CN2545009Y - Secondary starting device of clutch force-doubler - Google Patents
Secondary starting device of clutch force-doubler Download PDFInfo
- Publication number
- CN2545009Y CN2545009Y CN 02231641 CN02231641U CN2545009Y CN 2545009 Y CN2545009 Y CN 2545009Y CN 02231641 CN02231641 CN 02231641 CN 02231641 U CN02231641 U CN 02231641U CN 2545009 Y CN2545009 Y CN 2545009Y
- Authority
- CN
- China
- Prior art keywords
- piston
- auxiliary
- clutch
- cylinder
- action
- 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
Links
Images
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model relates to the auxiliary start-up device of a clutch booster, which is used to start a clutch booster and help the booster to drive the clutch. The device includes an auxiliary oil cylinder, an auxiliary pressure cylinder, a solenoid valve and a recovery valve; the auxiliary oil cylinder is provided with a piston; the piston compresses the working fluid to produce pressure, so as to drive the booster to work; the auxiliary pressure cylinder is provided with another piston which can work by pushing the piston of the auxiliary oil cylinder to work; the solenoid valve is arranged at the pressure inlet of the auxiliary pressure cylinder, so as to control the compressed air to enter into the auxiliary pressure cylinder; the air release side of the auxiliary pressure valve is additionally provided with a one-way valve to control the air through the air release side to be released one way only; when the recovery valve is closed, the external air cannot enter into the air release side of the auxiliary pressure cylinder; when the piston of the auxiliary pressure valve needs to be recovered, the air release side is under the vacuum state, so that the piston cannot be recovered; combination of the elements and control of the solenoid valve to the auxiliary pressure cylinder help the auxiliary oil cylinder to produce oil pressure, so as to drive the booster and control the clutch to work.
Description
Technical field
The utility model relates to a kind of auxiliary actuating apparatus of system of vehicle transmission function unit, refers to a kind of auxiliary actuating apparatus that is applicable to the power-transfer clutch of full size vehicle especially.
Background technology
General automobile normally utilizes power-transfer clutch of foot feed with manual transmission, by the driver train of stretcher drive power-transfer clutch, makes the pressing plate of power-transfer clutch produce the action that separates.And full size vehiclees such as truck or motorcoach are because the pressure of the clutch pressure plate of its use when operation is very big, can't utilize the pressing plate action of the strength driving power-transfer clutch of stretcher merely, the therefore general employed power-transfer clutch of full size vehicle can use a boosting device to drive power-transfer clutch.
As shown in Figure 3, be the structure of the clutch power intensifying device commonly used, wherein mainly comprise: an air cylinder 1, its front side is provided with deflation hole 1a, and its inside has an active piston 2, and the front end of this piston 2 is provided with a push rod 3, and a spring 3a, can produce and reply action; Reach one and drive oil hydraulic cylinder 4, be arranged on the front end of air cylinder 1, these driving oil hydraulic cylinder 4 inside have a piston 5.The rear end of piston 5 contacts with push rod 3, and can promote by drawn stem 3; And its front end is connected with a clutch linkage 6, and this piston 5 can promote this clutch linkage 6, produces the action of loosening and drive power-transfer clutch.
This oil pressure inlet that drives oil hydraulic cylinder 4 is connected with a main oil pressure cylinder 7, and this main oil pressure cylinder 7 can be driven by a pedal 8 and produce oil pressure, establishes a spring 7a in it, can produce and reply action; And the outlet of the oil pressure of this main oil pressure cylinder 7 is to be connected with the inlet of this driving oil hydraulic cylinder 4 by an oil pressure pipe, produces straight-line displacement and can enter these driving oil hydraulic cylinder 4 inner pistons 5 that promote.
In addition, this driving oil hydraulic cylinder 4 is provided with an oil pressure passage 9, and this oil pressure passage 9 can make the pressure of oil pressure some of main oil pressure cylinder 7 direct into a control cock 10.This control cock 10 is arranged at the compression container inlet of this air cylinder 1, it is a pneumatic control valve that utilizes oil pressure to start, when this main pressing system fault, during steerman push down on the pedal 8, be directly to utilize the pressure-driven of main oil pressure cylinder 7 to drive oil hydraulic cylinder 4, though need expend bigger strength and can drive clutch equipment this moment, but because the oil pressure of oil hydraulic cylinder 7 enters this control cock 10, control cock 10 can become opening, and make pressurized air enter into air cylinder 1, and promote active piston 2.
