CN106545381A - 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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- CN106545381A CN106545381A CN201611144600.0A CN201611144600A CN106545381A CN 106545381 A CN106545381 A CN 106545381A CN 201611144600 A CN201611144600 A CN 201611144600A CN 106545381 A CN106545381 A CN 106545381A
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- drive
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/06—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
-
- 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 the first cam and the second cam in cam shaft sleeve, by using axial moving mechanism, realize the conversion between the various modes such as electromotor two-stroke drive pattern, four stroke drive patterns, two-stroke braking mode, four stroke braking modes, further by using cooperatively with valve control machanism, optimal ventilation of the electromotor under different operating modes is finally realized, the comprehensive purpose for improving engine power performance, fuel economy, emission performance and braking safety is reached.The present invention is proposed towards practical application, and reliability is high, compact conformation, reduces requirement of the system to each mechanism, and using more mature technology, practical potentiality are high in a short time for system, have a good application prospect for each mechanism.
Description
Technical field
The present invention relates to a kind of axial displacement multi-mode four-bar Variabale valve actuation system, belongs to engine valve drive
Dynamic field.
Background technology
It is increasingly serious with the energy and environmental problem, and people are to the driving of vehicle and being absorbed in for safety, not
Carrying out electromotor needs, on the premise of discharge index is met, to consider dynamic property, economy, emission performance and safety.This is just
Need driving and braking in the range of full working scope, optimize engine performance.And receive much concern at present changeable air valve, stroke changeable
The technologies such as number, cylinder deactivation, auxiliary braking, new combustion mode, variable compression ratio, variable EGR are only transported in electromotor 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 electromotor
Start building under condition, and be 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 for driving under operating mode.The existing vehicle with cylinder stopping technique can only provide cylinder deactivation function, therefore,
It is low to consumption improvement degree, 7% or so oil consumption reduction can only be obtained mostly.On the other hand, with electromotor recoverable amount
Sharply increase, vehicle safety is increasingly subject to people's attention, auxiliary braking system is classified as vehicle by increasing country
One of indispensable adnexa.But at present there is brake component and work long hours easily overheated, braking effect in auxiliary braking system mostly
Rate is quickly reduced, retardation efficiency controllable degree is low, braking when the easy sideslip of vehicle, brakes take limited vehicle space etc.
Problem.In current electromotor auxiliary braking technology, preferably, it is in import/exhaust to the braking effect of the auxiliary braking technology that reduces pressure
On the basis of door ruuning situation is constant, near to open exhaust valve or air relief valve compared with small guide vane realizing subtracting
Pressure braking effect, electromotor realize a braking cycle per 720 ° of crank angles, belong to the braking of four strokes, and its braking effect cannot
Meet requirement when vehicle heavy load is braked.
For the problem in above-mentioned engine research field, Internal Combustion Engine institute burning seminar of Dalian University of Technology based on
The thought of partition zone optimizing engine performance in the range of full working scope is driven-braked, a kind of multimode engine is proposed, and is provided each
The application operating mode of the pattern of kind and the requirement to the valve keying moment：Under the driving operating mode of the big load of low speed, using two-stroke
Drive pattern, to reach the purpose for improving power output；Under other engine driving operating modes, using four stroke drive patterns,
To reduce the purpose of fuel consumption and emission formation；Under heavy load damped condition, using two-stroke braking mode, with
Reach the purpose for improving braking power output；Under little load brake operating mode, using four stroke braking modes, according to deceleration loading
Requirement, change braking mode number of stroke come adjust braking output, with reach improve vehicle safety purpose.
At present, practical Variabale valve actuation system remains valve cam mostly, mostly using mechanical structure,
It is broadly divided into：1) camshaft phase modulation formula, the VVT systems of such as TOYOTA, Vanos systems of BMW etc.；2) changeable air valve liter stage by stage
VTEC systems of formula, such as Honda etc.；3) the Valvetronic systems of continuously variable valve lift formula, such as BMW, Hyundai
CVVL systems etc., this kind of system realizes keying timing and the maximum of each cylinder valve of electromotor by controlling intermediate transmission mechanism
The synchronous adjustment of stroke three.
For relatively having cam Variabale valve actuation system, more flexible valve event is capable of achieving without camming, while
Complex structure, cost intensive, and need more to be deepened at aspects such as reliability, ruggedness and valve temperature compensation controls
The research for entering.This kind of system mainly includes two class of electromagnetic type and electric-liquid type.Electromagnetic type system is in motion precise control, valve stroke
The aspects such as adjustable degree are remained to be further improved.For electromagnetic type system, electric-liquid type system can with relatively higher valve
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 two big class of common rail oil feeding type and cam oil feeding type.
Common rail oil feeding type system eliminates valve cam, by driving oil in the open/close states and accumulator of control electromagnetic valve
Pressure, adjust valve keying timing and range.Ford companies, Lucas companies etc. carried out research to this, and future is still
In-depth study need to be carried out at system cost, response speed, the aspect such as take up room.With engine cylinder number, single cylinder valve number
And the increase of rotating speed, the system is also present：A) common rail pipe is bulky, difficulty in arrangement problem；B) made in system
The quantity of high-speed large-flow electromagnetic valve is excessive, and the electromagnetic valve cost determined by current electromagnetic valve material and processing technique
It is higher, therefore, the holistic cost of the system is higher.These problems cause traditional common rail oil feeding type system automobile-usedization and are more stranded
Difficulty, this kind of system are widely used on the exhaust valve of low powered two stroke engine.
By comprehensive mechanical formula and the advantage of common rail oil feeding type system, cam oil feeding type system receives research worker and life
Produce the extensive concern of manufacturer, the Multiair systems of such as FIAT, VCM systems of ABB etc..This kind of system adopts cam-plunger type
Oil feeder takes up room little replacing accumulator, is capable of achieving the independent regulation of the keying timing of valve, opens and closes timing and determine row
Journey.This kind of system remains a need for being improved at following two aspects：A) quantity of oil feeder needed for system and electromagnetic valve is more, is
System holistic cost is higher；B) valve operation adjustable extent is limited by fuel feeding and control device, it is impossible to realize that valve is just opened and closed
When and stroke three between independent regulation, do not realize electromotor two-stroke drive pattern and two-stroke braking mode requirement yet
The valve running of 360 °C of A/ circulation etc..
