CN110173320A - The valve lift apparatus that valve stroke and valve opening time can be changed simultaneously - Google Patents
The valve lift apparatus that valve stroke and valve opening time can be changed simultaneously Download PDFInfo
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- CN110173320A CN110173320A CN201910578018.2A CN201910578018A CN110173320A CN 110173320 A CN110173320 A CN 110173320A CN 201910578018 A CN201910578018 A CN 201910578018A CN 110173320 A CN110173320 A CN 110173320A
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- valve
- swing arm
- sliding block
- cam
- opening time
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- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 230000008859 change Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- IYLGZMTXKJYONK-ACLXAEORSA-N (12s,15r)-15-hydroxy-11,16-dioxo-15,20-dihydrosenecionan-12-yl acetate Chemical compound O1C(=O)[C@](CC)(O)C[C@@H](C)[C@](C)(OC(C)=O)C(=O)OCC2=CCN3[C@H]2[C@H]1CC3 IYLGZMTXKJYONK-ACLXAEORSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- IYLGZMTXKJYONK-UHFFFAOYSA-N ruwenine Natural products O1C(=O)C(CC)(O)CC(C)C(C)(OC(C)=O)C(=O)OCC2=CCN3C2C1CC3 IYLGZMTXKJYONK-UHFFFAOYSA-N 0.000 description 1
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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-pivot rocking arms
-
- 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
-
- 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
- F01L13/0021—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 by modification of rocker arm ratio
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses a kind of valve stroke and valve opening time valve lift apparatus variable simultaneously, including driving cam, swing arm and valve assembly, described swing arm one end is hinged, other end is applied to valve assembly, the both ends middle position for driving cam rolling assembling in a fixed position and to act on swing arm, apply pressure to swing arm, valve opening is controlled by the leverage of swing arm, the swing arm is hinged on sliding block, the slider guide setting, and it is connect with a pushing mechanism, the pushing mechanism driving sliding block and swing arm are slided together, so that the hinged support of swing arm, consecutive variations occur for the active position and swing arm of swing arm and driving cam and the active position of valve assembly.The present invention realizes both valve stroke and valve opening time angle continuous variable, improves the intake and exhaust efficiency of engine, improve the economics, dynamic property and emission performance of engine by adjusting the relative position of swing arm and driving cam.
Description
Technical field
The present invention relates to a kind of engine valve actuating mechanisms, and in particular to a kind of valve stroke and valve opening time simultaneously can
The valve lift apparatus of change.
Background technique
For most of engines, inlet and exhaust valve lift is fixed immutable, that is, the cam profile of camshaft
It is only a kind of.This, which has resulted in the lift, so that engine is all obtained good response in high velocity and low regime.Tradition hair
The valve stroke of motivation --- design of cam contour line is the balance selection to engine under full working scope, as a result, engine
Both it cannot get optimal high speed efficiency, and also cannot get optimal low speed torque, and inlet loss occurred excessive with fuel consumption.
The use of lift range variable (VVL), makes engine that can obtain the gas of meet demand in high velocity and low regime
Door lift, so as to improve high engine speeds power and low speed torque.The realization of existing lift range variable includes two kinds of structures
Form, one is intake rocker is controlled using multiple cams, the cam for switching to different height realizes the different opening of valve
Control, this valve stroke variation can only be controlled by the quantity of cam, and usually two groups of cams or three groups of cams are not done
Method accomplishes the continuous stepless variation of valve stroke；Another kind is the opening and closing that valve is directly driven by hydraulic pressure unit, this mode
It can be realized the stepless continuous variation of valve stroke, but the setting of hydraulic pressure unit is so that motor mechanisms structure is more complicated,
It needs to carry out biggish structural modification to available engine air valve structure, and the mechanical knot of work no cam and rocker arm control
Structure is reliable.
Summary of the invention
Technical problem solved by the present invention is being directed to existing lift range variable technology, it is gentle to provide a kind of valve stroke
Door opening time valve lift apparatus variable simultaneously.