By this control cock 10 and air cylinder 1, can when steerman push down on the pedal 8, produce Pneumatic pressure power, promote the piston 5 of this driving oil hydraulic cylinder 4, and the generation auxiliary power to produce bigger power to drive power-transfer clutch, therefore can reach the purpose of saving steerman muscle power.And if air cylinder 1 or gas steerman can just can drive this clutch equipment via air cylinder 1, though therefore pressure system fault still can be kept whole clutch system normal operation.
The pneumatically controlled clutch that this kind commonly used uses on the heavy-duty vehicle of truck or motorcoach and so on usually, because the operation of the clutch equipment of its use is quite required great effort, therefore makes and also must expend appreciiable muscle power when steerman is stepped on pedal 7.And when vehicle ' during in the urban district, because vehicle must loiter often, and gear shift constantly in travelling, therefore make steerman disengage the clutch 7 very continually, often in short several kilometers distance, just must step on pedal 7 and reach hundreds of time, therefore make the truck of driving the hand gear or motorcoach travel to be the quite heavy and work that expends muscle power in the urban district.
There are many full size vehiclees to adopt the transmission system of auto transmission one after another at present.Yet because the Automatic Transmission of full size vehicle is very accurate machinery, and fault rate is higher than general manual transmission, therefore make only to have and on comparatively premium-quality motorcoach, just can use this kind Automatic Transmission system, and the still most change speed gear boxs that adopt the hand gear of general heavy wrecker truck or engineering truck.
In view of this inventor is to think hard funiculus, and active research is engaged in the experience that Related product is researched and developed for many years, and the utility model through constantly testing and improvement, developing finally.
Summary of the invention
Main purpose of the present utility model, be to provide a kind of for steerman must disengage the clutch when gear-change operation just can operated clutch, and can save the auxiliary actuating apparatus of clutch power intensifying device of the strength of operated clutch.
Another purpose of the present utility model is to be to provide a kind of can be installed on the existing vehicle, and the auxiliary actuating apparatus of the clutch power intensifying device that the various heavy-dutys vehicle of present appreciiable on the market of can arranging in pairs or groups use.
The purpose of this utility model is achieved in that
A kind of auxiliary actuating apparatus of clutch power intensifying device in order to start a clutch power intensifying device, so that this boosting device produces the action that drives power-transfer clutch, is characterized in that including:
One auxiliary oil hydraulic cylinder is connected with this boosting device, and it has oil pressure outlet, and its inside has a piston, is to produce pressure by its in-to-in working fluid of this Piston Compression, produces action and drive this boosting device, this piston nose is provided with a spring, this piston is produced reply action;
One assist gas pressure cylinder, its front side is provided with a deflation hole, and its inside has a piston, and this piston nose is established a spring, piston is produced reply action; This piston can promote the piston of aforementioned auxiliary oil hydraulic cylinder, and makes its action: and
One electromagnetic valve is the air pressure inlet that is arranged at this assist gas pressure cylinder, in order to control the action that pressurized air enters this assist gas pressure cylinder:
By above zero, unit construction, be can be, and make and should produce oil pressure by auxiliary oil hydraulic cylinder by the action of this assist gas pressure cylinder of this solenoid control, driving aforesaid boosting device, and reach the purpose of the action of control clutch.
Should auxiliary oil hydraulic cylinder be to be connected with a main oil pressure cylinder, this main oil pressure cylinder be driven by a pedal of clutch to produce oil pressure, and its oil pressure is after entering this auxiliary oil hydraulic cylinder, exports from the oil pressure of this auxiliary oil hydraulic cylinder and enters into this boosting device.
This assist gas pressure cylinder interior is divided into a back air-pressure chamber and an exhaust chamber by this piston, and this exhaust chamber deflation hole place is provided with a check valve, uses so that the air of the exhaust chamber of this assist gas pressure cylinder only can be discharged in the atmosphere by uniaxially; And an answer valve, be the exhaust chamber that whether can enter this assist gas pressure cylinder in order to the control outside air, when it is closed, be to make outside air can't enter this exhaust chamber.
This electromagnetic valve is to control its breakdown action by first switch; This answer valve is to control the action that it is closed by second switch.
Compare with located by prior art, good effect of the present utility model is:
Starter gear of the present utility model is to utilize air pressure to drive an auxiliary oil hydraulic cylinder, the original boosting device of oil pressure actuated that utilizes this auxiliary oil hydraulic cylinder to produce, and make this boosting device drive power-transfer clutch.Because this starter gear is with Pneumatic pressure operated, and be the action that utilizes its startup of solenoid control, therefore make steerman can utilize the action of button or other these starter gears of control interface control, to replace the function of pedal of clutch, institute is travelling on the urban district so that do not need to step on the dynamic clutch pedal during steerman gear shift and reach purpose, the especially steerman of saving muscle power, during gear shift, more can save a large amount of muscle power continually.
Description of drawings
Fig. 1 unitary construction scheme drawing of the present utility model;
The organigram of the assist gas pressure cylinder that Fig. 2 the utility model uses;
The organigram of the clutch power intensifying device that Fig. 3 commonly uses.
The specific embodiment
The utility model is for reaching above-mentioned and other purpose, and the technological means that it adopted, element and effect thereof are adopted a preferred embodiment now, and cooperates correlative type to be described in detail as follows.
The auxiliary actuating apparatus of clutch power intensifying device of the present utility model mainly is outside the clutch power intensifying device of commonly using, install a starter gear in addition, this starter gear is to utilize air pressure to drive an auxiliary oil hydraulic cylinder, the original boosting device of oil pressure actuated that utilizes this auxiliary oil hydraulic cylinder to produce, and make this boosting device drive power-transfer clutch.Because this starter gear is with Pneumatic pressure operated, and be the action that utilizes its startup of solenoid control, therefore make steerman can utilize the action of button or other these starter gears of control interface control, to replace the function of pedal of clutch, institute is not so that need to step on the dynamic clutch pedal during steerman gear shift, and reaches the purpose of saving muscle power.
As shown in Figure 1, the auxiliary actuating apparatus of clutch power intensifying device of the present utility model wherein mainly comprises: a boosting device 20, and an auxiliary actuating apparatus 30; Wherein the structure of this boosting device 20 is identical with the boosting device of commonly using, and it mainly includes a master cylinders 21, and these master cylinders 21 inside have an active piston 22, and its front side is provided with deflation hole 21a; This piston nose is established a push rod 23, and a spring 23a, can produce to reply action; This master cylinders 21 is to be connected with a compressed gas cylinder (not shown), and its air pressure inlet is provided with a control cock 50; And driving oil hydraulic cylinder 24, it is the front end that is arranged at this master cylinders 21, its inside has a piston 25, be promoted by this active piston 22, its front end has a push rod 26, be the power-transfer clutch (not shown) that is connected to automobile,, make the pressing plate of power-transfer clutch separate in order to drive this power-transfer clutch; And a pedal 27, be to drive a main oil pressure cylinder 28; And a spring 28a, be located at main oil pressure cylinder 28 interior forward end, pedal 27 is produced reply action; The outlet of this main oil pressure cylinder 28 is to be connected with this driving oil hydraulic cylinder 24 by pipeline, and can should drive the piston 25 of oil hydraulic cylinder 24 by its oil pressure actuated, in order to promoting this push rod 26, and makes the pressing plate of power-transfer clutch separate.In addition, this driving oil hydraulic cylinder 24 has an oil pressure passage 29, is the oil pressure some of this main oil pressure cylinder 28 to be directed into this control cock 50, in order to start this control cock 50.This control cock 50 is to be subjected to the oil pressure power driven, and becomes opening, and makes pressurized air promote active piston 22 among entering this main air cylinder 21, uses the generation auxiliary power, to drive this piston 25.
When the user stepped on dynamic clutch pedal 27, this boosting device 20 started by the oil pressure strength of this main oil pressure cylinder 28, so its manner of execution is identical with the clutch power intensifying device of commonly using.
The feature that the utility model is main, be to be that it has an auxiliary actuating apparatus 30 in addition, the structure of this auxiliary actuating apparatus 30 as shown in Figures 1 and 2, it mainly comprises: an assist gas pressure cylinder 31, be to drive by the air pressure of aforesaid compressed gas cylinder, its inside has a piston 32, is promoted and generation straight-line displacement forward by air pressure; And a push rod 33, be the front end that is arranged at this piston 32: and a spring 33a, be to be located at piston nose, can produce and reply action; And an auxiliary oil hydraulic cylinder 34, be the front end that is arranged at this assist gas pressure cylinder 31, these auxiliary oil hydraulic cylinder 34 inside have a piston 35, and this piston 35 is promoted by this push rod 33, and produces straight-line displacement: and a spring 35a, piston is produced reply action; And an electromagnetic valve 36, be arranged on the air pressure inlet of this assist gas pressure cylinder 31, enter among this assist gas pressure cylinder 31 in order to the control pressure gas; And oil pressure outlet 37, be the front end that is arranged at this auxiliary oil hydraulic cylinder 34, and it is to be connected with the driving oil hydraulic cylinder 24 of this boosting device 20; And oil pressure inlet 38, it is the side that is arranged at this auxiliary oil hydraulic cylinder 34, it is to be connected with the oil pressure outlet of aforementioned main oil pressure cylinder 28, and the oil pressure that can make main oil pressure cylinder 28 produce enters after this auxiliary oil hydraulic cylinder 34, enters among the aforesaid driving oil hydraulic cylinder 24 via this oil pressure outlet 37 again.
The manner of execution of this auxiliary actuating apparatus 30, be after entering among this assist gas pressure cylinder 31 by this electromagnetic valve 36 control pressurized airs, should assist the piston 35 of oil hydraulic cylinder 34 by the piston actuated of this assist gas pressure cylinder 31, should assist oil hydraulic cylinder 34 in-to-in working fluids and produce pressure by the pressure compression of this piston 35, and then be delivered to this driving oil hydraulic cylinder 24 via this oil pressure outlet 37 by the pressure of working fluid, and promote this driving oil hydraulic cylinder 24 in-to-in pistons 25 and control cock 50, therefore start this boosting device 20, and make boosting device 20 produce the action that drives power-transfer clutch.Therefore the utility model can replace the function of this pedal of clutch 27 and main oil pressure cylinder 28 by this auxiliary actuating apparatus 30, and can make steerman not need the action that disengage the clutch 27 just can control clutch.
Be the structure for the employed assist gas pressure cylinder 31 of the utility model as shown in Figure 2, the inside of this assist gas pressure cylinder 31 is to be a cylinder body, and is divided into a back air-pressure chamber 311 and an exhaust chamber 312 by this piston 32.Pressurized air is to enter among this back air-pressure chamber 311, advances towards exhaust chamber 312 and promote piston 32.In addition, the air of exhaust chamber 312 can be discharged when making that piston 32 advances, and the deflation hole 315 of this assist gas pressure cylinder 31 is provided with a check valve 313, with so that exhaust chamber 312 in-to-in air only can be discharged to the atmosphere from this exhaust chamber 312 by uniaxially.
This check valve 313 is only to make the air uniaxially be discharged to the atmosphere from exhaust chamber 312, and makes outside air can't enter among the exhaust chamber 312.This assist gas pressure cylinder draws and is provided with another one and (for example: flow regulating valve), when it is opened, be that outside air is entered among this exhaust chamber 312, and if it is when closing, just then outside air can't enter replys valve 314 in addition.As shown in Figure 2, this replys the effect of valve 314, be in the time of to make the piston 32 of assist gas pressure cylinder 31 be pushed to the front end dead point of stroke, closed by replying valve 314, make the exhaust chamber 312 of assist gas pressure cylinder 31 become vacuum state, make piston 32 can't be returned to the action reference position, therefore make auxiliary oil hydraulic cylinder 34 and driving oil hydraulic cylinder 24 remain on compressive state equally, and make the pressing plate of power-transfer clutch be maintained at open state.This answer valve 314 all is to keep open state in normal condition, therefore after making that 31 actions of assist gas pressure cylinder are finished, can be returned to the action reference position outright, yet needing operated clutch at some state as if steerman is with the progressive mode interlock, or during with half interlocking pattern operated clutch, then can reply the speed that the mode control air of opening discontinuously again after valve 314 cuts out enters into exhaust chamber 312 by this, so just can so that the piston of assist gas pressure cylinder 31 can not keep in the center immediately, but move in the mode that backs away, and make that clutch pressure plate can be with the progressive mode interlock.
The operation interface of auxiliary actuating apparatus 30 of the present utility model is provided with two master cocies, and one of them is first switch 39 in order to control electromagnetic valve 36; Another second switch 40 is in order to control this answer valve 314.When this first switch 39 is activated, is to make electromagnetic valve 36 open, and makes pressurized air enter among this assist gas pressure cylinder 31, and make this auxiliary actuating apparatus 30 be activated; And aforesaid answer valve 314 is by these second switch 40 controls, when second switch starts, is to make this answer valve 314 close.
Operating mode of the present utility model is when the user wants gear shift, just can directly press first switch 39, starts this electromagnetic valve 36, so that auxiliary actuating apparatus 30 produces oil pressure, produces the action that drives power-transfer clutch to drive this boosting device 20.And if the user does not utilize this auxiliary actuating apparatus 30, directly during let slip the clutch 27, then this boosting device 20 is the pressure-driven that directly are subjected to main oil pressure cylinder 28, and its manner of execution is identical with the manner of execution of the clutch power intensifying device of commonly using.
And if steerman is in vehicle ground zero or climbing need operate in half-clutch device mode the time, then can be after pressing first switch 39, before decontroling first switch 39, press second switch 40 earlier, make that replying valve 314 closes, and make assist gas pressure cylinder 31 can't be returned to original position immediately, and then control this second switch 40 in the mode that point is put, just can be so that power-transfer clutch with the progressive mode interlock, and reaches the purpose that half-clutch device mode is operated.
Claims (4)
1, a kind of auxiliary actuating apparatus of clutch power intensifying device in order to start a clutch power intensifying device, so that this boosting device produces the action that drives power-transfer clutch, is characterized in that including:
One auxiliary oil hydraulic cylinder is connected with this boosting device, and it has oil pressure outlet, and its inside has a piston, is to produce pressure by its in-to-in working fluid of this Piston Compression, produces action and drive this boosting device, this piston nose is provided with a spring, this piston is produced reply action;
One assist gas pressure cylinder, its front side is provided with a deflation hole, and its inside has a piston, and this piston nose is established a spring, piston is produced reply action; This piston can promote the piston of aforementioned auxiliary oil hydraulic cylinder, and makes its action; And
One electromagnetic valve is the air pressure inlet that is arranged at this assist gas pressure cylinder, in order to control the action that pressurized air enters this assist gas pressure cylinder;
By above zero, unit construction, be can be, and make and should produce oil pressure by auxiliary oil hydraulic cylinder by the action of this assist gas pressure cylinder of this solenoid control, driving aforesaid boosting device, and reach the purpose of the action of control clutch.
2, the auxiliary actuating apparatus of clutch power intensifying device according to claim 1, it is characterized in that: this auxiliary oil hydraulic cylinder is to be connected with a main oil pressure cylinder, this main oil pressure cylinder is driven by a pedal of clutch to produce oil pressure, and its oil pressure is after entering this auxiliary oil hydraulic cylinder, and the oil pressure outlet from this auxiliary oil hydraulic cylinder enters into this boosting device again.
3, the auxiliary actuating apparatus of clutch power intensifying device according to claim 1, it is characterized in that: this assist gas pressure cylinder interior is divided into a back air-pressure chamber and an exhaust chamber by this piston, this exhaust chamber deflation hole place is provided with a check valve, uses so that the air of the exhaust chamber of this assist gas pressure cylinder only can be discharged in the atmosphere by uniaxially; And an answer valve, be the exhaust chamber that whether can enter this assist gas pressure cylinder in order to the control outside air, when it is closed, be to make outside air can't enter this exhaust chamber.
4, the auxiliary actuating apparatus of clutch power intensifying device according to claim 1, it is characterized in that: this electromagnetic valve is to control its breakdown action by first switch; This answer valve is to control the action that it is closed by second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02231641 CN2545009Y (en) | 2002-04-25 | 2002-04-25 | Secondary starting device of clutch force-doubler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02231641 CN2545009Y (en) | 2002-04-25 | 2002-04-25 | Secondary starting device of clutch force-doubler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2545009Y true CN2545009Y (en) | 2003-04-16 |
Family
ID=33707310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02231641 Expired - Fee Related CN2545009Y (en) | 2002-04-25 | 2002-04-25 | Secondary starting device of clutch force-doubler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2545009Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345692A (en) * | 2011-09-27 | 2012-02-08 | 芜湖市安芜汽车制动元件有限公司 | Force-assisting system of automobile clutch |
| CN102537135A (en) * | 2012-02-21 | 2012-07-04 | 奇瑞汽车股份有限公司 | Automobile hydraulic clutch system and power assisting device for same |
| CN107989926A (en) * | 2017-10-26 | 2018-05-04 | 浙江科力车辆控制系统有限公司 | Clutch booster |
-
2002
- 2002-04-25 CN CN 02231641 patent/CN2545009Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345692A (en) * | 2011-09-27 | 2012-02-08 | 芜湖市安芜汽车制动元件有限公司 | Force-assisting system of automobile clutch |
| CN102537135A (en) * | 2012-02-21 | 2012-07-04 | 奇瑞汽车股份有限公司 | Automobile hydraulic clutch system and power assisting device for same |
| CN102537135B (en) * | 2012-02-21 | 2014-05-28 | 奇瑞汽车股份有限公司 | Automobile hydraulic clutch system and power assisting device for same |
| CN107989926A (en) * | 2017-10-26 | 2018-05-04 | 浙江科力车辆控制系统有限公司 | Clutch booster |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102015392B (en) | Hydraulic vehicle braking system | |
| US20060000208A1 (en) | Pump/motor operating mode switching control for hydraulic hybrid vehicle | |
| CN1795322A (en) | An engine with a plurality of operating modes including operation by compressed air | |
| CN1071868C (en) | Actuation systems and mechanisms | |
| US5507373A (en) | Clutch actuation mechanism | |
| CN106882173A (en) | The braking method of the parking brake system of dumper | |
| CN112026724A (en) | Jointly controllable loader brake system | |
| CN2545009Y (en) | Secondary starting device of clutch force-doubler | |
| CN1903603A (en) | Clutching method and device for vehicle motor and electric generator | |
| CN102171080A (en) | Central pressure supply for auxiliary drives of a motor vehicle | |
| US5469946A (en) | Clutch actuation system | |
| CN212332620U (en) | Loader braking system capable of being controlled in combined mode | |
| CN201187539Y (en) | Clutch electric control steering mechanism of vacuum power source and clutch for automobile | |
| CN101526115B (en) | Automatic control device of clutch of hydraulic hybrid-power bus | |
| CN2520272Y (en) | Electromagnetic device for slope second starting of motor vehicle | |
| CN205190569U (en) | Intelligent clutch actuating mechanism of mining car | |
| CN2334619Y (en) | Car braking energy-saving device | |
| CN201162794Y (en) | Automatic clutch control device of hydraulic pressure mixed power bus | |
| JP2602091Y2 (en) | Control device for auxiliary power take-out mechanism | |
| EP1213450B1 (en) | Compression brake actuation system and method | |
| JPS61175154A (en) | Decelerating energy recovering device in vehicle | |
| TW201400727A (en) | Backup braking system of mobile vehicle with multiple medium pressure sources | |
| CN110273939B (en) | Pneumatic clutch and pneumatic clutch control system with same | |
| CN2165048Y (en) | Electric control hydraulic automatic brake device for automobile | |
| JP2700313B2 (en) | Clutch control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |