CN201246361Y - Closed-loop controlled high precision digital type synchronous valve - Google Patents
Closed-loop controlled high precision digital type synchronous valve Download PDFInfo
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- CN201246361Y CN201246361Y CNU2008200302092U CN200820030209U CN201246361Y CN 201246361 Y CN201246361 Y CN 201246361Y CN U2008200302092 U CNU2008200302092 U CN U2008200302092U CN 200820030209 U CN200820030209 U CN 200820030209U CN 201246361 Y CN201246361 Y CN 201246361Y
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Abstract
The utility model discloses a high-precision digital synchro-valve controlled by a closed loop, comprising a control valve and an electromagnetic reversal valve, wherein, the control valve comprises a valve body and a valve core moving in a horizontal rectilinear direction; a stepping motor drives the valve core through a mechanical driving shaft which is provided with a zero position sensor; two symmetric oil circuits are formed by the two shunt openings and the oil liquid inlet which are formed on the valve body; the openness of the shunt openings is adjusted by the left-right shifts of the valve core; the oil liquid inlet is communicated with the oil supply passage of the electromagnetic reversal valve; the shunt openings are connected with the oil inlet of a hydraulic operated execution machine and is communicated with the return oil loop of the electromagnetic reversal valve; a digital displacement sensor is mounted on the output shaft of the hydraulic operated machine; both the digital displacement sensor and the zero position sensor are connected with a digital synchronous controller; and the digital synchronous controller is connected with the stepping motor and the electromagnetic reversal valve respectively. The high-precision digital synchro-valve has the advantages that the structure is simple; the processing, the application and the operation are simple and convenient; the manufacturing cost and the operation cost are lower; the anti-oil pollution ability is high; the reliability and the control accuracy are high; and the synchronism is good.
Description
Technical field
The utility model relates to Hydraulic Synchronizing actuation techniques field, especially relates to a kind of high-precision digital synchronous valve of closed loop control.
Background technique
Existing hydraulic synchronous driving system has open loop control and two kinds of controlling schemes of closed loop control, it is a kind of open loop controlling schemes that currently used biliquid based on shunting-combiner valve is pressed executive component (oil hydraulic motor/hydraulic jack) synchronous driving system, though its cost simple in structure is low, but its synchronization accuracy is relatively poor, dynamically the time, can not guarantee speed synchronization, more difficult realization position synchronous.A kind of dynamic multi-cylinder synchronous coordination valve that can Automatic Control is disclosed in the disclosed utility model patent on December 27th, 2000 " a kind of high-precise synchronization coordination valve ", it belongs to electric-the hydraulic pressure close-loop control scheme, static state can not only be realized synchronously, and dynamic synchronization can be realized.But what this patent scheme adopted the driving that is subjected to control slide valve is torque motor and nozzle-baffle mechanism, and the complex structure manufacturing is hard on, and to the clean level sensitivity of fluid, make and operating cost all very high.
The model utility content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of high-precision digital synchronous valve of closed loop control is provided, it is simple in structure, process and use easy and simple to handle, not only make and operating cost lower, and anti-oil contamination ability by force, reliability and control accuracy height, net synchronization capability be good.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of high-precision digital synchronous valve of closed loop control, comprise control valve and the solenoid directional control valve that joins with it, it is characterized in that: described control valve is made up of the spool of making horizontal rectilinear motion in valve body and the valve pocket in valve body, described spool is directly driven by the Mechanical Driven axle by stepper motor, on the described Mechanical Driven axle null pick-up is installed; Have a fluid import and two split-flow openings that communicate with the fluid import respectively on the described valve body, the fluid import is confluxed-bleed off circuit with two two of split-flow openings compositions respectively, described two conflux-bleed off circuit is symmetrical distribution, the opening amount of two split-flow openings is regulated by the move left and right of spool; Described fluid import communicates with the fuel feeding road of solenoid directional control valve by pipeline, split-flow opening joins with two filler openings of carrying out machinery that surge respectively by pipeline, and the oil outlet of described two execution machineries that surge joins by pipeline and all communicates with the oil circuit of solenoid directional control valve; On the described mechanical output shaft that surges of carrying out machinery that surges digital displacement sensor is installed, digital displacement sensor and null pick-up all connect the digital synchronous controller, and the digital synchronous controller connects stepper motor and solenoid directional control valve respectively.
Described control valve is guiding valve or rotary valve, and solenoid directional control valve is a three position four-way electromagnetic valve.。
The fluid import of described guiding valve be arranged on valve body above or below, two split-flow opening correspondences are arranged on the opposite side of valve body, two symmetries confluxed-bleed off circuit about the fluid import was formed with two split-flow openings respectively.
The spool of described guiding valve is single boss structure, its middle part is provided with the boss of a described valve pocket of the horizontal shutoff of energy and respectively the opening amount of two split-flow openings is regulated by two outer ends about described boss, described boss is provided with over against the fluid import, two confluxing-bleed off circuit about described boss symmetry about fluid import and two split-flow openings are formed.
The spool of described guiding valve is the double polarizing keys structure, it is provided with the boss of two described valve pockets of the horizontal shutoff of energy, two boss lay respectively at the fluid import left and right sides and respectively the opening amount of two split-flow openings are regulated by the inner end of two boss, fluid import and two split-flow openings the confluxing-bleed off circuit of two symmetries about forming between described two boss.
The spool of described guiding valve is three boss structures, and its boss and three boss that are provided with three described valve pockets of the horizontal shutoff of energy are followed successively by left boss, middle boss and right boss from left to right; Boss is regulated the opening amount of two split-flow openings respectively over against fluid import setting and by the inner end of left boss and right boss in described, and fluid import and two split-flow openings be the confluxing-bleed off circuit of two symmetries about forming between left boss and convexity interstation, middle boss and right boss respectively.
The fluid import of described rotary valve be arranged on valve body above or below, two split-flow openings are separately positioned on the above and below of valve body and the two over against setting, the fluid import is formed confluxing-bleed off circuit of two symmetries up and down with two split-flow openings respectively.
Corresponding fluid import and split-flow opening are respectively arranged with two vertical passages on the spool of described rotary valve.
Described surging carried out mechanical be oil hydraulic motor or hydraulic jack.
Described Mechanical Driven axle is screw rod or leading screw, and screw rod is fixed on a side of spool threadably, and the opposite side of spool is provided with guarantees that spool makes the guider of horizontal rectilinear motion in valve body.
The utility model compared with prior art has the following advantages, 1, simple in structure, process and use easy and simple to handlely, adopt the guiding valve or the rotary valve of simple big opening amount, antijamming capability is strong, thereby manufacturing and operating cost are lower; 2, the control mode that adopts high-precision digital directly to drive is that two hydraulic actuators are that hydraulic actuator (hydraulic jack/oil hydraulic motor) provides synchronization control, and adopts digital closed loop control, the reliability height; 3, control accuracy height, error is little, and net synchronization capability is good; 4, applied widely, not only can be used for big flow, long-travel high-accuracy twin-tub (as the lifting of large-scale gate) synchronously, and can be used for the synchronization control of the aeronautical technology that requirement is in light weight, precision is high, reliability is high, as the variable swept back wing mechanism of aircraft.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the utility model first preferred implementation.
Fig. 2 is the structural representation of the utility model second preferred implementation.
Fig. 3 is the structural representation of the utility model the 3rd preferred implementation.
Fig. 4 is the structural representation of the utility model the 4th preferred implementation.
Description of reference numerals:
1-solenoid directional control valve; 2-valve body; 3-spool;
4-screw rod; 5-split-flow opening; 6-oil hydraulic motor;
7-digital displacement sensor; 8-digital synchronous controller; 9-stepper motor;
10-mechanical output shaft surges; 11-null pick-up; 12-guider;
13-just change filler opening; 14-just produce hydraulic fluid port; The import of 15-fluid.
Embodiment
As shown in Figure 1, the solenoid directional control valve 1 that the utility model comprises control valve and joins with it, wherein, described control valve is made up of the spool 3 of making horizontal rectilinear motion in valve body 2 and the valve pocket in valve body 2.Described spool 3 is directly driven by the Mechanical Driven axle by stepper motor 9, in the present embodiment, its Mechanical Driven axle is a screw rod 4, and screw rod 4 is fixed on a side of spool 3 threadably, and the opposite side of spool 3 is provided with and guarantees that spool 3 makes the guider 12 of horizontal rectilinear motion in valve body 2.In the practice, the Mechanical Driven axle also can be leading screw.In addition, described Mechanical Driven axle is that null pick-up 11 is installed on the screw rod 4.Described surging carried out mechanical be oil hydraulic motor 6 or hydraulic jack, and what adopt in the present embodiment is oil hydraulic motor 6.
Have a fluid import 15 (being the P mouth) and two split-flow openings 5 that communicate with fluid import 15 respectively (being A, B mouth) on the described valve body 2, fluid import 15 is confluxed-bleed off circuit (being P-A and P-B) with two split-flow openings, 5 two of compositions respectively, described two conflux-bleed off circuit is symmetrical distribution, and the opening amount of two split-flow openings 5 is regulated by the move left and right of spool 3.Described fluid import 15 communicates with the fuel feeding road of solenoid directional control valve 1 by pipeline, two split-flow openings join with two filler openings 13 of carrying out machinery that surge respectively by pipeline, and the oil outlet 14 of described two execution machineries that surge joins by pipeline and all communicates with the oil circuit of solenoid directional control valve 1.On the described mechanical output shaft 10 that surges of carrying out machinery that surges digital displacement sensor 7 is installed, digital displacement sensor 7 and null pick-up 11 all connect digital synchronous controller 8 and the two is sent to digital synchronous controller 8 with its real-time detected signal respectively; Simultaneously, digital synchronous controller 8 connects stepper motor 9 and solenoid directional control valve 1 respectively, promptly realize the control by 8 pairs of stepper motors 9 of digital synchronous controller and solenoid directional control valve 1, and solenoid directional control valve 1 is a three position four-way electromagnetic valve.
In the present embodiment, described control valve is a guiding valve, and the fluid import 15 of guiding valve is arranged on the below of valve body 2, and the opposite side that described two split-flow opening 5 correspondences are arranged on valve body 2 is the top, and two symmetries confluxed-bleed off circuit about fluid import 15 was formed with two split-flow openings 5 respectively.In the practice, also the position of fluid import 15 and two split-flow openings 5 can be exchanged, be about to the top that fluid import 15 is arranged on valve body 2, described two split-flow opening 5 correspondences are arranged on the below of valve body 2.In addition, in the present embodiment, the spool 3 of described guiding valve is single boss structure, its middle part is provided with the boss of a described valve pocket of the horizontal shutoff of energy and respectively the opening amount of two split-flow openings 5 is regulated by two outer ends about described boss, described boss is provided with over against fluid import 15, two confluxing-bleed off circuit about described boss symmetry about fluid import 15 and described two split-flow openings 5 are formed.
Working procedure of the present utility model is: behind the electrifying startup, solenoid directional control valve 1 stop position that mediates, digital synchronous controller 8 detect the initial state of null pick-ups 11 and spool 3 recurrence zero-bits that corresponding control step motor 9 directly drives synchronization motion; And when the fuel feeding task is just being changeed in solenoid directional control valve 1 execution, the electromagnetic coil on solenoid directional control valve 1 left side is connected and is made its inside make spool be in right position state, this moment, pressure oil Ps communicated with the fuel feeding road on the left side, the right position of solenoid directional control valve 1 inner spool, oil circuit Po communicates with right oil circuit, at this moment, pressure oil Ps is the P mouth and then enters valve body 2 inner valve pockets by the fluid import 15 that the fuel feeding road is communicated with control valve, again because spool 3 is divided into two-way (being P-A and P-B) with the pressure oil that valve body 2 will enter the P mouth.Simultaneously, on the valve body 2 about two tap holes 5 be communicated with the just commentaries on classics filler opening 13 of two oil hydraulic motors 6 respectively, oil hydraulic motor 6 is just being changeed; About two oil circuits that just produce hydraulic fluid port 14 of two oil hydraulic motors 6 compile back (being oil circuit Po) and communicate with a right right oil circuit of solenoid directional control valve 1, thereby constitute complete hydraulic work loop.
And about digital displacement transducer 7 is installed on the mechanical output shaft 10 that surges on two oil hydraulic motors 6, specifically be that the mechanical output shaft 10 that surges is connected with the movable input end of digital displacement transducer 7.Two digital displacement transducers 7 are all exported displacement pulse signals in real time to digital synchronous controller 8, count respectively by the programmable counter (PC1, PC2) of digital synchronous controller 8 again, while digital synchronous controller 8 subtraction E=PC1-PC2, the difference that dynamically compares PC1 and PC2, thereby the sync state of two oil hydraulic motors 6 about monitoring in real time.
When spool 3 is in zero-bit, two conflux-the opening amount of bleed off circuit (being P-A and P-B) equates that pressure oil Ps is diverted to 6 synchronous operations of two oil hydraulic motors, 6, two oil hydraulic motors through described control valve equivalent.If owing to the load of two oil hydraulic motors 6 does not wait or other reason when making oil hydraulic motor 6 positional error occur, digital synchronous controller 8 detects error.The position of supposing left hydraulic motor 6 is ahead of right hydraulic motor 6 a little, be difference E〉0 o'clock, digital synchronous controller 8 is according to difference E and through the PID computing, control step motor 9 directly drives spool 3 minute movement to the right, regulate the opening amount of two split-flow openings 5, the flow that makes pressure oil Ps enter left hydraulic motor 6 reduces and the flow that enters right hydraulic motor 6 increases, thereby the rotating speed of left hydraulic motor 6 is slightly reduced, the rotating speed of right hydraulic motor 6 slightly increases accordingly, makes that finally the rotating speed trend of two oil hydraulic motors 6 is synchronous.Otherwise, when right hydraulic motor 6 is ahead of left hydraulic motor 6 a little, it is difference E＜0 o'clock, digital synchronous controller 8 is according to difference E and through the PID computing, control step motor 9 directly drives spool 3 minute movement left, regulate two split-flow opening 5 opening amounts, the flow that enters left hydraulic motor 6 thereby the flow that makes pressure oil Ps enter right hydraulic motor 6 reduces increases, the rotating speed of right hydraulic motor 6 is slightly reduced, and the rotating speed of left hydraulic motor 6 slightly increases, and makes that finally the rotating speed trend of two oil hydraulic motors 6 is synchronous.
In like manner, also can realize the counter-rotating of above-mentioned two oil hydraulic motors 6 by the utility model, its synchronous control mode is identical with above-mentioned control mode.
That is to say, in the utility model, two of valve body 2 and spool 3 formation couplings and symmetry conflux-bleed off circuit (being P-A and P-B), the fluid power of surging of two oil circuits of flowing through is subdued mutually, stepper motor 9 directly drives spool 3 by screw rod 4, and under the constraint of guider 12, move axially about making spool 3 to do, change the opening amount size of two split-flow openings 5 by this, then change the fluid flow of two paths (being P-A, P-B) of flowing through, the synchronous guiding valve that final formation is directly driven by digital stepper motor 9.Specifically: two hydraulic actuators that digital synchronous controller 8 feeds back according to digital displacement sensor 7 promptly surge and carry out the synchronization error signal of machinery (being hydraulic jack/oil hydraulic motor 6), transmission that the spool 3 of corresponding control step motor 9 drive screws 4 and band nut is formed and the size of adjusting two split-flow opening 5 opening amounts, the flow through fluid flow of two paths (P-A, P-B) of corresponding change, eliminate the synchronization error of two hydraulic actuators (being hydraulic jack/oil hydraulic motor 6), thereby form direct digital closed loop control system.The opening amount of split-flow opening 5 is then chosen big as far as possible opening amount under the prerequisite that guarantees synchronous control accuracy, to reduce restriction loss and to strengthen contamination resistance.
As shown in Figure 2, present embodiment and embodiment's 1 difference part is: the spool 3 of described guiding valve is the double polarizing keys structure, it is provided with the boss of two described valve pockets of the horizontal shutoff of energy, two boss lay respectively at fluid import 15 left and right sides and respectively the opening amount of two split-flow openings are regulated by the inner end of two boss, fluid import 15 and two split-flow openings 5 the confluxing-bleed off circuit of two symmetries about forming between described two boss.In the present embodiment, the structure of other parts, control mode and function are all identical with embodiment 1.
As shown in Figure 3, present embodiment and embodiment's 1 difference part is: the spool 3 of described guiding valve is three boss structures, and its boss and three boss that are provided with three described valve pockets of the horizontal shutoff of energy are followed successively by left boss, middle boss and right boss from left to right.Boss is provided with and respectively the opening amount of two split-flow openings is regulated by the inner end of left boss and right boss over against fluid import 15 in described, and fluid import 15 and two split-flow openings be the confluxing-bleed off circuit of two symmetries about forming between left boss and convexity interstation, middle boss and right boss respectively.In the present embodiment, the structure of other parts, control mode and function are all identical with embodiment 1.
As shown in Figure 4, present embodiment and embodiment's 1 difference part is: described control valve is a rotary valve, and the fluid import 15 of described rotary valve is arranged on the below of valve body 2, two split-flow openings 5 are separately positioned on the above and below of valve body 2 and the two over against setting, and fluid import 15 is formed confluxing-bleed off circuit of two symmetries up and down with two split-flow openings 5 respectively.Corresponding fluid import 15 and two split-flow openings 5 are respectively arranged with two vertical passages on the spool 3 of described rotary valve, directly drive spool 3 move left and right by stepper motor 9, thereby the vertical passage that makes corresponding two split-flow openings 5 open is continuous and two dislocation that split-flow openings 5 produce in various degree, further changes the opening amount of two split-flow openings 5 then.
To sum up, control valve of the present utility model can be guiding valve, also can be rotary valve, and the spool 3 of guiding valve can be single boss, double polarizing keys or three boss structures, and described boss is a nut.In the practical application, so long as the spool form of two oil circuit shunt structure symmetries, under the comprehensive mating reaction of digital synchronous controller 8, digital displacement sensor 7 and null pick-up 11, just can constitute the digital accurate synchronous hydraulic valve that stepper motor 9 directly drives.Not only oil hydraulic motor 6 can be driven, also hydraulic jack can be driven.Utilize digital transducer, digital synchronous controller 8 to constitute the principle that digital stepper motor directly drives the synchronous hydraulic valve, can also the accurate synchronous hydraulic system of framework multi-cylinder.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (10)
1. the high-precision digital synchronous valve of a closed loop control, the solenoid directional control valve that comprises control valve and join (1) with it, it is characterized in that: described control valve is made up of the spool (3) of making horizontal rectilinear motion in valve body (2) and the valve pocket in valve body (2), described spool (3) is directly driven by the Mechanical Driven axle by stepper motor (9), and null pick-up (11) is installed on the described Mechanical Driven axle; Have a fluid import (15) and two split-flow openings (5) that communicate with fluid import (15) respectively on the described valve body (2), fluid import (15) is confluxed-bleed off circuit with two of two split-flow openings (5) compositions respectively, described two conflux-bleed off circuit is symmetrical distribution, the opening amount of two split-flow openings (5) is regulated by the move left and right of spool (3); Described fluid import (15) communicates by the fuel feeding road of pipeline with solenoid directional control valve (1), split-flow opening (5) joins with two filler openings (13) of carrying out machinery that surge respectively by pipeline, and the oil outlet (14) of described two execution machineries that surge joins by pipeline and all communicates with the oil circuit of solenoid directional control valve (1); On the described mechanical output shaft (10) that surges of carrying out machinery that surges digital displacement sensor (7) is installed, digital displacement sensor (7) and null pick-up (11) all connect digital synchronous controller (8), and digital synchronous controller (8) connects stepper motor (9) and solenoid directional control valve (1) respectively.
2. according to the high-precision digital synchronous valve of the described a kind of closed loop control of claim 1, it is characterized in that: described control valve is guiding valve or rotary valve, and solenoid directional control valve (1) is a three position four-way electromagnetic valve.
3. according to the high-precision digital synchronous valve of the described a kind of closed loop control of claim 2, it is characterized in that: the fluid import (15) of described guiding valve be arranged on valve body (2) above or below, two split-flow openings (5) correspondence is arranged on the opposite side of valve body (2), and two symmetries confluxed-bleed off circuit about fluid import (15) was formed with two split-flow openings (5) respectively.
4. according to the high-precision digital synchronous valve of the described a kind of closed loop control of claim 3, it is characterized in that: the spool of described guiding valve (3) is single boss structure, its middle part is provided with the boss of a described valve pocket of the horizontal shutoff of energy and respectively the opening amount of two split-flow openings (5) is regulated by two outer ends about described boss, described boss is provided with over against fluid import (15), two confluxing-bleed off circuit about described boss symmetry about fluid import (15) and two split-flow openings (5) are formed.
5. according to the high-precision digital synchronous valve of the described a kind of closed loop control of claim 3, it is characterized in that: the spool of described guiding valve (3) is the double polarizing keys structure, it is provided with the boss of two described valve pockets of the horizontal shutoff of energy, two boss lay respectively at fluid import (15) left and right sides and respectively the opening amount of two split-flow openings (5) are regulated by the inner end of two boss, fluid import (15) and two split-flow openings (5) the confluxing-bleed off circuit of two symmetries about forming between described two boss.
6. according to the high-precision digital synchronous valve of the described a kind of closed loop control of claim 3, it is characterized in that: the spool of described guiding valve (3) is three boss structures, and its boss and three boss that are provided with three described valve pockets of the horizontal shutoff of energy are followed successively by left boss, middle boss and right boss from left to right; Boss is provided with and respectively the opening amount of two split-flow openings (5) is regulated by the inner end of left boss and right boss over against fluid import (15) in described, and fluid import (15) and two split-flow openings (5) are respectively in the confluxing-bleed off circuit of two symmetries about composition between left boss and convexity interstation, middle boss and right boss.
7. according to the high-precision digital synchronous valve of the described a kind of closed loop control of claim 2, it is characterized in that: the fluid import (15) of described rotary valve be arranged on valve body (2) above or below, two split-flow openings (5) are separately positioned on the above and below of valve body (2) and the two over against setting, and fluid import (15) is formed confluxing-bleed off circuit of two symmetries up and down with two split-flow openings (5) respectively.
8. according to the high-precision digital synchronous valve of the described a kind of closed loop control of claim 7, it is characterized in that: the spool of described rotary valve (3) is gone up corresponding fluid import (15) and split-flow opening (5) is respectively arranged with two vertical passages.
9. according to the high-precision digital synchronous valve of the described a kind of closed loop control of each claim in the claim 1 to 8, it is characterized in that: described surging carried out mechanical be oil hydraulic motor (6) or hydraulic jack.
10. according to the high-precision digital synchronous valve of the described a kind of closed loop control of each claim in the claim 1 to 8, it is characterized in that: described Mechanical Driven axle is screw rod (4) or leading screw, screw rod (4) is fixed on a side of spool (3) threadably, and the opposite side of spool (3) is provided with guarantees that spool (3) makes the guider (12) of horizontal rectilinear motion in valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200302092U CN201246361Y (en) | 2008-09-05 | 2008-09-05 | Closed-loop controlled high precision digital type synchronous valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200302092U CN201246361Y (en) | 2008-09-05 | 2008-09-05 | Closed-loop controlled high precision digital type synchronous valve |
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| Publication Number | Publication Date |
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| CN201246361Y true CN201246361Y (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200302092U Expired - Fee Related CN201246361Y (en) | 2008-09-05 | 2008-09-05 | Closed-loop controlled high precision digital type synchronous valve |
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| CN (1) | CN201246361Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216476A (en) * | 2012-01-20 | 2013-07-24 | 杨世祥 | Motor driven servo valve |
| CN109780295A (en) * | 2018-12-29 | 2019-05-21 | 山东欧泰隆重工有限公司 | A kind of hydraulic valve by step motor control |
| CN113357352A (en) * | 2021-06-18 | 2021-09-07 | 中国第一汽车股份有限公司 | Cooling control valve, control method, dual-clutch transmission cooling system and vehicle |
-
2008
- 2008-09-05 CN CNU2008200302092U patent/CN201246361Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216476A (en) * | 2012-01-20 | 2013-07-24 | 杨世祥 | Motor driven servo valve |
| CN109780295A (en) * | 2018-12-29 | 2019-05-21 | 山东欧泰隆重工有限公司 | A kind of hydraulic valve by step motor control |
| CN113357352A (en) * | 2021-06-18 | 2021-09-07 | 中国第一汽车股份有限公司 | Cooling control valve, control method, dual-clutch transmission cooling system and vehicle |
| CN113357352B (en) * | 2021-06-18 | 2023-02-21 | 中国第一汽车股份有限公司 | Cooling control valve, control method, dual-clutch transmission cooling system and vehicle |
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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 |
Granted publication date: 20090527 Termination date: 20160905 |
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| CF01 | Termination of patent right due to non-payment of annual fee |