CN110645063A - Valve lift device and vehicle with same - Google Patents
Valve lift device and vehicle with same Download PDFInfo
- Publication number
- CN110645063A CN110645063A CN201910904254.9A CN201910904254A CN110645063A CN 110645063 A CN110645063 A CN 110645063A CN 201910904254 A CN201910904254 A CN 201910904254A CN 110645063 A CN110645063 A CN 110645063A
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- China
- Prior art keywords
- rocker arm
- valve
- driving
- profile
- valve lift
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- 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
- F01L1/181—Centre pivot rocking arms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
Abstract
The invention discloses a valve lift device and a vehicle with the same, wherein the valve lift device comprises: a valve assembly; a middle rocker arm assembly comprising a middle swing arm; a camshaft; the driving rocker arm is provided with a first profile and a second profile, the first profile is matched with the intermediate rocker arm, the camshaft drives the driving swing arm to act through the intermediate rocker arm, and the second profile is matched with the valve assembly so as to drive the valve motion of the valve assembly; an actuation mechanism for driving the drive rocker arm about an adjustment axis to vary the amount of lift of the valve assembly. According to the valve lift device, the intermediate rocker arm, the driving rocker arm and the actuating mechanism are arranged, so that the lift of the valve is variable, the structure is simple, the manufacturing cost is low, the transmission path of power from the camshaft to the valve lift device is short, and the driving force transmission efficiency of the valve lift device is high.
Description
Technical Field
The invention belongs to the technical field of vehicle manufacturing, and particularly relates to a valve lift device and a vehicle with the same.
Background
For an engine with a fixed valve lift, a fixed cam profile line and a valve lift mechanism are selected according to arrangement and performance requirements, and the performance and the oil consumption are guaranteed. However, according to the principle of the internal combustion engine, in the middle-low rotating speed and load region, the small valve lift can properly reduce the pumping loss, increase the charging efficiency and improve the dynamic property and the economical efficiency of the engine; in a high-speed and high-load area, the large valve lift can ensure sufficient air input, reduce throttling loss and improve the high-speed performance of the engine. The variable valve lift technology can give consideration to both the dynamic performance and the economical efficiency of medium and low speed and high speed.
In the related art, the main valve lift apparatuses of the variable valve mechanism apparatus type on the market are complicated (an eccentric cam and the like need to be designed and arranged, and the transmission path is long, and there are many parts), resulting in high application cost.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a valve lift apparatus that has a simple structure, high power transmission efficiency, and variable valve lift, and a vehicle having the same.
The valve lift apparatus according to the embodiment of the present invention includes: a valve assembly; a middle rocker arm assembly comprising a middle swing arm; a camshaft; the driving rocker arm is provided with a first profile and a second profile, the first profile is matched with the intermediate rocker arm, the camshaft drives the driving swing arm to act through the intermediate rocker arm, and the second profile is matched with the valve assembly so as to drive the valve motion of the valve assembly; an actuation mechanism for driving the drive rocker arm about an adjustment axis to vary the amount of lift of the valve assembly.
According to the valve lift device, the intermediate rocker arm, the driving rocker arm and the actuating mechanism are arranged, so that the lift of the valve is variable, the structure is simple, the manufacturing cost is low, the transmission path of power from the camshaft to the valve lift device is short, and the driving force transmission efficiency of the valve lift device is high.
According to the valve lift apparatus of one embodiment of the present invention, the adjustment axis of the driving rocker arm coincides with the oscillation axis of the driving rocker arm.
According to the valve lift apparatus of one embodiment of the present invention, the first profile and the second profile are both smoothly transitioned curved surfaces.
According to the valve lift apparatus of one embodiment of the present invention, the intermediate rocker arm is located between the camshaft and the driving rocker arm, the valve assembly is located below the driving rocker arm, the first profile is recessed in a direction away from the intermediate rocker arm, and the second profile is recessed in a direction away from the valve assembly.
According to the valve lift device provided by the embodiment of the invention, the driving rocker arm is further provided with an avoiding groove, and the avoiding groove is connected between the first molded surface and the second molded surface.
According to the valve lift device, the valve lift device further comprises a first shaft and an elastic resetting piece, the driving rocker arm is pivotally installed on the first shaft, and the driving rocker arm is installed on the first shaft through the elastic resetting piece.
According to the valve lift device provided by the embodiment of the invention, the elastic reset piece is a reset spring, the reset spring is sleeved on the first shaft and is fixedly connected with the first shaft, the driving rocker arm is sleeved on the first shaft in a hollow mode, and one end of the reset spring is fixedly connected with the driving rocker arm.
According to the valve lift device of one embodiment of the invention, the braking mechanism comprises a stepping motor which is in power coupling connection with the driving rocker arm.
The valve lift device further comprises a second shaft, the intermediate rocker arm assembly further comprises a roller, the intermediate rocker arm is sleeved on the second shaft in a hollow mode, the roller is pivotally arranged on the intermediate rocker arm, and the roller is matched with the first molded surface.
The invention also provides a vehicle comprising the valve lift assembly according to any one of the embodiments of the invention.
The vehicle and the valve lift assembly have the same advantages compared with the prior art, and the detailed description is omitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a front view of a valve lift apparatus according to an embodiment of the present invention;
fig. 2 is a side view of a valve lift apparatus according to an embodiment of the present invention.
Reference numerals:
the valve lift apparatus 100;
a valve assembly 1; a valve 11; a hydraulic tappet roller rocker arm 12;
an intermediate rocker arm assembly 2; an intermediate rocker arm 21; a roller 22;
a camshaft 3;
a driving rocker arm 4; a first profile 41; a second shaped surface 42; an escape groove 43;
a first hole 51; a second aperture 52; a return spring 53; a first shaft 54.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A valve lift apparatus 100 and a vehicle having the same according to an embodiment of the present invention will be described with reference to fig. 1 to 2.
The valve lift apparatus 100 according to the present invention includes: a valve assembly 1, an intermediate rocker arm assembly 2, a camshaft 3, a driving rocker arm 4 and an actuating mechanism.
Wherein, valve assembly 1 includes valve 11, and middle rocking arm subassembly 2 includes middle swing arm, and camshaft 3 rotates so that the profile drive middle rocking arm 21 swing of camshaft 3 to middle rocking arm 21 transmits the drive power of camshaft 3 to drive rocking arm 4, and drive rocking arm 4 is connected with valve assembly 1 power coupling, in order to drive valve 11 switching.
The driving rocker arm 4 is provided with a first profile and a second profile, the first profile is matched with the intermediate rocker arm 21, the camshaft 3 drives the driving rocker arm 4 to act through the intermediate rocker arm 21, and the second profile is matched with the valve assembly 1 to drive the valve 11 of the valve assembly 1 to move; the actuating mechanism is used for driving the driving rocker arm 4 to act around an adjusting axis so as to change the lift amount of the valve assembly 1.
Specifically, the valve assembly 1 may include a hydraulic tappet roller rocker arm 12 and a valve 11, the hydraulic tappet roller rocker arm 12 is provided with a hydraulic tappet roller 22 matching with the second profile 42 of the driving rocker arm 4, when the driving rocker arm 4 rotates, the second profile 42 of the driving rocker arm 4 pushes the hydraulic tappet roller 22 to rotate the hydraulic tappet roller rocker arm 12, and the hydraulic tappet roller rocker arm 12 is connected with the valve 11, when the driving rocker arm 4 swings, the driving rocker arm 4 drives the hydraulic tappet roller rocker arm 12 to rotate, and the hydraulic tappet roller rocker arm 12 drives the valve 11 to move, so as to open and close the valve 11.
The actuating mechanism is used for adjusting the relative position of the driving rocker arm 4 and the valve assembly 1, for example, the actuating mechanism rotates the driving rocker arm 4 by a certain angle to change the relative position of the driving rocker arm 4 and the valve assembly 1, when the driving rocker arm 4 adjusts the angle, the matching position of the first surface 41 and the intermediate rocker arm 21 also changes, in the above process, the intermediate rocker arm 21 is normally attached to the camshaft 3, and the first surface 41 of the intermediate rocker arm 21 is normally attached to the driving rocker arm 4, when the valve lift needs to be adjusted, the driving rocker arm 4 is rotated by the actuating mechanism to change the initial matching position of the driving rocker arm 4 and the valve assembly 1 (the initial position may be the relative position of the driving rocker arm 4 and the valve assembly 1 when the valve 11 is opened to the maximum), so as to obtain different valve lifts.
According to the valve lift apparatus 100 of the present invention, the intermediate rocker arm 21, the driving rocker arm 4 and the actuating mechanism are provided, so that the lift of the valve 11 is variable, the structure is simple, the manufacturing cost is low, the transmission path of power from the camshaft 3 to the valve lift apparatus 100 is short, and the driving force transmission efficiency of the valve lift apparatus 100 is high.
Some embodiments of the valve lift apparatus 100 according to the present invention are described below with reference to fig. 1 and 2.
In some embodiments, the adjustment axis of the driving rocker arm 4 coincides with the swing axis of the driving rocker arm 4, i.e. the rotation axis of the actuating mechanism driving the driving rocker arm 4 is collinear with the rotation axis of the intermediate rocker arm 21 driving the driving rocker arm 4, thereby making it possible to facilitate calculation of the opening degree of the adjustment valve 11 and to simplify the structure and arrangement of the driving rocker arm 4.
In some embodiments, the first and second profiles are smoothly curved, so that the valve lift apparatus 100 can operate more smoothly.
In some embodiments, the intermediate rocker arm 21 is located between the camshaft 3 and the actuating rocker arm 4, the valve assembly 1 is located below the actuating rocker arm 4, the first profile is concave away from the intermediate rocker arm 21, and the second profile is concave away from the valve assembly 1.
Thus, the structure of the valve lift apparatus 100 can be made more compact, and the transmission of the driving force of the camshaft 3 to the valve assembly 1 is facilitated, and the driving force can be transmitted to the valve assembly 1 in a shorter path by the cooperation of the intermediate rocker arm 21 with the first profile 41, the cooperation of the valve assembly 1 with the second profile 42.
In some embodiments, the driving rocker arm 4 is further provided with an avoiding groove 43, the avoiding groove 43 is connected between the first profile and the second profile, the profile of the avoiding groove 43 may be arc-shaped, and the avoiding groove 43 may be arranged to prevent the driving rocker arm 4 from interfering with the intermediate rocker arm 21 or the hydraulic tappet roller rocker arm 12 during the swinging process.
In some embodiments, the valve lift apparatus 100 further includes a first shaft 54 and an elastic reset member, the driving rocker arm 4 is pivotally mounted on the first shaft 54, in some examples, one end of the driving rocker arm 4 away from the valve assembly 1 is provided with a first hole 51, the driving rocker arm 4 is sleeved on the first shaft 54 through the first hole 51, the driving rocker arm 4 is mounted on the first shaft 54 through the elastic reset member, the elastic reset member is used for resetting the driving rocker arm 4, the elastic reset member stores elastic potential energy when the camshaft 3 drives the intermediate rocker arm 21, so that the driving rocker arm 4 swings, and when the camshaft 3 rotates to a position where the camshaft 3 does not drive the intermediate rocker arm 21 to rotate, the elastic reset member releases the elastic potential energy to reset the driving rocker arm 4, so that the next valve lift process can be performed smoothly.
In some embodiments, the elastic reset member is a reset spring 53, the reset spring 53 is sleeved on the first shaft 54 and is fixedly connected with the first shaft 54, the driving rocker arm 4 is sleeved on the first shaft 54 in a hollow manner, one end of the reset spring 53 is fixedly connected with the driving rocker arm 4, in some examples, the reset spring 53 is connected with one end of the driving rocker arm 4, which is far away from the valve assembly 1, the reset spring 53 is arranged to enable the driving rocker arm 4 to reset after swinging for a certain angle, and the matching mode of the driving spring and the driving rocker arm 4 is simple in structure and convenient to assemble.
In some examples, as shown in fig. 2, the engine of the vehicle includes a plurality of cylinders and a plurality of valve lift devices 100, the plurality of valve lift devices 100 are disposed in one-to-one correspondence with the plurality of cylinders, the driving rocker arms 4 of the plurality of valve lift devices 100 are arranged at intervals along the rotation axis thereof, and the driving rocker arms 4 of the plurality of valve lift devices 100 are all sleeved on the same first shaft 54.
In some examples, the actuating mechanism is connected to the first shaft 54, for example, an output shaft of a stepping motor of the actuating mechanism is connected to the first shaft 54, the driving rocker arm 4 is sleeved on the first shaft 54 (i.e., the driving rocker arm 4 can rotate freely relative to the first shaft 54), the return spring 53 is fixedly connected to the first shaft 54, and one end of the return spring 53 is fixedly connected to the driving rocker arm 54, when the stepping motor drives the first shaft 54 to rotate, the return spring 53 can drive the driving rocker arm 4 to rotate, so as to achieve adjustment of the driving rocker arm 4, and the adjusted driving rocker arm 4 can rotate around the first shaft 54 under the driving of the intermediate rocker arm 21 to drive the opening and closing of the valve.
In some embodiments, the braking mechanism includes a stepping motor, the stepping motor is coupled to the driving rocker arm 4, and the angular displacement can be controlled by controlling the number of control pulses input to the stepping motor, so as to accurately position the rotation of the stepping motor, and thus accurately control and adjust the relative position of the driving rocker arm 4 and the valve assembly 1.
In some embodiments, the valve lift apparatus 100 further includes a second shaft, the intermediate rocker arm assembly 2 further includes a roller 22, the intermediate rocker arm 21 is hollow in the second shaft, the roller 22 is pivotally mounted on the intermediate rocker arm 21, the roller 22 is engaged with the camshaft 3, and the roller 22 is engaged with the first profile, in some examples, the roller 22 is disposed at a first end of the intermediate rocker arm 21, a second hole 52 is disposed at a second end of the intermediate rocker arm 21, the intermediate rocker arm 21 is engaged with the second shaft through the second hole 52, and the roller 22 is disposed to enable the engagement between the roller 22 and the camshaft 3, and the engagement between the roller 22 and the driving rocker arm 4 to be smoother, so as to facilitate transmission of the driving force.
The vehicle according to the present invention includes the valve lift apparatus 100 according to any one of the embodiments of the present invention.
The vehicle according to the present invention has corresponding advantages by providing the valve lift apparatus 100 according to the present invention, which will not be described herein.
The operation of the valve 11 generation apparatus according to an embodiment of the present invention will be described with reference to fig. 1 and 2.
The operating principle of the valve 11 generating device is as follows:
1) the camshaft 3 is driven by an engine crankshaft of the vehicle to rotate in a clockwise direction;
2) the camshaft 3 drives the middle rocker arm component 2 in the rotating process, and the middle rocker arm 21 rotates around the second shaft to swing back and forth;
3) the intermediate rocker arm assembly 2 moves along a matching profile of the intermediate rocker arm 21 and the camshaft 3 under the driving of the camshaft 3 (the profile needs to meet the requirement that the camshaft 3 and the driving rocker arm 4 are always tangent to a roller 22 in the intermediate rocker arm assembly 2 within the working lift range of the valve 11), and simultaneously drives the driving rocker arm 4 to swing; wherein, the middle rocker arm assembly 2, the camshaft 3 and the driving rocker arm 4, 3 components are always kept in a tangent relation;
4) the driving rocker arm 4 assembly is sleeved on the first shaft 54 and connected with a return spring 53, and the driving rocker arm 4 realizes reciprocating swing motion under the action of the return spring 53;
5) the driving rocker arm 4 assembly drives the hydraulic tappet roller rocker arm 12 and the valve 11 to work.
6) When the valve lift is at the minimum position, the middle rocker arm assembly 2, the base circle of the camshaft 3 and the driving rocker arm 4 are always in tangent relation; the camshaft 3 is held 1: 2, the camshaft 3 drives the intermediate rocker arm assembly 2, and thus the driving rocker arm 4, and thus the hydraulic tappet roller rocker arm 12 and the valve 11. At the moment, the minimum valve lift can be defined according to design requirements so as to meet the oil consumption target in a low-speed and low-load region, meanwhile, the responsiveness of the supercharger can be improved, and the working rotating speed of the maximum torque of the supercharger can be reduced, for example, the 2.0TGDI engine can output 380 Nm at 1500 rpm;
7) when the valve 11 needs to be adjusted from the lift-smaller position to the lift-larger position, the first shaft 54 on which the driving rocker arm 4 is located is rotated in the clockwise direction by the driving of the stepping motor, since the return spring 53 is fixedly connected to the first shaft 54, and one end of the return spring 53 is connected to the driving rocker arm 4, the return spring 53 drives the driving rocker arm 4 to rotate clockwise, to change the relative position of the actuating rocker arm 4 to the valve assembly 1, and the relative position of the roller 22 of the intermediate rocker arm assembly 2 to the first profile 41, under the drive of the camshaft 3, the matching position of the roller 22 of the intermediate rocker arm assembly 2 and the first surface 41 is also changed, and the roller 22 of the intermediate rocker arm assembly 2 is always tangent to the driving rocker arm 4 and the camshaft 3, and the driving rocker arm 4 assembly swings around the first shaft 54 within a certain angle range under the action of the return spring 53. The maximum valve lift can be defined according to the design requirement to meet the power performance target of a high-speed high-load region, such as enabling a 2.0TGDI engine to output 180Kw of power;
the engine of the vehicle according to the present invention satisfies the development performance target by realizing continuous variation of the valve lift by using the valve lift apparatus 100 according to the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A valve lift apparatus, characterized by comprising:
a valve assembly;
a middle rocker arm assembly comprising a middle swing arm;
a camshaft;
the driving rocker arm is provided with a first profile and a second profile, the first profile is matched with the intermediate rocker arm, the camshaft drives the driving swing arm to act through the intermediate rocker arm, and the second profile is matched with the valve assembly so as to drive the valve motion of the valve assembly;
an actuation mechanism for driving the drive rocker arm about an adjustment axis to vary the amount of lift of the valve assembly.
2. Valve lift apparatus according to claim 1, characterized in that the adjustment axis of the driving rocker arm coincides with the oscillation axis of the driving rocker arm.
3. The valve lift apparatus of claim 1, wherein the first and second profiles are smoothly curved.
4. A valve lift apparatus as claimed in claim 3, wherein said intermediate rocker arm is located between said camshaft and said drive rocker arm, said valve assembly is located below said drive rocker arm, said first profile is concave away from said intermediate rocker arm, and said second profile is concave away from said valve assembly.
5. The valve lift apparatus of claim 4, further comprising an avoidance groove disposed on the actuator rocker arm, the avoidance groove coupled between the first profile and the second profile.
6. The valve lift apparatus of claim 1, further comprising a first shaft and a resilient return, said drive rocker arm being pivotally mounted to said first shaft and said drive rocker arm being mounted to said first shaft by said resilient return.
7. The valve lift apparatus according to claim 6, wherein the elastic return element is a return spring, the return spring is sleeved on the first shaft and is fixedly connected with the first shaft, the driving rocker arm is sleeved on the first shaft in a hollow manner, and one end of the return spring is fixedly connected with the driving rocker arm.
8. Valve lift apparatus according to any of claims 1 to 7, characterized in that the braking mechanism comprises a step motor which is in power-coupled connection with the driving rocker arm.
9. Valve lift apparatus according to any one of the claims 1 to 7, further comprising a second shaft, wherein the intermediate rocker arm assembly further comprises a roller, the intermediate rocker arm being hollow in the second shaft, the roller being pivotably mounted to the intermediate rocker arm, the roller engaging the first profile.
10. A vehicle characterized by comprising the valve lift apparatus of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904254.9A CN110645063A (en) | 2019-09-24 | 2019-09-24 | Valve lift device and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904254.9A CN110645063A (en) | 2019-09-24 | 2019-09-24 | Valve lift device and vehicle with same |
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| Publication Number | Publication Date |
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| CN110645063A true CN110645063A (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910904254.9A Pending CN110645063A (en) | 2019-09-24 | 2019-09-24 | Valve lift device and vehicle with same |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005201077A (en) * | 2004-01-13 | 2005-07-28 | Otics Corp | Variable valve system |
| CN101550853A (en) * | 2009-05-08 | 2009-10-07 | 上海汽车集团股份有限公司 | Engine air valve continuously variable driving mechanism |
| CN101705851A (en) * | 2009-11-10 | 2010-05-12 | 上海汽车集团股份有限公司 | Mechanical continuous variable valve lift driving device |
| CN105507979A (en) * | 2015-12-17 | 2016-04-20 | 广州汽车集团股份有限公司 | Continuous variable valve lift system and automobile |
| CN106640256A (en) * | 2016-12-05 | 2017-05-10 | 广州汽车集团股份有限公司 | Valve-stroke-continuous-variable system and automobile with the same |
| CN107642384A (en) * | 2017-09-01 | 2018-01-30 | 大连理工大学 | A kind of continuous variable valve mechanism |
-
2019
- 2019-09-24 CN CN201910904254.9A patent/CN110645063A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005201077A (en) * | 2004-01-13 | 2005-07-28 | Otics Corp | Variable valve system |
| CN101550853A (en) * | 2009-05-08 | 2009-10-07 | 上海汽车集团股份有限公司 | Engine air valve continuously variable driving mechanism |
| CN101705851A (en) * | 2009-11-10 | 2010-05-12 | 上海汽车集团股份有限公司 | Mechanical continuous variable valve lift driving device |
| CN105507979A (en) * | 2015-12-17 | 2016-04-20 | 广州汽车集团股份有限公司 | Continuous variable valve lift system and automobile |
| CN106640256A (en) * | 2016-12-05 | 2017-05-10 | 广州汽车集团股份有限公司 | Valve-stroke-continuous-variable system and automobile with the same |
| CN107642384A (en) * | 2017-09-01 | 2018-01-30 | 大连理工大学 | A kind of continuous variable valve mechanism |
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Application publication date: 20200103 |
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