As existing practical Variabale valve actuation system is mostly used for the electromotor of four stroke drive patterns, it is impossible to full
The requirement of sufficient multimode engine, therefore develop a set of reliability height and meet the variable valve actuation of multimode engine requirement
System is imperative.The braking of electromotor two-stroke drive pattern, four stroke drive patterns, two-stroke braking mode and four strokes
Under pattern, be present greatly difference in import/exhaust door open frequency, unlatching timing and unlatching duration, which greatly increases
The development difficulty of the Variabale valve actuation system that multimode engine is required.Such as due to two-stroke drive pattern or two-stroke system
Dynamic model formula requires that import/exhaust door is run once per 360 ° of crank angles, and four stroke drive patterns and four stroke braking modes are required
Import/exhaust door is run once per 720 ° of crank angles, therefore, this requirement needs to realize two-stroke driving/braking pattern and four punchings
The multi-mode Variabale valve actuation system switched between journey driving/braking pattern must have realizes both valve running frequencies
Between flexible switching function.Even under the constant driving of number of stroke and braking mode, import/exhaust door is opened timing and is opened
Opening the duration yet suffers from very big difference.If adopting an actuated by cams, by using mechanical continuous variable valve
Come, if realizing the little unlatching duration, valve maximum lift is accordingly reduced, charging efficiency and pumping loss etc. refer to controlling organization
Mark is more difficult while meeting.If using hydraulic valve controlling organization by draining come if realizing the little unlatching duration, at a high speed
Lower hydraulic valve controlling organization will appear as well the problem that system cannot be fully oil-filled, and this will cause the system apply at a high speed
On electromotor.When switching between various patterns, the phase adjusted of very wide-angle, vane type vvt mechanism common at present are needed
Requirement cannot be met, and the electronic vvt mechanism cost intensive of requirement can be met, short-term cannot be popularized on a large scale, accordingly, it would be desirable to
The requirement of the range of accommodation to valve opening timing is reduced as far as possible, to realize without VVT or using conventional minor adjustment model
The purpose of the VVT for enclosing.Even under same pattern, it is different that working conditions of different engines remains that valve-driving system is provided
The unlatching timing of import/exhaust door, maximum lift and open the duration.At the same time, various parts should be adopted as far as possible
More mature technology, finally obtains good application prospect to improve system probability practical in a short time.At present not yet
There is a Variabale valve actuation system can be while meet requirements above, therefore the exploitation of multi-mode Variabale valve actuation system is compeled
In the eyebrows and eyelashes.
The content 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：(a) realized by using axial moving mechanism electromotor two-stroke drive pattern, four stroke drive patterns, two
Conversion between the various modes such as stroke braking mode, four stroke braking modes, meets electromotor in different modes to ventilation
Requirement；B () in each mode, further optimizes different operating points under each pattern by using valve control machanism
Generator operating conditions, reach the aspects such as comprehensive raising engine power performance, fuel economy, emission performance and braking safety
The purpose of energy；C () is arranged in pairs or groups four-bar valve control machanism to meet practical application to changeable air valve degree of flexibility, cost, system
The requirement of the aspects such as arrangement, each mechanism adopt more mature technology as far as possible, the probability practical in a short time to improve system,
Finally to obtain good application prospect.
The technical solution adopted in the present invention is：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 the first cam of setting and the second cam.First cam adopts single-tab cam lobes or biconvex
Cam lobes, the second cam adopt single-tab cam lobes or biconvex cam lobes, biconvex cam lobes to adopt molded line
Two of identical and 180 ° of camshaft degrees of phase are raised.Valve adjustments mechanism have valve adjustments mechanism input,
Valve adjustments mechanism outfan and valve governor motion adjustable side.The axial location of axial moving mechanism adjustment cam axle axle sleeve,
The cam for determining to drive valve governor motion input is the first cam or the second cam.Valve control machanism is direct or logical
The position that drive mechanism adjusts valve adjustments mechanism adjustable side is crossed, valve adjustments mechanism outfan is driven directly or by drive mechanism
Take offence door drive mechanism.
It increases by the 3rd cam on cam shaft covers, and the 3rd cam adopts single-tab cam lobes or biconvex cam
Blade.The axial location of axial moving mechanism adjustment cam axle axle sleeve, determines to drive valve adjustments directly or by drive mechanism
The cam of mechanism's input is the first cam, the second cam, or the 3rd cam.
It increases a valve actuating mechanism, i.e. left side valve actuating mechanism and right side valve actuating mechanism, increases valve
Drive axle.Valve adjustments mechanism outfan first finally distinguishes direct or logical by valve actuation bridge again directly or by drive mechanism
Cross drive mechanism and drive left side valve actuating mechanism and right side valve actuating mechanism.
It increases valve actuating mechanism, a valve control machanism and a valve adjustments mechanism, i.e., using 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 again directly or by drive mechanism
Bridge is last to drive left side valve adjustments mechanism's input and the input of right side valve adjustments mechanism directly or by drive 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 drive mechanism
Gate control mechanism adjusts the position of right side valve adjustments mechanism adjustable side, left side valve adjustments mechanism directly or by drive mechanism
Outfan directly or by drive mechanism drive left side valve actuating mechanism, right side valve adjustments mechanism outfan directly or by
Drive mechanism drives right side valve actuating mechanism.
For two cam switchings, the cam shaft puts and is provided with two switching slot.The axial moving mechanism is adopted
With two electromagnetic actuators.Or the axial moving mechanism adopts two hydraulic actuating mechanisms and two hydraulic control machines
Structure.
For three cam switchings, the cam shaft puts and is provided with two switching slot.The axial moving mechanism is adopted
With three electromagnetic actuators.Or the axial moving mechanism adopts three hydraulic actuating mechanisms and three hydraulic control machines
Structure.
The valve adjustments mechanism adopts four-bar mechanism.The valve control machanism adopts mechanical, electro-hydraulic, electromagnetism, motor,
Or electric mechanism is held as which using hydraulic unit, adjustable track, adjusting rod, or four-bar mechanism as its driver part
Row part.
The drive mechanism is slide block, push rod, rocking arm, swing arm, four-bar mechanism, or Hydraulic Main is from piston type mechanism.
The invention has the beneficial effects as follows：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., cam shaft sleeve is at least convex including first
Wheel and the second cam, by using axial moving mechanism, realize electromotor two-stroke drive pattern, four stroke drive patterns,
Conversion between the various modes such as two-stroke braking mode, four stroke braking modes, so as to meet electromotor in different mode
Under to take a breath requirement；B () in each mode, by using valve control machanism, is realized to the difference under each pattern
The further optimization of the generator operating conditions of operating point, finally improves engine power performance, fuel economy, discharge comprehensively
Property and braking safety；C () present invention can provide the user four-bar valve adjustments mechanism, with preferable according to actual type
Changeable air valve degree of flexibility and good reliability, on the basis of high performance-price ratio, meet the various operating conditions of electromotor
Under requirement to import/exhaust door ruuning situation；D, by appropriate design, reliability is high, compact conformation, and it is right to reduce for () present invention
The requirement of various parts, each mechanism is as far as possible using more mature technology, the probability practical in a short time to improve system
Finally to obtain good application prospect.
Description of the drawings
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
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 for adjusting 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 schematic diagram of example of four-bar Variabale valve actuation system.
Fig. 6 is that the axial displacement of the dull section of the operation of the electromagnetic type biconvex wheel drive list valve with single camshaft axle sleeve is more
The schematic diagram of pattern four-bar Variabale valve actuation system.
Fig. 7 is that the axial displacement of the dull section of the operation of the three actuated by cams list valve of electromagnetic type with single camshaft axle sleeve is more
The schematic diagram of pattern four-bar Variabale valve actuation system.
Fig. 8 is that the axial displacement of the dull section of the operation of the fluid pressure type biconvex wheel drive list valve with single camshaft axle sleeve is more
The schematic diagram of pattern four-bar Variabale valve actuation system.
Fig. 9 is the axial displacement of the dull section of the operation of the fluid pressure type biconvex wheel drive list valve with two cam shaft sleeves
The schematic diagram of multi-mode four-bar Variabale valve actuation system.
Figure 10 is inlet valve cam schematic diagram under four stroke drive patterns.
Figure 11 is exhaust valve cam schematic diagram under four stroke drive patterns.
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 pattern.
Figure 15 is exhaust valve cam schematic diagram under two-stroke drive pattern.
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：1st, cylinder cap；2nd, valve actuating mechanism；201st, the first valve actuating mechanism；202nd, duaspiracle drive mechanism；
2A, left side valve actuating mechanism；2B, right side valve actuating mechanism；2-1, a valve actuating mechanism；2-2, No. two valve actuations
Mechanism；3rd, camshaft；3-1, a camshaft；3-2, No. two camshafts；4th, cam shaft sleeve；401st, the first cam；402nd,
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
The 403, the 3rd cam of wheel；404th, the first switching slot；405th, the second switching slot；4-1, a cam shaft sleeve；401-1, No. one
One cam；402-1, second cam；404-1, first switching slot；405-1, second switching slot；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；5th, axial moving mechanism；501st, the first electromagnetic actuator；501b, the switching of the first electromagnetic actuator
Pin；502nd, the second electromagnetic actuator；502b, the second electromagnetic actuator switching pin；503rd, the 3rd electromagnetic actuator；
503b, the 3rd electromagnetic actuator switching pin；511st, 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 back-moving spring；512nd, the second hydraulic pressure performs machine
Structure；512a, the second hydraulic actuating mechanism drive mouth；512b, the second hydraulic actuating mechanism switching pin；512k, the second hydraulic pressure are performed
Reset spring；521st, the first hydraulic control；521a, the first hydraulic control drive mouth；521p, the first hydraulic pressure control
Mechanism's high-pressure mouth processed；521t, the first hydraulic control low pressure port；522nd, the second hydraulic control；522a, the second hydraulic pressure control
Mechanism processed drives mouth；522p, the second hydraulic control high-pressure mouth；522t, the second hydraulic control low pressure port；53rd, low pressure
Source；54th, high-voltage power supply；511-1, first hydraulic actuating mechanism；511a-1, first hydraulic actuating mechanism drive mouth；
511b-1, a first hydraulic actuating mechanism switching pin；511k-1, a first hydraulic actuating mechanism back-moving spring；512-1、
Number second hydraulic actuating mechanism；512a-1, second hydraulic actuating mechanism drive mouth；512b-1, second hydraulic pressure are held
Row mechanism switching pin；512k-1, a second hydraulic actuating mechanism back-moving 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 back-moving spring；512-2, No. two second hydraulic actuating mechanisms；512a-2, No. two second hydraulic pressure are performed
Mechanism drives mouth；512b-2, No. two second hydraulic actuating mechanism switching pins；512k-2, No. two second hydraulic actuating mechanisms reset
Spring；55th, the first common rail chamber；56th, the second common rail chamber；6th, valve control machanism；601st, the first valve control machanism；602nd, second
Valve control machanism；6-1, a 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 pin joint of adjusting rod；6DB, the second pin joint of adjusting rod；7th, gas
Door governor motion；7a, valve adjustments mechanism input；7b, valve adjustments mechanism outfan；7c, valve adjustments mechanism adjustable side；
701st, the first valve adjustments mechanism；701a, the first valve adjustments mechanism input；701b, the first valve adjustments mechanism outfan；
701c, the first valve adjustments mechanism adjustable side；702nd, duaspiracle governor motion；702a, duaspiracle governor motion input；
702b, duaspiracle governor motion outfan；702c, duaspiracle governor motion adjustable side；7-1, a valve adjustments mechanism；
7a-1, a valve adjustments mechanism input；7b-1, a valve adjustments mechanism outfan；7c-1, a valve adjustments mechanism
Adjustable side；7-2, No. two valve adjustments mechanisms；7a-2, No. two valve adjustments mechanism inputs；7b-2, No. two valve adjustments mechanisms
Outfan；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 outfan；7Ac, left side valve adjustments mechanism adjustable side；7B, right side valve adjustments machine
Structure；7Ba, right side valve adjustments mechanism input；7Bb, right side valve adjustments mechanism outfan；7Bc, right side valve adjustments mechanism
Adjustable side；7K；Back-moving spring；7G1, the first bar；7G2, the second bar；7G3, the 3rd bar；The pole of 7Z1, the first bar；7DA, first
Pin joint；7DB, the second pin joint；7DC, the 3rd pin joint；8th, valve actuation bridge.
Specific embodiment
The present invention relates to a kind of axial displacement multi-mode four-bar Variabale valve actuation system.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 the dull section of single valve operation.Cam shaft
On set 4, the first cam 401 and the second cam 402 are set.First cam 401 adopts single-tab cam lobes or biconvex cam
Blade, the second cam 402 adopt single-tab cam lobes or biconvex cam lobes, biconvex cam lobes to adopt molded line phase
Two of same and 180 ° of camshaft degrees of phase are raised.Valve adjustments mechanism 7 with valve adjustments mechanism input 7a,
Valve adjustments mechanism outfan 7b and valve governor motion adjustable side 7c.The axial direction of 5 adjustment cam axle axle sleeve 4 of axial moving mechanism
Position, the cam for determining to drive valve governor motion input 7a is the first cam 401 or the second cam 402.Valve control
Mechanism processed 6 adjusts the position of valve adjustments mechanism adjustable side 7c, valve adjustments mechanism outfan 7b directly or by drive mechanism
Valve actuating mechanism 2 is driven directly or by drive mechanism.The drive mechanism is slide block, push rod, rocking arm, swing arm, four bar machines
Structure, or Hydraulic Main is 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 outfan 7b first passes through valve actuation bridge 8 again directly or by drive mechanism
Finally left side valve actuating mechanism 201 and right side valve actuating mechanism 202 are driven directly or by drive mechanism respectively.Realize
The synchronous adjustment of the first valve actuating mechanism 201 and duaspiracle drive mechanism 202.
Fig. 3 is the double axial displacement multi-mode four-bar variable valve actuation systems for adjusting of biconvex wheel drive dual valve operation
The schematic diagram of system.It increases by 2, valve control machanism 6 of a valve actuating mechanism and a valve adjustments mechanism 7, that is, adopt
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
Cross drive mechanism the input of left side valve adjustments mechanism is driven directly or by drive mechanism respectively by valve actuation bridge 8 is last again
End 701a and right side valve adjustments mechanism input 702a, left side valve control machanism 601 are adjusted directly or by drive mechanism
The position of left side valve adjustments mechanism adjustable side 701c, right side valve control machanism 602 adjust right directly or by drive mechanism
The position of side valve adjustments mechanism adjustable side 702c, left side valve adjustments mechanism outfan 701b are driven directly or by drive mechanism
Dynamic left side valve actuating mechanism 201, right side valve adjustments mechanism outfan 702b drive right side gas directly or by drive mechanism
Door drive mechanism 202.Realize the independent regulation of the first valve actuating mechanism 201 and duaspiracle drive 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 by the 3rd cam 403 in cam shaft sleeve 4, the 3rd cam 403 adopt single-tab cam lobes or
Biconvex cam lobes.The axial location of 5 adjustment cam axle axle sleeve 4 of axial moving mechanism, determines directly or by drive mechanism
The cam for driving valve governor motion input 7a is the first cam 401, the second cam 402, or the 3rd cam 403.Arrange
The situation of more cams is similar, is not repeated.
The valve adjustments mechanism 7 adopts four-bar mechanism.Valve adjustments mechanism 7 can include the first bar 7G1, the second bar
7G2, the 3rd bar 7G3.Four-bar mechanism back-moving spring 7K is may also include according to actual needs.Valve adjustments mechanism input 7a can set
Put on the pole of a bar in the first bar 7G1 or the 3rd bar 7G3 or this two bar, valve adjustments mechanism outfan 7b sets
Put on the pole of a bar on a bar in other two bar or in other two bar, valve control machanism 6 passes through
Adjust valve adjustments mechanism adjustable side 7c position come adjust the relative position between certain pin joint of each bar and cylinder cap 1 and/
Or the distance of two pin joints of certain bar.The bar that the distance of two pin joints of certain bar is referred to as certain bar is long.This kind of four-bar mechanism
Various connected modes can be adopted.Valve tune is hinged or is used as the first bar 7G1 is fixed with cylinder cap 1 by the first pin joint 7DA
Section mechanism input 7a directs or through slide block or passes through push rod or pass through rocking arm or pass through swing arm or pass through four
Linkage is contacted with cam, and the first bar 7G1 is hinged with the second bar 7G2 by the second pin joint 7DB, and the second bar 7G2 is by the
Three pin joint 7DC and the 3rd bar 7G3 are hinged between another pin joint and cylinder cap 1 that valve control machanism 6 adjusts the 3rd bar 7G3
Position and/or the 3rd bar 7G3 bar it is long.For another example the first bar 7G1 fixed by the first pin joint 7DA and cylinder cap 1 be hinged or
Slide block is directed or through or by push rod or by rocking arm or by swing arm as valve adjustments mechanism input 7a
Or contacted with cam by four-bar mechanism, the second bar 7G2 is hinged by the 3rd pin joint 7DC and the 3rd bar 7G3, the 3rd bar
7G3 is fixed with cylinder cap 1 by the 4th pin joint and is hinged, and valve control machanism 6 adjusts the bar of the first bar 7G1 and/or the second bar 7G2
It is long.It is hinged with the second bar 7G2 by the second pin joint 7DB such as the first bar 7G1, the second bar 7G2 is by the 3rd pin joint 7DC and the
Three bar 7G3 are hinged, and the first bar 7G1 and the 3rd bar 7G3 are contacted with valve control machanism 6 respectively, and valve control machanism 6 adjusts the
Position between the bar length of bar length and/or the 3rd bar 7G3 and/or another pin joint and cylinder cap 1 of the first bar 7G1 of one bar 7G1
Put and/or the position between another pin joint and cylinder cap 1 of the 3rd bar 7G3.Additionally, valve adjustments mechanism 7 can also include
First bar 7G1, the second bar 7G2 and slide block.Valve adjustments mechanism input 7a may be provided at the first bar 7G1 or slide block or this
On the pole of in two parts, valve adjustments mechanism outfan 7b is arranged on in other two part part or which
On the pole of the part remaininged in two parts, valve control machanism 6 by adjust valve adjustments mechanism adjustable side 7c position come
Adjust track of bar length and/or slide block of relative position and/or some bars between each part etc..This kind of four-bar mechanism can be adopted
Various connected modes.Such as the first bar 7G1 is hinged with the fixation of cylinder cap 1 or valve adjustments mechanism input 7a directs or through cunning
Block is contacted by push rod or by rocking arm or by swing arm or by four-bar mechanism with cam, the second bar 7G2
It is hinged with slide block, slide block is moved along trapped orbit, valve control machanism 6 adjusts the bar of the first bar 7G1 and/or the second bar 7G2
It is long.As the first bar 7G1 and the second bar 7G2 is hinged, the second bar 7G2 is hinged with slide block, and slide block is moved along trapped orbit, valve control
The bar that mechanism processed 6 adjusts the bar length and/or the second bar 7G2 of the first bar 7G1 is long.As the first bar 7G1 and cylinder cap 1 fix be hinged or
Valve adjustments mechanism input 7a direct or through slide block or by push rod or by rocking arm or by swing arm or
Contacted with cam by four-bar mechanism, the first bar 7G1 is hinged with the second bar 7G2, slide block is moved along trapped orbit, valve control
Mechanism processed 6 adjusts the bar length of the second bar 7G2 and/or the position between another pin joint and slide block of the second bar 7G2.Such as first
Bar 7G1 and cylinder cap 1 fix be hinged or valve adjustments mechanism input 7a direct or through slide block or by push rod or
Contact by rocking arm or by swing arm or by four-bar mechanism with cam, the first bar 7G1 is hinged with the second bar 7G2, the
Two bar 7G2 are hinged with slide block, and slide block is moved along track, position and direction of 6 adjustable track of valve control machanism etc..Fig. 5 is
A kind of schematic diagram of the example of four-bar Variabale valve actuation system.First bar 7G1 is solid with cylinder cap 1 by the first pin joint 7DA
Surely it is hinged.First bar 7G1 is hinged with the second bar 7G2 by the second pin joint 7DB.Second bar 7G2 by the 3rd pin joint 7DC with
3rd bar 7G3 is hinged.Cam is contacted with another fulcrum of the 3rd bar 7G3 by slide block, i.e. push rod, and contact point is used as valve
Governor motion input 7a.Valve adjustments mechanism outfan 7b is arranged on the pole 7Z1 of the first bar 7G1, valve adjustments mechanism
Adjustable side 7c is arranged on the pole of the 3rd bar 7G3.Back-moving spring 7K is arranged on the 3rd bar 7G3.
Valve control machanism 6 can adopt various ways.Valve control machanism 6 using mechanical, electro-hydraulic, electromagnetism, motor or
Electric mechanism 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 electrically etc. mechanism as control unit and adjustable track, gas
Door governor motion adjustable side 7c is contacted with the outfan and adjustable track of controlling organization simultaneously, and valve control machanism 6 adjusts control
The output of the outfan of mechanism processed, so as to realize that valve adjustments mechanism adjustable side 7c is promoted by the outfan of controlling organization, edge
Adjustable track operation.Valve control machanism 6 may also include mechanical, electro-hydraulic, electromagnetism, motor or electrically etc. mechanism as control
Part and adjusting rod 6G, adjusting rod 6G are fixed with cylinder cap 1 by adjusting rod the first pin joint 6DA and are hinged, and valve adjustments mechanism adjusts
Section end 7c is arranged on adjusting rod 6G or its pole, and controlling organization adjusts adjusting rod 6G around adjusting rod the first pin joint 6DA
Rotate, so as 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 is fixed with cylinder cap 1 and is hinged, and adjusting rod 6G fixes hinge by the pole of adjusting rod the second pin joint 6DB and the 3rd bar 7G3
Connect, the second pin joint of adjusting rod 6DB is valve adjustments mechanism adjustable side 7c.The rotation of adjusting rod 6G is changed by controlling organization
Angle, realizes the regulation of valve adjustments mechanism adjustable side 7c positions.Valve control machanism 6 may also include mechanical, electro-hydraulic, electromagnetism,
Motor or the mechanism such as electrically are used as control unit and four-bar mechanism.As four-bar mechanism includes the first adjusting rod, the second adjusting rod
With the 3rd adjusting rod, the first adjusting rod and cylinder cap 1 fix and be hinged, and the first adjusting rod is hinged with the second adjusting rod, the second adjusting rod
It is hinged with the 3rd adjusting rod, the 3rd adjusting rod is fixed with cylinder cap 1 and is hinged, controlling organization adjusts the first adjusting rod or the 3rd regulation
A bar or other two adjusting rod in the anglec of rotation of bar, valve adjustments mechanism adjustable side 7c and other two adjusting rod
In the pole of a bar contact.As valve control machanism 6 can also include the first adjusting rod, the second adjusting rod and adjust sliding
Block, the first adjusting rod are fixed with cylinder cap 1 and are hinged, and 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 anglec of rotation of the first adjusting rod, valve adjustments mechanism adjustable side 7c and the second adjusting rod or
The pole of adjusting slider or one of which contacts.Or valve control machanism 6 controls to adjust the amount of movement of slide block, gas
Door governor motion adjustable side 7c is contacted with the pole of the first adjusting rod or the second adjusting rod or one of which.In reality
In the application of border, above-mentioned part needs to be deformed according to actual needs.As adjusting rod 6G can be replaced with eccentric.Adjustment cam
Can be replaced with the on-fixed fulcrum of push rod or lever or eccentric etc..
Fig. 6 is that the axial displacement of the dull section of the operation of the electromagnetic type biconvex wheel drive list valve with single camshaft axle sleeve is more
The schematic diagram of pattern four-bar Variabale valve actuation system.The first cam 401, the second cam are provided with cam shaft sleeve 4
402nd, 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
Actuator switching pin 502b.It is current to drive valve governor motion input 7a's to be the first cam 401, when the first electromagnetism is performed
Mechanism 501 is energized, and when the second electromagnetic actuator 502 is not energized, the first electromagnetic actuator switching pin 501b is descending simultaneously
Stretch in the first switching slot 404, promote cam shaft sleeve 4 be moved to the left, drive valve governor motion input 7a cam by
First cam 401 switches to the second cam 402.It is current to drive valve governor motion input 7a's to be the second cam 402, when the
One electromagnetic actuator 501 is not energized, when the second electromagnetic actuator 502 is energized, the second electromagnetic actuator switching pin
502b is descending and stretches in the second switching slot 405, promotes cam shaft sleeve 4 to move right.Drive valve governor motion input
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 perform machine
When structure 502 is not energized, cam shaft sleeve 4 is not moved axially.First switching slot 404 and the second switching slot 405 are complete
Separate.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 the axial displacement of the dull section of the operation of the three actuated by cams list valve of electromagnetic type with single camshaft axle sleeve is more
The schematic diagram of pattern four-bar Variabale valve actuation system.Increase by the 3rd cam 403 in cam shaft sleeve 4.Increase by the 3rd electromagnetism
Actuator 503.3rd electromagnetic actuator 503 has the 3rd 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 governor motion input 7a's is
Second cam 402, when the first electromagnetic actuator 501 is energized, the second electromagnetic actuator 502 and the 3rd electromagnetic actuator
503 not be energized when, the first electromagnetic actuator drive pin 501b is descending and stretches in the first switching slot 404, promote it is convex
Wheel shaft axle sleeve 4 is moved to the left, and drives valve governor motion input 7a to switch to the 3rd cam 403 by the second cam 402.Currently
Valve governor motion input 7a is driven to be the 3rd cam 403, when the first electromagnetic actuator 501 and the 3rd electromagnetic actuator
503 are not energized, when the second electromagnetic actuator 502 is energized, the second electromagnetic actuator drive pin 502b it is descending and
Stretch in the second switching slot 405, promote cam shaft sleeve 4 to move right, drive valve governor motion input 7a convex by the 3rd
Wheel 403 switches to the second cam 402.It is current to drive valve governor motion input 7a to be the second cam (402), when the 3rd electromagnetism
Actuator 503 is energized, and when the first electromagnetic actuator 501 and the second electromagnetic actuator 502 are not energized, the 3rd is electric
Magnetic actuator drive pin 503b is descending and stretches in the second switching slot 405, promotes cam shaft sleeve 4 to move right, drives
Valve adjustments mechanism input 7a switches to the first cam 401 by the second cam 402.It is current to drive valve governor motion input
7a is the first cam 401, when the first electromagnetic actuator 501 and the 3rd electromagnetic actuator 503 are not energized, the second electromagnetism
When actuator 502 is energized, the second electromagnetic actuator drive pin 502b is descending and stretches in the first switching slot 404, pushes away
Moving cam axle axle sleeve 4 is moved to the left, and drives valve governor motion input 7a to switch to the second cam by the first cam (401)
402.When first electromagnetic actuator 501, the second electromagnetic actuator 502 and the 3rd electromagnetic actuator 503 are not energized,
Cam shaft sleeve 4 is not moved axially.
Fig. 8 is that the axial displacement of the dull section of the operation of the fluid pressure type biconvex wheel drive list valve with single camshaft axle sleeve is more
The schematic diagram of pattern four-bar Variabale valve actuation system.Fluid pressure type axial moving mechanism include two sets of hydraulic actuating mechanisms, two
Set hydraulic control, high-voltage power supply 54 and low pressure source 53.Hydraulic actuating mechanism adopts reciprocating-piston mechanism, including the first hydraulic pressure
Actuator 511 and the second hydraulic actuating mechanism 512.First hydraulic actuating mechanism 511 includes that the first hydraulic actuating mechanism drives
Mouth 511a, the first hydraulic actuating mechanism drive pin 511b and the first hydraulic actuating mechanism back-moving spring 511k.Second hydraulic pressure is performed
Mechanism 512 includes that the second hydraulic actuating mechanism drives mouth 512a, the second hydraulic actuating mechanism drive pin 512b and the second hydraulic pressure to hold
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
Mouth 511a is driven to drive mouth 521a to be connected with the first hydraulic control.Second hydraulic actuating mechanism drives mouth 512a and the second liquid
Pressure controlling organization drives mouth 522a 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 energized, the first hydraulic control high-pressure mouth 521p is blocked
Plug, the first hydraulic control low pressure port 521t drive mouth 521a to be connected with the first hydraulic control.First hydraulic control machine
When structure 521 is energized, 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 energized, the second hydraulic control is high
Pressure mouth 512p is blocked, and the second hydraulic control low pressure port 522t drives mouth 522a to be connected with the second hydraulic control.The
When two hydraulic controls 522 are energized, the second hydraulic control low pressure port 522t is blocked, and the second hydraulic control is high
Pressure mouth 512p drives mouth 522a to be connected with the second hydraulic control.It is current to drive valve governor motion input 7a's to be first
Cam 401, and the first hydraulic control 521 is energized, when the second hydraulic control 522 is not energized, the first hydraulic pressure
Actuator drive pin 511b is descending and stretches in the first switching slot 404, promotes cam shaft sleeve 4 to be moved to the left, drive gas
Door governor motion input 7a switches to the second cam 402 by the first cam 401.It is current to drive valve governor motion input 7a
Be the second cam 402, the first hydraulic control 521 is not energized, when the second hydraulic control 522 is energized, second
Hydraulic actuating mechanism drive pin 512b is descending and stretches in the second switching slot 405, promotes cam shaft sleeve 4 to move right, drives
A governor motion input 7a that takes offence switches to the first cam 401 by the second cam 402.First hydraulic control 521 and
When two hydraulic controls 522 are not energized, cam shaft sleeve 4 is not moved axially.Fluid pressure type axial moving mechanism enters
When three cam of row switches, need to increase a hydraulic actuating mechanism and hydraulic control.It is not repeated herein.
Fig. 9 is the axial displacement of the dull section of the operation of the fluid pressure type biconvex wheel drive list valve with two cam shaft sleeves
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 sources 53.Hydraulic actuating mechanism includes a first hydraulic actuating mechanism 511-1
With a second hydraulic actuating mechanism 512-1, No. two first hydraulic actuating mechanism 511-2 and No. two second hydraulic actuating mechanisms
512-2.Number first hydraulic actuating mechanism 511-1 include first hydraulic actuating mechanism drive mouth 511a-1, No. one first
A hydraulic actuating mechanism drive pin 511b-1 and first hydraulic actuating mechanism back-moving spring 511k-1.Number second hydraulic pressure is performed
Mechanism 512-1 includes that second hydraulic actuating mechanism drives mouth 512a-1, a second hydraulic actuating mechanism drive pin 512b-
1 and a second hydraulic actuating mechanism back-moving 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
Back-moving spring 511k-2.No. two second hydraulic actuating mechanism 512-2 include No. two second hydraulic actuating mechanisms drive mouth 512a-2,
No. two second hydraulic actuating mechanism drive pin 512b-2 and No. two second hydraulic actuating mechanism back-moving 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.Number first hydraulic actuating mechanism drives mouth 511a-1 and No. two first liquid
Pressure actuator drives mouth 511a-2 to direct or through the first common rail chamber 55 and the first hydraulic control driving mouth 521a
It is connected.Number second hydraulic actuating mechanism drives mouth 512a-1 and No. two second hydraulic actuating mechanisms to drive mouth 512a-2 direct
Or drive mouth 522a to be connected by the second common rail chamber 56 and the second hydraulic control.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 energized, 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 energized, the first hydraulic control low pressure port 521t is blocked, and first
Hydraulic control high-pressure mouth 521p drives mouth 521a to be connected with the first hydraulic control.Second hydraulic control 522 is not
When energized, the second hydraulic control high-pressure mouth 512p is blocked, the second hydraulic control low pressure port 522t and the second liquid
Pressure controlling organization drives mouth 522a to be connected.When second hydraulic control 522 is energized, the second hydraulic control low pressure port
522t is blocked, and the second hydraulic control high-pressure mouth 512p drives mouth 522a to be connected with the second hydraulic control.Work as forerunner
That move a valve adjustments mechanism input 7a-1 is a first cam 401-1, drives No. two valve adjustments mechanism inputs
That 7a-2 is No. two first cam 401-2, and the first hydraulic control 521 is energized, and the second hydraulic control 522 is not
When energized, a first hydraulic actuating mechanism drive pin 511b-1 is descending and stretches in first switching slot 404-1, pushes away
Move cam shaft sleeve 4-1 to be moved to the left, drive the cam of a valve adjustments mechanism input 7a-1 first convex by No. one
Wheel 401-1 is switched to a second cam 402-1；Meanwhile, No. two first hydraulic actuating mechanism drive pin 511b-2 it is descending and
Stretch in No. two first switching slot 404-2, promote No. two cam shaft sleeves 4-2 to be moved to the left, drive No. two valve adjustments mechanisms
The cam of input 7a-2 is switched to No. two second cam 402-2 by No. two first cam 401-2.It is current to drive a valve to adjust
That section mechanism input 7a-1 is a second cam 402-1, drives No. two valve adjustments mechanism input 7a-2's to be No. two
Second cam 402-2, and the first hydraulic control 521 is not energized, when the second hydraulic control 522 is energized, one
Number the second hydraulic actuating mechanism drive pin 512b-1 is descending and stretches in second switching slot 405-1, promotes a cam
Axle axle sleeve 4-1 moves right, and drives the cam of a valve adjustments mechanism input 7a-1 to be switched by a second cam 402-1
To a first cam 401-1；Meanwhile, No. two second hydraulic actuating mechanism drive pin 512b-2 are descending and stretch into No. two second
In switching slot 405-2, promote No. two cam shaft sleeves 4-2 to move right, drive No. two valve adjustments mechanism input 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 hydraulic pressure
Controlling organization 521 and a set of second hydraulic control 522, and need first hydraulic pressure equal with cam shaft sleeve quantity 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 the first hydraulic pressure
Controlling organization 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 drives mouth 522a
It is connected.First hydraulic control 521 controls all of first hydraulic actuating mechanism 511 and runs simultaneously, and realizes all of cam
The synchronization of axle axle sleeve 4 is moved to the left；Second hydraulic control 522 controls 512 synchronous fortune of all of second hydraulic actuating mechanism
OK, realize that the synchronization of all of cam shaft sleeve 4 moves right, finally realize the first cam in all of cam shaft sleeve 4
401 and second switching between cam 402.
For the Variabale valve actuation system for multimode engine, electromotor has based on the actual application requirements
Which pattern is selecting the type of cam lobes.Figure 10 is inlet valve cam schematic diagram under four stroke drive patterns.Figure 11 is four
Exhaust valve cam schematic diagram under stroke drive pattern.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 pattern.Figure 15
It is exhaust valve cam schematic diagram under two-stroke drive pattern.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.Such as can be adopted with meeting the vehicle based on low-speed big power output
With four stroke drive patterns and two-stroke drive pattern, 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 patterns can be adopted to meet the vehicle based on the auxiliary braking safety of heavy-duty vehicle such as
With two-stroke braking mode, then, the cam of air inlet side selects the cam of Figure 10 and Figure 16, exhaust side to select Figure 11 and Figure 17.
Such as with meet the vehicle of the auxiliary braking safety of heavy-duty vehicle can also using four stroke drive patterns, four stroke braking modes and
Two-stroke braking mode, then, the cam of air inlet side may be selected three cams, i.e. Figure 10, Figure 12 and Figure 16, the cam of exhaust side
Three cams, i.e. Figure 11, Figure 13 and Figure 17 may be selected.Such as with while needing to meet low-speed big power output and meeting heavy duty
The vehicle of the auxiliary braking safety of vehicle adopts four stroke drive patterns, two-stroke drive pattern and two-stroke braking mode,
So, the cam of air inlet side may be selected three cams, i.e. Figure 10, Figure 14 and Figure 16, and the cam of exhaust side may be selected three cams,
That is Figure 11, Figure 15 and Figure 17.Due to number of stroke it is constant in the case of, import/exhaust door running frequency is constant, then, import/exhaust door
It is possible with a cam to drive, it is individually or convex in camshaft actuated end 4 with being arranged on by valve control machanism
Wheel shaft phase-regulating mechanism to be engaged and provide corresponding valve opening timing for concrete operating point and open the duration.Number of stroke
Constant situation, drive pattern and braking mode to the valve opening timing of import/exhaust door, open duration, valve and most rise higher
There is very big difference in the requirement of journey, the difference of valve opening timing is bigger, it is desirable to camshaft phase governor motion
Adjustable extent is bigger, once beyond conventional such as the range of accommodation of vane type vvt mechanism, the expensive electronic VVT of needs；Such as
Fruit adopts an actuated by cams, and the little unlatching duration is realized by using mechanical continuous variable valve control machanism
Words, valve maximum lift accordingly can be reduced, in fact it could happen that cannot meet different mode simultaneously to opening duration and maximum lift
Requirement, it is impossible to realize optimal ventilation.Under two-stroke drive pattern and two-stroke braking mode, or in four stroke drive patterns
Under four stroke braking modes, the unlatching timing of inlet valve and open the duration and be more or less the same, the unlatching timing of exhaust valve and open
Open duration difference larger.Therefore, the constant situation of number of stroke, is also needed to according to practical situation using one or two cams
To determine.
