CN104712395A - Drive device for automobile engine variable valve lift - Google Patents
Drive device for automobile engine variable valve lift Download PDFInfo
- Publication number
- CN104712395A CN104712395A CN201510119778.9A CN201510119778A CN104712395A CN 104712395 A CN104712395 A CN 104712395A CN 201510119778 A CN201510119778 A CN 201510119778A CN 104712395 A CN104712395 A CN 104712395A
- Authority
- CN
- China
- Prior art keywords
- valve
- intermediate rockers
- rocker arm
- eccentric shaft
- drive unit
- 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
- 238000000034 method Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Abstract
The invention belongs to the technical field of automobile engines, and particularly relates to a drive device for the automobile engine variable valve lift. The drive device comprises a valve arranged on an air cylinder cover, one end of a valve rocker arm is connected with a rod end of the valve, and the other end of the valve rocker arm is further connected with a valve tappet. The device further comprises a middle rocker arm, the lower end of the middle rocker arm is matched with the middle section of the valve rocker arm in an abutting mode, the upper end of the middle rocker arm abuts against a curved guide rail face of an upper support, the left side and the right side of the middle rocker arm abut against an eccentric shaft and a camshaft respectively, the middle rocker arm is further connected with a spring, the spring supplies elastic force so as to drive the middle rocker arm to abut against the camshaft, the swing axis of the middle rocker arm, the axis of the camshaft and the axis of the eccentric shaft are arranged in parallel, the eccentric shaft comprises a rotary shaft and an eccentric wheel arranged on the rotary shaft, a turbine disc is arranged in the middle position of the rotary shaft of the eccentric shaft, the turbine disc and a worm are matched to form a worm wheel and worm mechanism, and a drive mechanism drives the worm to rotate. The opening and closing of the valve and the lift can be adjusted only through the middle rocker arm and the support of four points, and the drive device is simple in structure and high in valve lift adjustment accuracy.
Description
Technical field
The invention belongs to and relate to technical field of automobile engine, be specially a kind of drive unit of motor car engine lift range variable.
Background technique
At present, most piston type automobile motor all adopts the throttle style of closure to control the air charge entering cylinder, the air charge entering intake manifold is controlled by the throttling action of closure, thus control the air charge of the valve entering motor, and then control the air charge entering cylinder.But the mechanical parameter of this kind of closure sets, when engine operation condition is complicated, the air charge demand in cylinder has larger difference along with the difference of engine operation condition.For petrol engine, when load is less, motor only needs less air charge, and be suppress unnecessary air to enter in cylinder, need to utilize throttle valve, utilize the throttling action of closure, can pumping loss be caused, add the oil consumption of motor.
For the problems referred to above, the patent No. is: 200910116666.2 disclose a kind of being called: the valve lift control mechanism that can realize step-less adjustment, mechanism comprises camshaft 1, link arm 4, eccentric shaft 5, combination rocking arm 7, coupling shaft 18, torque spring 3, in said mechanism, link arm is set on eccentric shaft, the other end of link arm is set on coupling shaft 18, combination rocking arm 7 comprise with camshaft against needle bearing 14, the combination lower end of rocking arm and finger-type rocking arm 10 against, the rotation of camshaft 1, combination rocking arm 7 can be made to present the attitude of swing, the swing of interlock finger-type rocking arm 10, and then realize the lifting folding of valve, the rotation of eccentric shaft is driven by driving mechanism, thus make link arm present the attitude of swing, the swing of link arm makes coupling shaft present the attitude of swing, and then the attitude of adjustable combination rocking arm, reach the object that valve lift is controlled.The core component of above-mentioned control mechanism is the swing by coupling shaft, thus reaches the object to combination rocking arm attitude regulation, and this complex structure, coupling shaft is larger in in-engine installation difficulty.
Summary of the invention
The object of the invention is to: the drive unit that the simple motor car engine lift range variable of a kind of structure is provided, accurately can realize the control to amounts of engine valve lift.
For achieving the above object, the technical solution used in the present invention is: a kind of drive unit of motor car engine lift range variable, comprise the valve be arranged in cylinder head, one end of valve rocker is connected with the rod end of valve, the other end of valve rocker is also connected with valve tappet, device also comprises intermediate rockers, the lower end of intermediate rockers forms to compress with valve rocker stage casing and coordinates, the upper end of intermediate rockers and the guide surface of upper bracket against, the left and right sides of intermediate rockers respectively with eccentric shaft and camshaft against, the axle core of the swing axis core of intermediate rockers and camshaft and eccentric shaft is arranged parallel to each other, intermediate rockers is also connected with spring, described spring provide elastic force order about intermediate rockers to camshaft against, described eccentric shaft comprises the eccentric wheel that rotating shaft and rotating shaft are arranged, the rotating shaft middle position of eccentric shaft is provided with the turbine disk, the turbine disk coordinates with worm screw and forms worm-and-wheel gear, driving mechanism drives the rotation of worm screw.
Compared with prior art, the technique effect that the present invention exists is: utilize an intermediate rockers, by in the left and right of rocking arm against arranging eccentric shaft and camshaft, the lower end of intermediate rockers and valve rocker against, the upper end of intermediate rockers and upper bracket against, in the process of cam axle, drive intermediate rockers within the scope of above-mentioned four parts restriction, present the attitude of swing, and then the object realized valve opening and closing, by the rotation regulating action of eccentric shaft, the attitude of intermediate rockers can be changed, and then the adjustment reached valve lift distance, by the centre driving the turbine disk of eccentric shaft to be arranged on eccentric shaft, in the process that driving mechanism actuation gear rotates, the moment of rotation being dispensed to the eccentric shaft of turbine disk both sides is even and equal, the degree of accuracy of the amplitude of fluctuation regulating each intermediate rockers in motor can be guaranteed like this, and then the adjustment guaranteeing valve lift distance, above-mentioned can realize the adjustment to valve folding and lift by the support of an intermediate rockers and four points, apparatus structure is simple and degree of accuracy that is adjustment valve lift is high.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is assembled to cylinder and covers.
Fig. 2 is plan view of the present invention;
Fig. 3 is axis side view of the present invention;
Fig. 4 is the overall structure schematic diagram of driving mechanism in the present invention;
Fig. 5 is that in the present invention, eccentric shaft is mounted to the structural representation on bearing;
Fig. 6 is the structural representation of the mounting bracket in the present invention on bearing.
Embodiment
By reference to the accompanying drawings 1 to 6, the present invention will be further described in detail:
Composition graphs 3, a kind of drive unit of motor car engine lift range variable, comprise the valve 20 be arranged in cylinder head 10, one end of valve rocker 30 is connected with the rod end of valve 20, the other end of valve rocker 30 is also connected with valve tappet, it is characterized in that: device also comprises intermediate rockers 40, the lower end of intermediate rockers 40 forms to compress with valve rocker 30 stage casing and coordinates, the upper end of intermediate rockers 40 and the guide surface of upper bracket 80 against, the left and right sides of intermediate rockers 40 respectively with eccentric shaft 60 and camshaft 50 against, intermediate rockers 40 is also connected with spring 70, described spring 70 provide elastic force order about intermediate rockers 40 to camshaft 50 against, the swing axis core of intermediate rockers 40 and the axle core of camshaft 50 and eccentric shaft 60 arranged parallel to each other, described eccentric shaft 60 comprises the eccentric wheel 63 that rotating shaft 62 and rotating shaft 62 are arranged, rotating shaft 62 middle position of eccentric shaft 60 is provided with the turbine disk 61, the turbine disk 61 coordinates with worm screw 92 and forms worm-and-wheel gear, driving mechanism drives the rotation of worm screw 92.
