CN108691596A - A kind of automobile engine variable valve lift control system - Google Patents
A kind of automobile engine variable valve lift control system Download PDFInfo
- Publication number
- CN108691596A CN108691596A CN201810711256.1A CN201810711256A CN108691596A CN 108691596 A CN108691596 A CN 108691596A CN 201810711256 A CN201810711256 A CN 201810711256A CN 108691596 A CN108691596 A CN 108691596A
- Authority
- CN
- China
- Prior art keywords
- gear
- holder
- valve
- circular hole
- cover board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- F01L1/34—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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention belongs to technical field of engines, and in particular to a kind of engine variable valve lift control system overcomes the shortcomings that valve stroke in the prior art fixes or cannot flexibly change valve stroke.Mechanism includes control shaft and its gear train assembly, eccentric wheel-displacement block system and plunger return system;Wherein control shaft is located above camshaft and is connect by gear with axle sleeve a, b, top surface is connect with cam slide on plunger, bottom surface and spring b connections and between top surface on valve across hydraulic oil, eccentric disc a, b drive displacement block on axle sleeve a, b moves up and down, to change the relative position of the oil duct in displaced block and plunger bottom surface, when plunger wall surface blocks oil duct completely, hydraulic oil in displaced block cavity can not release to drive valve, can pass through the Level Change valve stroke of hydraulic pressure oil column in control cavity.Valve stroke continuous variable can be achieved in the present invention;The hydraulic oil of driving valve can realize reuse, not need oil return system.
Description
Technical field
The invention belongs to technical field of engines, and in particular to a kind of automobile engine variable valve lift control system.
Background technology
As environment and energy problem become increasingly conspicuous, emission regulation is increasingly strict, and the energy-saving and emission-reduction gesture of automobile engine exists
It must go.For traditional automobile engine since mechanical structure is fixed, the valve stroke in its operation process is changeless, gas
Door lift is a kind of compromise proposal tested under variant operating mode by engine, cannot necessarily take into account each operating mode simultaneously
It is required that being extremely difficult to real optimal valve lift, it is clear that this disadvantage has prevented it from meeting at this stage to engine high-efficiency
Rate, low oil consumption, low emission general requirement.Therefore, in order to meet valve stroke demand different under different operating modes, raising is started
Machine economy and dynamic property reduce discharge, need to use changeable air valve technology.Changeable air valve technology can be according to engine conditions
The continuous variable of valve stroke is realized in variation.
Invention content
It is an object of the invention to overcome available engine valve stroke constant or cannot flexibly change lacking for valve stroke
Point provides a kind of simple and reliable for structure and can flexibly control valve stroke, realizes the engine variable of valve stroke continuous variable
Valve lift control system.
A kind of automobile engine variable valve lift control system of the present invention by cylinder cap 1, spring a2, displaced block 3,
Spring b4, eccentric disc 5, gear a6, axle sleeve a7, snap ring a8, holder a9, cover board a10, camshaft 11, gear b12, cover board b13,
Control shaft 14, holder b15, valve chamber cover 16, holder c17, gear c18, cover board c19, gear d20, axle sleeve b21, cam 22,
Snap ring b23, cover board d24, holder d25, plunger 26, eccentric disc b27, spring c28, valve 29 form.
It being placed on cylinder cap 1 it is characterized in that the displaced block 3 is outstanding, spring a2 is placed between displaced block 3 and cylinder cap 1,
One end is connected with 1 upper surface of cylinder cap, and the other end is placed in the spring installation annular groove 301 of displaced block 3.
The eccentric disc 5 and gear a6 is fixed in the outer surfaces axle sleeve a7, and gear d20 and eccentric disc b27 are fixed in axle sleeve
The outer surfaces b21, axle sleeve a7 and axle sleeve b21 are set on camshaft 11, and clearance fit therewith, and axle sleeve a7 is by 22 He of cam
Snap ring a8 limits, axle sleeve b21 are limited by cam 22 and snap ring b23.
The gear a6 and gear d20 is engaged with gear b12 and gear c18 respectively, eccentric disc 5 and eccentric disc b27 with
3 upper surface slide of displaced block is connected;Holder a9 and the one end holder d25 are fixed on cylinder cap 1, the other end respectively with cover board a10 and
Cover board d24 is connected by bolt.
The camshaft 11 is placed between holder a9 and cover board a10 and holder d25 and cover board d24, and clearance fit.
The gear b12 and gear c18 is fixed in 14 outer surface of control shaft, and cover board b13 and cover board c19 pass through spiral shell respectively
Bolt connects with holder b15 and holder c17, and holder b15 and holder c17 are also fixed in by bolt on valve chamber cover 16;Control
Axis 14 is placed between cover board b13 and holder b15 and cover board c19 and holder c17, and there are certain intervals.
The cam 22 is fixed in 11 outer surface of camshaft, and 26 one end of plunger is connected with the sliding of cam 22, and the other end is stretched
Enter in the circular hole a303 that displaced block 3 opens up, and be connected with spring b4, spring b4 is equally placed in circular hole a303.
The displaced block 3 be equipped with spring installation annular groove 301, boss 302, circular hole a303, guide surface 304, oil duct 305,
Circular hole b306, wherein, the sliding of circular hole a303 and plunger 26 be connected, circular hole b306 is slided with 29 top of valve to be connected, circular hole a303
It is communicated with circular hole b306;Boss 302 is placed in the top of displaced block 3, and guide surface 304 is placed in 302 both sides of boss, guide surface 304 with partially
Cartridge a5 is connected with eccentric disc b27 slidings;Oil duct 305 and circular hole a303, circular hole b306 and plunger 26 and 29 top of valve surround
Cavity communicate;Meanwhile circular hole a303, circular hole b306 and spring installation 301 three's axial line of annular groove overlap;When oil duct 305 away from
When top surface distance is minimum on cylinder cap 1, minimum valve stroke may be implemented, when oil duct 305 is maximum away from top surface distance on cylinder cap 1
When, maximum valve stroke may be implemented.
The course of work of apparatus of the present invention is as follows:
Engine work when, camshaft 11 engine crankshaft drive under rotate, cam 22 with camshaft 11 rotation
And rotate, when 22 high spot of cam turns to driving 26 top of plunger, overcome the elastic force of spring b4 that plunger 26 is driven to transport downwards
It is dynamic;When plunger 26 is not displaced downwardly to oil duct 305 and 305 wall surface hole of oil duct is not covered completely, due to oil duct 305 and circular hole
The cavity that a303, circular hole b306 and plunger 26 and 29 top of valve surround communicates, promotion meeting of the hydraulic oil through plunger 26 in cavity
It is discharged from oil duct 305, hydraulic fluid pressure is relatively low in 29 tip cavity of valve at this time, cannot overcome the pretightning force of spring c28, valve
29 are closed;When plunger 26 continues to move downward, and 305 wall surface hole of oil duct is covered completely, due to empty intraluminal fluid
Pressure oil cannot be then exhausted from, and plunger 26 continues to move downward the pressure that can increase hydraulic oil in cavity, and hydraulic oil is incompressible, at this time
Rigid force transfer element, which can be regarded, makes valve 29 that spring c28 elastic force be overcome to move downward, and carries out the process of valve opening;When cam 22
When tip turns to 26 top of plunger, engine reaches the maximum valve lift of current state;Camshaft 11 is rotated further, cam
After 22 tips turn over 26 top of plunger, valve 29 starts to move upwards under the effect of spring c28 elastic force, starts to fall after rise.Work as plunger
When 26, which go upward to wall surface, to cover in 305 wall surface hole of oil duct completely, outer liquid pressure oil supplements hydraulic pressure into cavity from oil duct 305
Oil keeps being full of hydraulic oil in cavity always.
When engine needs to adjust valve stroke, control shaft 14 rotates, and drives affixed gear b12, gear on it
C18 is rotated, and gear b12, gear c18 drive the gear a6 being engaged with, gear d20 rotations, gear a6, gear d20 and bias
Disk a5, eccentric disc b27 are fixed on axle sleeve a7, axle sleeve b27, and axle sleeve a7, axle sleeve b27 are in gear a6 and gear d20 effects at this time
Lower opposing cam axis 11 rotates, eccentric disc a5 and eccentric disc b27 drive displacements block 3, displaced block 3 under the action of spring a2 always
With eccentric disc a5 and eccentric disc b27 sliding contacts, while guide surface 304 and eccentric disc sliding contact, displaced block 3 is with eccentric disc
It drives and changes the relative position with cylinder cap 1, realize the change of 305 height of oil duct, plunger 26 is by 305 wall surface hole of oil duct at this time
Capping needs the displacement moved to be changed completely, and can control plunger 26 will seal up for safekeeping behind 305 wall surface hole of oil duct completely capping
The height of hydraulic oil oil column in cavity, to realize increasing or decreasing for 26 real work stroke of plunger.When need increase valve
When lift, it can be moved up with command displacement block, raise the height of oil duct 305, make 26 wall surface of plunger as early as possible by the wall surface hole of oil duct 305
Capping completely increases the oil column height of the hydraulic oil in cavity, the impulse stroke of plunger 26 is made to increase, and realizes and increases valve stroke
Purpose;It when needing to reduce valve stroke, can be moved down with command displacement block, reduce the height of oil duct 305, make plunger 26 will
The wall surface hole of oil duct 305 is covered completely when being in direct contact valve 29, the oil column height of the hydraulic oil in cavity is reduced, makes plunger
26 impulse stroke reduces, and realizes the purpose for reducing valve stroke, realizes the control to valve stroke continuous variable.
Pass through the actual bit that the rotational angle of control shaft 14 can adjust eccentric disc a5, eccentric disc b27 is contacted with displaced block 3
It sets, changes the The hydraulic oil that can be used for driving valve to control oil duct 305 with respect to the height of cylinder cap 1, when oil duct 305 reaches
When maximum height, 26 wall surface of plunger is maximum by the oil column height of the hydraulic oil in cavity behind the wall surface hole of oil duct 305 completely capping,
26 impulse stroke of plunger is maximum, and maximum valve stroke may be implemented;When oil duct 305 reaches minimum constructive height, 26 wall surface of plunger
The oil column height of hydraulic oil in cavity behind the wall surface hole of oil duct 305 completely capping is minimum, and 26 impulse stroke of plunger is minimum, can
To realize minimum valve stroke.
Compared with prior art the beneficial effects of the present invention are:
1. variable valve lift control system provided by the invention can realize that the continuous variable of valve stroke, control are flexible;
2. variable valve lift control system provided by the invention can take into account performance under Different Work Condition of Engine, optimization is started
The machine course of work;
3. the volumetric efficiency of engine can be improved in variable valve lift control system provided by the invention, effectively improves and start
Mechanomotive force and economy;
4. variable valve lift control system provided by the invention can realize the reuse of hydraulic oil, oil return system is not needed
System.
Description of the drawings
Fig. 1 is the structural schematic diagram of engine variable valve lift control system.
Fig. 2 is the sectional view along A-A of Fig. 1.
Fig. 3 is the full sectional view of displaced block.
Fig. 4 is the vertical view of displaced block.
Fig. 5 is the right side schematic view of displaced block.
System structure diagram when Fig. 6 is valve maximum lift.
In figure:1. cylinder cap, 2. spring a, 3. displaced blocks, 4. spring b, 5. eccentric disc a, 6. gear a, 7. axle sleeve a, 8. snap rings
A, 9. holder a, 10. cover board a, 11. camshafts, 12. gear b, 13. cover board b, 14. control shafts, 15. holder b, 16. valve covers
Lid, 17. holder c, 18. gear c, 19. cover board c, 20. gear d, 21. axle sleeve b, 22. cams, 23. snap ring b, 24. cover board d, 25.
Holder d, 26. plungers, 27. eccentric disc b, 28. spring c, 29. valves
Specific implementation mode
The present invention is described in detail with reference to technical solution and attached drawing.
With reference to attached drawing 1,2:
The present invention is by cylinder cap 1, spring a2, displaced block 3, spring b4, eccentric disc 5, gear a6, axle sleeve a7, snap ring a8, holder
A9, cover board a10, camshaft 11, gear b12, cover board b13, control shaft 14, holder b15, valve chamber cover 16, holder c17, tooth
Take turns c18, cover board c19, gear d20, axle sleeve b21, cam 22, snap ring b23, cover board d24, holder d25, plunger 26, eccentric disc
B27, spring c28, valve 29 form.
With reference to attached drawing 1,2,3,6:
The displaced block 3 is outstanding to be placed on cylinder cap 1, and spring a2 is placed between displaced block 3 and cylinder cap 1, one end and cylinder cap 1
Upper surface is connected, and the other end is placed in the spring installation annular groove 301 of displaced block 3.
The eccentric disc 5 and gear a6 is fixed in the outer surfaces axle sleeve a7, and gear d20 and eccentric disc b27 are fixed in axle sleeve
The outer surfaces b21, axle sleeve a7 and axle sleeve b21 are set on camshaft 11, and clearance fit therewith.
The gear a6 and gear d20 is engaged with gear b12 and gear c18 respectively, eccentric disc 5 and eccentric disc b27 with
3 upper surface slide of displaced block is connected;Holder a9 and the one end holder d25 are fixed on cylinder cap 1, the other end respectively with cover board a10 and
Cover board d24 is connected by bolt.
The camshaft 11 is placed between holder a9 and cover board a10 and holder d25 and cover board d24, and clearance fit.
The gear b12 and gear c18 is fixed in 14 outer surface of control shaft, and cover board b13 and cover board c19 pass through spiral shell respectively
Bolt connects with holder b15 and holder c17, and holder b15 and holder c17 are also fixed in by bolt on valve chamber cover 16;Control
Axis 14 is placed between cover board b13 and holder b15 and cover board c19 and holder c17, and there are certain intervals.
The cam 22 is fixed in 11 outer surface of camshaft, and 26 one end of plunger is connected with the sliding of cam 22, and the other end is stretched
Enter in the circular hole a303 that displaced block 3 opens up, and be connected with spring b4, spring b4 is equally placed in circular hole a303.
With reference to attached drawing 3,4,5:
The displaced block 3 be equipped with spring installation annular groove 301, boss 302, circular hole a303, guide surface 304, oil duct 305,
Circular hole b306, wherein, the sliding of circular hole a303 and plunger 26 be connected, circular hole b306 is slided with 29 top of valve to be connected, circular hole a303
It is communicated with circular hole b306;
The boss 302 is placed in 3 top of displaced block, and guide surface 304 is placed in 302 both sides of boss, guide surface 304 and bias
Disk a5 is connected with eccentric disc b27 slidings;Oil duct 305 is surrounded with circular hole a303, circular hole b306 and plunger 26 and 29 top of valve
Cavity communicates;Meanwhile circular hole a303, circular hole b306 and spring installation 301 three's axial line of annular groove overlap.
In conjunction with each component of apparatus of the present invention and its installation site relationship, the skill of the engine variable valve lift control system
Art scheme is as follows:
Engine work when, camshaft 11 engine crankshaft drive under rotate, cam 22 with camshaft 11 rotation
And rotate, when 22 high spot of cam turns to driving 26 top of plunger, overcome the elastic force of spring b4 that plunger 26 is driven to transport downwards
It is dynamic;When plunger 26 is not displaced downwardly to oil duct 305 and 305 wall surface hole of oil duct is not covered completely, due to oil duct 305 and circular hole
The cavity that a303, circular hole b306 and plunger 26 and 29 top of valve surround communicates, promotion meeting of the hydraulic oil through plunger 26 in cavity
It is discharged from oil duct 305, hydraulic fluid pressure is relatively low in 29 tip cavity of valve at this time, cannot overcome the pretightning force of spring c28, valve
29 are closed;When plunger 26 continues to move downward, and 305 wall surface hole of oil duct is covered completely, due to empty intraluminal fluid
Pressure oil cannot be then exhausted from, and plunger 26 continues to move downward the pressure that can increase hydraulic oil in cavity, and hydraulic oil is incompressible, at this time
Rigid force transfer element, which can be regarded, makes valve 29 that spring c28 elastic force be overcome to move downward, and carries out the process of valve opening;When cam 22
When tip turns to 26 top of plunger, engine reaches the maximum valve lift of current state;Camshaft 11 is rotated further, cam
After 22 tips turn over 26 top of plunger, valve 29 starts to move upwards under the effect of spring c28 elastic force, starts to fall after rise.Work as plunger
When 26, which go upward to wall surface, to cover in 305 wall surface hole of oil duct completely, outer liquid pressure oil supplements hydraulic pressure into cavity from oil duct 305
Oil keeps being full of hydraulic oil in cavity always.
When engine needs to adjust valve stroke, control shaft 14 rotates, and drives affixed gear b12, gear on it
C18 is rotated, and gear b12, gear c18 drive the gear a6 being engaged with, gear d20 rotations, gear a6, gear d20 and bias
Disk a5, eccentric disc b27 are fixed on axle sleeve a7, axle sleeve b27, and axle sleeve a7, axle sleeve b27 are in gear a6 and gear d20 effects at this time
Lower opposing cam axis 11 rotates, eccentric disc a5 and eccentric disc b27 drive displacements block 3, displaced block 3 under the action of spring a2 always
With eccentric disc a5 and eccentric disc b27 sliding contacts, while guide surface 304 and eccentric disc sliding contact, displaced block 3 is with eccentric disc
It drives and changes the relative position with cylinder cap 1, realize the change of 305 height of oil duct, plunger 26 is by 305 wall surface hole of oil duct at this time
Capping needs the displacement moved to be changed completely, and can control plunger 26 will seal up for safekeeping behind 305 wall surface hole of oil duct completely capping
The height of hydraulic oil oil column in cavity, to realize increasing or decreasing for 26 real work stroke of plunger.When need increase valve
When lift, it can be moved up with command displacement block, raise the height of oil duct 305, make 26 wall surface of plunger as early as possible by the wall surface hole of oil duct 305
Capping completely increases the oil column height of the hydraulic oil in cavity, the impulse stroke of plunger 26 is made to increase, and realizes and increases valve stroke
Purpose;It when needing to reduce valve stroke, can be moved down with command displacement block, reduce the height of oil duct 305, make plunger 26 will
The wall surface hole of oil duct 305 is covered completely when being in direct contact valve 29, the oil column height of the hydraulic oil in cavity is reduced, makes plunger
26 impulse stroke reduces, and realizes the purpose for reducing valve stroke, realizes the control to valve stroke continuous variable.
Pass through the actual bit that the rotational angle of control shaft 14 can adjust eccentric disc a5, eccentric disc b27 is contacted with displaced block 3
It sets, changes the The hydraulic oil that can be used for driving valve to control oil duct 305 with respect to the height of cylinder cap 1, when oil duct 305 reaches
When maximum height, 26 wall surface of plunger is maximum by the oil column height of the hydraulic oil in cavity behind the wall surface hole of oil duct 305 completely capping,
26 impulse stroke of plunger is maximum, and maximum valve stroke may be implemented;When oil duct 305 reaches minimum constructive height, 26 wall surface of plunger
The oil column height of hydraulic oil in cavity behind the wall surface hole of oil duct 305 completely capping is minimum, and 26 impulse stroke of plunger is minimum, can
To realize minimum valve stroke.
Claims (2)
1. a kind of automobile engine variable valve lift control system, which is characterized in that including cylinder cap (1), spring a (2), displacement
Block (3), spring b (4), eccentric disc a (5), gear a (6), axle sleeve a (7), snap ring a (8), holder a (9), cover board a (10), cam
Axis (11), gear b (12), cover board b (13), control shaft (14), holder b (15), valve chamber cover (16), holder c (17), gear
C (18), cover board c (19), gear d (20), axle sleeve b (21), cam (22), snap ring b (23), cover board d (24), holder d (25), column
Fill in (26), eccentric disc b (27), spring c (28), valve (29);Wherein displaced block (3) is outstanding is placed on cylinder cap (1), and spring a (2) is set
Between displaced block (3) and cylinder cap (1), one end is in contact with cylinder cap (1) upper surface, and the other end is placed in the bullet of displaced block (3)
Spring is installed in annular groove (301);Eccentric disc (5) and gear a (6) are fixed in axle sleeve a (7) outer surface, gear d (20) and eccentric disc b
(27) it is fixed in axle sleeve b (21) outer surface, axle sleeve a (7) and axle sleeve b (21) are sleeved on camshaft (11), and gap is matched therewith
It closes, axle sleeve a (7) is limited by cam (22) and snap ring a (8), and axle sleeve b (21) is limited by cam (22) and snap ring b (23);Gear a
(6) it is also engaged respectively with gear b (12) and gear c (18) with gear d (20), eccentric disc (5) and eccentric disc b (27) are also and displacement
Block (3) upper surface slide is connected;Holder a (9) and holder d (25) one end are fixed on cylinder cap (1), the other end respectively with cover board a
(10) it is connected by bolt with cover board d (24);Camshaft (11) is placed in holder a (9) and cover board a (10) and holder d (25) and lid
Between plate d (24), and clearance fit;Gear b (12) and gear c (18) is fixed in control shaft (14) outer surface, cover board b (13) and
Cover board c (19) is connected by bolt with holder b (15) and holder c (17) respectively, and holder b (15) and holder c (17) also pass through spiral shell
Bolt is fixed on valve chamber cover (16);Control shaft (14) is placed in cover board b (13) and holder b (15) and cover board c (19) and holder c
(17) between, and clearance fit;Cam (22) is fixed in camshaft (11) outer surface, and plunger (26) one end is slided with cam (22)
It is connected, the other end stretches into the circular hole a (303) that displaced block (3) opens up, and is connected with spring b (4), and spring b (4) is equally placed in
In circular hole a (303).
2. a kind of automobile engine variable valve lift control system as described in claim 1, it is characterised in that displaced block (3)
Equipped with spring installation annular groove (301), boss (302), circular hole a (303), guide surface (304), oil duct (305), circular hole b (306);
Wherein circular hole a (303) is connected with plunger (26) sliding, and circular hole b (306) is connected with the sliding of valve (29) top, circular hole a (303)
It is communicated with circular hole b (306);Boss (302) is placed at the top of displaced block (3), and guide surface (304) is placed in boss (302) both sides, is oriented to
Face (304) is also connected with eccentric disc a (5) and eccentric disc b (27) slidings;Oil duct (305) and circular hole a (303), circular hole b (306) and
The cavity that plunger (26) and valve (29) top surround communicates;Meanwhile circular hole a (303), circular hole b (306) and spring install annular groove
(301) three's axial line overlaps;When oil duct (305) is away from distance minimum in top surface on cylinder cap (1), minimum valve liter may be implemented
Maximum valve stroke may be implemented when oil duct (305) is away from distance maximum in top surface on cylinder cap (1) in journey.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810711256.1A CN108691596B (en) | 2018-07-03 | 2018-07-03 | Variable valve lift control system of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810711256.1A CN108691596B (en) | 2018-07-03 | 2018-07-03 | Variable valve lift control system of automobile engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108691596A true CN108691596A (en) | 2018-10-23 |
| CN108691596B CN108691596B (en) | 2023-10-03 |
Family
ID=63850258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810711256.1A Active CN108691596B (en) | 2018-07-03 | 2018-07-03 | Variable valve lift control system of automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108691596B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339898A (en) * | 2018-10-31 | 2019-02-15 | 吉林大学 | A kind of engine rod-pulling type variable valve gear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030127063A1 (en) * | 2002-01-10 | 2003-07-10 | Yushu Wang | Continually variable valve timing, lift, and duration for internal combustion engine |
| CN102278162A (en) * | 2011-05-24 | 2011-12-14 | 奇瑞汽车股份有限公司 | Variable valve lift mechanism |
| CN102383892A (en) * | 2011-09-28 | 2012-03-21 | 上海交通大学 | Variable air valve lift mechanism of internal combustion engine |
| CN102705027A (en) * | 2012-06-11 | 2012-10-03 | 吉林大学 | Valve stroke variable adjusting system |
| CN105781656A (en) * | 2016-04-23 | 2016-07-20 | 吉林大学 | Mechanical adjusting device of hydraulic drive type fully-variable valve |
-
2018
- 2018-07-03 CN CN201810711256.1A patent/CN108691596B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030127063A1 (en) * | 2002-01-10 | 2003-07-10 | Yushu Wang | Continually variable valve timing, lift, and duration for internal combustion engine |
| CN102278162A (en) * | 2011-05-24 | 2011-12-14 | 奇瑞汽车股份有限公司 | Variable valve lift mechanism |
| CN102383892A (en) * | 2011-09-28 | 2012-03-21 | 上海交通大学 | Variable air valve lift mechanism of internal combustion engine |
| CN102705027A (en) * | 2012-06-11 | 2012-10-03 | 吉林大学 | Valve stroke variable adjusting system |
| CN105781656A (en) * | 2016-04-23 | 2016-07-20 | 吉林大学 | Mechanical adjusting device of hydraulic drive type fully-variable valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339898A (en) * | 2018-10-31 | 2019-02-15 | 吉林大学 | A kind of engine rod-pulling type variable valve gear |
| CN109339898B (en) * | 2018-10-31 | 2024-03-22 | 吉林大学 | Pull rod type variable valve device of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108691596B (en) | 2023-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107060937B (en) | Full hydraulic variable valve mechanism valve stroke control device and internal combustion engine | |
| CN100400805C (en) | Timing and lift continuous changeable device for engine air valve | |
| CN105041405A (en) | Lubricating oil conveying device of internal combustion engine with four cylinders surrounding shaft | |
| CN100410513C (en) | Valve timing continuously variable internal combustion engine valve system | |
| CN207111192U (en) | A kind of cartridge type air inlet and outlet device and engine cylinder head system | |
| CN102410194A (en) | Flow regulating device of plunger reciprocating pump | |
| CN102817659A (en) | Crank cam valve actuating mechanism | |
| CN203939575U (en) | Double-crankshaft variable compression ratio engine | |
| CN108691596A (en) | A kind of automobile engine variable valve lift control system | |
| CN106368754A (en) | Intake valve device, air distribution system and air distribution phase switching method | |
| CN106593569B (en) | A kind of Mechanical course valve actuating gear and control method | |
| CN208380651U (en) | A kind of automobile engine variable valve lift control system | |
| CN107355276B (en) | A kind of variable valve actuator for air of high hydraulic-driven | |
| CN106939808B (en) | Exhaust valve device with hydraulic rotary valve device applied to low-speed diesel engine | |
| CN112096477B (en) | Mechanism for controlling opening and closing of valve, variable valve apparatus and method | |
| CN203822474U (en) | Energy-saving engine with variable compression ratio | |
| CN203867646U (en) | Hydraulic tappet with changeable lift range | |
| CN206329650U (en) | The total power force aid clutch of special car engine | |
| CN202348635U (en) | Flow regulation device for plunger reciprocation pump | |
| CN107762587A (en) | Executing agency, variable air valve lift apparatus, engine and automobile | |
| CN103184910B (en) | Continuous variable air valve lift apparatus | |
| CN202300649U (en) | Disc piston internal-combustion engine | |
| CN203822401U (en) | Stepless variable gas distribution timing mechanism | |
| CN221032900U (en) | Split type automatically controlled monoblock pump | |
| CN204877674U (en) | Four jars enclose one internal -combustion engine organism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |