CN208347852U - A kind of valve control apparatus of engine - Google Patents

Abstract

The utility model provides a kind of valve control apparatus of engine, belongs to field of mechanical technique.It, which solves existing valve control apparatus, will lead to the problems such as engine operation is unstable.The valve control apparatus of this engine, including camshaft and cam pack, the actuator of driving cam pack axial movement is provided on cylinder cap, spline is provided on the lateral surface of camshaft, cam pack includes that at least a pair closes cylinder cam member, it each closes on cylinder cam member and is provided with no lift cams and has lift cams, it closes on the medial surface of cylinder cam member and is provided with spline one, bearing shell one is arranged on camshaft, bearing shell one is fixed on the cylinder cap of engine by bearing block one, roller one is provided between bearing shell one and camshaft, roller one is located in spline and can roll and slide in spline, the both ends of roller one are born against on the end face of corresponding spline one.This valve control apparatus can be improved the stability of engine operation.

Description

A kind of valve control apparatus of engine

Technical field

The utility model belongs to field of mechanical technique, is related to a kind of valve control apparatus of engine.

Background technique

Engine be it is a kind of can the machine that can be converted into mechanical energy, including internal combustion engine, motor etc. of other forms, Internal combustion engine is usually that chemical energy is converted into mechanical energy, such as petrol engine.Petrol engine is widely used in automobile.

According to the difference of vehicle driving state, the traveling of automobile can be divided into three kinds of situations: run at high speed, drive at moderate speed with And it runs at a low speed.Generally, high-power driving status refers to starting, acceleration, upward slope and the engine of automobile under heavy load Run at high speed.Under the existing most of Highway Conditions in China, continues to exceed 120 kilometers/hour and run at high speed situation not More, remaining can each belong to middle low-speed running state.

Currently, running car when in flat good road surface generally maintain in low speed speed, such as 80 kilometers/hour or less Speed, engine is to work at part load, and the power of actual use is the 30%-50% of rated power, this is to internal combustion The economic performance of machine has a great impact, and causes a large amount of wastes of fuel.It was verified that compared with high-power driving status, The discharge of fuel consumption and pernicious gas of the engine under middle low-speed running state does not reduce in the prior art, especially harmful The discharge of gas has increase trend.

In addition, the Load Regulation of vehicular petrol engine is to enter cylinder by changing throttle opening control in the prior art Interior aeration quantity is realized.Automobile in the process of moving driver according to pavement conditions determine throttle (air throttle) aperture size Realize engine output.Therefore, engine is run under unstable operating condition, at this moment residual waste gas quantity, cooling loss, Air inflow and burn rate are all changing, and economy is also different therewith.

Chinese patent literature data disclose propose a kind of engine locally close cylinder management system [application number: 201410841347.9；Publication No.: 104533638A], engine is multi-cylinder, and locally closing cylinder management system includes: engine section Valve testing agency, for detecting the opening amount signal of air throttle；Vehicle speed sensor, for obtaining the travel speed signal of vehicle； Brake signal machine, for obtaining brake signal；Controller, according to above-mentioned travel speed signal, the opening amount signal of air throttle, braking Signal judges whether vehicle current running state meets the part prestored and close cylinder driving conditions, closes cylinder row to meet the part prestored Sailing condition is that condition issues closing partial-cylinder and makes control instruction of remaining cylinder within the scope of predetermined load；Driving dress It sets, receives above-mentioned control instruction, and close partial-cylinder and make remaining cylinder within the scope of predetermined load；Predetermined load model It encloses are as follows: 70%-90%.

Chinese patent literature data disclose propose a kind of cylinder deactivation of engine control device [application number: 201310351767.4；Notification number: 103437894B], including engine cylinder cover, it is located at camshaft and set that engine cylinder covers Cam bit on camshaft, covering to set in engine cylinder makes cam bit move axially realization engine valve opening and closing along camshaft Executing agency；Executing agency includes the solenoid valve connecting with automobile controller being located on cylinder cap；It is arranged on solenoid valve and stops Cylinder controls compression bar and resets compression bar, control compression bar and reset compression bar respectively and be located at two spiral grooves contrary on cam bit It is adapted.Using above-mentioned cylinder deactivation control device, engine can accurately control cylinder deactivation of engine in Smaller load, and then make to send out Motivation remains good power performance and economic performance.