Abandon the driving mechanism that existing middle structure is comparatively complicated, utilize an intermediate rockers 40, by in the left and right of intermediate rockers 40 against arranging eccentric shaft 60 and camshaft 50, the lower end of intermediate rockers 40 and valve rocker 30 against, the upper end of intermediate rockers 40 and upper bracket 80 against, in the process that camshaft 50 rotates, drive intermediate rockers 40 within the scope of above-mentioned four parts restriction, present the attitude of swing, and then the object realized valve 20 opening and closing, by the rotation regulating action of eccentric shaft 60, the attitude of intermediate rockers 40 can be changed, and then the adjustment reached valve 20 lift distance, by the centre driving the gear 61 of eccentric shaft 60 to be arranged on eccentric shaft 60, in the process that driving mechanism drives the turbine disk 61 to rotate, the moment of rotation being dispensed to the eccentric shaft 60 of the turbine disk 61 both sides is even and equal, conformity and the degree of accuracy of the amplitude of fluctuation regulating each intermediate rockers 40 in motor can be guaranteed like this, and then the adjustment guaranteeing valve 20 lift distance, above-mentioned can realize the adjustment to valve 20 folding and lift by the support of an intermediate rockers 40 and four points, apparatus structure is simple and degree of accuracy that is adjustment valve lift is high.
Composition graphs 3, described eccentric wheel 63 wheel face and intermediate rockers 40 against, rotating shaft 62 rotary type is arranged on bearing 90, described bearing 90 is provided with the axial limiting portion moved axially for limiting rotating shaft 62.Above-mentioned eccentric shaft 60 is actually and is made up of rotating shaft 62 and eccentric wheel 63, the turbine disk 61 is arranged on the middle position of rotating shaft 62, eccentric wheel 63 quantity of the turbine disk 61 both sides is equal and equidistantly distribute, the intermediate rockers 40 of each eccentric wheel 63 correspondence against, driving mechanism, in the process driving the turbine disk 61 to rotate, can guarantee that the moment of rotation being dispensed to each eccentric wheel 63 is equal; The turbine disk 61 can be prevented in the generation of the play phenomenon of its axis by the axial limiting portion arranged, thus guarantee the location of the axial direction of eccentric shaft 60, and then the stability that the eccentric wheel 63 of eccentric shaft 60 coordinates with intermediate rockers 40 and degree of accuracy can be guaranteed.
Further, the described turbine disk 61 is the fan-shaped turbine disk, and described bearing 90 is also provided with the circumferential limited part for limiting rotating shaft 62 rotation angle, this circumferential limited part forms spacing cooperation with two straight flanges of the fan-shaped turbine disk 61 respectively.Due to mechanism's loading characteristic, when the driving mechanism driving worm screw 92 to rotate lost efficacy, by being arranged on the mechanical position limitation on the turbine disk 61, prevented from, because mechanism's inertia or automatically controlled inefficacy cause eccentric shaft 60 to rotate through position, preventing the stuck of whole mechanism.
Particularly, described circumferential limited part is two pins 93 be arranged on bearing 90, and the shaft core line of described two pins 93 is parallel with the axial direction of eccentric shaft 60.
Two straight flanges of the described fan-shaped turbine disk 61 are respectively provided with arc notch 611, two arc notch 611 form spacing cooperation with two pins 93 respectively, by being arranged on coordinating of the arc notch 611 of the turbine disk 61 and the spacing pin 93 on bearing 90, what realize the rotation angle of eccentric shaft 60 is spacing.
Particularly, by reference to the accompanying drawings 4 and 6, described bearing 90 is fixedly installed in cylinder head 10, and bearing 90 is provided with the mounting bracket 94 for installing driving mechanism, described arc notch 91 is offered on mounting bracket 94.
By reference to the accompanying drawings 4, described driving mechanism is the motor 95 be arranged on mounting bracket 94, motor 95 housing is fixed on mounting bracket 94, and motor 95 rotating shaft is through the positioning hole 941 that mounting bracket 94 is arranged and rotating shaft is fixing with worm screw 92, and positioning hole 941 conforms to the aperture of the rotating shaft of motor 95.The installation to motor 95 is implemented by the positioning hole 941 on mounting bracket 94, the installation stability of motor 95 can be guaranteed, utilize the locating and monitoring 941 that mounting bracket 94 is arranged, the swing of motor 95 rotating shaft can be avoided, and then avoid the phenomenon of swing of worm screw 92, guarantee the stability that worm screw 92 coordinates with the turbine disk 61.