For the Variabale valve actuation system for single-mode electromotor, such as four stroke drive patterns, air inlet side
Cam select Figure 10.Under different operating modes, two to three different cams are selected.Adopt such as under low speed and load operating mode and have
The little cam for opening duration and little lift, using with big duration and the high-lift of opening under high speed high load capacity operating mode
Cam.For another example, under low speed same cylinder two inlet valve asynchronous operations, i.e., one inlet valve is with big valve stroke and unlatching
Duration is run, and another inlet valve is with little valve stroke and opens duration operation, can strengthen In Cylinder Flow, improve
The performance of electromotor, therefore, can pass through using the such as structure of Figure 18, left cam and right cam under the low speed have not
Same cam profile, or left side valve control machanism 6A and right side valve control machanism 6B using the methods such as different controlled quentity controlled variables come
Realize.
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, i.e., using left side valve actuating mechanism 2A and right side valve actuating mechanism
2B.Increase by first cam 401 and second cam 402, i.e., using left side the first cam 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 drive mechanism and drives left side valve actuating mechanism 2A, right side the first cam 401B to direct or through biography
Motivation structure drives 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 drive mechanism driving by drive 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), its feature
It is：It also 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) is adopted
Single-tab cam lobes or biconvex cam lobes, the second cam (402) is using single-tab cam lobes or biconvex blistering
Impeller blade, biconvex cam lobes adopt molded line identical and two of 180 ° of camshaft degrees of phase raised；Valve is adjusted
Section mechanism (7) is adjusted with valve adjustments mechanism input (7a), valve adjustments mechanism outfan (7b) and valve governor motion
End (7c)；The axial location of axial moving mechanism (5) adjustment cam axle axle sleeve (4), determines to drive valve governor motion input
(7a) cam is the first cam (401) or 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 outfan (7b) is driven directly or by drive mechanism
Take offence door drive mechanism (2).
2. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, is characterized in that：
Increase by the 3rd cam (403) in cam shaft sleeve (4), the 3rd cam (403) is using single-tab cam lobes or biconvex
Cam lobes；The axial location of axial moving mechanism (5) adjustment cam axle axle sleeve (4), determines to drive directly or by drive mechanism
A cam for governor motion input (7a) of taking offence is the first cam (401), the second cam (402), or the 3rd cam
(403)。
3. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, 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), increase gas
Door drive axle (8)；Valve adjustments mechanism outfan (7b) is first last by valve actuation bridge (8) again directly or by drive mechanism
Left side valve actuating mechanism (201) and right side valve actuating mechanism (202) are driven directly or by drive mechanism respectively.
4. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, is characterized in that：
Increase valve actuating mechanism (2), a valve control machanism (6) and a valve adjustments mechanism (7), i.e., using left side gas
Gate 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 first straight
Connect or left side valve adjustments are finally driven directly or by drive mechanism respectively by valve actuation bridge (8) again by drive mechanism
Mechanism's input (701a) and right side valve adjustments mechanism input (702a), left side valve control machanism (601) are direct or logical
Cross the position that drive mechanism adjusts left side valve adjustments mechanism adjustable side (701c), right side valve control machanism (602) directly or
The position on right side valve adjustments mechanism adjustable side (702c), left side valve adjustments mechanism outfan are adjusted by drive mechanism
(701b) left side valve actuating mechanism (201), right side valve adjustments mechanism outfan are driven directly or by drive mechanism
(702b) right side valve actuating mechanism (202) is driven directly or by drive mechanism.
5. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, is characterized in that：
For two cam switchings, on the cam shaft sleeve (4), two switching slot are provided with；The axial moving mechanism (5) adopts
Two electromagnetic actuators；Or the axial moving mechanism (5) is using 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, is characterized in that：
For three cam switchings, on the cam shaft sleeve (4), two switching slot are provided with；The axial moving mechanism (5) adopts
Three electromagnetic actuators；Or the axial moving mechanism (5) is using 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, is characterized in that：
The valve adjustments mechanism (7) adopts four-bar mechanism；The valve control machanism (6) using mechanical, electro-hydraulic, electromagnetism, motor, or
Person's electric mechanism is performed as which using hydraulic unit, adjustable track, adjusting rod, or four-bar mechanism as its driver part
Part.
8. a kind of axial displacement multi-mode four-bar Variabale valve actuation system according to claim 1, is characterized in that：
The drive mechanism is slide block, push rod, rocking arm, swing arm, four-bar mechanism, or Hydraulic Main is from piston type mechanism.
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| CN201611144600.0A CN106545381B (en) | 2016-12-13 | 2016-12-13 | A kind of axial displacement multi-mode four-bar Variabale valve actuation system |
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| CN106545381B CN106545381B (en) | 2019-04-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071444A (en) * | 2017-11-29 | 2018-05-25 | 大连理工大学 | A kind of change mode continuous variable valve actuator for air |
| 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 |
| CN109653830A (en) * | 2018-12-20 | 2019-04-19 | 潍柴动力股份有限公司 | A kind of variable valve lift system and engine |
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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)
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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 |
| WO2015052924A1 (en) * | 2013-10-10 | 2015-04-16 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
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| CN108071444A (en) * | 2017-11-29 | 2018-05-25 | 大连理工大学 | A kind of change mode continuous variable valve actuator for air |
| 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 |
| CN109653830A (en) * | 2018-12-20 | 2019-04-19 | 潍柴动力股份有限公司 | A kind of variable valve lift system and 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 |
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| CN106545381B (en) | 2019-04-09 |
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