Above-mentioned cylinder deactivation control device bottom bracket is supported on cam bit, and cam bit needs slide on camshaft, Cam bit can make camshaft stress when valve opening and closing switching become larger so also with cam axle simultaneously, or even occur rotating not Smooth situation is unfavorable for the stabilization of engine operation.

Summary of the invention

The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, to propose a kind of valve control of engine The technical issues of device processed, solution is the stability that engine operation how is improved in valve opening switching.

The purpose of this utility model can be realized by the following technical scheme:

A kind of valve control apparatus of engine is provided with multiple cylinders in engine, and engine includes cylinder cap, the cylinder It covers and is provided with valve, valve control apparatus includes the camshaft being arranged on cylinder cap, and driving gas is provided on the camshaft The cam pack of door movement is provided with the actuator that driving cam pack moves axially on camshaft on the cylinder cap, described Spline is provided on the lateral surface of camshaft, which is characterized in that the cam pack includes that at least a pair closes cylinder cam member, often A close on cylinder cam member is provided with no lift cams and has lift cams, is provided on the medial surface for closing cylinder cam member and flower The spline one of keyway cooperation, two of pairing is located on the camshaft closes between cylinder cam member and be arranged with bearing shell one, the axis Watt one is fixed on the cylinder cap of engine by bearing block one, and roller one is provided between the bearing shell one and camshaft, described Roller one is located in spline and can roll and slide in spline, and the both ends of the roller one are born against corresponding On the end face of spline one.

When working normally in cylinder, closing on cylinder cam member for pairing has lift cams to act on valve, make valve with It closes the rotation of cylinder cam member and moves up and down.When needing to close cylinder, the cylinder cam member that closes of actuator driving pairing is integrally moved to one end, Making to close on cylinder cam member has lift cams to be detached from valve and act on valve without lift cams, keeps valve no longer convex with cylinder is closed Gear member is rotated and is moved up and down, and cylinder is closed in valve-closing realization.When needing cylinder, cylinder cam member is closed in actuator driving pairing It is whole mobile to the other end, that is, it moves backward, so that no lift cams is detached from valve and is had lift cams to act on valve, valve Again it moves up and down with the rotation of cylinder cam member is closed, valve opening cylinder.It is small negative in automobile using this valve control apparatus The valve of the partial-cylinder of multicylinder engine is set to can be realized closing when lotus low speed, so that fuel consumption is reduced, in big load high speed When the valve of whole cylinders can be made to open again, to provide enough power, taken into account the economic performance of engine and dynamic Power performance.

During engine valve aperture switches, roller one is not only slided in spline but also is rolled in spline, is rolled Column one sliding make two close cylinder cam member synchronization slided on camshaft, roller one rolling make camshaft in bearing shell one and bearing block Smooth rotation in one makes to close the rotation that sliding of the cylinder cam member on camshaft does not interfere with camshaft in this way, and camshaft is suitable It is smooth that smooth rotation makes valve move up and down, so as to improve the stability of engine operation in valve opening handoff procedure. The both ends of roller one are resisted against on the end face of corresponding spline one, are made two to close cylinder cam member and are connected on camshaft, energy It is enough integrally to slide axially on camshaft, so that two corresponding valves is carried out aperture switching simultaneously, is conducive to engine work The stabilization of work；Bearing shell one is set between bearing block one and roller one, and bearing shell one there can be roughness high by parts processing Surface reduces influence of the sliding of roller one to cam axle, has to reduce the coefficient of friction between roller one and bearing shell one Conducive to the stabilization of engine operation.

In the valve control apparatus of above-mentioned engine, the cam pack further includes at least a pair of of variable-lift cam Part is provided with low lift cams and high-lift cam, the inside of the variable-lift cam part on each variable-lift cam part It is provided with the spline two with spline cooperation on face, is located between two variable-lift cam parts of pairing on the camshaft and covers Equipped with bearing shell two, the bearing shell two is fixed on the cylinder cap of engine by bearing block two, between the bearing shell two and camshaft It is provided with roller two, the roller two is located in spline and can roll and slide in spline, and the two of the roller two End is born against on the end face of corresponding spline two.