The upper end that described eccentric shaft 60 closes on intermediate rockers 40 is arranged, the upper end of intermediate rockers 40 is provided with the first ball 41, the eccentric wheel 63 of eccentric shaft 60 forms against coordinating with the first ball 41, camshaft 50 closes on the middle arranged beneath of intermediate rockers 40, the stage casing of intermediate rockers 40 is provided with the second ball 42, the cam of camshaft 50 and the second ball 42 against.
Described spring 70 is torsion spring, one end of torsion spring and the upper plate surface of upper bracket 80 against, on the left of the intermediate rockers 40 at the other end and eccentric shaft 60 place against.The elastic force of torsion spring drives the rotation of intermediate rockers 40, and makes the cam abutment of intermediate rockers 40 and camshaft 50.
Guide surface is arranged in the lower end of intermediate rockers 40, the 3rd ball 31 that the stage casing of this guide surface and valve rocker 30 is arranged against.The wobbling action of intermediate rockers 40 orders about the wobbling action of valve rocker 30, and then completes the switching motion to valve 20.
Claims (10)
1. the drive unit of a motor car engine lift range variable, comprise the valve (20) be arranged in cylinder head (10), one end of valve rocker (30) is connected with the rod end of valve (20), the other end of valve rocker (30) is also connected with valve tappet, it is characterized in that: device also comprises intermediate rockers (40), the lower end of intermediate rockers (40) forms to compress with valve rocker (30) stage casing and coordinates, the upper end of intermediate rockers (40) and the guide surface of upper bracket (80) against, the left and right sides of intermediate rockers (40) respectively with eccentric shaft (60) and camshaft (50) against, intermediate rockers (40) is also connected with spring (70), described spring (70) provide elastic force order about intermediate rockers (40) to camshaft (50) against, the swing axis core of intermediate rockers (40) and the axle core of camshaft (50) and eccentric shaft (60) arranged parallel to each other, described eccentric shaft (60) comprises rotating shaft (62) and the upper eccentric wheel (63) arranged of rotating shaft (62), rotating shaft (62) middle position of eccentric shaft (60) is provided with the turbine disk (61), the turbine disk (61) coordinates with worm screw (92) and forms worm-and-wheel gear, driving mechanism drives the rotation of worm screw (92).
2. the drive unit of motor car engine lift range variable according to claim 1, it is characterized in that: described eccentric wheel (63) wheel face and intermediate rockers (40) against, rotating shaft (62) rotary type is arranged on bearing (90), described bearing (90) is provided with the axial limiting portion moved axially for limiting rotating shaft (62).
3. the drive unit of motor car engine lift range variable according to claim 2, it is characterized in that: the described turbine disk (61) is the fan-shaped turbine disk, described bearing (90) is also provided with the circumferential limited part for limiting rotating shaft (62) rotation angle, this circumferential limited part forms spacing cooperation with two straight flanges of the fan-shaped turbine disk (61) respectively.
4. the drive unit of motor car engine lift range variable according to claim 3, it is characterized in that: described circumferential limited part is for being arranged on two pins (93) on bearing (90), and the shaft core line of described two pins (93) is parallel with the axial direction of eccentric shaft (60).
5. the drive unit of motor car engine lift range variable according to claim 4, it is characterized in that: two straight flanges of the described fan-shaped turbine disk (61) are respectively provided with arc notch (611), and two arc notch (611) form spacing cooperation with two pins (93) respectively.
6. the drive unit of motor car engine lift range variable according to claim 2, it is characterized in that: described bearing (90) is fixedly installed in cylinder head (10), bearing (90) is provided with the mounting bracket (94) for installing driving mechanism, mounting bracket (94) offers limit opening (91), the A/F of limit opening (91) conforms to the facewidth of the turbine disk (61).
7. the drive unit of motor car engine lift range variable according to claim 6, it is characterized in that: described driving mechanism is for being arranged on the motor (95) on mounting bracket (94), motor (95) housing is fixed on mounting bracket 94, motor (95) rotating shaft is through the upper positioning hole (941) that arranges of mounting bracket (94) and rotating shaft is fixing with worm screw (92), and positioning hole (941) conforms to the aperture of the rotating shaft of motor (95).
8. the drive unit of motor car engine lift range variable according to claim 1, it is characterized in that: the upper end that described eccentric shaft (60) closes on intermediate rockers (40) is arranged, the upper end of intermediate rockers (40) is provided with the first ball (41), the eccentric wheel (63) of eccentric shaft (60) forms against coordinating with the first ball (41), camshaft (50) closes on the middle arranged beneath of intermediate rockers (40), the stage casing of intermediate rockers (40) is provided with the second ball (42), the cam of camshaft (50) and the second ball (42) against.
9. the drive unit of automobile invention according to claim 1 and lift range variable, it is characterized in that: described spring (70) is torsion spring, the upper plate surface of one end of torsion spring and upper bracket (80) against, intermediate rockers (40) left side at the other end and eccentric shaft (60) place against.
10. the drive unit of motor car engine lift range variable according to claim 8, it is characterized in that: guide surface is arranged in the lower end of intermediate rockers (40), the 3rd ball (31) that the stage casing of this guide surface and valve rocker (30) is arranged against.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119778.9A CN104712395B (en) | 2015-03-18 | 2015-03-18 | The drive device of automobile engine lift range variable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119778.9A CN104712395B (en) | 2015-03-18 | 2015-03-18 | The drive device of automobile engine lift range variable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104712395A true CN104712395A (en) | 2015-06-17 |
| CN104712395B CN104712395B (en) | 2017-11-14 |
Family
ID=53412062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510119778.9A Active CN104712395B (en) | 2015-03-18 | 2015-03-18 | The drive device of automobile engine lift range variable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104712395B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956528A (en) * | 2016-10-18 | 2018-04-24 | 舍弗勒技术股份两合公司 | The intermediate lever of variable stigmatic opening transmission device |
| CN107956527A (en) * | 2016-10-18 | 2018-04-24 | 舍弗勒技术股份两合公司 | The intermediate push rod of variable valve driving apparatus |
| CN108639311A (en) * | 2018-07-10 | 2018-10-12 | 湖南鲲鹏智汇无人机技术有限公司 | Fly the limiting device of propeller before a kind of complete electric type VTOL fixed-wing unmanned plane |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7174887B2 (en) * | 2004-03-04 | 2007-02-13 | Toyota Jidosha Kabushiki Kaisha | Variable valve system |
| JP2009085133A (en) * | 2007-10-01 | 2009-04-23 | Denso Corp | Actuator of valve lift control device |
| CN101539042A (en) * | 2009-04-29 | 2009-09-23 | 奇瑞汽车股份有限公司 | Valve lift control mechanism capable of realizing stepless regulation |
| CN102140944A (en) * | 2011-03-16 | 2011-08-03 | 奇瑞汽车股份有限公司 | Eccentric shaft control system of complete-variable air valve lift mechanism |
| JP2012149609A (en) * | 2011-01-20 | 2012-08-09 | Denso Corp | Actuator of valve lift adjusting device |
| CN204082250U (en) * | 2014-06-06 | 2015-01-07 | 奇瑞汽车股份有限公司 | A kind of mechanical continuous variable valve lift driving device |
| CN204312150U (en) * | 2014-11-28 | 2015-05-06 | 长城汽车股份有限公司 | For the supporting base of distribution device, distribution device, motor and vehicle |
-
2015
- 2015-03-18 CN CN201510119778.9A patent/CN104712395B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7174887B2 (en) * | 2004-03-04 | 2007-02-13 | Toyota Jidosha Kabushiki Kaisha | Variable valve system |
| JP2009085133A (en) * | 2007-10-01 | 2009-04-23 | Denso Corp | Actuator of valve lift control device |
| CN101539042A (en) * | 2009-04-29 | 2009-09-23 | 奇瑞汽车股份有限公司 | Valve lift control mechanism capable of realizing stepless regulation |
| JP2012149609A (en) * | 2011-01-20 | 2012-08-09 | Denso Corp | Actuator of valve lift adjusting device |
| CN102140944A (en) * | 2011-03-16 | 2011-08-03 | 奇瑞汽车股份有限公司 | Eccentric shaft control system of complete-variable air valve lift mechanism |
| CN204082250U (en) * | 2014-06-06 | 2015-01-07 | 奇瑞汽车股份有限公司 | A kind of mechanical continuous variable valve lift driving device |
| CN204312150U (en) * | 2014-11-28 | 2015-05-06 | 长城汽车股份有限公司 | For the supporting base of distribution device, distribution device, motor and vehicle |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956528A (en) * | 2016-10-18 | 2018-04-24 | 舍弗勒技术股份两合公司 | The intermediate lever of variable stigmatic opening transmission device |
| CN107956527A (en) * | 2016-10-18 | 2018-04-24 | 舍弗勒技术股份两合公司 | The intermediate push rod of variable valve driving apparatus |
| CN107956527B (en) * | 2016-10-18 | 2022-02-25 | 舍弗勒技术股份两合公司 | Intermediate push rod of variable valve driving device |
| CN108639311A (en) * | 2018-07-10 | 2018-10-12 | 湖南鲲鹏智汇无人机技术有限公司 | Fly the limiting device of propeller before a kind of complete electric type VTOL fixed-wing unmanned plane |
| CN108639311B (en) * | 2018-07-10 | 2020-06-02 | 湖南鲲鹏智汇无人机技术有限公司 | Stop device of full-electric vertical take-off and landing fixed wing unmanned aerial vehicle front flying propeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104712395B (en) | 2017-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101539041B (en) | Novel stepless variable valve lift mechanism | |
| CN104712395A (en) | Drive device for automobile engine variable valve lift | |
| CN1667247A (en) | Adjusting mechanism and adjusting method of valve-lift amount of internal combustion engine | |
| CN1325771C (en) | Petrol engine variable valve timing device | |
| CN103147818B (en) | Drive device with variable valve lift, engine and vehicle | |
| CN101503973A (en) | Air valve lift adjustable engine valve actuating mechanism | |
| CN204591392U (en) | Variable air valve lift apparatus, motor and automobile | |
| US20140096729A1 (en) | Valve train and method for control time variation | |
| CN104420925A (en) | Continuously variable valve lift actuator of engine | |
| CN104234843B (en) | A kind of electric control valve and its control system | |
| JP2017166365A (en) | Variable valve gear of internal combustion engine | |
| CN102562207B (en) | The continuous variable valve timing of Independent adjustable joint and lift mechanisms | |
| JP4289193B2 (en) | Variable valve gear for engine | |
| JP4770874B2 (en) | Variable valve mechanism for internal combustion engine | |
| US20030213452A1 (en) | Rotary driven reciprocating mechanism and method | |
| CN103046978A (en) | Opposite-swing swing bar type full variable valve timing mechanism | |
| CN103925029B (en) | Variable valve lift driving device | |
| CN102926828B (en) | Full variable valve stroke mechanism | |
| CN204140210U (en) | electric control valve and control system thereof | |
| JP2008286145A (en) | Variable valve gear for internal combustion engine | |
| CN106545379A (en) | A kind of valve stroke continuous changeable device | |
| CN103216291B (en) | For motor valve lift apparatus and there is its motor, vehicle | |
| CN103089364A (en) | Actuating mechanism of variable valve stroke drive device for engine | |
| CN103147814A (en) | Tappet mechanism for variable valve lift driving device of engine | |
| CN103925035B (en) | A kind of swing arm regulates frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |