CN204436504U - Engine valve actuator - Google Patents
Engine valve actuator Download PDFInfo
- Publication number
- CN204436504U CN204436504U CN201520064411.7U CN201520064411U CN204436504U CN 204436504 U CN204436504 U CN 204436504U CN 201520064411 U CN201520064411 U CN 201520064411U CN 204436504 U CN204436504 U CN 204436504U
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- China
- Prior art keywords
- valve
- oil
- plunger
- pressure
- drive cylinder
- 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.)
- Expired - Fee Related
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- 239000012530 fluid Substances 0.000 claims abstract description 101
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 238000005461 lubrication Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 91
- 230000008859 change Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- Valve Device For Special Equipments (AREA)
Abstract
The utility model provides a kind of engine valve actuator, wherein, comprise actuator and pressure fluid control mechanism, described actuator comprises drive cylinder, the plunger being arranged in described drive cylinder and the valve being connected to described motor apply for this valve the elastic component that elasticity opens resistance, one end and the described drive cylinder of described plunger surround fluid chamber, described fluid chamber is connected with described pressure fluid control mechanism by fluid line, the other end of described plunger is towards the valve of described motor, thus described pressure fluid control mechanism pilot pressure fluid is when entering described fluid chamber and promote described plunger motion, described plunger promotes described valve and overcomes the elastic force motion of described elastic component to make described valve opening, when controlling the pressure fluid pressure release in described fluid chamber at described pressure fluid control mechanism, described elastic component drives described valve-closing.
Description
Technical field
The utility model relates to the valve actuation system of motor, particularly a kind of engine valve actuator.
Background technique
Traditional motor generally adopts the actuated by cams valve of fixing molded line, and valve lift curve is fixing, and this makes the oil consumption of motor can not reach the optimum state in all operating modes with discharge.And the problem that society energy shortage and environment run down highlights day by day, we need motor to meet harsher fuel economy regulation and Abgasgesetz.Therefore, changeable air valve technology is arisen at the historic moment---and main purpose changes the timing (valve timing refers to valve opening and closedown opportunity) of valve, lift and unlatching endurance, and described changeable air valve technology is divided into the changeable air valve technology based on camshaft and the changeable air valve technology without camshaft usually.
It is variable that changeable air valve technology based on camshaft realizes valve lift curve mainly through change mechanical structure, fast response time, defect is that structure is very complicated, requires high to the mechanical property of design of part and accuracy of manufacturing, not only increase cost, and the reliability of mechanism is comparatively difficult to ensure card.
Model utility content
In view of this, to be intended to propose a kind of structure simple and can change valve timing, lift and unlatching duration isoparametric engine valve actuator for the utility model.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of engine valve actuator, wherein, comprise actuator and pressure fluid control mechanism, described actuator comprises drive cylinder, the plunger being arranged in described drive cylinder and the valve being connected to described motor apply for this valve the elastic component that elasticity opens resistance, one end and the described drive cylinder of described plunger surround fluid chamber, described fluid chamber is connected with described pressure fluid control mechanism by fluid line, the other end of described plunger is towards the valve of described motor, thus described pressure fluid control mechanism pilot pressure fluid is when entering described fluid chamber and promote described plunger motion, described plunger promotes described valve and overcomes the elastic force motion of described elastic component to make described valve opening, when controlling the pressure fluid pressure release in described fluid chamber at described pressure fluid control mechanism, described elastic component drives described valve-closing.
Further, described drive cylinder comprises plunger receiving cavity and valve receiving cavity, described plunger can be arranged in described plunger receiving cavity and this plunger receiving cavity can be separated into the first chamber and the second chamber with slidably reciprocating, described first chamber is described fluid chamber, described second chamber is communicated with described valve receiving cavity, a part for described valve is arranged in described valve receiving cavity, described elastic component is for being arranged in described valve receiving cavity and being set in described laterostigmatal spring, one end of described spring is resisted against and is arranged on described laterostigmatal spring seat, the other end is resisted against the bottom of described drive cylinder, described bottom is away from described fluid chamber, the position be connected with described plunger receiving cavity chamber wall of described valve receiving cavity chamber wall is formed with the step protruded to described valve receiving cavity inside.
Further, described spring seat is fixedly mounted on described valve by being connected to described laterostigmatal lock tooth, and the teeth portion of described lock tooth embeds in described laterostigmatal teeth groove accordingly, and described teeth groove is set to multiple along the axially spaced-apart of described valve.
Further, one end towards described valve of described plunger is formed with valve receiving bore, and the top end of described valve extend in described valve receiving bore, and described valve receiving bore and described valve top end form Spielpassung each other.
Further, described drive cylinder is connected to engine cylinder and covers, the part of described engine cylinder cover is as the bottom of described drive cylinder, and the position of the close described bottom of the sidewall of described drive cylinder is formed and makes the inside of described drive cylinder and the passage of ft connection.
Further, described drive cylinder comprises the oil hydraulic cylinder cylinder cap on the cylinder body top being arranged on this drive cylinder, the sidewall of the cylinder body of described oil hydraulic cylinder cylinder cap, described drive cylinder and one end of described plunger surround described fluid chamber jointly, the through described oil hydraulic cylinder cylinder cap of described hydraulic tubing.
Further, described pressure fluid control mechanism is hydraulic control mechanism, described hydraulic control mechanism comprises the oil-feed oil circuit and oil return circuit that are connected with described hydraulic tubing, described oil-feed oil circuit is connected by oil pump with described oil return circuit, described oil-feed oil circuit is provided with the first control valve, described oil return circuit is provided with the second control valve, described oil return circuit is also connected with oil supply system, described oil-feed oil circuit is provided with first-class gauge, described oil return circuit is provided with second gauge, described oil-feed oil circuit is provided with high pressure oil rail, described oil return circuit is provided with low pressure oil rail, described high pressure oil rail is connected with oil sump by the first auxiliary oil way, described low pressure oil rail is connected with oil sump by the second auxiliary oil way, described first auxiliary oil way is provided with the first pressure-limit valve, described second auxiliary oil way is provided with the second pressure-limit valve.
Further, described oil supply system is the lubrication system of described motor, and described oil supply system is connected with described low pressure oil rail by oil feeding line, described oil feeding line is provided with one-way valve, the forward hydraulic fluid port of described one-way valve is connected to described oil supply system, and reverse hydraulic fluid port is connected to described low pressure oil rail.
Further, described hydraulic control mechanism also comprises ECU (Electrical Control Unit), and described ECU (Electrical Control Unit) is electrically connected to described first control valve, the second control valve, first-class gauge, second gauge, the first pressure-limit valve and the second pressure-limit valve.
Further, described oil-feed oil circuit or described oil return circuit are provided with constant temperature device.
Relative to prior art, engine valve actuator described in the utility model has following advantage:
Engine valve actuator described in the utility model is when described pressure fluid control mechanism pilot pressure fluid enters described fluid chamber and promotes described plunger motion, described plunger promotes described valve and overcomes the elastic force motion of described elastic component to make described valve opening, when controlling the pressure fluid pressure release in described fluid chamber at described pressure fluid control mechanism, described elastic component drives described valve-closing, so can by controlling to enter entering and outflow opportunity of the fluid of described fluid chamber, fluid volume and fluid enter to flow out between the parameter such as interval time carry out the timing of corresponding change valve, the parameters such as lift and unlatching duration.
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and exemplary embodiment of the present utility model and explanation thereof, for explaining the utility model, are not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the engine valve actuator described in the utility model mode of execution;
Fig. 2 is the enlarged view at A place in Fig. 1;
Fig. 3 is the structural representation of the plunger described in the utility model mode of execution.
Description of reference numerals:
1-drive cylinder, 2-plunger, 3-valve, 4-fluid chamber, 5-fluid line, 6-spring seat, 7-locks tooth, 8-step, 9-engine cylinder cover, 10-passage, 11-oil-feed oil circuit, 12-oil return circuit, 13-oil pump, 14-first control valve, 15-second control valve, 16-oil supply system, the first-class gauge of 17-, 18-second gauge, 19-high pressure oil rail, 20-low pressure oil rail, 21-oil sump, 22-first pressure-limit valve, 23-second pressure-limit valve, 24-one-way valve, 25-ECU (Electrical Control Unit), 26-constant temperature device, 27-spring, 28-oil hydraulic cylinder cylinder cap, 2a-sealing strip, 2b-valve receiving bore.
Embodiment
It should be noted that, when not conflicting, the mode of execution in the utility model and the feature in mode of execution can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with mode of execution.
See Fig. 1, the utility model provides a kind of engine valve actuator, wherein, this engine valve actuator comprises actuator and pressure fluid control mechanism, actuator comprises drive cylinder 1, the plunger 2 being arranged in drive cylinder 1 and the valve 3 being connected to motor are for the elastic component this valve 3 being applied to elasticity unlatching resistance, the fluid chamber 4 that one end of plunger 2 and drive cylinder 1 surround, fluid chamber 4 is connected with pressure fluid control mechanism by fluid line 5, the other end of plunger 2 is towards the valve 3 of motor, thus pressure fluid control mechanism pilot pressure fluid enters fluid chamber 4 and promotes plunger 2 when moving, plunger 2 promotes valve 3 and overcomes the elastic force motion of elastic component to make valve 3 open, during pressure fluid pressure release in pressure fluid control mechanism control flow check fluid chamber 4, elastic component drives valve 3 to close.Here the fluid mentioned typically refers to liquid; because liquid is generally considered as being incompressible; like this can more effectively by hydraulic fluid plunger 2; certainly; if the even not compressible gas of the gas that there is more difficult compression, the situation this fluid being considered as gas also will be subject to protection of the present invention.
As mentioned above, the engine valve actuator provided due to the utility model pressure fluid control mechanism pilot pressure fluid (preferred liquid) enter fluid chamber 4 and promote plunger 2 move time, plunger 2 promotes valve 3 and overcomes the elastic force motion of elastic component to make valve 3 open, during pressure fluid pressure release in pressure fluid control mechanism control flow check fluid chamber 4, elastic component drives valve 3 to close, so can by control to enter the fluid of fluid chamber entering and outflow to change plunger 2 opportunity and promotes opportunity that valve 3 opens and the opportunity that elastic component drives valve 3 to close, the stroke that the movement travel changing plunger 2 by controlling to enter the fluid volume of fluid chamber 4 or quality is promoted by plunger 2 to change valve 3, thus change the lift of valve, by the unlatching duration changing valve 3 interval time controlling fluid and enter and between flowing out, certainly, other parameters of valve correspondingly can be changed by other control operations of pressure fluid control mechanism, here do not enumerate.
According to preferred implementation of the present utility model, see Fig. 1 and Fig. 2, drive cylinder 1 can comprise plunger receiving cavity and valve receiving cavity, plunger 2 can be arranged in plunger receiving cavity and this plunger receiving cavity can be separated into the first chamber and the second chamber with slidably reciprocating, first chamber is fluid chamber 4 above-mentioned, second chamber is communicated with valve receiving cavity, a part for valve 3 can be arranged in valve receiving cavity, elastic component can for being arranged in valve receiving cavity and being set in the spring 27 on valve 3, one end of spring 27 is resisted against the spring seat 6 be arranged on valve 3, the other end is resisted against drive cylinder 1 bottom, the bottom of this drive cylinder 1 is away from fluid chamber 4.
In addition, spring seat 6 can be fixedly mounted on valve 3 by the lock tooth 7 be connected on valve 3, the teeth portion of lock tooth 7 embeds in the teeth groove on valve 3 accordingly, teeth groove is set to multiple along the axially spaced-apart of valve 3, and the utility model is not limited thereto, spring seat 6 is fixedly mounted on valve 3 by other suitable modes and is also fine.
In addition, the position that valve receiving cavity chamber wall is connected with plunger receiving cavity chamber wall is formed with the step 8 protruded to valve receiving cavity inside, like this, when the pressure fluid promotion plunger 2 entering fluid chamber 4 moves a segment distance, plunger 2 can be blocked by step 8 and cannot continue motion, such design, the motion of plunger 2 can be limited on the one hand, on the other hand, when designing, when plunger 2 can be made to move to blocked by step 8, valve 3 is pushed to the state of opening completely just by plunger 2, that is, the position of step 8 is mapped with the unlatching completely of valve 3, and do not need the amount by controlling to enter the pressure fluid of fluid chamber 4 that valve 3 is opened completely, operation can be made so more convenient.Certain the utility model is not limited thereto, and obviously, mode valve 3 being opened completely by the amount controlling to enter the pressure fluid of fluid chamber 4 also should be subject to protection of the present utility model.
Preferably, as can be seen from Figure 3, one end towards valve 3 of plunger 2 can be formed with valve receiving bore 2b, and the top end of valve extend in valve receiving bore 2b and valve receiving bore 2b and valve 3 top end form Spielpassung each other, the side of fitting with drive cylinder 1 of plunger 2 can be provided with sealing strip 2a and enter the second chamber to prevent pressure fluid from the first chamber.
Preferably, drive cylinder 1 can be connected on engine cylinder cover 9, the part of engine cylinder cover 9 is as the bottom of drive cylinder 1, the position of the close bottom of the sidewall of drive cylinder 1 is formed and makes the inside of drive cylinder 1 and the path 10 of ft connection, thus, even if there is a small amount of pressure fluid to enter the second chamber because of poorly sealed from the first chamber, these pressure fluids also can be discharged from path 10.
In addition, drive cylinder 1 comprises the oil hydraulic cylinder cylinder cap 28 on the cylinder body top being arranged on this drive cylinder 1, and the sidewall of the cylinder body of oil hydraulic cylinder cylinder cap 28, drive cylinder 1 and one end of plunger 2 surround fluid chamber 4 jointly, the through oil hydraulic cylinder cylinder cap 28 of hydraulic tubing 5.
Still see Fig. 1, pressure fluid control mechanism is preferably hydraulic control mechanism, hydraulic control mechanism can comprise the oil-feed oil circuit 11 and oil return circuit 12 that are connected with hydraulic tubing 5, oil-feed oil circuit 11 is connected by oil pump 13 with oil return circuit 12, oil-feed oil circuit 11 is provided with the first control valve 14, oil return circuit 12 is provided with the second control valve 15, oil return circuit 12 is also connected with oil supply system 16, and this oil supply system 16 is preferably the lubrication system of motor.Drive oil pump 13 and the first control valve 14 is opened, the second control valve 15 closes, hydraulic oil can be made to enter fluid chamber 4 by oil-feed oil circuit 11, drive oil pump 13 and the first control valve 14 is closed, the second control valve 15 opens, the hydraulic oil in fluid chamber 4 can be made to be flowed out by oil return circuit 12, and wherein oil supply system 16 plays the effect to hydraulic control mechanism replenisher force feed.
In addition, oil-feed oil circuit 11 can be provided with first-class gauge 17, oil return circuit 12 can be provided with second gauge 18, thus can the oil inlet quantity of test fluid chamber 4 or oil pump capacity.
Preferably, oil-feed oil circuit 11 can be provided with high pressure oil rail 19, oil return circuit 12 is provided with low pressure oil rail 20, high pressure oil rail 19 is connected with oil sump 21 by the first auxiliary oil way, low pressure oil rail 20 is connected with oil sump 21 by the second auxiliary oil way, first auxiliary oil way is provided with the first pressure-limit valve 22, second auxiliary oil way is provided with the second pressure-limit valve 23, thus, unnecessary hydraulic oil on oil-feed oil circuit 11 or oil return circuit 12 can flow in oil sump 21, avoids hydraulic control mechanism overpressure.
Particularly, oil supply system 16 can also be connected with low pressure oil rail 20 by oil feeding line, oil feeding line can be provided with one-way valve 24, the forward hydraulic fluid port of one-way valve 24 is connected to oil supply system 16, reverse hydraulic fluid port is connected to low pressure oil rail 20, thus hydraulic oil can be prevented to be back to oil supply system 16 from low pressure oil rail 20.In addition, oil-feed oil circuit 11 or oil return circuit 12 can also be provided with constant temperature device 26, to ensure the temperature constant of the hydraulic oil in hydraulic control mechanism.Hydraulic control mechanism can also comprise ECU (Electrical Control Unit) 25, ECU (Electrical Control Unit) 25 is electrically connected to the first control valve 14, second control valve 15, first-class gauge 17, second gauge 18, first pressure-limit valve 22 and the second pressure-limit valve 23, can record the statistics situation of flowmeter and to control keying or the opening degree of pressure-limit valve and control valve.In the utility model, particularly, ECU (Electrical Control Unit) 25 can regulate the start-up time of the first control valve 14, second control valve 15 according to the feedback signal of the corner signal of motor and first-class gauge 17, second gauge 18, opens the duration and regulate the aperture of the first control valve 14, second control valve 15, thus the unlatching of the start-up time of change valve 3, unlatching endurance, valve and seating velocity, to realize the change of valve lift curve, farthest to meet the various working condition requirements of motor.Certainly, correspondingly can be changed other parameters of valve by other control operations of ECU (Electrical Control Unit) 25, not enumerate here.
The foregoing is only better embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an engine valve actuator, it is characterized in that, comprise actuator and pressure fluid control mechanism, described actuator comprises drive cylinder (1), the plunger (2) being arranged in described drive cylinder (1) and the valve (3) being connected to described motor apply for this valve (3) elastic component that elasticity opens resistance, one end and the described drive cylinder (1) of described plunger (2) surround fluid chamber (4), described fluid chamber (4) is connected with described pressure fluid control mechanism by fluid line (5), the other end of described plunger (2) is towards the valve (3) of described motor, thus described pressure fluid control mechanism pilot pressure fluid enter described fluid chamber (4) and promote described plunger (2) motion time, described plunger (2) promotes described valve (3) and overcomes the elastic force motion of described elastic component to make described valve (3) open, when described pressure fluid control mechanism controls the pressure fluid pressure release in described fluid chamber (4), described elastic component drives described valve (3) to close.
2. engine valve actuator according to claim 1, it is characterized in that, described drive cylinder (1) comprises plunger receiving cavity and valve receiving cavity, described plunger (2) can be arranged in described plunger receiving cavity and this plunger receiving cavity can be separated into the first chamber and the second chamber with slidably reciprocating, described first chamber is described fluid chamber (4), described second chamber is communicated with described valve receiving cavity, a part for described valve (3) is arranged in described valve receiving cavity, described elastic component is for being arranged in described valve receiving cavity and being set in the spring (27) on described valve (3), one end of described spring (27) is resisted against the spring seat (6) be arranged on described valve (3), the other end is resisted against the bottom of described drive cylinder (1), described bottom is away from described fluid chamber (4), the position be connected with described plunger receiving cavity chamber wall of described valve receiving cavity chamber wall is formed with the step (8) protruded to described valve receiving cavity inside.
3. engine valve actuator according to claim 2, it is characterized in that, described spring seat (6) is fixedly mounted on described valve (3) by the lock tooth (7) be connected on described valve (3), the teeth portion of described lock tooth (7) embeds in the teeth groove on described valve (3) accordingly, and described teeth groove is set to multiple along the axially spaced-apart of described valve (3).
4. engine valve actuator according to claim 1, it is characterized in that, one end towards described valve (3) of described plunger (2) is formed with valve receiving bore (2b), and the top end of described valve extend in described valve receiving bore (2b), and described valve receiving bore (2b) and described valve (3) top end form Spielpassung each other.
5. engine valve actuator according to claim 2, it is characterized in that, described drive cylinder (1) is connected on engine cylinder cover (9), the part of described engine cylinder cover (9) is as the bottom of described drive cylinder (1), and the position of the close described bottom of the sidewall of described drive cylinder (1) is formed with the passage (10) of inside and the ft connection making described drive cylinder (1).
6. engine valve actuator according to claim 1, it is characterized in that, described drive cylinder (1) comprises the oil hydraulic cylinder cylinder cap (28) on the cylinder body top being arranged on this drive cylinder (1), the sidewall of the cylinder body of described oil hydraulic cylinder cylinder cap (28), described drive cylinder (1) and one end of described plunger (2) surround described fluid chamber (4) jointly, the through described oil hydraulic cylinder cylinder cap (28) of described hydraulic tubing (5).
7. engine valve actuator as claimed in any of claims 1 to 6, it is characterized in that, described pressure fluid control mechanism is hydraulic control mechanism, described hydraulic control mechanism comprises the oil-feed oil circuit (11) and oil return circuit (12) that are connected with described hydraulic tubing (5), described oil-feed oil circuit (11) is connected by oil pump (13) with described oil return circuit (12), described oil-feed oil circuit (11) is provided with the first control valve (14), described oil return circuit (12) is provided with the second control valve (15), described oil return circuit (12) is also connected with oil supply system (16), described oil-feed oil circuit (11) is provided with first-class gauge (17), described oil return circuit (12) is provided with second gauge (18), described oil-feed oil circuit (11) is provided with high pressure oil rail (19), described oil return circuit (12) is provided with low pressure oil rail (20), described high pressure oil rail (19) is connected with oil sump (21) by the first auxiliary oil way, described low pressure oil rail (20) is connected with oil sump (21) by the second auxiliary oil way, described first auxiliary oil way is provided with the first pressure-limit valve (22), described second auxiliary oil way is provided with the second pressure-limit valve (23).
8. engine valve actuator according to claim 7, it is characterized in that, the lubrication system that described oil supply system (16) is described motor, and described oil supply system (16) is connected with described low pressure oil rail (20) by oil feeding line, described oil feeding line is provided with one-way valve (24), the forward hydraulic fluid port of described one-way valve (24) is connected to described oil supply system (16), and reverse hydraulic fluid port is connected to described low pressure oil rail (20).
9. engine valve actuator according to claim 8, it is characterized in that, described hydraulic control mechanism also comprises ECU (Electrical Control Unit) (25), and described ECU (Electrical Control Unit) (25) is electrically connected to described first control valve (14), the second control valve (15), first-class gauge (17), second gauge (18), the first pressure-limit valve (22) and the second pressure-limit valve (23).
10. engine valve actuator according to claim 7, is characterized in that, described oil-feed oil circuit (11) or described oil return circuit (12) are provided with constant temperature device (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064411.7U CN204436504U (en) | 2015-01-29 | 2015-01-29 | Engine valve actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064411.7U CN204436504U (en) | 2015-01-29 | 2015-01-29 | Engine valve actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204436504U true CN204436504U (en) | 2015-07-01 |
Family
ID=53604382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520064411.7U Expired - Fee Related CN204436504U (en) | 2015-01-29 | 2015-01-29 | Engine valve actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204436504U (en) |
-
2015
- 2015-01-29 CN CN201520064411.7U patent/CN204436504U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 |