driving member 3371 is provided with high-lift driving member 3372 oil hydraulic cylinder 338 being connected, in this oil hydraulic cylinder 338, be provided with the first piston 3381 that can be promoted by oil pressure, the second piston 3382, and oil controlling valve 4 has the driving oil circuit 3383 that is communicated with oil hydraulic cylinder 338, this driving oil circuit 3383 has the first driving oil circuit 3383a and second and drives oil circuit, it lays respectively at the oil hydraulic cylinder 338 proximal end places of low lift driving member 3371 and high-lift driving member 3372, can select whether to make high-lift driving member 3372 interlocks of this low lift driving member 3371 or start separately by this oil controlling valve 4, this driving oil circuit 3383 is that oil controlling valve seat 339 by these cylinder head 33 outsides is through cylinder head 33 and flow to by camshaft holder 335 in the oil hydraulic cylinder 338 of valve driving member 337 again, wherein, please refer to Fig. 3, shown in 6, this oil controlling valve seat 339 is one sides of one-body molded air inlet port 331 sides that are arranged at cylinder head 33, and form slightly parellel with suction tude 321, and be positioned at the outer wall place of timing chain chamber 330, and 339 maximum heights that are set lower than throttle valve body 6 of this oil controlling valve seat, in addition, this oil controlling valve seat 339 is to be slightly a straight line with timing chain tensioner 51, and be positioned at the same side of timing chain 5, this oil controlling valve seat 339 has a hole 3391, these hole 3391 openings are to arrange towards cylinder body 32, and can setting be installed for oil controlling valve 4, this oil controlling valve 4 is to be installed on oil controlling valve seat 339 by cylinder body 32 towards cylinder head 33 directions, that is the outlet joint 4a of this oil controlling valve 4 is towards cylinder body 32 directions, the high-lift driving member 3372 of another this intake valve driving member 337 is to be configured near oil controlling valve 4, that is the high-lift driving member 3372 of this intake valve driving member 337 compared with low lift driving member 3371 closer to oil controlling valve 4, the i.e. path of the driving oil circuit 41H of this oil controlling valve 4 and high-lift driving member 3372, drive the path of driving oil circuit 41L of low lift driving member 3371 short compared with oil controlling valve 4, omit horizontal mode by 4 one-tenth of oil controlling valves again and be configured on cylinder head 33, can avoid being subject to gravitational impact, and then can reduce the loss of electric power.

Cylinder-head cover 34 is be arranged at cylinder head 33 upper.

The present invention is in the time implementing, refer to shown in Fig. 3, a main oil duct 312 that supplies delivered to by machine oil by oil pump 311 by crankcase 31 interior settings, this is main is communicated to the oil controlling valve 4 that be arranged at cylinder head 33 by crankcase 31 after by cylinder body 32 for oil duct 312, wherein, this oil controlling valve 4 is provided with several asphalt channels 41 in cylinder head 33 inside, and this oil controlling valve 4 is provided with several oilholes 42, can determine the oil duct quantity of cylinder head 33 inside by the oilhole number 42 of oil controlling valve 4, separately, this is main is to be provided with a bent axle for oil duct 41a towards crankcase 31 one end for oil duct 312, please coordinate Fig. 3, 5, 6 consult, this main oil duct 312 that supplies is provided with a valve driving member for oil duct 41b towards one end of cylinder head 34, this valve driving member is communicated in cylinder head 33 for oil duct 41b, be communicated on cylinder head 33 for oil duct 41b by this valve driving member, can make machine oil freely towards intake valve driving member 337 fuel feeding,

Please coordinate Fig. 5, 6 consult, this oil controlling valve 4 is sent into machine oil after cylinder head 33 drives first of oil circuit 3383 to drive in oil circuit 3383a and is entered in oil hydraulic cylinder 338 again, after driving states by the ECU of control centre (not drawing in the diagram) senses vehicle of engine 3, as only needed valve to be low lift aperture time, the ECU of control centre of engine 3 can make oil controlling valve 4 by machine oil by driving oil circuit 3383 to enter in oil hydraulic cylinder 338, as shown in Figure 6, by oil pressure be used for first piston 3381 and the second piston 3382 are passed to high-lift driving member 3372 directions, making by this second piston 3382 is to be positioned at high-lift driving member 3372 inside, first piston 3381 can be located in low lift driving member 3371, now low lift driving member 3371 and high-lift driving member 3372 are into each self-swinging, because low lift driving member 3371 is to contact with the first intake cam 3361a (being low lift cam) of camshaft 336, therefore, now engine 3 air inlet steam valve 332 is to be the low aperture state of raising, as shown in Figure 7, separately in the time that engine 3 is high-lift aperture because driving states changes palpus intake valve, the ECU of control centre of engine 3 can make oil controlling valve 4 that machine oil is entered in oil hydraulic cylinder 338 by the second driving oil circuit 3383b that drives oil circuit 3383, by machine oil hydraulic power be used for first piston 3381 and the second piston 3382 are passed to low lift driving member 3371 directions, to be positioned at low lift driving member 3371 in order to do making first piston 3381, and the second piston 3382 is located between low lift driving member 3371 and high-lift driving member 3372, now low lift driving member 3371 and high-lift driving member 3372 are into interlock form, because high-lift driving member 3372 is to contact with the second intake cam 3361b (being high-lift cam) of camshaft 3361, therefore low lift driving member 3371 is driven by high-lift driving member 3372, can suction valve 332 be reached to predetermined high-lift aperture with the lift degree of the second intake cam 3361b (being high-lift cam), can reach by this object of engine 3 changeable air valve lift.

Another invention oil controlling valve 4 is in the time implementing, as shown in Figure 8, this oil controlling valve seat 339 has a hole 3391, these hole 3391 openings are to arrange towards cylinder head 33, and can setting be installed for oil controlling valve 4, this oil controlling valve 4 is to be installed on oil controlling valve seat 339 by cylinder head 33 towards cylinder body 32 directions, that is the outlet joint 4a of this oil controlling valve 4 is towards cylinder head 33 directions, the high-lift driving member 3372 of this same intake valve driving member 337 is to be configured near oil controlling valve 4, that is the high-lift driving member 3372 of this intake valve driving member 337 compared with low lift driving member 3371 closer to oil controlling valve 4.

Effect of the present invention is, by the one side of air inlet port 331 sides of cylinder head 33, and the outer wall place that is positioned at timing chain chamber 330 arranges an oil controlling valve seat 339, and this oil controlling valve seat 339 is be arranged at air inlet port 331 and be no more than between the maximum height of throttle valve body 6, another this oil controlling valve 4 is to be installed on oil controlling valve seat 339 by cylinder body 32 towards cylinder head 33 directions, that is the outlet joint of this oil controlling valve 4 is towards cylinder body 32 directions, by this, make the oil controlling valve 4 can be away from the high temperature place of engine 3, and then the serviceability that can avoid oil controlling valve seat 339 to form a heat accumulation body and can promote oil controlling valve 4, and reach easy configuration and avoid oil controlling valve 4 to produce to other component maintenances effect of disturbing, separately to be configured near oil controlling valve 4 by the high-lift driving member 3372 of this valve driving member 337, that is the high-lift driving member 3372 of this valve driving member 337 compared with low lift driving member 3371 closer to oil controlling valve 4, can shorten by this oil controlling valve 4 and supply the path of asphalt channel and the consume of oil pressure of high-lift driving member 3372, so can make high-lift driving member 3372 to make kinetic energy more certain, owing to supplying the path of the asphalt channel of high-lift driving member 3372 by shortening oil controlling valve 4, and the consume that makes oil controlling valve 4 supply the oil pressure of high-lift driving member 3372 reduces, the oil pump 311 of supplying by this oil mass can miniaturization, and then can reduce the setup cost of oil pump 311 and reduce the loss of engine 3 power, and can make the configuration of the inner component of engine 3 more can compactification.

In sum, the present invention, by above-mentioned arrangement, really can improve the disappearance of commonly using, and can reach object and effect of institute's demand.

Claims

1. the arrangement of an engine changeable air valve lift mechanism and oil controlling valve, this engine has the cylinder body of being located on crankcase, one is located at the cylinder head in cylinder body, the first side of this cylinder is provided with air inlet port and suction valve, opposite side is provided with exhaust port and outlet valve, one throttle valve body sees through suction tude and is connected with air inlet port, between this suction valve and outlet valve, be provided with a camshaft holder, this camshaft holder is provided with a camshaft, this camshaft has intake cam and exhaust cam, this intake cam and exhaust cam, can promote intake valve driving member and exhaust valve driving member, wherein, this intake cam has the first intake cam and the second intake cam, this intake valve driving member is provided with the low lift driving member corresponding with the first intake cam and the high-lift driving member corresponding with the second intake cam, this low lift driving member is provided with high-lift driving member the oil hydraulic cylinder being connected, in this oil hydraulic cylinder, be provided with the piston that can be promoted by oil pressure, this oil controlling valve is provided with the driving oil circuit that is communicated with oil hydraulic cylinder, it is characterized in that: this driving oil circuit is provided with the first driving oil circuit and second with respect to oil hydraulic cylinder and drives oil circuit, this the first driving oil circuit is to be positioned at low lift driving member place, this the second driving oil circuit is to be positioned at high-lift driving member place, the high-lift driving member of this intake valve driving member is more to approach oil controlling valve compared with low lift driving member, and the path of the driving oil circuit of this oil controlling valve and high-lift driving member, path compared with the driving oil circuit of oil controlling valve driving low lift driving member is short, the one side of the air inlet side of this cylinder head is provided with oil controlling valve seat, this oil controlling valve seat is the outer wall place that is positioned at timing chain chamber, and this oil controlling valve seat is the maximum height lower than throttle valve body, this oil controlling valve is to be installed on oil controlling valve seat.

2. the arrangement of engine changeable air valve lift mechanism as claimed in claim 1 and oil controlling valve, wherein, this oil controlling valve seat has a hole, this hole opening is towards cylinder body, oil controlling valve is to be installed on oil controlling valve seat by cylinder body towards cylinder head direction by this, and the outlet joint of this oil controlling valve is towards cylinder body direction.

3. the arrangement of engine changeable air valve lift mechanism as claimed in claim 1 and oil controlling valve, wherein, this oil controlling valve seat has a hole, this hole opening is towards cylinder head, oil controlling valve is to be installed on oil controlling valve seat by cylinder head towards cylinder body direction by this, and the outlet joint of this oil controlling valve is towards cylinder head direction.

4. the arrangement of engine changeable air valve lift mechanism as claimed in claim 1 and oil controlling valve, wherein, this cylinder body is provided with timing chain tensioner, this oil controlling valve seat be configured to timing chain tensioner slightly in line.

5. the arrangement of engine changeable air valve lift mechanism as claimed in claim 1 and oil controlling valve, wherein, this oil controlling valve seat and camshaft holder are and the moulding of cylinder head integrally casting.

6. the arrangement of engine changeable air valve lift mechanism as claimed in claim 2 and oil controlling valve, wherein, this oil controlling valve is slightly to become parallel with cylinder head wall while being installed on oil controlling valve seat.

7. the arrangement of engine changeable air valve lift mechanism as claimed in claim 1 and oil controlling valve, wherein, this first intake cam is low lift air valve air inlet cam, this second intake cam is high-lift air valve air inlet cam.

8. the arrangement of engine changeable air valve lift mechanism as claimed in claim 1 and oil controlling valve, wherein, this engine is into slightly level side and arranges, and this oil controlling valve seat is and suction tude forms slightly parellel, and this oil controlling valve is into slightly level side and is arranged on the cylinder head of engine.