Cylinder cam member is closed in the valve connection of a part of cylinder of engine, and the valve connection variable lift of a part of cylinder is convex Gear member.When needing to improve the aperture of cylinder valve, the variable-lift cam part of actuator driving pairing is whole mobile to one end, makes Low lift cams on variable-lift cam part are detached from valve and high-lift cam acts on valve, make valve with variable lift Cam member is rotated and is moved up and down in high open range.When needing to reduce the aperture of cylinder valve, actuator driving pairing Variable-lift cam part it is whole mobile to the other end, that is, move backward, high-lift cam made to be detached from valve and low lift cams It acts on valve, valve moves up and down in the open range of standard with the rotation of cylinder cam member is closed again.It is convex by closing cylinder It, can be convex by mobile variable lift when load drives at moderate speed in the car after gear member makes a part of cylinder of engine close cylinder Gear member acts on high-lift cam on the valve of a part of cylinder, so that the valve opening of cylinder be made to become larger, mentions engine High power.After cylinder cam member and variable-lift cam part are closed in setting simultaneously, keep engine complete when the big load of automobile is run at high speed Portion's cylinder provides high power, and when automobile Smaller load is run at a low speed, partial-cylinder closes the valve of partial-cylinder after cylinder in standard Lift work, the valve that partial-cylinder closes partial-cylinder after cylinder when load drives at moderate speed in the car work in high lift, guarantee Fuel consumption is reduced while power, preferably takes into account the economic performance and power performance of engine.

During engine valve aperture switches, roller two is not only slided in spline but also is rolled in spline, is rolled The sliding of column two slides two variable-lift cam part synchronizations on camshaft, and the rolling of roller two makes camshaft in bearing shell two and axis Smooth rotation in seat two is held, sliding of the variable-lift cam part on camshaft is made not interfere with the rotation of camshaft in this way, It is smooth that the smooth rotation of camshaft makes valve move up and down, to improve the stabilization of engine operation in valve opening handoff procedure Property.

In the valve control apparatus of above-mentioned engine, the lateral surface for closing cylinder cam member and variable-lift cam part On be provided with helicla flute, two of pairing are closed the oppositely oriented of the helicla flute of cylinder cam member, and two variable lifts of pairing are convex The helicla flute of gear member it is oppositely oriented, the actuator includes the solenoid valve being fixed on cylinder cap, the solenoid valve have it is multiple simultaneously With close cylinder cam member and variable-lift cam part is arranged in a one-to-one correspondence, the push rod of the solenoid valve is inserted into corresponding spiral In slot.

After the push rod of solenoid valve is stretched out and is inserted into corresponding helicla flute, with the rotation of camshaft, corresponding to close cylinder convex Gear member or variable-lift cam part move axially on camshaft, and by roller push pairing it is another close cylinder cam member or Person's variable-lift cam part moves axially on camshaft, to realize the switching of valve opening.

In the valve control apparatus of above-mentioned engine, the lateral surface for closing cylinder cam member and variable-lift cam part On be provided with annular groove, the annular groove is arranged in circular ring shape and around camshaft, each annular groove and corresponding helicla flute phase Even, the push rod of the solenoid valve can enter in corresponding annular groove from helicla flute.

The push rod of solenoid valve is stretched out and is inserted into corresponding helicla flute, with the rotation of camshaft, close cylinder cam member or Person's variable-lift cam part moves axially on camshaft；The push rod of solenoid valve enters in annular groove after passing through helicla flute, with The rotation of camshaft, the push rod of solenoid valve move in a ring groove, and to close cylinder cam member or variable-lift cam part into Row axial limiting stablizes engine operation.

In the valve control apparatus of above-mentioned engine, the cylinder cap includes seperated fixed lid and fixed plate, institute It states and is provided with valve lift span on lid, valve push piece is provided in the valve lift span, the inner end of the valve push piece is in Tubular and and valve contacts, the boss in a strip shape of protrusion is provided on the outer end face of the valve push piece, and closes cylinder cam member The outer end face for the boss on valve push piece being correspondingly arranged and no lift cams have the lateral surface of lift cams to lean, and With the boss closed on the valve push piece that cylinder cam member is correspondingly arranged, without lift cams and there is the width phase of lift cams in the axial direction Together；The outer end face and low lift cams or high lift for the boss on valve push piece being correspondingly arranged with variable-lift cam part are convex The lateral surface of wheel leans, and boss, low lift cams and height on the valve push piece being correspondingly arranged with variable-lift cam part Lift cams in the axial direction of same size.

Boss protrudes the outer end face of valve push piece and boss is in a strip shape, while boss and corresponding each cam are in the axial direction It is of same size, avoid boss that from cannot completely disengaging with having lift cams and high-lift cam, keep valve control apparatus work steady It is fixed, be conducive to the stabilization of engine operation.

In the valve control apparatus of above-mentioned engine, the solenoid valve is fixed in fixed plate, the fixed plate There is the limiting slot one being correspondingly arranged with bearing shell one on inner surface, the upper cover of bearing block one is fixed in the limiting slot one, is matched Pair close on cylinder cam member and there are lift cams to enter in limiting slot one, also have on the inner surface of the fixed plate and bearing shell Two limiting slots two being correspondingly arranged are fixed with the upper cover of bearing block two, the variable-lift cam part of pairing in the limiting slot two On low lift cams and high-lift cam enter in limiting slot two.

Limiting slot one and limiting slot two have axial limiting effect, make valve control apparatus the operation is stable.

In the valve control apparatus of above-mentioned engine, it is provided on the lateral surface of the bearing shell one and bearing shell two solid Determine slot, fixed bulge loop corresponding with fixing groove, the fixed bulge loop insertion are provided on the bearing block one and bearing block two It is in corresponding fixing groove and fixed.Pass through fixing groove and the fixed bearing shell one of fixed bulge loop and bearing block one and bearing shell two and axis Seat two is held, two fixing-stable of bearing shell one and bearing shell is made.

In the valve control apparatus of above-mentioned engine, the end face of the roller one is plane or spherical surface, the rolling The end face of column two is plane or spherical surface.The end face of roller one and roller two makes roller one and roller two against steady when being plane Fixed, it is smooth that the end face of roller one and roller two rolls roller one and roller two when being spherical surface.

In the valve control apparatus of above-mentioned engine, several splines are evenly arranged on the camshaft, each Roller one in bearing shell one has quantity that is several and being less than or equal to spline, and can be uniform or substantially uniform point Cloth；Roller two in each bearing shell two has quantity that is several and being less than or equal to spline, and can uniformly or substantially Uniform distribution.Setting had not only made roller one and roller two easy for installation in this way, but also can satisfy the smoothness of cam axle.

Compared with prior art, the utility model has the advantage that

In the setting roller one between cylinder cam member that closes of pairing, roller one is mounted in spline and can be in spline It rolls and bearing shell one is arranged in sliding, the outside of roller one, bearing shell one is fixed on cylinder cap by bearing block one, can be in valve opening The stability of engine operation is improved when degree switching.The variable-lift cam part of pairing is also set up, it is convex in the variable lift of pairing Roller two is set between gear member, and roller two is mounted in spline and can roll and slide in spline, outside roller two Bearing shell two is arranged in side, and bearing shell two is fixed on cylinder cap by bearing block two, preferably takes into account the economic performance and power of engine Performance, and the stability of engine operation can be improved when valve opening switches.

The annular groove communicated with helicla flute is set, there is axial limiting effect, improves the stabilization of valve control apparatus work Property.The boss in a strip shape of protrusion is set on valve push piece, guarantees switching in place, improves the stabilization of valve control apparatus work Property.Limiting slot one and limiting slot two are set in fixed plate, there is axial limiting effect, make valve control apparatus the operation is stable.

Detailed description of the invention

Fig. 1 is that the structural schematic diagram closed at cylinder cam member is equipped in this valve control apparatus；

Fig. 2 is the structural schematic diagram being equipped at variable-lift cam part in this valve control apparatus.

In figure, 1, cylinder cap；1a, lid；1a1, valve lift span；1b, fixed plate；1b1, limiting slot one；1b2, limiting slot Two；2, valve；3, camshaft；3a, spline；4, cylinder cam member is closed；4a, without lift cams；4b, there are lift cams；4c, spiral Slot；4d, annular groove；5, bearing shell one；5a, fixing groove；6, bearing block one；6a, fixed bulge loop；7, roller one；8, variable lift is convex Gear member；8a, low lift cams；8b, high-lift cam；9, bearing shell two；10, bearing block two；11, roller two；12, valve push piece； 12a, boss；13, solenoid valve.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

Embodiment one

As depicted in figs. 1 and 2, a kind of valve control apparatus of engine is provided with multiple cylinders, engine in engine Including cylinder body and cylinder cap 1, cylinder cap 1 includes seperated fixed lid 1a and fixed plate 1b, and lid 1a is fixed on cylinder body.Such as start Machine is 4 cylinder, 16 valve 2, that is, is provided with 4 cylinders, 4 valves 2 are provided on each cylinder, be divided into two inlet valves 2 and two Air outlet valve 2.It is provided with valve 2 on lid 1a, the valve lift span 1a1 being correspondingly arranged with valve 2, valve are provided on lid 1a The valve push piece 12 that can be slided up and down in valve lift span 1a1 is provided in lift span 1a1.The inner end of valve push piece 12 is in Tubular is simultaneously contacted with valve 2, and the boss 12a in a strip shape of protrusion is provided on the outer end face of valve push piece 12, and boss 12a's cuts Face is in rectangle or class rectangle.

Valve control apparatus includes the camshaft 3 being arranged on cylinder cap 1, is provided with what driving valve 2 moved on camshaft 3 Cam pack is provided with the actuator that driving cam pack moves axially on camshaft 3 on cylinder cap 1.The lateral surface of camshaft 3 On be provided with spline 3a, spline 3a is to be uniformly arranged several, for example is provided with 2,3,4,5,6 or 6 A above spline 3a.Cam pack includes that at least a pair closes cylinder cam member 4 and at least a pair of of variable-lift cam part 8, each It closes on cylinder cam member 4 and is provided with no lift cams 4a and has lift cams 4b, be provided with low liter on each variable-lift cam part 8 Journey cam 8a and high-lift cam 8b, is provided with gap between low lift cams 8a and high-lift cam 8b.With close cylinder cam member 4 The outer end face for the boss 12a on valve push piece 12 being correspondingly arranged is with no lift cams 4a or has a lateral surface of lift cams 4b It leans, and with the boss 12a closed on the valve push piece 12 that cylinder cam member 4 is correspondingly arranged, without lift cams 4a and have lift convex Take turns 4b in the axial direction of same size.The outer end for the boss 12a on valve push piece 12 being correspondingly arranged with variable-lift cam part 8 Face and the lateral surface of low lift cams 8a or high-lift cam 8b lean, and with the gas that is arranged on variable-lift cam part 8 Boss 12a, low lift cams 8a and high-lift cam 8b in the axial direction of same size on door push piece 12.

The spline one being provided on the medial surface of cylinder cam member 4 with spline 3a cooperation is closed, is located at pairing on camshaft 3 Two are closed between cylinder cam member 4 and are arranged with bearing shell 1, and bearing shell 1 is fixed on the cylinder cap 1 of engine by bearing block 1.Axis It is provided with fixing groove 5a on watts 1 lateral surface, bearing block 1 is provided with fixed bulge loop 6a, the fixation bulge loop on bearing block 1 6a is embedded into the fixing groove 5a of bearing shell 1 and fixed.There is the limit being correspondingly arranged with bearing shell 1 on the inner surface of fixed plate 1b Position one 1b1 of slot, bearing block 1 include mutually matched lower seat and upper cover, and the upper cover of bearing block 1 is fixed on one 1b1 of limiting slot Interior, the lower cover of bearing block 1 is fixed on lid 1a.Bearing shell 1 can be structure as a whole or separate structure.Two of pairing Closing on cylinder cam member 4 has lift cams 4b to enter in one 1b1 of limiting slot.It is provided between bearing shell 1 and camshaft 3 in circle Columnar roller 1, roller 1 are located in spline 3a and can roll and slide, the side of roller 1 in spline 3a Protrusion spline 3a is simultaneously sticked on the medial surface of bearing shell 1, and the both ends of roller 1 are born against at the end of corresponding spline one On face, the end face of roller 1 is plane or spherical surface.Roller 1 in each bearing shell 1 has several and is less than or equal to flower The quantity of keyway 3a, and being capable of uniform or substantially uniform distribution.For example spline 3a has 4, and roller 1 has 4, and 4 A roller 1 is arranged in correspondingly in spline 3a, and 4 rollers 1 are uniformly distributed；Or spline 3a has 6, rolling Column 1 has 3, and 3 rollers 1 are separated by an empty spline 3a two-by-two and are uniformly distributed；Or spline 3a has 5, rolling Column 1 has 3, and the two sides of one of roller 1 are adjacent with an empty spline 3a, and the two of other two roller 1 Side is adjacent with an empty spline 3a and a roller 1 respectively, 3 substantially uniform distributions of roller 1.

