CN106762011B - A kind of compact multimode formula Variabale valve actuation system - Google Patents
A kind of compact multimode formula Variabale valve actuation system Download PDFInfo
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- CN106762011B CN106762011B CN201611145941.XA CN201611145941A CN106762011B CN 106762011 B CN106762011 B CN 106762011B CN 201611145941 A CN201611145941 A CN 201611145941A CN 106762011 B CN106762011 B CN 106762011B
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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
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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
- 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 compact multimode formula Variabale valve actuation system, belongs to engine valve actuations field.It mainly includes camshaft, valve adjustments lever, valve control machanism, mode transmission mechanism, mode alternatives mechanism, pattern switching mechanism etc..By pattern switching mechanism, 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 is realized；In each mode, requirement of the different operating conditions to most preferably taking a breath of engine in this mode is further met respectively by being used cooperatively with valve control machanism and valve adjustments mechanism；It is finally reached the comprehensive purpose for improving engine power performance, fuel economy, emission performance and braking safety.The configuration of the present invention is simple is compact, arrangement is easy, practical application foreground is good.
Description
Technical field
The present invention relates to a kind of compact multimode formula Variabale valve actuation systems, belong to engine valve actuations 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 still in both at home and abroad
Conceptual phase, and be served only under driving operating condition.The existing vehicle with cylinder stopping technique can only provide cylinder deactivation, therefore, right
Consumption improvement degree is relatively low, can only obtain 5% or so oil consumption mostly and reduce.On the other hand, with the urgency of engine ownership
Increase severely and add, vehicle safety is increasingly valued by people, and auxiliary braking system is classified as vehicle by more and more countries must
One of standby attachment.However at present auxiliary braking system exist mostly brake component work long hours be easy overheat, braking efficiency
Quickly reduce, braking efficiency controllable degree is low, braking when vehicle is easy sideslip, braking system occupies limited vehicle space etc. and asks
Topic.In current engine auxiliary braking technology, the braking effect for depressurizing auxiliary braking technology is best, but it is in intake and exhaust
Door operating condition is constant, realizes that pressure m is imitated near to open exhaust valve or pressure reducing valve compared with small guide vane
Fruit, the every 720 ° of crank angles of engine realize a braking cycle, belong to the braking of four strokes, and braking effect is unable to satisfy vehicle
Requirement when heavy load is braked.
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, using mechanical structure, mainly
It is divided into: 1) camshaft phase modulation formula, such as VVT system, the Vanos system of BMW of TOYOTA；2) lift range variable 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 row of each cylinder valve of engine by control intermediate transmission mechanism
The synchronous adjustment of Cheng Sanzhe.
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, still needed to
System cost, response speed, occupied space etc. carry out in-depth study.With engine cylinder number single cylinder valve number and turn
The increase of speed, the system there is also: a) the problem of common rail pipe bulky difficulty in arrangement；B) high speed used in system
The quantity of big flow solenoid valve is excessive, and the solenoid valve higher cost determined by current solenoid valve material and processing technology, because
This, the overall cost of the system is higher.These problems cause traditional common rail oil feeding type system automobile-usedization more difficulty, this kind of system
System is 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 is supplied using cam post plug
Oily device 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 and 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 inlet and exhaust valve every 360 ° of crank angles operation primary, four stroke drive modes and four stroke braking modes require into
The every 720 ° of crank angles operation of exhaust valve is primary, it is therefore desirable to need to realize that two-stroke driving/braking mode and four strokes are driven
The spirit between both valve running frequencies may be implemented in the multi-mode Variabale valve actuation system switched between dynamic/braking mode
Switching living.Under same mode, working conditions of different engines requires valve-driving system to be capable of providing different import/exhaust door unlatchings
Timing, maximum lift and unlatching duration, it is therefore desirable to the valve-driving system of flexibility and changeability.There has been no a variable gas at present
Door drive system can meet requirements above simultaneously, therefore the exploitation of multi-mode Variabale valve actuation system is extremely urgent.
Summary of the invention
It is an object of the invention to: by designing a kind of compact multimode formula Variabale valve actuation system, for realizing:
(a) it is used cooperatively by pattern switching mechanism and camshaft phase regulating mechanism to realize engine two-stroke drive mode, four
Switching between the various modes such as stroke drive mode, two-stroke braking mode, four stroke braking modes, meets engine not
With under mode to the requirement of ventilation；(b) in each mode, pass through camshaft phase regulating mechanism valve corresponding with the mode
Control mechanism is used cooperatively to advanced optimize the generator operating conditions of different operating points under the mode, is finally reached synthesis and mentions
The purpose of high engine power, fuel economy, emission performance and braking safety etc. performance；(c) the different gas of collocation
Door control mechanism come meet practical application to changeable air valve degree of flexibility, cost, system arrangement etc. requirement；(d) to the greatest extent may be used
Energy ground reduces the requirement to mode transmission mechanism, mode alternatives mechanism, pattern switching mechanism, valve control machanism etc., each mechanism
More mature technology is used as far as possible, to improve a possibility that system is practical in a short time, finally obtains good application prospect.