The present invention adopts the following technical scheme that realization:
The valve lift apparatus that valve stroke and valve opening time can be changed simultaneously, including driving cam 10,20 and of swing arm
Valve assembly 30, described 30 one end of swing arm is hinged, and other end is applied to valve assembly 30,10 rolling assembling of driving cam
In a fixed position and the both ends middle position of swing arm 20 is acted on, applies pressure to swing arm 20, the lever for passing through swing arm 20 is made
With control valve opening, the swing arm 20 is hinged on sliding block 40, the guiding of sliding block 40 setting, and is connected with a pushing mechanism 50
It connects, the pushing mechanism 50 drives sliding block 40 and swing arm 20 to slide together, so that the hinged support of swing arm 20, swing arm 20 and driving
Consecutive variations occur for the active position of the active position of cam 10 and swing arm 20 and valve assembly 30.
Further, the guiding of sliding block 40 is assemblied in fixed sliding slot 80.
Further, 20 end of swing arm is filled by shaft 60 and the hinge of sliding block 40, the hinge of the sliding block 40 and swing arm 20
Holding position is provided with the first spring 70 acted on swing arm 20 always on valve assembly 30.
Further, the corresponding swing arm 20 of valve assembly 30 of synchronization action is assemblied in same sliding block by same shaft 60
On 40.
Preferred in continuous variable air valve lift apparatus of the invention, the pushing mechanism 50 is cam mechanism, including
The control cam 51 and sliding block 40 is made to contact the second spring for controlling cam 51 always that driving sliding block 40 moves in sliding slot 80
53。
Further, described 53 one end of second spring is connected on sliding block 40, and the other end passes through fixing axle 52 and sliding slot 80
Connection, control cam 51 push sliding block 40 to make second spring 53 that flexible deformation, the elastic acting force that second spring 53 generates occur
Control sliding block 40 is pressed into contact with control cam 51.
Preferred in continuous variable air valve lift apparatus of the invention, the pushing mechanism 50 uses screw body, tooth
Take turns rackwork, slider-crank mechanism, electric pushrod or hydraulic push rod.
Further, the glide direction of the swing arm component 20 and the working flank opposed swing arms component 20 of driving cam 10
It is obliquely installed.
The present invention is real by the change in location for changing the lever construction constituted between driving cam, swing arm and valve assembly
The highly sensitive and large-scale adjusting of existing valve stroke makes swing arm by driving cam to act on swing arm to cut with scissors dress fulcrum and do and revolve
Switch is dynamic, and swing arm component ends are contacted and pushed with valve tappet, so that valve be driven to open；Swing arm is cut with scissors by shaft and sliding block
It connects, pushes sliding block to cause swing arm component to do mass motion so that sliding block be made to move back and forth in sliding slot by pushing mechanism, from
And send out the active position three of the hinged support of swing arm, the active position of swing arm and driving cam and swing arm and valve assembly
Changing realizes valve stroke continuous variable.
Guiding sliding side in the present invention also by the working flank of swing arm and driving cam relative to swing arm and sliding block itself
To being set as inclined-plane, so that drive cam also can be with swing arm relative to the gap between swing arm into angle of repose acting surface
It slides and changes with the guiding of sliding block, the variation in the gap causes the angle for driving cam to push swing arm to become
Change, it is final to realize the synchronous consecutive variations in valve opening time angle while valve stroke changes.Even by adjusting swing arm and drive
Moving cam relative position to gap between the two is more than the lift of driving cam, can also realize that engine corresponds to the cylinder of valve
Body closes cylinder control.
In conclusion continuous variable air valve lift apparatus of the invention is adjusted on the basis of rocker-arm valve mechanical structure
Whole swing arm be slide construction, adapt to Different Work Condition of Engine valve stroke and valve opening time angle simultaneously continuous variable, make
Engine provides optimal valve stroke and valve opening time angle in the full range of speeds, whole still with the machine of rocker arm valve
Tool structure does not need the air valve structure for significantly alterring available engine, and structure is simple, and cost is relatively low for mechanical structure, work
Make reliably, the valve of synchronization action can be assemblied on same sliding block by same shaft, and assembly efficiency and maintenance is greatly improved just
Benefit, difference movement valves between be able to achieve each cylinder valve it is separately adjustable, improve the intake and exhaust efficiency of engine, promoted
The economics of engine, dynamic property and emission performance.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Detailed description of the invention
Fig. 1 is the schematic illustration of the valve lift apparatus in embodiment.
Fig. 2 is that the valve stroke of the valve lift apparatus in embodiment becomes larger status diagram.
Fig. 3 is the lever principle figure of the valve lift apparatus in embodiment.
Fig. 4 is the slide block structure schematic diagram in embodiment.
Fig. 5 is the assembling schematic diagram of the swing arm and sliding block in embodiment.
Fig. 6 is the assembling schematic diagram of the entire valve lift apparatus in embodiment.
Figure label: 10- driving cam, 20- swing arm, 30- valve assembly, 31- valve tappet, 32- valve, 40- sliding block,
50- pushing mechanism, 51- control cam, 52- fixing axle, 53- second spring, 60- shaft, the first spring of 70-, 80- sliding slot.
Specific embodiment
Embodiment
Referring to Fig. 1 and Fig. 2, the valve lift apparatus that the valve stroke in diagram and valve opening time can be changed simultaneously is this
The specific embodiment of invention specifically includes driving cam 10, swing arm 20, valve assembly 30, sliding block 40, pushing mechanism 50, turns
Axis 60, the first spring 70 and sliding slot 80.Valve assembly 30 includes valve tappet 31 and valve 32, and it is each to be separately mounted to engine
The air inlet and exhaust outlet of cylinder are in off state under normality, open valve by pushing valve assembly 30.In the present embodiment
Valve assembly 30 using rocker-arm valve mechanical structure control open, wherein 20 one end of swing arm is hingedly used as lever branch
Point, swing arm 20 have the rotary freedom swung centered on the hinge joint, and the other end of swing arm 20 acts directly on gas
31 top of valve tappet of door component 30, driving cam 10 act on above the both ends middle position of swing arm 20, drive cam 10
The downward intermittent oscillation of swing arm 20 is pushed, is pressed downward valve tappet 31 by the leverage of swing arm 20, and then pushes lower section
Valve 32 moves down, and realizes the unlatching of valve, the unlatching lift of the swing angle control valve 32 of swing arm 20, that is, valve
The aperture of air inlet.
The above rocker-arm valve mechanical structure is existing common valve control structure, and the present embodiment is by moving swing arm 20
Dynamic setting, the leverage by the position change swing arm and driving cam of mobile swing arm 20 to valve assembly, realizes valve
The control of continuous variable lift.
Specifically, swing arm 20 in the present embodiment is hingedly mounted on sliding block 40, the guiding of sliding block 40 is assemblied in fixed
In sliding slot 80, such swing arm 20 integrally increases with sliding block 40 while opposing slider 40 is swung has the straight line of a sliding free
Degree, the connection of 40 pushing mechanism 50 of sliding block realize sliding block 40 and whole 80 reciprocating linear along the chute of swing arm 20 by pushing mechanism 50
The activation force of sliding.The other end of swing arm 20 is to connect with the top surface of valve tappet 31, and drive the peace of cam 10
Holding position opposed swing arms 20 are fixed, and swing arm 20 is by continuous moving, so that the hinged support of swing arm 20, swing arm 20 and driving
Consecutive variations occur for the active position of the active position of cam 10 and swing arm 20 and valve assembly 30, and control valve stroke is continuous
It is variable.
20 end of swing arm is filled by shaft 60 and the hinge of sliding block 40, is provided with and will be put in the hinge holding position of sliding block 40 and swing arm 20
Arm 20 acts on the first spring 70 on valve assembly 30 always, the first spring 70 can be used be sleeved in shaft 60 and respectively with
The torsional spring structure that swing arm 20 and sliding block 40 connect realizes that the end of swing arm 20 is contacted always in valve by the rotation torque of torsional spring
On tappet 31, but the active force of torsional spring application should be less than the spring reset active force of valve opening, i.e., cannot lead to merely
It crosses the first spring 70 valve is directly opened to the active force that swing arm 20 applies.
The guiding of sliding block 40 is slidedly assemblied in the sliding slot 80 of fixed setting, and sliding slot 80 defines the moving direction of sliding block 40,
Pushing mechanism 50 pushes sliding block 40 and swing arm 20 80 movement along the chute from the other end of sliding slot 80, the pushing mechanism in the present embodiment
50 be cam mechanism, including driving sliding block 40 pushes control cam 51 and driving sliding block 40 to contact control always in sliding slot 80
The second spring 53 of cam 51, wherein the cam surface of the end face of sliding block 40 and control cam 51 acts on, and is acted on and being pushed by cam
For sliding block 40 towards the direction movement close to driving cam inside sliding slot 80,53 one end of second spring is articulated in sliding block 40 and swing arm 20
It in hinged shaft 60, is moved together with sliding block 40, the other end is articulated in the fixing axle 52 being fixedly connected with sliding slot 80, relatively
Other end is fixed, and the process that control cam 51 pushes sliding block 40 mobile makes second spring 53 occur flexible deformation, and second
The elastic acting force control sliding block 40 that spring 53 generates connects when controlling cam and turning near angle of repose with the control compression of cam 51
Touching, band 40 backhaul of movable slider are mobile.Driving cam 10 and the power for controlling cam 51 can be controlled by individual power unit,
It can be sequentially connected with the output shaft synchronous of engine.
Pushing mechanism 50 drives 40 straight reciprocating of sliding block, and screw body, rack-and-pinion also can be used in practical application
Mechanism, slider-crank mechanism, electric pushrod or hydraulic push rod isoline reciprocating mechanism realize that the present embodiment is different herein
One repeats.
Cam 10 is driven to provide lower pressure of the swing arm 20 to valve tappet 31.Drive 10 rolling assembling of cam in swing arm 20
The fixation position of side, cam surface act on the middle position at 20 both ends of swing arm, and driving cam 10 only has rotary freedom,
Position opposed swing arms 20 are fixed, by driving the rotation of cam 10, push down on swing arm 20 using cam surface, push swing arm
20 to lower swing, pushes valve assembly 30 to open valve finally down.The closing of valve assembly 30 is then to lose swing arm 20
After the pressing force of driving cam 10, realized by the return spring installed between valve assembly and engine cylinder body.
Driving cam 10 acts on 20 middle position of swing arm, and swing arm 20 is made to do lever motion with its hinge joint fulcrum, by
It is connect in another end of swing arm 20 with valve tappet 31, so that valve 72 be driven to open and close.The present embodiment realization continuously may be used
The principle of air valve variation lift is that sliding block 40 and 20 entirety of swing arm is driven to move back and forth by pushing mechanism 50, to adjust swing arm 20
Hinged support, swing arm 20 and driving cam 10 active position and swing arm 20 and valve assembly 30 active position, by with
The change of upper three positions, the arm of force of entire leverage change, and then realize the consecutive variations of valve opening lift.
Driving cam 10 in diagram is located at the top of swing arm 20, in order to realize in the same of control valve stroke variation
When, the corresponding valve opening time of adjustment variation valve stroke, the present embodiment is by the working flank of swing arm 20 and driving cam 10
The glide direction of opposed swing arms 20 and sliding block 40 is obliquely installed, in this way when swing arm 20 moves integrally, driving cam 10
Gap between cam surface and the working flank of swing arm component 20 can change, and it is convex that the variation in the gap is directly translated into driving
The variation of action time of the wheel 10 in swing arm 20, by the variation in the gap, it is gentle that swing arm 20 controls valve opening time angle
Door shut-in time angle can also change simultaneously.Gap in 20 moving process of swing arm between driving cam 10 is continuous becomes
Change, so valve opening time angle α also consecutive variations.Specifically, being retouched for convenience of the present embodiment to valve opening time control
It states, " valve opening time angle " referred herein refers to rise angle, far angle of repose and the backhaul that driving cam 10 is contacted with rocker arm 20
The sum of angle, the angle α as shown in figure 1；Signified " valve-closing time angle " refers to that i.e. it is remaining to subtract the angle α after rotating 360 ° for driving cam 10
Angle, under this angle state drive cam 10 do not push rocker part 20.
While the present embodiment is mobile by adjusting swing arm 20, the variation of the relative position between driving cam 10 is realized,
Realize both valve stroke and valve opening time angle α continuous variable simultaneously.In Fig. 1, valve is under normal condition, at this time
Engine work does not both need to increase valve opening increase air inflow, does not need to reduce valve opening reduction air inflow yet,
Certain interval Δ is kept between the near angle of repose of the cam surface of swing arm at this time 20 and driving cam 10, it is convex which is less than driving
The lift of wheel 10, and swing arm 20 is tilted a certain angle and contacts with valve tappet 31, when driving 10 continuous rotation of cam is by pushing away
After journey angle, far angle of repose and backhaul corner connection contact swing arm 20,20 gap of swing arm is pushed to open valve assembly, realizes cylinder
Normal intake and exhaust.As shown in Figures 2 and 3, sliding block 40 and swing arm 20 is pushed to move to driving cam side direction in pushing mechanism 50
In dynamic process, swing arm 20 and driving cam 10 can be smaller and smaller into the clearance delta between angle of repose, when valve being caused to be opened
Between angle α it is increasing, and the arm of force L1 and swing arm component 20 for driving cam 10 to act in swing arm 20 act on valve and endure
Arm of force L2 on column 31 changes, and according to the principle of leverage, so that the valve stroke H of engine is become larger Δ H, with valve
Lift increases, and valve opening time angle α also becomes larger, and is conducive to the air inlet for increasing valve under revolving speed and the higher and higher situation of load
Amount.Clearance delta in the present invention between swing arm 20 and driving cam 10 is consecutive variations, so valve opening time angle α is also therewith
Consecutive variations.
Valve stroke then can be achieved for reverse movement swing arm 20 and valve opening time angle α continuously becomes smaller, and setting can set gas
Door lift and valve opening time angle are zero, that is, the cylinder for corresponding to valve closes cylinder technology, at this point, regardless of driving cam
10 rotations to which kind of angle position, the cam surface of driving cam 10 will not be contacted with swing arm 20, and valve opening time angle α is 0,
Corresponding valve-closing time angle is 360 °, and under this state, driving cam can not be such that valve opens, and realizes that cylinder closes
Cylinder.
The present embodiment can be separately mounted in the intake and exhaust valves of cylinder, for the valve assembly of synchronization action,
It is assemblied on same sliding block 40 by same shaft 60, the structure of sliding block 40 is as shown in figure 4, be provided with correspondence on 40 side of sliding block
The installation site of multiple swing arms 20, all swing arms 20 are cut with scissors on sliding block 40 together by same root shaft 60, such as Fig. 5 institute
Show, the first spring 70 of corresponding assembly between shaft 60 and each swing arm 20 mounts two group of second bullet in the end positions of shaft 60
Spring 53 is connect with fixed sliding slot, by the control cam contact of sliding block 40 and the sliding block other side and pushing mechanism 50, such as Fig. 6 institute
Show, all swing arms 20 for realizing that the control cam of pushing mechanism 50 pushes sliding block 40 to drive connection adjust together.Shaft 60 uses
Each part is formed assembly by single form, so that convenient be installed into sliding slot 80 in the form of assembly, assembly efficiency is high.
It can also be using independent pushing mechanisms such as hydraulic push rod or electric pushrods, to each cylinder valve swing arm in practical application
Corresponding sliding block carries out independent motion control
The above is only better embodiment of the invention, it is all according to the present invention claims range done be variation and modification,
The covering scope of the claims in the present invention should all be belonged to.
Claims (8)
1. valve stroke and valve opening time valve lift apparatus variable simultaneously, including driving cam (10), swing arm (20)
With valve assembly (30), described swing arm (30) one end is hinged, and other end is applied to valve assembly (30), the driving cam
(10) rolling assembling in a fixed position and acts on the both ends middle position of swing arm (20), applies pressure to swing arm (20), leads to
Cross the leverage control valve opening of swing arm (20), it is characterised in that:
The swing arm (20) is hinged on sliding block (40), sliding block (40) the guiding setting, and connect with a pushing mechanism (50),
Pushing mechanism (50) driving sliding block (40) and swing arm (20) are slided together, so that the hinged support of swing arm (20), swing arm
(20) consecutive variations occur with the active position of the active position of driving cam (10) and swing arm (20) and valve assembly (30).
2. valve stroke according to claim 1 and valve opening time valve lift apparatus variable simultaneously, the cunning
Block (40) guiding is assemblied in fixed sliding slot (80).
3. valve stroke according to claim 2 and valve opening time valve lift apparatus variable simultaneously, the pendulum
Arm (20) end is filled by shaft (60) and sliding block (40) hinge, the hinge holding position of the sliding block (40) and swing arm (20) be provided with by
Swing arm (20) acts on the first spring (70) on valve assembly (30) always.
4. valve stroke according to claim 3 and valve opening time valve lift apparatus variable simultaneously, synchronize dynamic
The corresponding swing arm (20) of the valve assembly (30) of work is assemblied on same sliding block (40) by same shaft (60).
5. the valve stroke dress that valve stroke described in any one of -4 and valve opening time can be changed simultaneously according to claim 1
It sets, the pushing mechanism (50) is cam mechanism, the control cam (51) moved in sliding slot (80) including driving sliding block (40)
And sliding block (40) is made to contact the second spring (53) for controlling cam (51) always.
6. valve stroke according to claim 5 and valve opening time valve lift apparatus variable simultaneously, described the
Two springs (53) one end is connected on sliding block (40), and the other end is connect by fixing axle (52) with sliding slot (80), controls cam
(51) sliding block (40) are pushed to make second spring (53) that flexible deformation occurs, the elastic acting force that second spring (53) generates, which controls, to be slided
Block (40) is pressed into contact with control cam (51).
7. the valve stroke dress that valve stroke described in any one of -4 and valve opening time can be changed simultaneously according to claim 1
It sets, the pushing mechanism (50) uses screw body, gear and rack teeth mechanism, slider-crank mechanism, electric pushrod or hydraulic thrust
Bar.
8. valve stroke according to claim 1 and valve opening time valve lift apparatus variable simultaneously, the pendulum
The upper arm member (20) and the glide direction of the working flank opposed swing arms component (20) of driving cam (10) are obliquely installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910578018.2A CN110173320A (en) | 2019-06-28 | 2019-06-28 | The valve lift apparatus that valve stroke and valve opening time can be changed simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910578018.2A CN110173320A (en) | 2019-06-28 | 2019-06-28 | The valve lift apparatus that valve stroke and valve opening time can be changed simultaneously |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110173320A true CN110173320A (en) | 2019-08-27 |
Family
ID=67699405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910578018.2A Pending CN110173320A (en) | 2019-06-28 | 2019-06-28 | The valve lift apparatus that valve stroke and valve opening time can be changed simultaneously |
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| CN (1) | CN110173320A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931712A (en) * | 2021-09-30 | 2022-01-14 | 东风商用车有限公司 | Rocker arm assembly with variable valve lift |
| US20230025775A1 (en) * | 2019-12-25 | 2023-01-26 | Kawasaki Jukogyo Kabushiki Kaisha | Variable valve mechanism |
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| DE19641068A1 (en) * | 1996-10-04 | 1997-08-28 | Klonder Armin Dipl Ing Fh | Rocker arm for valve control in piston pumps and internal combustion engines |
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| CN103147817A (en) * | 2011-12-06 | 2013-06-12 | 现代自动车株式会社 | Continuous variable valve lift apparatus |
| CN102787879A (en) * | 2012-07-27 | 2012-11-21 | 长城汽车股份有限公司 | Valve lift continuous variable mechanism of engine gas distribution system |
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| CN106481380A (en) * | 2015-08-24 | 2017-03-08 | 徐才花 | Real-time continuous adjust valve stroke and open the mechanism of duration |
| CN106761999A (en) * | 2016-12-13 | 2017-05-31 | 辽宁工业大学 | A kind of continuous variable rocker-arm valve mechanism |
| CN107503818A (en) * | 2017-06-13 | 2017-12-22 | 宝沃汽车（中国）有限公司 | Valve assembly, engine and automobile |
| CN207261064U (en) * | 2017-08-18 | 2018-04-20 | 陈德利 | A kind of engine valve actuating mechanism and engine |
| CN210087426U (en) * | 2019-06-28 | 2020-02-18 | 广汽三菱汽车有限公司 | Valve lift device with valve lift and valve opening time simultaneously variable |
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| US20230025775A1 (en) * | 2019-12-25 | 2023-01-26 | Kawasaki Jukogyo Kabushiki Kaisha | Variable valve mechanism |
| US11773758B2 (en) * | 2019-12-25 | 2023-10-03 | Kawasaki Jukogyo Kabushiki Kaisha | Variable valve mechanism |
| CN113931712A (en) * | 2021-09-30 | 2022-01-14 | 东风商用车有限公司 | Rocker arm assembly with variable valve lift |
| CN113931712B (en) * | 2021-09-30 | 2023-06-02 | 东风商用车有限公司 | Rocker arm assembly with variable valve lift |
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