It is provided with the spline two with spline 3a cooperation on the medial surface of variable-lift cam part 8, is located on camshaft 3 and matches Pair two variable-lift cam parts 8 between be arranged with bearing shell 29, bearing shell 29 is fixed on engine by bearing block 2 10 On cylinder cap 1.Fixing groove 5a is provided on the lateral surface of bearing shell 29, bearing block 2 10 is provided with fixed bulge loop 6a, bearing block 2 10 On fixation bulge loop 6a be embedded into it is in the fixing groove 5a of bearing shell 29 and fixed.Have and bearing shell 29 on the inner surface of fixed plate 1b Two 1b2 of limiting slot being correspondingly arranged, bearing block 2 10 include mutually matched lower seat and upper cover, and the upper cover of bearing block 2 10 is fixed In two 1b2 of limiting slot, the lower cover of bearing block 2 10 is fixed on lid 1a.Bearing shell 29 can be structure as a whole or fission Structure.Low lift cams 8a and high-lift cam 8b on two variable-lift cam parts 8 of pairing enter limiting slot two In 1b2.Cylindrical roller 2 11 is provided between bearing shell 29 and camshaft 3, roller 2 11 is located in spline 3a and energy Enough to roll and slide in spline 3a, the side protrusion spline 3a of roller 2 11 is simultaneously sticked on the medial surface of bearing shell 29, The both ends of roller 2 11 are born against on the end face of corresponding spline two, and the end face of roller 2 11 is plane or spherical surface.Often Roller 2 11 in a bearing shell 29 has quantity that is several and being less than or equal to spline 3a, and can uniformly or substantially Uniform distribution.For example spline 3a has 4, roller 2 11 has 4, and spline is arranged in 4 rollers 2 11 correspondingly In 3a, 4 rollers 2 11 are uniformly distributed；Or spline 3a has 6, roller 2 11 has 3,3 rollers, 2 11 liang of two-phases It is uniformly distributed every an empty spline 3a；Or spline 3a has 5, roller 2 11 has 3, one of roller 2 11 Two sides it is adjacent with an empty spline 3a, the two sides of other two roller 2 11 respectively with an empty spline 3a and One roller 2 11 is adjacent, 3 substantially uniform distributions of roller 2 11.

It closes on the lateral surface of cylinder cam member 4 and variable-lift cam part 8 and is provided with helicla flute 4c, two of pairing close cylinder The helicla flute 4c's of cam member 4 is oppositely oriented, and the helicla flute 4c's of two variable-lift cam parts 8 of pairing is oppositely oriented.It closes Annular groove 4d is provided on the lateral surface of cylinder cam member 4 and variable-lift cam part 8, annular groove 4d is in circular ring shape and around cam Axis 3 is arranged, and each annular groove 4d is connected with corresponding helicla flute 4c.Actuator includes the solenoid valve 13 being fixed on cylinder cap 1, electricity Magnet valve 13 have it is multiple and with close cylinder cam member 4 and variable-lift cam part 8 is arranged in a one-to-one correspondence, the push rod of solenoid valve 13 can be inserted Enter into corresponding helicla flute 4c, the push rod of solenoid valve 13 can also be entered out of helicla flute 4c in corresponding annular groove 4d. Solenoid valve 13 can also be replaced with oil cylinder.

It is provided with mounting hole on the medial surface for closing cylinder cam member 4 and variable-lift cam part 8, is provided in mounting hole Spring and ball, matching hole is provided on camshaft 3, and one end of ball is stretched out mounting hole and is simultaneously able to enter in matching hole, ball With axially position effect.When the push rod in the annular groove 4d closed on cylinder cam member 4 inserted with solenoid valve 13, pairing it is another A ball closed on cylinder cam member 4 is embedded into corresponding matching hole.It is inserted into when in the annular groove 4d on variable-lift cam part 8 When having the push rod of solenoid valve 13, the ball on another variable-lift cam part 8 of pairing is embedded into corresponding matching hole.

When needing to close cylinder, the push rod of the solenoid valve 13 in left side is stretched out and is inserted into corresponding helicla flute 4c in Fig. 1, with The rotation of camshaft 3 is closed cylinder cam member 4 and is slided to the right, and the lateral surface of no lift cams 4a is resisted against the boss of valve push piece 12 On 12a, valve 2 stops working.When needing cylinder, the pusher retracted of the solenoid valve 13 in left side in Fig. 1, right side in Fig. 1 The push rod of solenoid valve 13 is stretched out and is inserted into corresponding helicla flute 4c, with the rotation of camshaft 3, closes cylinder cam member 4 to the left Sliding, has the lateral surface of lift cams 4b to be resisted against on the boss 12a of valve push piece 12, and valve 2 restores to work normally.It needs to adjust When saving low lift, the push rod of the solenoid valve 13 on the left of Fig. 2 is stretched out and is inserted into corresponding helicla flute 4c, with camshaft 3 Rotation, variable-lift cam part 8 slides to the right, and the lateral surface of low lift cams 8a is resisted against the boss 12a of valve push piece 12 On, the work of 2 standard lift of valve.When needing to adjust to high lift, the pusher retracted of the solenoid valve 13 on the left of Fig. 2, right side in Fig. 2 The push rod of solenoid valve 13 stretch out and be inserted into corresponding helicla flute 4c, with the rotation of camshaft 3, variable-lift cam part 8 slide to the left, and the lateral surface of high-lift cam 8b is resisted against on the boss 12a of valve push piece 12, the work of 2 high lift of valve.

Cylinder cam member 4 is closed in the connection of valve 2 of a part of cylinder of engine, and the connection of valve 2 of a part of cylinder is variable to rise Journey cam member 8.Closing cylinder cam member 4 by movement makes a part of cylinder of engine close cylinder, can be in automobile Smaller load low speed row When sailing, enough power is provided and can reduce fuel consumption.Closing cylinder cam member 4 by movement closes a part of cylinder of engine After cylinder, high-lift cam 8b can be made to act on one by mobile variable-lift cam part 8 when load drives at moderate speed in the car On the valve 2 of partial-cylinder, so that 2 aperture of valve of cylinder be made to become larger, engine is made to improve power.Cylinder cam is closed by movement Part 4 and variable-lift cam part 8 make cylinder all work, and make engine whole cylinder when the big load of automobile is run at high speed High power is provided.This makes it possible to the economic performances and power performance of preferably taking into account engine.Use this valve control apparatus It can make the fuel consumption per hundred kilometers of engine within 5 liters.

During 2 aperture of engine valve switches, roller 1 is not only slided in spline 3a but also is rolled in spline 3a Dynamic, the sliding of roller 1 makes two to close the synchronization of cylinder cam member 4 to slide on camshaft 3, and the rolling of roller 1 makes camshaft 3 in bearing shell 1 and bearing block 1 in smooth rotation, make to close sliding of the cylinder cam member 4 on camshaft 3 in this way and do not interfere with camshaft 3 Rotation；Meanwhile roller 2 11 not only in spline 3a sliding again rolled in spline 3a, roller 2 11 slide make two can The synchronization of cam of variable lift part 8 is slided on camshaft 3, and the rolling of roller 2 11 makes camshaft 3 in bearing shell 29 and bearing block 2 10 Smooth rotation makes sliding of the variable-lift cam part 8 on camshaft 3 not interfere with the rotation of camshaft 3 in this way；Camshaft It is smooth that 3 smooth rotations make valve 2 move up and down, to improve the stability of engine operation in 2 aperture handoff procedure of valve.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (9)

1. a kind of valve control apparatus of engine, multiple cylinders are provided in engine, engine includes cylinder cap (1), described It is provided on cylinder cap (1) valve (2), valve control apparatus includes the camshaft (3) being arranged on cylinder cap (1), the camshaft (3) it is provided with the cam pack of driving valve (2) movement on, driving cam pack is provided on the cylinder cap (1) in camshaft (3) actuator moved axially on is provided with spline (3a) on the lateral surface of the camshaft (3), which is characterized in that described Cam pack includes that at least a pair closes cylinder cam member (4), each closes on cylinder cam member (4) and is provided with no lift cams (4a) and has Lift cams (4b) are provided with the spline one with spline (3a) cooperation on the medial surface for closing cylinder cam member (4), described convex It is closed between cylinder cam member (4) on wheel shaft (3) positioned at two matched and is arranged with bearing shell one (5), the bearing shell one (5) passes through bearing One (6) of seat are fixed on the cylinder cap (1) of engine, and roller one (7), institute are provided between the bearing shell one (5) and camshaft (3) Roller one (7) is stated to be located in spline (3a) and can roll and slide, the both ends of the roller one (7) in spline (3a) It bears against on the end face of corresponding spline one.

2. the valve control apparatus of engine according to claim 1, which is characterized in that the cam pack further include to Lack a pair of variable-lift cam part (8), is provided with low lift cams (8a) on each variable-lift cam part (8) and high lift is convex It takes turns (8b), the spline two with spline (3a) cooperation, the cam is provided on the medial surface of the variable-lift cam part (8) It is located between two variable-lift cam parts (8) of pairing on axis (3) and is arranged with bearing shell two (9), the bearing shell two (9) passes through axis It holds seat two (10) to be fixed on the cylinder cap (1) of engine, is provided with roller two between the bearing shell two (9) and camshaft (3) (11), the roller two (11) is located in spline (3a) and can roll and slide, the roller two in spline (3a) (11) both ends are born against on the end face of corresponding spline two.