The technical scheme adopted by the invention is that: a kind of compact multimode formula Variabale valve actuation system, it includes valve
Driving mechanism, camshaft phase regulating mechanism, camshaft, valve control machanism, valve adjustments lever, mode transmission mechanism, mould
Formula alternate mechanism, pattern switching mechanism.Wherein, valve actuating mechanism includes the first valve actuating mechanism.It is provided on camshaft
First cam and the second cam.First cam has a protrusion, and the second cam has a protrusion or two protrusions.Have
The protrusion of one the second raised cam and the molded line of protrusion of the first cam are identical, 180 ° of camshaft degrees of phase phase difference.Tool
It is identical as the molded line of protrusion of the first cam that there are two two raised molded line of the second cam of protrusion, and one of the second cam
The phase of protrusion of phase and the first cam of protrusion is identical, and another raised phase of the second cam is convex with the first cam
The 180 ° of camshaft degrees of phase phase difference risen.Valve control machanism includes that the first valve control machanism and duaspiracle control machine
Structure.Valve adjustments lever includes that the first valve adjustments lever and duaspiracle adjust lever.First valve adjustments lever has the
One valve adjustments lever input terminal, the first valve adjustments lever output end and the first valve adjustments lever adjustable side.Duaspiracle
Adjusting lever, there is duaspiracle to adjust lever input terminal, duaspiracle adjusting lever output end and duaspiracle adjusting lever regulating
Save end.Mode transmission mechanism includes first mode transmission mechanism.First mode transmission mechanism has first mode transmission mechanism defeated
Enter end, first mode transmission mechanism output end and the support of first mode transmission mechanism.Mode alternatives mechanism has mode alternatives machine
Structure input terminal, mode alternatives reset end, the support of mode alternatives mechanism elastic reset and mode alternatives mechanism supports.First is convex
Wheel directs or through transmission mechanism and drives the first valve adjustments lever input terminal, and the first valve control machanism directs or through
Transmission mechanism adjusts the first valve adjustments lever adjustable side, and the first valve adjustments lever output end directs or through transmission mechanism
First mode transmission mechanism input terminal is driven, first mode transmission mechanism is connected by the support of first mode transmission mechanism with cylinder cap
It connects.Second cam directs or through transmission mechanism driving duaspiracle and adjusts lever input terminal, and duaspiracle control mechanism is straight
It connects perhaps direct or logical by transmission mechanism adjusting duaspiracle adjusting lever adjustable side duaspiracle adjusting lever output end
Transmission mechanism drive mode alternate mechanism input terminal is crossed, mode alternatives mechanism is connected by mode alternatives mechanism supports with cylinder cap
It connects, mode alternatives reset end is in contact with the support of mode alternatives mechanism elastic reset.Pattern switching mechanism determines the first mould
The lock state of formula transmission mechanism and mode alternatives mechanism.First mode transmission mechanism output end directs or through transmission mechanism
Drive the first valve actuating mechanism.
It increases valve actuation bridge and duaspiracle driving mechanism.First mode transmission mechanism output end is first direct or logical
Transmission mechanism is crossed, then by valve actuation bridge, finally directs or through transmission mechanism respectively and drives the first valve actuating mechanism
With duaspiracle driving mechanism.
It increases third cam.Increase second mode transmission mechanism, second mode transmission mechanism is driven with second mode
Mechanism input terminal, second mode transmission mechanism output end and the support of second mode transmission mechanism.Increase duaspiracle driving mechanism.
Increase third valve control mechanism and third valve adjusts lever.Third valve, which adjusts lever, has third valve adjusting lever defeated
Enter end, third valve adjusts lever output end and third valve adjusts lever adjustable side.Third cam directs or through transmission
Mechanism drives third valve to adjust lever input terminal, and third valve control mechanism directs or through transmission mechanism and adjusts third gas
Door adjusts lever adjustable side, and third valve adjusts lever output end and directs or through transmission mechanism driving second mode driver
Structure input terminal, second mode transmission mechanism is supported by second mode transmission mechanism to be connected with cylinder cap.Pattern switching mechanism determines
Determine the lock state of first mode transmission mechanism, mode alternatives mechanism and second mode transmission mechanism three.Second mode transmission
Mechanism output end directs or through transmission mechanism driving duaspiracle driving mechanism.
It increases a pattern switching mechanism, that is, uses left-hand mode switching mechanism and right-hand mode switching mechanism.Left side
Pattern switching mechanism determines that the lock state of first mode transmission mechanism and mode alternatives mechanism, right-hand mode switching mechanism determine
The lock state of mode alternatives mechanism and second mode transmission mechanism.
Pattern switching mechanism is arranged in the switching channel being arranged on locked component, and moves along channel.
For valve control machanism using mechanical, electro-hydraulic, electromagnetism, motor or electric mechanism as control unit, use is hydraulic
Component, adjustable track, adjusting rod or four-bar mechanism are as execution unit.
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 compact multimode formula Variabale valve actuation system mainly include camshaft,
Mode transmission mechanism, mode alternatives mechanism, pattern switching mechanism, camshaft phase regulating mechanism, valve adjustments lever, valve control
Mechanism processed etc. is used cooperatively by pattern switching mechanism and camshaft phase regulating mechanism, realizes the driving of engine two-stroke
Switching between the various modes such as mode, four stroke drive modes, two-stroke braking mode, four stroke braking modes；(b) every
Under kind mode, it is used cooperatively, is realized to this by camshaft phase regulating mechanism valve control machanism corresponding with the mode
The generator operating conditions of different operating points advanced optimize under mode, finally improve engine power performance, fuel oil comprehensively
Economy, emission performance and braking safety；(c) the configuration of the present invention is simple is compact, and practical application foreground is good.
Detailed description of the invention
The present invention is further described with embodiment with reference to the accompanying drawing.
Fig. 1 is a kind of single compact multimode formula changeable air valve for switching single valve operation of biconvex wheel drive dual input list output
The schematic diagram of drive system.
Fig. 2 is a kind of compact multimode formula changeable air valve of the single switching dual valve operation of biconvex wheel drive dual input list output
The schematic diagram of drive system.
Fig. 3 is a kind of compact multimode formula changeable air valve of three actuated by cams three input dual output list switching dual valve operation
The schematic diagram of drive system.
Fig. 4 is a kind of compact multimode formula changeable air valve of the double switching dual valve operations of three actuated by cams three input dual output
The schematic diagram of drive system.
Fig. 5 is a kind of single compact multimode formula changeable air valve for switching single valve operation of biconvex wheel drive dual input list output
One exemplary schematic diagram of drive system.
Fig. 6 is a kind of compact multimode formula changeable air valve of three actuated by cams three input dual output list switching dual valve operation
One exemplary schematic diagram of drive system.
In figure: 1, cylinder cap；201, the first valve actuating mechanism；202, duaspiracle driving mechanism；3, camshaft；301,
One cam；302, the second cam；303, third cam；4, camshaft phase regulating mechanism；501, the first valve control machanism；
502, duaspiracle control mechanism；503, third valve control mechanism；501TL, first adjust cam；501GD, the first buffer rail
Road；502TL, second adjust cam；502GD, the second adjustable track；503TL, third adjust cam；503GD, third buffer rail
Road；601, the first valve adjustments lever；601a, the first valve adjustments lever input terminal；601b, the output of the first valve adjustments lever
End；601c, the first valve adjustments lever adjustable side；602, duaspiracle adjusts lever；602a, duaspiracle adjust lever input
End；602b, duaspiracle adjust lever output end；602c, duaspiracle adjust lever adjustable side；603, third valve adjusts thick stick
Bar；603a, third valve adjust lever input terminal；603b, third valve adjust lever output end；603c, third valve are adjusted
Lever adjustable side；601K, first back-moving spring；602K, second back-moving spring；603K, third reset spring；701, first mode
Transmission mechanism；701a, first mode transmission mechanism input terminal；701b, first mode transmission mechanism output end；701c, the first mould
Formula transmission mechanism switching channel；701y, the support of first mode transmission mechanism；702, second mode transmission mechanism；702a, the second mould
Formula transmission mechanism input terminal；702b, second mode transmission mechanism output end；702c, second mode transmission mechanism switching channel；
702y, the support of second mode transmission mechanism；8, mode alternatives mechanism；8a, mode alternatives mechanism input terminal；8c, mode alternatives machine
Structure switching channel；8k, mode alternatives reset end；8h, the support of mode alternatives mechanism elastic reset；8y, mode alternatives mechanism
Support；Switching channel on the left of 8Ac, mode alternatives mechanism；Switching channel on the right side of 8Bc, mode alternatives mechanism；9, pattern switching machine
Structure；9A, left-hand mode switching mechanism；9B, right-hand mode switching mechanism；10, valve actuation bridge.
Specific embodiment
The present invention relates to a kind of compact multimode formula Variabale valve actuation systems, it includes valve actuating mechanism, camshaft
3, camshaft phase regulating mechanism 4, valve control machanism, valve adjustments lever, mode transmission mechanism, mode alternatives mechanism 8, mould
Formula switching mechanism 9.Fig. 1 is that a kind of single compact multimode formula for switching single valve operation of biconvex wheel drive dual input list output is variable
The schematic diagram of valve-driving system.Valve actuating mechanism includes the first valve actuating mechanism 201.First is provided on camshaft 3
Cam 301 and the second cam 302.Valve control machanism includes the first valve control machanism 501 and duaspiracle control mechanism
502.Valve adjustments lever includes that the first valve adjustments lever 601 and duaspiracle adjust lever 602.First valve adjustments lever
601 have the first valve adjustments lever input terminal 601a, the first valve adjustments lever output end 601b and the first valve adjustments thick stick
Bar adjustable side 601c.Duaspiracle adjusts lever 602, and there is duaspiracle to adjust lever input terminal 602a, duaspiracle adjusting thick stick
Bar output end 602b and duaspiracle adjust lever adjustable side 602c.Mode transmission mechanism includes first mode transmission mechanism 701.
First mode transmission mechanism 701 has first mode transmission mechanism input terminal 701a, first mode transmission mechanism output end 701b
701y is supported with first mode transmission mechanism.Mode alternatives mechanism 8 has mode alternatives mechanism input terminal 8a, mode alternatives mechanism
Reset terminal 8k, mode alternatives mechanism elastic reset support 8h and mode alternatives mechanism supports 8y.First cam 301 is direct or logical
It crosses transmission mechanism and drives the first valve adjustments lever input terminal 601a, the first valve control machanism 501 directs or through transmission
Mechanism adjusts the first valve adjustments lever adjustable side 601c, the first valve adjustments lever output end 601b and directs or through transmission
Mechanism drives first mode transmission mechanism input terminal 701a, and first mode transmission mechanism 701 passes through first mode transmission mechanism branch
Support 701y is connected with cylinder cap 1.Second cam 302 directs or through transmission mechanism driving duaspiracle and adjusts lever input terminal
602a, duaspiracle control mechanism 502 direct or through transmission mechanism and adjust duaspiracle adjusting lever adjustable side 602c, the
Two valve adjustments lever output end 602b direct or through transmission mechanism drive mode alternate mechanism input terminal 8a, mode alternatives
Mechanism 8 is connected by mode alternatives mechanism supports 8y with cylinder cap 1, mode alternatives reset end 8k and mode alternatives mechanism bullet
Property reset support 8h be in contact.The locking of pattern switching mechanism 9 decision first mode transmission mechanism 701 and mode alternatives mechanism 8
State.First mode transmission mechanism output end 701b directs or through transmission mechanism and drives the first valve actuating mechanism 201.Institute
Stating transmission mechanism is sliding block, push rod, rocker arm, swing arm, four-bar mechanism or Hydraulic Main from piston type mechanism.Since four strokes drive
Dynamic model formula and four stroke braking modes are that every 720 ° of crank angles import/exhaust door operation is primary, both modes are referred to as four punchings
Journey mode；Two-stroke drive mode and two-stroke braking mode are that every 360 ° of crank angles import/exhaust door operation is primary, claim this
Both of which is two-stroke mode；In the case that number of stroke is constant, import/exhaust door running frequency is constant, then, import/exhaust door
A cam can be used to drive, is matched with camshaft phase regulating mechanism 4 by valve control machanism come for specific operating condition
Point provides corresponding valve opening timing and opens the duration.First cam 301 has a protrusion, and the second cam 302 has
One protrusion or two protrusions.The molded line of protrusion and the protrusion of the first cam 301 with a second raised cam 302
It is identical, 180 ° of camshaft degrees of phase phase difference.There are two two raised molded line of the second cam 302 of protrusion and first are convex for tool
The molded line of the protrusion of wheel 301 is identical, the phase phase of the protrusion of a raised phase and the first cam 301 for the second cam 302
Together, 180 ° of camshaft degrees of phase phase difference of the protrusion of the phase and the first cam 301 of another protrusion of the second cam 302.
When pattern switching mechanism 9 does not lock first mode transmission mechanism 701 and mode alternatives mechanism 8, the first cam 301 passes through the
One valve adjustments lever 601 and first mode transmission mechanism 701 drive the first valve actuating mechanism 201, the first control mechanism 501
Control the operating condition of the first valve actuating mechanism 201.Second cam 302 does not work.When pattern switching mechanism 9 is by the first mould
When formula transmission mechanism 701 and mode alternatives mechanism 8 lock, the first cam 301 is by the first valve adjustments lever 601, and second
Cam 302 adjusts lever 602, mode alternatives mechanism 8 by duaspiracle, and later, the two drives first mode driver jointly
Structure 701 drives the first valve actuating mechanism 201,502 the first valve of co- controlling of the first control mechanism 501 and the second control mechanism
The operating condition of driving mechanism 201.Fig. 5 is a kind of single compact for switching single valve operation of biconvex wheel drive dual input list output
One exemplary schematic diagram of multi-mode Variabale valve actuation system.The second cam 302 uses two protrusions in Fig. 5.
