CN106545381B - A kind of axial displacement multi-mode four-bar Variabale valve actuation system - Google Patents
A kind of axial displacement multi-mode four-bar Variabale valve actuation system Download PDFInfo
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- CN106545381B CN106545381B CN201611144600.0A CN201611144600A CN106545381B CN 106545381 B CN106545381 B CN 106545381B CN 201611144600 A CN201611144600 A CN 201611144600A CN 106545381 B CN106545381 B CN 106545381B
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Classifications
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- 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
- F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
-
- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34413—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using composite camshafts, e.g. with cams being able to move relative to the camshaft
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- 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
-
- 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
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
-
- 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
- F01L2710/00—Control of valve gear, speed or power
- F01L2710/003—Control of valve gear for two stroke engines
-
- 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
- F01L2760/00—Control of valve gear to facilitate reversing, starting, braking of four stroke engines
Abstract
A kind of axial displacement multi-mode four-bar Variabale valve actuation system, belongs to engine valve actuations field.It mainly includes camshaft and cam shaft sleeve, axial moving mechanism, valve adjustments mechanism, valve control machanism etc..At least provided with first cam and the second cam in cam shaft sleeve, by using axial moving mechanism, realize the conversion between the various modes such as engine two-stroke drive mode, four stroke drive modes, two-stroke braking mode, four stroke braking modes, further by being used cooperatively with valve control machanism, best ventilation of the engine under different operating conditions finally is realized, achievees the purpose that comprehensive raising engine power performance, fuel economy, emission performance and braking safety.The present invention is proposed towards practical application, high reliablity, compact-sized, reduces requirement of the system to each mechanism, and each mechanism is all made of more mature technology, and practical potentiality are high in a short time for system, have a good application prospect.
Description
Technical field
The present invention relates to a kind of axial displacement multi-mode four-bar Variabale valve actuation systems, belong to engine valve drive
Dynamic field.
Background technique
With energy and environmental problem get worse and people's being absorbed in the driving of vehicle and safety, not
Carry out engine to need under the premise of meeting discharge index, comprehensively considers dynamic property, economy, emission performance and safety.This is just
It needs driving and braking within the scope of full working scope, optimizes engine performance.And changeable air valve, the stroke changeable being concerned at present
The technologies such as number, cylinder deactivation, auxiliary braking, new combustion mode, variable compression ratio, variable EGR are only transported in engine small range mostly
Its performance is improved in row conditioned area.As existing changeable air valve technology is only applied to the drive in fixed punch number of passes engine
It starts building under condition, and is mostly used for the inlet valve of gasoline engine to reduce pumping loss.Stroke changeable number technology is at home and abroad still located
In conceptual phase, and it is served only under driving operating condition.The existing vehicle with cylinder stopping technique can only provide cylinder deactivation, therefore,
Relatively low to consumption improvement degree, can only obtain 7% or so oil consumption mostly reduces.On the other hand, with engine ownership
It sharply increases, vehicle safety is increasingly valued by people, and auxiliary braking system is classified as vehicle by more and more countries
Indispensable one of attachment.However at present auxiliary braking system exist mostly brake component work long hours be easy overheat, braking effect
Rate quickly reduces, braking efficiency controllable degree is low, braking when vehicle is easy sideslip, braking system occupies limited vehicle space etc.
Problem.In current engine auxiliary braking technology, the braking effect for depressurizing auxiliary braking technology is best, it is in import/exhaust
On the basis of door operating condition is constant, near to subtract compared with small guide vane unlatching exhaust valve or pressure reducing valve to realize
Braking effect is pressed, the every 720 ° of crank angles of engine realize a braking cycle, belong to the braking of four strokes, braking effect can not
Meet the requirement when braking of vehicle heavy load.
Aiming at the problem that above-mentioned engine research field, Dalian University of Technology's Internal Combustion Engine institute burning seminar is based on
The thought of partition zone optimizing engine performance, proposes a kind of multimode engine within the scope of driving-braking full working scope, and provides each
The requirement using operating condition and to the valve opening and closing moment of kind mode: under the driving operating condition of low speed and heavy load, using two-stroke
Drive mode, to achieve the purpose that improve power output；Under other engine driving operating conditions, using four stroke drive modes,
To achieve the purpose that reduce fuel consumption and emission formation；Under heavy load damped condition, using two-stroke braking mode, with
Achieve the purpose that improve braking power output；Under small load brake operating condition, using four stroke braking modes, according to deceleration loading
Requirement, change the number of stroke of braking mode adjust braking output, with achieve the purpose that improve vehicle safety.
Currently, practical Variabale valve actuation system remains valve cam mostly, mechanical structure is mostly used greatly,
It is broadly divided into: 1) camshaft phase modulation formula, such as VVT system, the Vanos system of BMW of TOYOTA；2) changeable air valve liter stage by stage
Formula, such as the VTEC system of Honda；3) continuously variable valve lift formula, such as the Valvetronic system of BMW, Hyundai
CVVL system etc., this kind of system realizes the opening and closing timing and maximum of each cylinder valve of engine by control intermediate transmission mechanism
The synchronous adjustment of stroke three.
For relatively having cam Variabale valve actuation system, system without cam can realize more flexible valve event, simultaneously
Structure is complicated, expensive, and needs more to be deepened in terms of reliability, durability and valve temperature compensation
The research entered.This kind of system mainly includes two class of electromagnetic type and electric-liquid type.Electromagnetic type system is in the accurate control of movement, valve stroke
Adjustable degree etc. remains to be further improved.For electromagnetic type system, electric-liquid type system has relatively higher valve can
The features such as adjusting flexibility ratio, higher power density, flexible arrangement is Variabale valve actuation system most potential at present.This is
System mainly includes common rail oil feeding type and cam oil feeding type two major classes.
Common rail oil feeding type system eliminates valve cam, drives oil in the open/close states and accumulator by controlling solenoid valve
Pressure, adjust the opening and closing timing and range of valve.Ford company, Lucas company etc. carried out research to this, and future is still
Need to system cost, response speed, in terms of carry out in-depth study.With engine cylinder number, single cylinder valve number
And the increase of revolving speed, there is also the problem of a) common rail pipe are bulky, difficulty in arrangement for the system；B) made in system
The quantity of high-speed large-flow solenoid valve is excessive, and the solenoid valve cost determined by current solenoid valve material and processing technology
Higher, therefore, the overall cost of the system is higher.It is more tired that these problems cause traditional common rail oil feeding type system automobile-usedization
Difficulty, this kind of system are widely used on the exhaust valve of low speed two stroke engine peculiar to vessel.
By the advantage of comprehensive mechanical formula and common rail oil feeding type system, cam oil feeding type system receives researcher and Sheng
Produce the extensive concern of manufacturer, such as Multiair system, the VCM system of ABB of FIAT.This kind of system uses cam-plunger type
Oil feeder replaces accumulator, occupy little space, it can be achieved that the opening and closing timing of valve it is separately adjustable, opening and closing timing determines row
Journey.There is still a need for improved in terms of following two for this kind of system: a) quantity of oil feeder and solenoid valve needed for system is more, is
Overall cost of uniting is higher；B) valve operation adjustable extent is limited by fuel feeding and control device, cannot achieve valve opening and closing just
When and stroke three between it is separately adjustable, engine two-stroke drive mode and two-stroke braking mode requirement also cannot be achieved
360 °C of A/ circulation valve operational process etc..
Since the Variabale valve actuation system of existing functionization is mostly used for the engine of four stroke drive modes, Bu Nengman
The requirement of sufficient multimode engine, therefore develop a set of high reliablity and meet the variable valve actuation of multimode engine requirement
System is imperative.Engine two-stroke drive mode, four stroke drive modes, two-stroke braking mode and the braking of four strokes
Under mode, there is greatly difference in import/exhaust door open frequency, unlatching timing and unlatching duration, which greatly increases
The development difficulty for the Variabale valve actuation system that multimode engine requires.Such as due to two-stroke drive mode or two-stroke system
Dynamic model formula requires the every 360 ° of crank angles operation of import/exhaust door primary, four stroke drive modes and the requirement of four stroke braking modes
The every 720 ° of crank angles operation of import/exhaust door is primary, and therefore, this requirement needs to realize two-stroke driving/braking mode and four punchings
The multi-mode Variabale valve actuation system switched between journey driving/braking mode, which must have, realizes both valve running frequencies
Between the function that flexibly switches.Even import/exhaust door is opened timing and is opened under the constant driving of number of stroke and braking mode
Opening the duration still has very big difference.If using an actuated by cams, by using mechanical continuous variable valve
Come if realizing the small unlatching duration, valve maximum lift is accordingly reduced, volumetric efficiency and pumping loss etc. refer to control mechanism
Mark is more difficult to be met simultaneously.If realizing the small unlatching duration by draining using hydraulic valve control mechanism, high speed
Lower hydraulic valve control mechanism will appear as well system and be unable to fully oil-filled problem, this, which will lead to the system, can not apply to high speed
On engine.When switching between various modes, the phase adjusted of very wide-angle is needed, vane type vvt mechanism common at present
It is unable to satisfy requirement, and the electronic vvt mechanism that can satisfy requirement is expensive, can not popularize on a large scale in short term, therefore, it is necessary to
The requirement to the adjustable range of valve opening timing is reduced as far as possible, does not have to VVT or using common minor adjustment model to realize
The purpose of the VVT enclosed.Even it is different that working conditions of different engines remains that valve-driving system provides under same mode
Unlatching timing, maximum lift and the unlatching duration of import/exhaust door.At the same time, various parts should use as far as possible
More mature technology finally obtains good application prospect to improve a possibility that system is practical in a short time.At present not yet
There is a Variabale valve actuation system that can meet requirements above simultaneously, therefore the exploitation of multi-mode Variabale valve actuation system is compeled
In the eyebrows and eyelashes.
Summary of the invention
It is an object of the invention to: by designing a kind of axial displacement multi-mode four-bar Variabale valve actuation system,
For realizing: engine two-stroke drive mode, four stroke drive modes, two (a) are realized by using axial moving mechanism
Conversion between the various modes such as stroke braking mode, four stroke braking modes, meets engine in different modes to ventilation
Requirement；(b) in each mode, different operating points under each pattern are advanced optimized by using valve control machanism
Generator operating conditions reach comprehensive and improve engine power performance, fuel economy, emission performance and braking safety etc. property
The purpose of energy；(c) four-bar valve control machanism is arranged in pairs or groups to meet practical application to changeable air valve degree of flexibility, cost, system
The requirement of arrangement etc., each mechanism use more mature technology as far as possible, to improve a possibility that system is practical in a short time,
Finally to obtain good application prospect.
The technical scheme adopted by the invention is that: this axial displacement multi-mode four-bar Variabale valve actuation system,
It includes valve actuating mechanism, camshaft, cam shaft sleeve, axial moving mechanism, valve control machanism, valve adjustments mechanism.
Wherein, cam shaft puts on setting first cam and the second cam.First cam uses single-tab cam lobes or biconvex
Cam lobes, the second cam use single-tab cam lobes or biconvex cam lobes, and biconvex cam lobes use molded line
Identical and 180 ° of camshaft degrees of phase phase difference two protrusions.Valve adjustments mechanism have valve adjustments mechanism input terminal,
Valve adjustments mechanism output end and valve regulating mechanism adjustable side.Axial moving mechanism adjusts the axial position of cam shaft sleeve,
The cam for determining driving valve adjustments mechanism input terminal is the first cam either the second cam.Valve control machanism is direct or logical
The position that transmission mechanism adjusts valve adjustments mechanism adjustable side is crossed, valve adjustments mechanism output end drives directly or by transmission mechanism
It takes offence door drive mechanism.
It increases third cam on cam shaft set, and third cam uses single-tab cam lobes or biconvex cam
Blade.Axial moving mechanism adjusts the axial position of cam shaft sleeve, determines to drive valve adjustments directly or by transmission mechanism
The cam of mechanism input terminal is the first cam, the second cam or third cam.
It increases a valve actuating mechanism, i.e. left side valve actuating mechanism and right side valve actuating mechanism, increases valve
Drive axle.It is finally direct or logical respectively that valve adjustments mechanism output end first passes through valve actuation bridge again directly or by transmission mechanism
Cross transmission mechanism driving left side valve actuating mechanism and right side valve actuating mechanism.
It increases a valve actuating mechanism, a valve control machanism and a valve adjustments mechanism, that is, uses left side
Valve control machanism, left side valve adjustments mechanism, right side valve control machanism, right side valve adjustments mechanism, left side valve actuation
Mechanism and right side valve actuating mechanism increase valve actuation bridge.Cam first passes through valve actuation directly or by transmission mechanism again
Bridge finally drives left side valve adjustments mechanism input terminal and right side valve adjustments mechanism to input directly or by transmission mechanism respectively
End, left side valve control machanism adjust the position of left side valve adjustments mechanism adjustable side, right side gas directly or by transmission mechanism
Door control mechanism adjusts the position of right side valve adjustments mechanism adjustable side, left side valve adjustments mechanism directly or by transmission mechanism
Output end directly or by transmission mechanism drive left side valve actuating mechanism, right side valve adjustments mechanism output end directly or by
Transmission mechanism driving right side valve actuating mechanism.
Two cams are switched, the cam shaft, which is put on, is provided with two switching slot.The axial moving mechanism is adopted
With two electromagnetic actuators.Or the axial moving mechanism uses two hydraulic actuating mechanisms and two hydraulic control machines
Structure.
Three cams are switched, the cam shaft, which is put on, is provided with two switching slot.The axial moving mechanism is adopted
With three electromagnetic actuators.Or the axial moving mechanism uses three hydraulic actuating mechanisms and three hydraulic control machines
Structure.
The valve adjustments mechanism uses four-bar mechanism.The valve control machanism uses mechanical, electro-hydraulic, electromagnetism, motor,
Or electric mechanism is held using hydraulic unit, adjustable track, adjusting rod or four-bar mechanism as it as its driving part
Row component.
The transmission mechanism is sliding block, push rod, rocker arm, swing arm, four-bar mechanism or Hydraulic Main from piston type mechanism.
The beneficial effects of the present invention are: (a) this axial displacement multi-mode four-bar Variabale valve actuation system is main
Including camshaft, axial moving mechanism, valve adjustments mechanism, valve control machanism etc., it is convex that cam shaft sleeve includes at least first
Wheel and the second cam, by using axial moving mechanism, realize engine two-stroke drive mode, four stroke drive modes,
Conversion between the various modes such as two-stroke braking mode, four stroke braking modes, to meet engine in different mode
Under requirement to ventilation；(b) in each mode, it by using valve control machanism, realizes to the difference under each pattern
The generator operating conditions of operating point advanced optimize, and finally improve engine power performance, fuel economy, discharge comprehensively
Property and braking safety；(c) present invention can provide four-bar valve adjustments mechanism according to practical type for user, have preferable
Changeable air valve degree of flexibility and good reliability meet the various operating conditions of engine on the basis of high performance-price ratio
Under requirement to import/exhaust door operating condition；(d) present invention is high reliablity, compact-sized by rationally designing, and reduces pair
The requirement of various parts, each mechanism use more mature technology as far as possible, to improve a possibility that system is practical in a short time
Finally to obtain good application prospect.
Detailed description of the invention
The present invention is further described with embodiment with reference to the accompanying drawing.
Fig. 1 is the axial displacement multi-mode four-bar variable valve actuation system of the dull section of biconvex wheel drive list valve operation
The schematic diagram of system.
Fig. 2 is the axial displacement multi-mode four-bar variable valve actuation system of the dull section of biconvex wheel drive dual valve operation
The schematic diagram of system.
Fig. 3 is the double axial displacement multi-mode four-bar variable valve actuation systems adjusted of biconvex wheel drive dual valve operation
The schematic diagram of system.
Fig. 4 is the axial displacement multi-mode four-bar variable valve actuation system of the dull section of three actuated by cams list valves operation
The schematic diagram of system.
Fig. 5 is a kind of exemplary schematic diagram of four-bar Variabale valve actuation system.
Fig. 6 is that have the axial displacement of the dull section of electromagnetic type biconvex wheel drive list valve operation of single camshaft axle sleeve more
The schematic diagram of mode four-bar Variabale valve actuation system.
Fig. 7 is that have the axial displacement of the dull section of three actuated by cams list valve of electromagnetic type operation of single camshaft axle sleeve more
The schematic diagram of mode four-bar Variabale valve actuation system.
Fig. 8 is that have the axial displacement of the dull section of fluid pressure type biconvex wheel drive list valve operation of single camshaft axle sleeve more
The schematic diagram of mode four-bar Variabale valve actuation system.
Fig. 9 is that there are two the axial displacements of the dull section of the fluid pressure type biconvex wheel drive list valve of cam shaft sleeve operation for tool
The schematic diagram of multi-mode four-bar Variabale valve actuation system.
Figure 10 is inlet valve cam schematic diagram under four stroke drive modes.
Figure 11 is exhaust valve cam schematic diagram under four stroke drive modes.
Figure 12 is inlet valve cam schematic diagram under four stroke braking modes.
Figure 13 is exhaust valve cam schematic diagram under four stroke braking modes.
Figure 14 is inlet valve cam schematic diagram under two-stroke drive mode.
Figure 15 is exhaust valve cam schematic diagram under two-stroke drive mode.
Figure 16 is inlet valve cam schematic diagram under two-stroke braking mode.
Figure 17 is exhaust valve cam schematic diagram under two-stroke braking mode.
Figure 18 is the axial displacement multi-mode four-bar variable valve actuation of the single camshaft axle sleeve with two groups of cams
System schematic.
In figure: 1, cylinder cap；2, valve actuating mechanism；201, the first valve actuating mechanism；202, duaspiracle driving mechanism；
2A, left side valve actuating mechanism；2B, right side valve actuating mechanism；2-1, No.1 valve actuating mechanism；2-2, No. two valve actuations
Mechanism；3, camshaft；3-1, No.1 camshaft；3-2, No. two camshafts；4, cam shaft sleeve；401, the first cam；402,
Two cams；401A, the first cam of left side；Left side 402A, the second cam；401B, the first cam of right side；402B, right side second are convex
Take turns 403, third cam；404, the first switching slot；405, the second switching slot；4-1, No.1 cam shaft sleeve；401-1, No.1
One cam；402-1, the second cam of No.1；404-1, the first switching slot of No.1；405-1, the second switching slot of No.1；4-2, No. two
Cam shaft sleeve；401-2, No. two first cams；402-2, No. two second cams；404-2, No. two first switching slot；405-2,
No. two second switching slot；5, axial moving mechanism；501, the first electromagnetic actuator；501b, the switching of the first electromagnetic actuator
Pin；502, the second electromagnetic actuator；502b, the second electromagnetic actuator switching pin；503, third electromagnetic actuator；
503b, third electromagnetic actuator switching pin；511, the first hydraulic actuating mechanism；511a, the first hydraulic actuating mechanism drive mouth；
511b, the first hydraulic actuating mechanism switching pin；511k, the first hydraulic actuating mechanism reset spring；512, the second hydraulic execution machine
Structure；512a, the second hydraulic actuating mechanism drive mouth；512b, the second hydraulic actuating mechanism switching pin；512k, the second hydraulic execution
Reset spring；521, the first hydraulic control；521a, the first hydraulic control drive mouth；521p, the first hydraulic control
Mechanism high-pressure mouth processed；521t, the first hydraulic control low pressure port；522, the second hydraulic control；522a, the second hydraulic control
Mechanism processed drives mouth；522p, the second hydraulic control high-pressure mouth；522t, the second hydraulic control low pressure port；53, low pressure
Source；54, high-voltage power supply；511-1, the first hydraulic actuating mechanism of No.1；511a-1, the first hydraulic actuating mechanism of No.1 drive mouth；
511b-1, No.1 the first hydraulic actuating mechanism switching pin；511k-1, No.1 the first hydraulic actuating mechanism reset spring；512-1,
The second hydraulic actuating mechanism of No.1；512a-1, the second hydraulic actuating mechanism of No.1 drive mouth；512b-1, No.1 second is hydraulic holds
Row mechanism switching pin；512k-1, No.1 the second hydraulic actuating mechanism reset spring；511-2, No. two first hydraulic actuating mechanisms；
511a-2, No. two first hydraulic actuating mechanisms drive mouth；511b-2, No. two first hydraulic actuating mechanism switching pins；511k-2, two
Number the first hydraulic actuating mechanism reset spring；512-2, No. two second hydraulic actuating mechanisms；512a-2, No. two second hydraulic execution
Mechanism drives mouth；512b-2, No. two second hydraulic actuating mechanism switching pins；512k-2, No. two second hydraulic actuating mechanisms reset
Spring；55, the first common rail chamber；56, the second common rail chamber；6, valve control machanism；601, the first valve control machanism；602, second
Valve control machanism；6-1, No.1 valve control machanism；6-2, No. two valve control machanisms；6A, left side valve control machanism；
6B, right side valve control machanism；6G, adjusting rod；6DA, the first hinge joint of adjusting rod；6DB, the second hinge joint of adjusting rod；7, gas
Door regulating mechanism；7a, valve adjustments mechanism input terminal；7b, valve adjustments mechanism output end；7c, valve adjustments mechanism adjustable side；
701, the first valve adjustments mechanism；701a, the first valve adjustments mechanism input terminal；701b, the first valve adjustments mechanism output end；
701c, the first valve adjustments mechanism adjustable side；702, duaspiracle regulating mechanism；702a, duaspiracle regulating mechanism input terminal；
702b, duaspiracle regulating mechanism output end；702c, duaspiracle regulating mechanism adjustable side；7-1, No.1 valve adjustments mechanism；
7a-1, No.1 valve adjustments mechanism input terminal；7b-1, No.1 valve adjustments mechanism output end；7c-1, No.1 valve adjustments mechanism
Adjustable side；7-2, No. two valve adjustments mechanisms；7a-2, No. two valve adjustments mechanism input terminals；7b-2, No. two valve adjustments mechanisms
Output end；7c-2, No. two valve adjustments mechanism adjustable sides；7A, left side valve adjustments mechanism；7Aa, left side valve adjustments mechanism are defeated
Enter end；7Ab, left side valve adjustments mechanism output end；7Ac, left side valve adjustments mechanism adjustable side；7B, right side valve adjustments machine
Structure；7Ba, right side valve adjustments mechanism input terminal；7Bb, right side valve adjustments mechanism output end；7Bc, right side valve adjustments mechanism
Adjustable side；7K；Reset spring；7G1, the first bar；7G2, the second bar；7G3, third bar；The strut of 7Z1, the first bar；7DA, first
Hinge joint；7DB, the second hinge joint；7DC, third hinge joint；8, valve actuation bridge.