3. the valve control apparatus of engine according to claim 2, which is characterized in that it is described close cylinder cam member (4) and It is provided on the lateral surface of variable-lift cam part (8) helicla flute (4c), two of pairing are closed the helicla flute of cylinder cam member (4) (4c's) is oppositely oriented, oppositely oriented, the actuator packet of the helicla flute (4c) of two variable-lift cam parts (8) of pairing Include the solenoid valve (13) being fixed on cylinder cap (1), the solenoid valve (13) have it is multiple and with close cylinder cam member (4) and variable lift Cam member (8) is arranged in a one-to-one correspondence, and the push rod of the solenoid valve (13) is inserted into corresponding helicla flute (4c).

4. the valve control apparatus of engine according to claim 3, which is characterized in that it is described close cylinder cam member (4) and It is provided on the lateral surface of variable-lift cam part (8) annular groove (4d), the annular groove (4d) is in circular ring shape and around cam Axis (3) setting, each annular groove (4d) are connected with corresponding helicla flute (4c), and the push rod of the solenoid valve (13) can be from spiral Slot (4c) enters in corresponding annular groove (4d).

5. according to the valve control apparatus of any engine of claim 2-4, which is characterized in that cylinder cap (1) packet Seperated fixed lid (1a) and fixed plate (1b) are included, is provided with valve lift span (1a1), the valve on the lid (1a) It being provided with valve push piece (12) in lift span (1a1), the inner end of the valve push piece (12) is cylindrical in shape and contacts with valve (2), The boss (12a) in a strip shape of protrusion is provided on the outer end face of the valve push piece (12), it is corresponding with cylinder cam member (4) are closed to set The outer end face for the boss (12a) on valve push piece (12) set is with no lift cams (4a) or has an outside of lift cams (4b) Face leans, and with the boss (12a) closed on the valve push piece (12) that cylinder cam member (4) is correspondingly arranged, without lift cams (4a) And have lift cams (4b) in the axial direction of same size；The valve push piece (12) being correspondingly arranged with variable-lift cam part (8) On the outer end face of boss (12a) and the lateral surface of low lift cams (8a) or high-lift cam (8b) lean, and with can The boss (12a) on valve push piece (12), low lift cams (8a) and the high-lift cam that cam of variable lift part (8) is correspondingly arranged (8b) in the axial direction of same size.

6. the valve control apparatus of engine according to claim 3 or 4, which is characterized in that the solenoid valve (13) is solid It is scheduled on fixed plate (1b), there is the limiting slot one being correspondingly arranged with bearing shell one (5) on the inner surface of the fixed plate (1b) (1b1), the interior upper cover for being fixed with bearing block one (6) of the limiting slot one (1b1), closing on cylinder cam member (4) for pairing have liter Journey cam (4b) enters in limiting slot one (1b1), also has on the inner surface of the fixed plate (1b) corresponding with bearing shell two (9) The limiting slot two (1b2) of setting, the interior upper cover for being fixed with bearing block two (10) of the limiting slot two (1b2), the variable liter of pairing Low lift cams (8a) and high-lift cam (8b) on journey cam member (8) enter in limiting slot two (1b2).

7. according to the valve control apparatus of any engine of claim 2-4, which is characterized in that the bearing shell one (5) With fixing groove (5a) is provided on the lateral surface of bearing shell two (9), be respectively provided on the bearing block one (6) and bearing block two (10) There is fixed bulge loop (6a) corresponding with fixing groove (5a), the fixed bulge loop (6a) is embedded into corresponding fixing groove (5a) and solid It is fixed.

8. according to the valve control apparatus of any engine of claim 2-4, which is characterized in that the roller one (7) End face be the end face of the plane perhaps spherical surface roller two (11) be plane or spherical surface.

9. according to the valve control apparatus of any engine of claim 2-4, which is characterized in that the camshaft (3) On be evenly arranged with several splines (3a), the roller one (7) in each bearing shell one (5) have it is several and be less than or equal to spline The quantity of slot (3a), and being capable of uniform or substantially uniform distribution；Roller two (11) in each bearing shell two (9) has several And it is less than or equal to the quantity of spline (3a), and being capable of uniform or substantially uniform distribution.