Fig. 2 is a kind of compact multimode formula changeable air valve of the single switching dual valve operation of biconvex wheel drive dual input list output
The schematic diagram of drive system.It increases valve actuation bridge 10 and duaspiracle driving mechanism 202.The output of first mode transmission mechanism
End 701b first direct or through transmission mechanism pass through again valve actuation bridge 10 finally direct or through respectively transmission mechanism drive
Dynamic first valve actuating mechanism 201 and duaspiracle driving mechanism 202.Realize the first valve actuating mechanism 201 and the second gas
The synchronous adjustment of door drive mechanism 202.
Fig. 3 is a kind of compact multimode formula changeable air valve of three actuated by cams three input dual output list switching dual valve operation
The schematic diagram of drive system.It increases third cam 303.Increase second mode transmission mechanism 702, second mode transmission mechanism
702 have second mode transmission mechanism input terminal 702a, second mode transmission mechanism output end 702b and second mode driver
Structure supports 702y.Increase duaspiracle driving mechanism 202.Increase third valve control mechanism 503 and third valve adjusts lever
603.Third valve adjusts lever 603, and there is third valve to adjust lever input terminal 603a, third valve adjusting lever output end
603b and third valve adjust lever adjustable side 603c.Third cam 303 directs or through transmission mechanism driving third valve
Lever input terminal 603a is adjusted, third valve control mechanism 503 directs or through transmission mechanism and adjusts third valve adjusting thick stick
Bar adjustable side 603c, third valve adjust lever output end 603b and direct or through transmission mechanism driving second mode driver
Structure input terminal 702a, second mode transmission mechanism 702 support 702y to be connected with cylinder cap 1 by second mode transmission mechanism.Mould
Formula switching mechanism 9 determines the lock of first mode transmission mechanism 701,702 three of mode alternatives mechanism 8 and second mode transmission mechanism
Determine state.Second mode transmission mechanism output end 702b directs or through transmission mechanism driving duaspiracle driving mechanism 202.
When pattern switching mechanism 9 is not by 702 three of first mode transmission mechanism 701, mode alternatives mechanism 8 and second mode transmission mechanism
When locking, the first cam 301 drives the first valve to drive by the first valve adjustments lever 601 and first mode transmission mechanism 701
Motivation structure 201, the first control mechanism 501 control the operating condition of the first valve actuating mechanism 201；Third cam 303 passes through the
Three valve adjusts lever 603 and second mode transmission mechanism 702 drives duaspiracle driving mechanism 202, third control mechanism 503
Control the operating condition of duaspiracle driving mechanism 202；Second cam 302 does not work.When pattern switching mechanism 9 is by the first mould
When formula transmission mechanism 701, mode alternatives mechanism 8 and 702 three of second mode transmission mechanism lock, the first cam 301 passes through the
One valve adjustments lever 601 and first mode transmission mechanism 701 drive the first valve actuating mechanism 201, the first control mechanism 501
Control the operating condition of the first valve actuating mechanism 201；Third cam 303 adjusts lever 603 and the second mould by third valve
Formula transmission mechanism 702 drives duaspiracle driving mechanism 202, and third control mechanism 503 controls duaspiracle driving mechanism 202
Operating condition；At the same time, after the second cam 302 adjusts lever 602 and mode alternatives mechanism 8 by duaspiracle, it is divided into two
Road, drives the first valve actuating mechanism 201 by first mode transmission mechanism 701 all the way, and another way is driven by second mode
Mechanism 702 drives duaspiracle driving mechanism 202, and the second control mechanism 502 controls the first valve actuating mechanism 201 and the second mould
The operating condition of formula transmission mechanism 702.Therefore the first valve actuating mechanism 201 is driven jointly by the first cam 301 and the second cam 302
It is dynamic, by 502 co- controlling of the first control mechanism 501 and the second control mechanism.Duaspiracle driving mechanism 202 is by the second cam
302 and third cam 303 jointly drive, by 503 co- controlling of the second control mechanism 502 and third control mechanism.Fig. 6 is three convex
One of a kind of compact multimode formula Variabale valve actuation system of the input dual output list switching dual valve operation of wheel drive three shows
The schematic diagram of example.