Specific embodiment
The present invention relates to a kind of axial displacement multi-mode four-bar Variabale valve actuation systems.It includes valve actuation machine
Structure 2, camshaft 3, cam shaft sleeve 4, axial moving mechanism 5, valve control machanism 6, valve adjustments mechanism 7.Fig. 1 is double cam
Drive the schematic diagram of the axial displacement multi-mode four-bar Variabale valve actuation system of single dull section of valve operation.Cam shaft
First cam 401 and the second cam 402 are set on set 4.First cam 401 uses single-tab cam lobes or biconvex cam
Blade, the second cam 402 use single-tab cam lobes or biconvex cam lobes, and biconvex cam lobes use molded line phase
Same and 180 ° of camshaft degrees of phase phase difference two protrusions.Valve adjustments mechanism 7 have valve adjustments mechanism input terminal 7a,
Valve adjustments mechanism output end 7b and valve regulating mechanism adjustable side 7c.The axial direction of the adjusting cam shaft sleeve 4 of axial moving mechanism 5
Position determines that the cam of driving valve adjustments mechanism input terminal 7a is the first cam 401 or the second cam 402.Valve control
Mechanism 6 processed adjusts the position of valve adjustments mechanism adjustable side 7c, valve adjustments mechanism output end 7b directly or by transmission mechanism
Valve actuating mechanism 2 is driven directly or by transmission mechanism.The transmission mechanism is sliding block, push rod, rocker arm, swing arm, four bar machines
Structure or Hydraulic Main are from piston type mechanism.
Fig. 2 is the axial displacement multi-mode four-bar variable valve actuation system of the dull section of biconvex wheel drive dual valve operation
The schematic diagram of system.It increases a valve actuating mechanism 2, i.e. left side valve actuating mechanism 201 and right side valve actuating mechanism
202, increase valve actuation bridge 8.Valve adjustments mechanism output end 7b first passes through valve actuation bridge 8 again directly or by transmission mechanism
Finally left side valve actuating mechanism 201 and right side valve actuating mechanism 202 are driven directly or by transmission mechanism respectively.It realizes
The synchronous adjustment of first valve actuating mechanism 201 and duaspiracle driving mechanism 202.
Fig. 3 is the double axial displacement multi-mode four-bar variable valve actuation systems adjusted of biconvex wheel drive dual valve operation
The schematic diagram of system.It increases by 2, valve control machanisms 6 of a valve actuating mechanism and a valve adjustments mechanism 7, that is, adopts
With left side valve control machanism 601, left side valve adjustments mechanism 701, right side valve control machanism 602, right side valve adjustments machine
Structure 702, left side valve actuating mechanism 201 and right side valve actuating mechanism 202 increase valve actuation bridge 8.Cam is first direct or logical
It crosses transmission mechanism and passes through valve actuation bridge 8 again finally respectively directly or by the input of transmission mechanism driving left side valve adjustments mechanism
End 701a and right side valve adjustments mechanism input terminal 702a, left side valve control machanism 601 are adjusted directly or by transmission mechanism
The position of left side valve adjustments mechanism adjustable side 701c, right side valve control machanism 602 adjust right directly or by transmission mechanism
The position of side valve adjustments mechanism adjustable side 702c, left side valve adjustments mechanism output end 701b drive directly or by transmission mechanism
Dynamic left side valve actuating mechanism 201, right side valve adjustments mechanism output end 702b drive right side gas directly or by transmission mechanism
Door drive mechanism 202.Realize the separately adjustable of the first valve actuating mechanism 201 and duaspiracle driving mechanism 202.
Fig. 4 is the axial displacement multi-mode four-bar variable valve actuation system of the dull section of three actuated by cams list valves operation
The schematic diagram of system.It increases third cam 403 in cam shaft sleeve 4, third cam 403 using single-tab cam lobes or
Biconvex cam lobes.Axial moving mechanism 5 adjusts the axial position of cam shaft sleeve 4, determines directly or by transmission mechanism
The cam for driving valve adjustments mechanism input terminal 7a is the first cam 401, the second cam 402 or third cam 403.Setting
The case where more cams, is similar, is not repeated.
The valve adjustments mechanism 7 uses four-bar mechanism.Valve adjustments mechanism 7 may include the first bar 7G1, the second bar
7G2, third bar 7G3.It may also include four-bar mechanism reset spring 7K according to actual needs.Valve adjustments mechanism input terminal 7a can be set
It sets on the strut of a bar in the first bar 7G1 or third bar 7G3 or this two bar, valve adjustments mechanism output end 7b is set
On the strut for setting a bar on a bar in other two bar or in other two bar, valve control machanism 6 passes through
Adjust the position of valve adjustments mechanism adjustable side 7c adjust relative position between some hinge joint of each bar and cylinder cap 1 and/
Or the distance of two hinge joints of certain bar.The bar that the distance of two hinge joints of certain bar is referred to as certain bar is long.This kind of four-bar mechanism
A variety of connection types can be used.If the first bar 7G1 is by the first hinge joint 7DA and 1 fixed hinge of cylinder cap or as valve tune
Section mechanism input terminal 7a directs or through sliding block or by push rod or by rocker arm or by swing arm or by four
Linkage is in contact with cam, and the first bar 7G1 is hinged by the second hinge joint 7DB and the second bar 7G2, and the second bar 7G2 passes through the
The hinged valve control machanism 6 of three hinge joint 7DC and third bar 7G3 is adjusted between another hinge joint and cylinder cap 1 of third bar 7G3
Position and/or third bar 7G3 bar it is long.For another example the first bar 7G1 by the first hinge joint 7DA and 1 fixed hinge of cylinder cap or
Sliding block is directed or through as valve adjustments mechanism input terminal 7a or by push rod or is passed through rocker arm or is passed through swing arm
Or be in contact by four-bar mechanism with cam, the second bar 7G2 is hinged by third hinge joint 7DC and third bar 7G3, third bar
7G3 adjusts the bar of the first bar 7G1 and/or the second bar 7G2 by the 4th hinge joint and 1 fixed hinge of cylinder cap, valve control machanism 6
It is long.If the first bar 7G1 is hinged by the second hinge joint 7DB and the second bar 7G2, the second bar 7G2 passes through third hinge joint 7DC and the
Three bar 7G3 are hinged, and the first bar 7G1 and third bar 7G3 are in contact with valve control machanism 6 respectively, and valve control machanism 6 adjusts the
Position between the bar length of one bar 7G1 and/or the bar length of third bar 7G3 and/or another hinge joint and cylinder cap 1 of the first bar 7G1
It sets and/or the position between another hinge joint and cylinder cap 1 of third bar 7G3.In addition, valve adjustments mechanism 7 can also include
First bar 7G1, the second bar 7G2 and sliding block.Valve adjustments mechanism input terminal 7a may be provided at the first bar 7G1 or sliding block or this
On one strut in two parts, valve adjustments mechanism output end 7b is arranged on a part in other two part or it
On the strut for the part remaininged in two parts, valve control machanism 6 by adjust the position of valve adjustments mechanism adjustable side 7c come
Adjust bar length and/or the track of sliding block etc. of the relative position and/or certain bars between each component.This kind of four-bar mechanism can be used
A variety of connection types.As the first bar 7G1 and 1 fixed hinge of cylinder cap or valve adjustments mechanism input terminal 7a direct or through cunning
Block is in contact by push rod or by rocker arm or by swing arm or by four-bar mechanism with cam, the second bar 7G2
Hinged with sliding block, sliding block is moved along trapped orbit, and valve control machanism 6 adjusts the bar of the first bar 7G1 and/or the second bar 7G2
It is long.If the first bar 7G1 and the second bar 7G2 is hinged, the second bar 7G2 is hinged with sliding block, and sliding block is moved along trapped orbit, valve control
The bar length of first bar 7G1 of the adjusting of mechanism 6 processed and/or the bar of the second bar 7G2 are long.Such as the first bar 7G1 and 1 fixed hinge of cylinder cap or
Valve adjustments mechanism input terminal 7a direct or through sliding block or by push rod or by rocker arm or by swing arm or
It is in contact by four-bar mechanism with cam, the first bar 7G1 and the second bar 7G2 are hinged, and sliding block is moved along trapped orbit, valve control
Mechanism 6 processed adjusts the position between the bar length of the second bar 7G2 and/or another hinge joint and sliding block of the second bar 7G2.Such as first
Bar 7G1 and 1 fixed hinge of cylinder cap or valve adjustments mechanism input terminal 7a direct or through sliding block or by push rod or
It being in contact by rocker arm or by swing arm or by four-bar mechanism with cam, the first bar 7G1 and the second bar 7G2 are hinged, the
Two bar 7G2 are hinged with sliding block, and sliding block is moved along track, position and direction of 6 adjustable track of valve control machanism etc..Fig. 5 is
A kind of exemplary schematic diagram of four-bar Variabale valve actuation system.First bar 7G1 is solid by the first hinge joint 7DA and cylinder cap 1
It is fixed hinged.First bar 7G1 is hinged by the second hinge joint 7DB and the second bar 7G2.Second bar 7G2 by third hinge joint 7DC with
Third bar 7G3 is hinged.Cam is in contact by sliding block, i.e. push rod with another fulcrum of third bar 7G3, and contact point is as valve
Regulating mechanism input terminal 7a.Valve adjustments mechanism output end 7b is arranged on the strut 7Z1 of the first bar 7G1, valve adjustments mechanism
Adjustable side 7c is arranged on the strut of third bar 7G3.Reset spring 7K is arranged on third bar 7G3.
Various ways can be used in valve control machanism 6.Valve control machanism 6 using mechanical, electro-hydraulic, electromagnetism, motor or
Electric mechanism is as control unit, using hydraulic unit, adjustable track, adjusting rod or four-bar mechanism as execution unit.Such as
Valve control machanism 6 may include mechanical, electro-hydraulic, electromagnetism, motor or the mechanisms such as electrical as control unit and adjustable track, gas
Door regulating mechanism adjustable side 7c is in contact with the output end of control mechanism and adjustable track simultaneously, and valve control machanism 6 adjusts control
The output quantity of the output end of mechanism processed, thus realize that valve adjustments mechanism adjustable side 7c is pushed by the output end of control mechanism, edge
Adjustable track operation.Valve control machanism 6 may also include mechanical, electro-hydraulic, electromagnetism, motor or the mechanisms such as electrical as control
Component and adjusting rod 6G, adjusting rod 6G pass through adjusting rod the first hinge joint 6DA and 1 fixed hinge of cylinder cap, valve adjustments mechanism tune
It saves end 7c to be arranged on adjusting rod 6G or its strut, control mechanism adjusts adjusting rod 6G around the first hinge joint of adjusting rod 6DA
Rotation, to change the position of valve adjustments mechanism adjustable side 7c.As shown in figure 5, adjusting rod 6G is hinged by adjusting rod first
Point 6DA and 1 fixed hinge of cylinder cap, the fixed hinge of strut that adjusting rod 6G passes through adjusting rod the second hinge joint 6DB and third bar 7G3
It connects, the second hinge joint of adjusting rod 6DB is valve adjustments mechanism adjustable side 7c.Change the rotation of adjusting rod 6G by control mechanism
Angle realizes the adjusting of valve adjustments mechanism, the position 7c, adjustable side.Valve control machanism 6 may also include mechanical, electro-hydraulic, electromagnetism,
Motor or the mechanisms such as electrical are as control unit and four-bar mechanism.If four-bar mechanism includes the first adjusting rod, the second adjusting rod
With third adjusting rod, the first adjusting rod and 1 fixed hinge of cylinder cap, the first adjusting rod and the second adjusting rod are hinged, the second adjusting rod
Hinged with third adjusting rod, third adjusting rod and 1 fixed hinge of cylinder cap, control mechanism adjusts the first adjusting rod or third is adjusted
A bar or other two adjusting rod in the rotation angle of bar, valve adjustments mechanism adjustable side 7c and other two adjusting rod
In the strut of a bar be in contact.If valve control machanism 6 can also include that the first adjusting rod, the second adjusting rod and adjusting are slided
Block, the first adjusting rod and 1 fixed hinge of cylinder cap, the first adjusting rod is hinged with adjusting slider, and adjusting slider is moved along trapped orbit
It is dynamic.Valve control machanism 6 controls the rotation angle of the first adjusting rod, valve adjustments mechanism adjustable side 7c and the second adjusting rod or
Adjusting slider or the strut of one of which are in contact.Or valve control machanism 6 controls to adjust the amount of movement of sliding block, gas
Door regulating mechanism adjustable side 7c is in contact with the first adjusting rod or the second adjusting rod or the strut of one of which.In reality
In the application of border, above-mentioned component needs to be deformed according to actual needs.As adjusting rod 6G can be replaced with eccentric wheel.Adjust cam
It can be replaced with on-fixed fulcrum or eccentric wheel of push rod or lever etc..
Fig. 6 is that have the axial displacement of the dull section of electromagnetic type biconvex wheel drive list valve operation of single camshaft axle sleeve more
The schematic diagram of mode four-bar Variabale valve actuation system.The first cam 401, the second cam are provided in cam shaft sleeve 4
402, the first switching slot 404, the second switching slot 405, the first electromagnetic actuator 501 and the second electromagnetic actuator 502.First
Electromagnetic actuator 501 has the first electromagnetic actuator switching pin 501b.Second electromagnetic actuator 502 has the second electromagnetism
Executing agency switching pin 502b.Current driving valve adjustments mechanism input terminal 7a's is the first cam 401, when the first electromagnetism executes
Mechanism 501 is motivated, and when the second electromagnetic actuator 502 is not motivated, the first electromagnetic actuator switching pin 501b downlink is simultaneously
Protrude into the first switching slot 404, push cam shaft sleeve 4 be moved to the left, drive valve adjustments mechanism input terminal 7a cam by
First cam 401 switches to the second cam 402.Current driving valve adjustments mechanism input terminal 7a's is the second cam 402, when the
One electromagnetic actuator 501 is not motivated, when the second electromagnetic actuator 502 is motivated, the second electromagnetic actuator switching pin
502b downlink simultaneously protrudes into the second switching slot 405, and cam shaft sleeve 4 is pushed to move right.Drive valve adjustments mechanism input terminal
The cam of 7a switches to the first cam 401 by the second cam 402.When the first electromagnetic actuator 501 and the second electromagnetism execute machine
When structure 502 is not motivated, cam shaft sleeve 4 is without axial movement.First switching slot 404 and the second switching slot 405 are completely
Separation.First switching slot, 404 right side changeover portion and 405 left side changeover portion of the second switching slot can also coincide.
Fig. 7 is that have the axial displacement of the dull section of three actuated by cams list valve of electromagnetic type operation of single camshaft axle sleeve more
The schematic diagram of mode four-bar Variabale valve actuation system.Increase third cam 403 in cam shaft sleeve 4.Increase third electromagnetism
Executing agency 503.Third electromagnetic actuator 503 has third electromagnetic actuator switching pin 503b.First switching slot 404 is right
Side changeover portion and 405 left side changeover portion of the second switching slot coincide.Currently driving valve actuation regulating mechanism input terminal 7a's is
Second cam 402, when the first electromagnetic actuator 501 is motivated, the second electromagnetic actuator 502 and third electromagnetic actuator
503 when not motivated, the first electromagnetic actuator drive pin 501b downlink and is protruded into the first switching slot 404, is pushed convex
Wheel shaft axle sleeve 4 is moved to the left, and valve adjustments mechanism input terminal 7a is driven to switch to third cam 403 by the second cam 402.Currently
Driving valve adjustments mechanism input terminal 7a is third cam 403, when the first electromagnetic actuator 501 and third electromagnetic actuator
503 are not motivated, when the second electromagnetic actuator 502 is motivated, the second electromagnetic actuator drive pin 502b downlink and
It protrudes into the second switching slot 405, cam shaft sleeve 4 is pushed to move right, driving valve adjustments mechanism input terminal 7a is convex by third
Wheel 403 switches to the second cam 402.Current driving valve adjustments mechanism input terminal 7a is the second cam (402), when third electromagnetism
Executing agency 503 is motivated, when the first electromagnetic actuator 501 and the second electromagnetic actuator 502 are not motivated, third electricity
It magnetic executing agency drive pin 503b downlink and protrudes into the second switching slot 405, cam shaft sleeve 4 is pushed to move right, drive
Valve adjustments mechanism input terminal 7a switches to the first cam 401 by the second cam 402.Current driving valve adjustments mechanism input terminal
7a is the first cam 401, when the first electromagnetic actuator 501 and third electromagnetic actuator 503 are not motivated, the second electromagnetism
It when executing agency 502 is motivated, the second electromagnetic actuator drive pin 502b downlink and protrudes into the first switching slot 404, pushes away
Moving cam axis axle sleeve 4 is moved to the left, and valve adjustments mechanism input terminal 7a is driven to switch to the second cam by the first cam (401)
402.When first electromagnetic actuator 501, the second electromagnetic actuator 502 and third electromagnetic actuator 503 are not motivated,
Cam shaft sleeve 4 is without axial movement.
Fig. 8 is that have the axial displacement of the dull section of fluid pressure type biconvex wheel drive list valve operation of single camshaft axle sleeve more
The schematic diagram of mode four-bar Variabale valve actuation system.Fluid pressure type axial moving mechanism includes two sets of hydraulic actuating mechanisms, two
Cover hydraulic control, high-voltage power supply 54 and low pressure source 53.Hydraulic actuating mechanism uses reciprocating-piston mechanism, including first is hydraulic
Executing agency 511 and the second hydraulic actuating mechanism 512.First hydraulic actuating mechanism 511 drives including the first hydraulic actuating mechanism
Mouth 511a, the first hydraulic actuating mechanism drive pin 511b and the first hydraulic actuating mechanism reset spring 511k.Second hydraulic execution
Mechanism 512 includes the second hydraulic actuating mechanism driving mouth 512a, the second hydraulic actuating mechanism drive pin 512b and second is hydraulic holds
Row reset spring 512k.Hydraulic control includes the first hydraulic control 521 and the second hydraulic control 522.
First hydraulic control 521 includes the first hydraulic control high-pressure mouth 521p, the first hydraulic control low pressure port 521t
Mouth 521a is driven with the first hydraulic control.Second hydraulic control 522 includes the second hydraulic control high-pressure mouth
522p, the second hydraulic control low pressure port 522t and the second hydraulic control drive mouth 522a.First hydraulic actuating mechanism
Driving mouth 511a is connected with the first hydraulic control driving mouth 521a.Second hydraulic actuating mechanism drives mouth 512a and the second liquid
Control mechanism driving mouth 522a is pressed to be connected.First hydraulic control high-pressure mouth 521p and the second hydraulic control high-pressure mouth
522p is connected with high-voltage power supply 54.First hydraulic control low pressure port 521t and the second hydraulic control low pressure port 522t are equal
It is connected with low pressure source 53.When first hydraulic control 521 is not motivated, the first hydraulic control high-pressure mouth 521p is blocked
Plug, the first hydraulic control low pressure port 521t are connected with the first hydraulic control driving mouth 521a.First hydraulic control machine
When structure 521 is motivated, the first hydraulic control low pressure port 521t is blocked, the first hydraulic control high-pressure mouth 521p and the
One hydraulic control drives mouth 521a to be connected.When second hydraulic control 522 is not motivated, the second hydraulic control is high
Mouth 512p is pressed to be blocked, the second hydraulic control low pressure port 522t is connected with the second hydraulic control driving mouth 522a.The
When two hydraulic controls 522 are motivated, the second hydraulic control low pressure port 522t is blocked, and the second hydraulic control is high
Pressure mouth 512p is connected with the second hydraulic control driving mouth 522a.Current driving valve adjustments mechanism input terminal 7a's is first
Cam 401, and the first hydraulic control 521 is motivated, and when the second hydraulic control 522 is not motivated, first is hydraulic
It executing agency's drive pin 511b downlink and protrudes into the first switching slot 404, cam shaft sleeve 4 is pushed to be moved to the left, drive gas
Door regulating mechanism input terminal 7a switches to the second cam 402 by the first cam 401.Current driving valve adjustments mechanism input terminal 7a
Be the second cam 402, the first hydraulic control 521 is not motivated, when the second hydraulic control 522 is motivated, second
It hydraulic actuating mechanism drive pin 512b downlink and protrudes into the second switching slot 405, cam shaft sleeve 4 is pushed to move right, drive
The regulating mechanism input terminal 7a that takes offence by the second cam 402 switches to the first cam 401.First hydraulic control 521 and
When two hydraulic controls 522 are not motivated, cam shaft sleeve 4 is without axial movement.Fluid pressure type axial moving mechanism into
When three cam of row switches, need to increase a hydraulic actuating mechanism and hydraulic control.It is not repeated herein.
Fig. 9 is that there are two the axial displacements of the dull section of the fluid pressure type biconvex wheel drive list valve of cam shaft sleeve operation for tool
The schematic diagram of multi-mode four-bar Variabale valve actuation system.Fluid pressure type axial moving mechanism include four sets of hydraulic actuating mechanisms,
Two sets of hydraulic controls, high-voltage power supply 54 and low pressure source 53.Hydraulic actuating mechanism includes the first hydraulic actuating mechanism of No.1 511-1
With the second hydraulic actuating mechanism of No.1 512-1, No. two first hydraulic actuating mechanism 511-2 and No. two second hydraulic actuating mechanisms
512-2.The first hydraulic actuating mechanism of No.1 511-1 includes the first hydraulic actuating mechanism of No.1 driving mouth 511a-1, No.1 first
Hydraulic actuating mechanism drive pin 511b-1 and No.1 the first hydraulic actuating mechanism reset spring 511k-1.The hydraulic execution of No.1 second
Mechanism 512-1 includes the second hydraulic actuating mechanism of No.1 driving mouth 512a-1, No.1 the second hydraulic actuating mechanism drive pin 512b-
1 and No.1 the second hydraulic actuating mechanism reset spring 512k-1.No. two first hydraulic actuating mechanism 511-2 include No. two first liquid
Pressure actuator drives mouth 511a-2, No. two first hydraulic actuating mechanism drive pin 511b-2 and No. two first hydraulic actuating mechanisms
Reset spring 511k-2.No. two second hydraulic actuating mechanism 512-2 include No. two second hydraulic actuating mechanisms driving mouth 512a-2,
No. two second hydraulic actuating mechanism drive pin 512b-2 and No. two second hydraulic actuating mechanism reset spring 512k-2.Hydraulic control
Mechanism includes the first hydraulic control 521 and the second hydraulic control 522.Wherein, the first hydraulic control 521 includes
First hydraulic control high-pressure mouth 521p, the first hydraulic control low pressure port 521t and the first hydraulic control drive mouth
521a.Second hydraulic control 522 includes the second hydraulic control high-pressure mouth 522p, the second hydraulic control low pressure port
522t and the second hydraulic control drive mouth 522a.The first hydraulic actuating mechanism of No.1 drives mouth 511a-1 and No. two first liquid
Pressure actuator driving mouth 511a-2 directs or through the first common rail chamber 55 and the first hydraulic control driving mouth 521a
It is connected.The second hydraulic actuating mechanism of No.1 drives mouth 512a-1 and No. two second hydraulic actuating mechanism driving mouth 512a-2 direct
Or mouth 522a is driven to be connected with the second hydraulic control by the second common rail chamber 56.First hydraulic control high-pressure mouth
521p and the second hydraulic control high-pressure mouth 522p are connected with high-voltage power supply 54.First hydraulic control low pressure port 521t and
Second hydraulic control low pressure port 522t is connected with low pressure source 53.When first hydraulic control 521 is not motivated, first
Hydraulic control high-pressure mouth 521p is blocked, and the first hydraulic control low pressure port 521t and the first hydraulic control drive
Mouth 521a is connected.When first hydraulic control 521 is motivated, the first hydraulic control low pressure port 521t is blocked, and first
Hydraulic control high-pressure mouth 521p is connected with the first hydraulic control driving mouth 521a.Second hydraulic control 522 is not
When being motivated, the second hydraulic control high-pressure mouth 512p is blocked, the second hydraulic control low pressure port 522t and the second liquid
Control mechanism driving mouth 522a is pressed to be connected.When second hydraulic control 522 is motivated, the second hydraulic control low pressure port
522t is blocked, and the second hydraulic control high-pressure mouth 512p is connected with the second hydraulic control driving mouth 522a.Work as forerunner
That dynamic No.1 valve adjustments mechanism input terminal 7a-1 is No.1 the first cam 401-1, drives No. two valve adjustments mechanism input terminals
That 7a-2 is No. two first cam 401-2, and the first hydraulic control 521 is motivated, and the second hydraulic control 522 is not
It when being motivated, the first hydraulic actuating mechanism of No.1 drive pin 511b-1 downlink and protrudes into the first switching slot of No.1 404-1, pushes away
Dynamic No.1 cam shaft sleeve 4-1 is moved to the left, and drives the cam of No.1 valve adjustments mechanism input terminal 7a-1 convex by No.1 first
Wheel 401-1 is switched to the second cam of No.1 402-1；Meanwhile No. two first hydraulic actuating mechanism drive pin 511b-2 downlinks and
It protrudes into No. two first switching slot 404-2, No. two cam shaft sleeve 4-2 is pushed to be moved to the left, drive No. two valve adjustments mechanisms
The cam of input terminal 7a-2 is switched to No. two second cam 402-2 by No. two first cam 401-2.Current driving No.1 valve tune
That save mechanism input terminal 7a-1 is No.1 the second cam 402-1, and driving No. two valve adjustments mechanism input terminal 7a-2's is No. two
Second cam 402-2, and the first hydraulic control 521 is not motivated, when the second hydraulic control 522 is motivated, one
It number the second hydraulic actuating mechanism drive pin 512b-1 downlink and protrudes into the second switching slot of No.1 405-1, pushes No.1 cam
Axis axle sleeve 4-1 moves right, and the cam of No.1 valve adjustments mechanism input terminal 7a-1 is driven to be switched by No.1 the second cam 402-1
To the first cam of No.1 401-1；Meanwhile No. two second hydraulic actuating mechanism drive pin 512b-2 downlinks and protruding into No. two second
In switching slot 405-2, No. two cam shaft sleeve 4-2 is pushed to move right, drives No. two valve adjustments mechanism input terminal 7a-2's
Cam is switched to No. two first cam 401-2 by No. two second cam 402-2.
For the system with multiple cam shaft sleeves 4, fluid pressure type axial moving mechanism needs a set of first are hydraulic
Control mechanism 521 and a set of second hydraulic control 522, and need first equal with cam shaft sleeve quantity is hydraulic to hold
Row mechanism 511, the driving mouth of these the first hydraulic actuating mechanisms 511 direct or through the first common rail chamber 55 and first hydraulic
Control mechanism drives mouth 521a to be connected；Second hydraulic actuating mechanism 512 equal with cam shaft sleeve quantity is needed, these second
The driving mouth of hydraulic actuating mechanism 512 directs or through the second common rail chamber 56 and the second hydraulic control driving mouth 522a
It is connected.First hydraulic control 521 controls all the first hydraulic actuating mechanism 511 synchronous operation, realizes all cams
Synchronizing for axis axle sleeve 4 is moved to the left；Second hydraulic control 522 controls the synchronous fortune of the second all hydraulic actuating mechanisms 512
Row, realizes that all synchronizing for cam shaft sleeve 4 move right, finally realizes the first cam in all cam shaft sleeves 4
401 and the second switching between cam 402.
For the Variabale valve actuation system for multimode engine, engine has based on the actual application requirements
Which mode selects the types of cam lobes.Figure 10 is inlet valve cam schematic diagram under four stroke drive modes.Figure 11 is four
Exhaust valve cam schematic diagram under stroke drive mode.Figure 12 is inlet valve cam schematic diagram under four stroke braking modes.Figure 13 is
Exhaust valve cam schematic diagram under four stroke braking modes.Figure 14 is inlet valve cam schematic diagram under two-stroke drive mode.Figure 15
It is exhaust valve cam schematic diagram under two-stroke drive mode.Figure 16 is inlet valve cam schematic diagram under two-stroke braking mode.Figure
17 be exhaust valve cam schematic diagram under two-stroke braking mode.It can such as be adopted with meeting the vehicle based on low-speed big power output
With four stroke drive modes and two-stroke drive mode, then, the cam of air inlet side selects Figure 10 and Figure 14, the cam of exhaust side
Select Figure 11 and Figure 15.Four stroke drive modes such as can be used to meet the vehicle based on the auxiliary braking safety of heavy-duty vehicle
With two-stroke braking mode, then, the cam of air inlet side selects Figure 10 and Figure 16, and the cam of exhaust side selects Figure 11 and Figure 17.
Such as with meet the vehicle of the auxiliary braking safety of heavy-duty vehicle also can be used four stroke drive modes, four stroke braking modes and
Two-stroke braking mode, then, three cams, i.e. Figure 10, Figure 12 and Figure 16, the cam of exhaust side may be selected in the cam of air inlet side
Three cams, i.e. Figure 11, Figure 13 and Figure 17 may be selected.Such as to need to meet low-speed big power output simultaneously and meet heavy duty
The vehicle of the auxiliary braking safety of vehicle uses four stroke drive modes, two-stroke drive mode and two-stroke braking mode,
So, three cams, i.e. Figure 10, Figure 14 and Figure 16 may be selected in the cam of air inlet side, and three cams may be selected in the cam of exhaust side,
That is Figure 11, Figure 15 and Figure 17.Due to number of stroke it is constant in the case where, import/exhaust door running frequency is constant, then, import/exhaust door
It is possible that driven using a cam, it is individually or convex in camshaft actuated end 4 with being arranged in by valve control machanism
Wheel shaft phase-regulating mechanism matches to provide corresponding valve opening timing for specific operating point and open the duration.Number of stroke
Constant situation, drive mode and braking mode most rise to the valve opening timing of import/exhaust door, unlatching duration, valve higher
There is very big difference in the requirement of journey, the difference of valve opening timing is bigger, it is desirable that camshaft phase regulating mechanism
Adjustable extent is bigger, once expensive electronic VVT is needed beyond the common adjustable range such as vane type vvt mechanism；Such as
Fruit uses an actuated by cams, and the small unlatching duration is realized by using mechanical continuous variable valve control machanism
Words, valve maximum lift can be reduced accordingly, in fact it could happen that can not meet different mode simultaneously to unlatching duration and maximum lift
Requirement, cannot achieve best ventilation.Under two-stroke drive mode and two-stroke braking mode, or in four stroke drive modes
It under four stroke braking modes, the unlatching timing of inlet valve and opens the duration and is not much different, the unlatching timing of exhaust valve and open
It is larger to open duration difference.Therefore, the constant situation of number of stroke is also needed according to the actual situation using one or two cams
To determine.
For the Variabale valve actuation system for single-mode engine, such as four stroke drive modes, air inlet side
Cam select Figure 10.Under different operating conditions, two to three different cams are selected.Using such as under low speed and load operating condition has
The small cam for opening duration and small lift, using with unlatching duration and high-lift greatly under high speed high load capacity operating condition
Cam.For another example, under low speed same cylinder two inlet valve asynchronous operations, i.e., an inlet valve is with big valve stroke and unlatching
Duration operation, another inlet valve is with small valve stroke and opens duration operation, can enhance In Cylinder Flow, improve
The performance of engine therefore can be by using the structure of such as Figure 18, and left cam and right cam under the low speed has not
Same cam profile or left side valve control machanism 6A and right side valve control machanism 6B using the methods of different control amount come
It realizes.
Figure 18 is the axial displacement multi-mode four-bar variable valve actuation of the single camshaft axle sleeve with two groups of cams
System schematic.Increase a valve actuating mechanism 2, that is, uses left side valve actuating mechanism 2A and right side valve actuating mechanism
2B.Increase by first cam 401 and second cam 402, that is, uses the first cam of left side 401A, the second cam of left side
402A, right side the first cam 401B and right side the second cam 402B.When cam shaft sleeve is in leftward position, the first cam of left side
401A directs or through transmission mechanism driving left side valve actuating mechanism 2A, right side the first cam 401B and directs or through biography
Motivation structure driving right side valve actuating mechanism 2B.When cam shaft sleeve is in right positions, left side the second cam 402A directly or
Person drives left side valve actuating mechanism 2A, right side the second cam 402B to direct or through transmission mechanism driving by transmission mechanism
Right side valve actuating mechanism 2B.
Claims (8)
1. a kind of axial displacement multi-mode four-bar Variabale valve actuation system, it includes valve actuating mechanism (2), feature
Be: it further includes camshaft (3), cam shaft sleeve (4), axial moving mechanism (5), valve control machanism (6), valve adjustments machine
Structure (7)；Wherein, the first cam (401) and the second cam (402) are set in cam shaft sleeve (4)；First cam (401) uses
Perhaps the second cam of biconvex cam lobes (402) uses single-tab cam lobes or biconvex blistering to single-tab cam lobes
Impeller blade, biconvex cam lobes use molded line identical and two protrusions of 180 ° of camshaft degrees of phase phase difference；Valve tune
Saving mechanism (7), there is valve adjustments mechanism input terminal (7a), valve adjustments mechanism output end (7b) and valve regulating mechanism to adjust
It holds (7c)；Axial moving mechanism (5) adjusts the axial position of cam shaft sleeve (4), determines driving valve adjustments mechanism input terminal
The cam of (7a) is the first cam (401) either the second cam (402)；Valve control machanism (6) is directly or by driver
Structure adjusts the position of valve adjustments mechanism adjustable side (7c), and valve adjustments mechanism output end (7b) drives directly or by transmission mechanism
It takes offence door drive mechanism (2).
2. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, it is characterized in that:
Increase third cam (403) on cam shaft sleeve (4), third cam (403) uses single-tab cam lobes or biconvex
Cam lobes；Axial moving mechanism (5) adjusts the axial position of cam shaft sleeve (4), and decision is driven directly or by transmission mechanism
A cam for regulating mechanism input terminal (7a) of taking offence is the first cam (401), the second cam (402) or third cam
(403).
3. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, it is characterized in that:
Increase a valve actuating mechanism (2), i.e. left side valve actuating mechanism (201) and right side valve actuating mechanism (202), increases gas
Door drive axle (8)；Valve adjustments mechanism output end (7b) drives valve actuation bridge (8) directly or by transmission mechanism, and valve drives
Dynamic bridge (8) drive left side valve actuating mechanism (201) and right side valve actuating mechanism (202) directly or by transmission mechanism.
4. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, it is characterized in that:
Increase a valve actuating mechanism (2), a valve control machanism (6) and a valve adjustments mechanism (7), that is, uses left side gas
Door control mechanism (601), left side valve adjustments mechanism (701), right side valve control machanism (602), right side valve adjustments mechanism
(702), left side valve actuating mechanism (201) and right side valve actuating mechanism (202) increase valve actuation bridge (8)；Cam is direct
Or valve actuation bridge (8) are driven by transmission mechanism, valve actuation bridge (8) drives left side valve tune directly or by transmission mechanism
Save mechanism input terminal (701a) and right side valve adjustments mechanism input terminal (702a), left side valve control machanism (601) it is direct or
The position of left side valve adjustments mechanism adjustable side (701c) is adjusted by transmission mechanism, right side valve control machanism (602) is direct
Or the position of right side valve adjustments mechanism adjustable side (702c), left side valve adjustments mechanism output end are adjusted by transmission mechanism
(701b) drives left side valve actuating mechanism (201), right side valve adjustments mechanism output end directly or by transmission mechanism
(702b) drives right side valve actuating mechanism (202) directly or by transmission mechanism.
5. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, it is characterized in that:
Two cams are switched, there are two switching slot for setting on the cam shaft sleeve (4)；The axial moving mechanism (5) uses
Two electromagnetic actuators；Or the axial moving mechanism (5) uses two hydraulic actuating mechanisms and two hydraulic control machines
Structure.
6. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, it is characterized in that:
Three cams are switched, there are two switching slot for setting on the cam shaft sleeve (4)；The axial moving mechanism (5) uses
Three electromagnetic actuators；Or the axial moving mechanism (5) uses three hydraulic actuating mechanisms and three hydraulic control machines
Structure.
7. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, it is characterized in that:
The valve adjustments mechanism (7) uses four-bar mechanism；The valve control machanism (6) uses mechanical, electro-hydraulic, electromagnetic mechanism conduct
Its driving part, using hydraulic unit, adjustable track, adjusting rod or four-bar mechanism as its execution unit.
8. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, it is characterized in that:
The transmission mechanism is sliding block, push rod, rocker arm, swing arm, four-bar mechanism or Hydraulic Main from piston type mechanism.
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| CN108071444B (en) * | 2017-11-29 | 2020-04-14 | 大连理工大学 | Variable-mode continuously variable valve mechanism |
| CN108301892A (en) * | 2018-01-05 | 2018-07-20 | 陕西科技大学 | The variable inlet and exhaust valve system and control method of internal combustion engine |
| CN109653830B (en) * | 2018-12-20 | 2020-03-10 | 潍柴动力股份有限公司 | Variable system of valve lift and engine |
Citations (4)
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|---|---|---|---|---|
| CN101175902A (en) * | 2005-05-11 | 2008-05-07 | 丰田自动车株式会社 | Variable valve-operating device |
| CN203925645U (en) * | 2013-01-04 | 2014-11-05 | 福特环球技术公司 | Salient angle exchange cam axle system driver |
| CN104454178A (en) * | 2014-11-06 | 2015-03-25 | 上海尤顺汽车部件有限公司 | Engine braking method |
| WO2015052924A1 (en) * | 2013-10-10 | 2015-04-16 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175902A (en) * | 2005-05-11 | 2008-05-07 | 丰田自动车株式会社 | Variable valve-operating device |
| CN203925645U (en) * | 2013-01-04 | 2014-11-05 | 福特环球技术公司 | Salient angle exchange cam axle system driver |
| WO2015052924A1 (en) * | 2013-10-10 | 2015-04-16 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
| CN104454178A (en) * | 2014-11-06 | 2015-03-25 | 上海尤顺汽车部件有限公司 | Engine braking method |
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