Fig. 4 is a kind of compact multimode formula changeable air valve of the double switching dual valve operations of three actuated by cams three input dual output
The schematic diagram of drive system.It increases pattern switching mechanism 9, that is, uses left-hand mode switching mechanism 9A and right-hand mode switching machine
Structure 9B.Left-hand mode switching mechanism 9A determines the lock state of first mode transmission mechanism 701 and mode alternatives mechanism 8, right side
The lock state of pattern switching mechanism 9B decision mode alternatives mechanism 8 and second mode transmission mechanism 702.
Valve adjustments lever uses lever mechanism, including lever, three fulcrums of lever are respectively that valve adjustments lever is defeated
Enter end, valve adjustments lever output end and valve adjustments lever adjustable side.It may also include reset spring K according to actual needs.Gas
Door adjusts lever input terminal and is arranged on the intermediate support of lever, valve adjustments lever output end and valve adjustments lever adjustable side
It is separately positioned on other two fulcrums of lever, such as Fig. 5 and Fig. 6.It can also be that valve adjustments lever output end is arranged in thick stick
On the intermediate support of bar, valve adjustments lever input terminal and valve adjustments lever adjustable side are separately positioned on other two of lever
On fulcrum or valve adjustments lever adjustable side is arranged on the intermediate support of lever, and valve adjustments lever input terminal is gentle
Door adjusts lever output end and is separately positioned on other two fulcrums of lever.
Various ways can be used in valve control machanism.Valve control machanism is using mechanical, electro-hydraulic, electromagnetism, motor or electricity
Mechanism of qi structure is as control unit, using hydraulic unit, adjustable track, adjusting rod or four-bar mechanism as execution unit.Such as gas
Door control mechanism may include mechanical, electro-hydraulic, electromagnetism, motor or control units and the adjustable track such as electrically, valve adjustments lever
Adjustable side is in contact with the output end of control mechanism and adjustable track simultaneously, the output end of valve control machanism adjusting control mechanism
Output quantity, thus realize valve adjustments lever adjustable side by control mechanism output end push, run along adjustable track.Such as
Shown in Fig. 5 and Fig. 6, the first valve control machanism 501 may include output end using the first adjusting cam 501TL and the first buffer rail
The mechanism of road 501GD, the first valve adjustments lever adjustable side 601a adjust cam 501TL and the first adjustable track with first simultaneously
501GD is in contact, by changing the first phase for adjusting cam 501TL, to realize the first valve adjustments lever adjustable side
601a adjusts cam 501TL by first and pushes, and runs along the first adjustable track 501GD.Valve control machanism may also include machine
Tool, electro-hydraulic, electromagnetism, motor or control units and adjusting rod, the adjusting rod such as electrical pass through the first hinge joint of adjusting rod and cylinder cap 1
Fixed hinge, valve adjustments lever adjustable side are arranged on adjusting rod or its strut, and control mechanism adjusts adjusting rod around tune
The first hinge joint of pole rotation, to change the position of valve adjustments lever adjustable side.Valve control machanism may also include it is mechanical,
Electro-hydraulic, electromagnetism, motor or control units and the four-bar mechanism such as electrical.If four-bar mechanism includes the first adjusting rod, the second adjusting
Bar and 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, and second is adjusted
Bar and third adjusting rod are hinged, and third adjusting rod and 1 fixed hinge of cylinder cap, control mechanism adjust the first adjusting rod or third tune
A bar or other two adjusting rod in the rotation angle of pole, valve adjustments lever adjustable side and other two adjusting rod
In the strut of a bar be in contact.If valve control machanism 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 controls the rotation angle of the first adjusting rod, and valve adjustments lever adjustable side and the second adjusting rod are adjusted and slided
Block or the strut of one of which are in contact.Or valve control machanism controls to adjust the amount of movement of sliding block, valve adjustments
Lever adjustable side is in contact with the strut of the first adjusting rod, the second adjusting rod or one of which.In practical applications, on
Component is stated to need to be deformed according to actual needs.As adjusting rod can be replaced with eccentric wheel.Push rod, thick stick can be used by adjusting cam
The on-fixed fulcrum of bar or eccentric wheel etc. replace.
Various structures can be used in pattern switching mechanism.As cutting of being arranged on locked component is arranged in pattern switching mechanism
It changes in channel, and is moved along channel.Its position in channel is adjusted by the mechanisms such as electromagnetism, hydraulic, mechanical, to control
Whether it is locked between locked component.Such as Fig. 1, pattern switching mechanism 9 can be a switching pin, be driven in first mode
First mode transmission mechanism switching channel 701c is set in mechanism 701, Setting pattern alternate mechanism switching in mode alternatives mechanism 8
Channel 8c.When the switching pin is in first mode transmission mechanism switching channel 701c and mode alternatives mechanism switching channel 8c simultaneously
When middle, first mode transmission mechanism 701 and mode alternatives mechanism 8 are in the lock state.When the switching pin is only in first mode
When in transmission mechanism switching channel 701c or in mode alternatives mechanism switching channel 8c, first mode transmission mechanism 701 and mould
Formula alternate mechanism 8 is in unlocked state.For another example Fig. 4, pattern switching mechanism 9 can be for a switching pins and with movable spring
The reset spring of seat.When effect of the switching pin by the driving forces such as electromagnetism, hydraulic, it is moved to the left, compressed spring, to make to cut
It changes pin to protrude into first mode transmission mechanism switching channel 701c, at this point, the switching pin is in first mode transmission mechanism simultaneously
When in switching channel 701c and mode alternatives mechanism switching channel 8c, at first mode transmission mechanism 701 and mode alternatives mechanism 8
In lock state.When the driving force that switching pin is subject to disappears, switching pin moves right under the action of reset spring, leaves
First mode transmission mechanism switching channel 701c, so that the switching pin is only in mode alternatives mechanism switching channel 8c, first
Mode transmission mechanism 701 and mode alternatives mechanism 8 are in unlocked state.
Claims (7)
1. a kind of compact multimode formula Variabale valve actuation system, it includes camshaft (3), valve actuating mechanism and camshaft phase
Position regulating mechanism (4), it is characterized in that: further comprising valve control machanism, valve adjustments lever, mode transmission mechanism, mode are standby
Select mechanism (8), pattern switching mechanism (9)；Wherein, valve actuating mechanism includes the first valve actuating mechanism (201)；Camshaft
(3) the first cam (301) and the second cam (302) are provided on；First cam (301) has a protrusion, the second cam
(302) there are a protrusion or two protrusions；Protrusion and the first cam with raised second cam (302)
(301) molded line of protrusion is identical, 180 ° of camshaft degrees of phase phase difference；The two of the second cam (302) for protrusion that there are two tools
The molded line of protrusion of the molded line of a protrusion and the first cam (301) is identical, a raised phase of the second cam (302) and the
The phase of the protrusion of one cam (301) is identical, phase and the first cam (301) of another protrusion of the second cam (302)
180 ° of camshaft degrees of phase phase difference of protrusion；Valve control machanism includes the first valve control machanism (501) and duaspiracle
Control mechanism (502)；Valve adjustments lever includes that the first valve adjustments lever (601) and duaspiracle adjust lever (602)；The
One valve adjustments lever (601) has the first valve adjustments lever input terminal (601a), the first valve adjustments lever output end
(601b) and the first valve adjustments lever adjustable side (601c)；Duaspiracle adjusts lever (602), and there is duaspiracle to adjust thick stick
Bar input terminal (602a), duaspiracle adjust lever output end (602b) and duaspiracle adjusts lever adjustable side (602c)；Mould
Formula transmission mechanism includes first mode transmission mechanism (701)；First mode transmission mechanism (701) has first mode transmission mechanism
Input terminal (701a), first mode transmission mechanism output end (701b) and first mode transmission mechanism support (701y)；Mode is standby
Mechanism (8) are selected to have mode alternatives mechanism input terminal (8a), mode alternatives reset end (8k), mode alternatives mechanism elasticity multiple
Position support (8h) and mode alternatives mechanism supports (8y)；First cam (301) directs or through transmission mechanism and drives the first gas
Door adjusts lever input terminal (601a), and the first valve control machanism (501) directs or through transmission mechanism and adjusts the first valve
It adjusts lever adjustable side (601c), the first valve adjustments lever output end (601b) directs or through transmission mechanism driving first
Mode transmission mechanism input terminal (701a), first mode transmission mechanism (701) pass through first mode transmission mechanism support (701y)
It is connected with cylinder cap (1)；Second cam (302) directs or through transmission mechanism driving duaspiracle and adjusts lever input terminal
(602a), duaspiracle control mechanism (502) direct or through transmission mechanism and adjust duaspiracle adjusting lever adjustable side
(602c), duaspiracle adjust lever output end (602b) and direct or through transmission mechanism drive mode alternate mechanism input terminal
(8a), mode alternatives mechanism (8) are connected by mode alternatives mechanism supports (8y) with cylinder cap (1), mode alternatives reset
End (8k) is in contact with mode alternatives mechanism elastic reset support (8h)；Pattern switching mechanism (9) determines first mode driver
The lock state of structure (701) and mode alternatives mechanism (8)；First mode transmission mechanism output end (701b) directs or through biography
Motivation structure drives the first valve actuating mechanism (201).
2. a kind of compact multimode formula Variabale valve actuation system according to claim 1 drives it is characterized in that: increasing valve
Dynamic bridge (10) and duaspiracle driving mechanism (202)；First mode transmission mechanism output end (701b) first directs or through biography
Motivation structure passes through valve actuation bridge (10) again and finally directs or through transmission mechanism the first valve actuating mechanism of driving respectively
(201) and duaspiracle driving mechanism (202).
3. a kind of compact multimode formula Variabale valve actuation system according to claim 1, it is characterized in that: it is convex to increase third
It takes turns (303)；Increase second mode transmission mechanism (702), second mode transmission mechanism (702) has second mode transmission mechanism defeated
Enter end (702a), second mode transmission mechanism output end (702b) and second mode transmission mechanism support (702y)；Increase by second
Valve actuating mechanism (202)；Increase third valve control mechanism (503) and third valve adjusts lever (603)；Third valve tune
Saving lever (603) has that third valve adjusts lever input terminal (603a), third valve adjusts lever output end (603b) and the
Three valve adjusts lever adjustable side (603c)；Third cam (303) directs or through transmission mechanism driving third valve and adjusts
Lever input terminal (603a), third valve control mechanism (503) direct or through transmission mechanism and adjust third valve adjusting thick stick
Bar adjustable side (603c), third valve adjust lever output end (603b) and direct or through transmission mechanism driving second mode biography
Motivation structure input terminal (702a), second mode transmission mechanism (702) pass through second mode transmission mechanism support (702y) and cylinder cap
(1) it is connected；Pattern switching mechanism (9) determines first mode transmission mechanism (701), mode alternatives mechanism (8) and second mode
The lock state of transmission mechanism (702) three；Second mode transmission mechanism output end (702b) directs or through transmission mechanism
It drives duaspiracle driving mechanism (202).
4. a kind of compact multimode formula Variabale valve actuation system according to claim 3 is cut it is characterized in that: increasing mode
It changes planes structure (9), that is, uses left-hand mode switching mechanism (9A) and right-hand mode switching mechanism (9B)；Left-hand mode switching mechanism
(9A) determines the lock state of first mode transmission mechanism (701) and mode alternatives mechanism (8), right-hand mode switching mechanism (9B)
Determine the lock state of mode alternatives mechanism (8) and second mode transmission mechanism (702).
5. a kind of compact multimode formula Variabale valve actuation system according to claim 1, it is characterized in that: pattern switching machine
Structure is arranged in the switching channel being arranged on locked component, and moves along channel.
6. a kind of compact multimode formula Variabale valve actuation system according to claim 1, it is characterized in that: valve controls machine
Structure (5) using mechanical, electro-hydraulic, electromagnetism, motor or electric mechanism as control unit, using hydraulic unit, adjustable track,
Adjusting rod or four-bar mechanism are as execution unit.
7. a kind of compact multimode formula Variabale valve actuation system according to claim 1, it is characterized in that: the driver
Structure is sliding block, push rod, rocker arm, swing arm, four-bar mechanism or Hydraulic Main from piston type mechanism.
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| CN201611145941.XA CN106762011B (en) | 2016-12-13 | 2016-12-13 | A kind of compact multimode formula Variabale valve actuation system |
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| CN201611145941.XA CN106762011B (en) | 2016-12-13 | 2016-12-13 | A kind of compact multimode formula Variabale valve actuation system |
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| CN106762011B true CN106762011B (en) | 2018-12-25 |
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| CN108049931B (en) * | 2017-11-29 | 2020-01-10 | 大连理工大学 | Variable-mode continuously variable valve mechanism |
| CN108060951B (en) * | 2017-11-29 | 2020-01-10 | 大连理工大学 | Variable-mode continuously variable valve mechanism |
| CN108301930B (en) * | 2018-02-13 | 2020-07-31 | 无锡威孚高科技集团股份有限公司 | Four-stroke and two-stroke switching control method and system for engine electric control valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4228796A1 (en) * | 1992-08-29 | 1994-03-03 | Porsche Ag | Valve drive arrangement for an internal combustion engine |
| DE4322212A1 (en) * | 1993-07-03 | 1995-01-12 | Bayerische Motoren Werke Ag | Cam-controlled valve actuation for a 4-stroke/8-stroke internal combustion engine |
| US7156059B2 (en) * | 2003-11-06 | 2007-01-02 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Variable valve train apparatus for an internal combustion engine |
| JP4539430B2 (en) * | 2005-05-11 | 2010-09-08 | トヨタ自動車株式会社 | Variable valve gear |
| CN101457678A (en) * | 2008-12-31 | 2009-06-17 | 奇瑞汽车股份有限公司 | Novel lift range valve mechanism for variable valve |
| JP2012007520A (en) * | 2010-06-23 | 2012-01-12 | Honda Motor Co Ltd | Variable valve timing device of internal combustion engine |
| CN102733882B (en) * | 2011-04-07 | 2016-01-20 | 朱譞晟 | Support the full Variable Valve Time of rod-type and lift mechanisms |
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