KR200216716Y1 - Shift valve for hydraulic circuit - Google Patents
Shift valve for hydraulic circuit Download PDFInfo
- Publication number
- KR200216716Y1 KR200216716Y1 KR2019970044400U KR19970044400U KR200216716Y1 KR 200216716 Y1 KR200216716 Y1 KR 200216716Y1 KR 2019970044400 U KR2019970044400 U KR 2019970044400U KR 19970044400 U KR19970044400 U KR 19970044400U KR 200216716 Y1 KR200216716 Y1 KR 200216716Y1
- Authority
- KR
- South Korea
- Prior art keywords
- port
- ports
- valve
- hydraulic
- land
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
- F16H2061/0253—Details of electro hydraulic valves, e.g. lands, ports, spools or springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
본 고안의 목적은 제어되는 밸브의 스트로크를 검증하여 이에 상응하도록 제어압을 재제어하여 공급되는 유압을 정밀하게 형성하므로 유압 페일이나, 주행중 변속 쇽크를 저감시키는 유압 회로용 시프트 밸브를 제공하는 것이다.It is an object of the present invention to provide a hydraulic valve or a hydraulic valve shift valve that reduces a transmission shank while driving, since the hydraulic pressure supplied is precisely formed by re-controlling the control pressure corresponding to verifying the stroke of the controlled valve.
본 고안에 따른 유압 회로용 시프트 밸브는 일측으로 공급되는 유압을 2곳 중 1곳에 선택적으로 공급하거나 차단시킬 수 있도록 각각 배치되는 제1,2,3포트;The hydraulic valve shift valve according to the present invention is the first, second, and third ports respectively disposed to selectively supply or cut off the hydraulic pressure supplied to one side of the two places;
상기 제1,2포트 또는 제1,3포트의 연통을 단속하도록 복수의 랜드로 구성되어 탄성부재에 지지되는 밸브 스풀;A valve spool composed of a plurality of lands supported by the elastic member to interrupt the communication between the first and second ports or the first and third ports;
상기 밸브 스풀을 지지하는 탄성부재에 저항하도록 트랜스밋션 제어유닛(TCU)에 의하여 제어된 제어압이 공급되어 밸브 스풀의 일측에 작용하는 제4포트;A fourth port supplied with a control pressure controlled by a transmission control unit (TCU) to resist the elastic member supporting the valve spool and acting on one side of the valve spool;
상기 제1,2포트, 제1,3포트가 각각 연통 또는 제1포트가 차단되도록 밸브 스풀이 이동될 때, 이를 감지하여 트랜스밋션 제어유닛(TCU)에 그 신호를 인가시켜 제4포트로 공급되는 유압을 재제어할 수 있게 하는 제1,2,3센서를 포함하여 구성된다.When the valve spool is moved so that the first port, the first port, and the second port communicate with each other or the first port is blocked, it detects this and applies the signal to the transmission control unit (TCU) to supply the fourth port. And first, second, and third sensors to re-control the hydraulic pressure.
Description
본 고안은 유압 회로용 시프트 밸브에 관한 것으로서, 보다 상세하게는 유압을 정밀하게 제어하여 주행시 변속 쇽크를 저감시키도록 형성된 유압이 정확한 가를 검증하고 자체 진단 후 조정된 유압을 형성케 하는 유압 회로용 시프트 밸브에 관한 것이다.The present invention relates to a shift valve for a hydraulic circuit, and more particularly, a hydraulic circuit shift for precisely controlling the hydraulic pressure to verify that the hydraulic pressure formed to reduce the shift shank during driving is accurate and to form an adjusted hydraulic pressure after self-diagnosis. It is about a valve.
일반적으로 자동변속기를 제어하는 유압 제어 시스템은 각종 시프트 밸브와 압력 컨트롤 밸브, 매뉴얼 밸브, 시프트 밸브, 레귤레이터 밸브 등을 구비하여 유압 회로를 형성하고 있다.In general, a hydraulic control system for controlling an automatic transmission includes various shift valves, pressure control valves, manual valves, shift valves, regulator valves, and the like to form a hydraulic circuit.
이와 같이 유압 회로에 사용되는 각종 밸브 중 시프트 밸브는 일측으로 공급되는 유압에 의하여 제어되면서 유로를 선택하도록 구성되고, 압력 컨트롤 밸브는 트랜스밋션 제어유닛(TCU)이 솔레노이드 밸브를 듀티 제어함에 따라 작용하는 듀티 제어압에 의하여 작동되면서 공급되는 유압을 제어하도록 구성된다.As such, the shift valve of the various valves used in the hydraulic circuit is configured to select the flow path while being controlled by the hydraulic pressure supplied to one side, and the pressure control valve acts as the transmission control unit (TCU) controls the solenoid valve duty. It is configured to control the hydraulic pressure supplied while being operated by the duty control pressure.
그러나 상기와 같은 유압 회로용 시프트 밸브 및 압력 컨트롤 밸브는 어떤 유압에 의하여 제어되어 이에 따라 형성된 유로로 단순히 유압을 공급하기 때문에 공급되는 유압이 적정 압력을 가지고 공급되는지 검증되지 않아 경우에 따라서는 유압 페일을 일으킬 수도 있고, 주행시 정밀 제어가 되지 않아 변속 쇽크를 발생시킬 우려가 있다.However, since the above-described hydraulic circuit shift valve and pressure control valve are controlled by a certain hydraulic pressure and simply supply hydraulic pressure to a flow path formed accordingly, it is not verified that the hydraulic pressure supplied is supplied with an appropriate pressure. It may cause a shifting shank due to lack of precision control during driving.
따라서 본 고안은 상기와 같은 단점을 해소하기 위하여 안출된 것으로서, 본 고안의 목적은 제어되는 밸브의 스트로크를 검증하여 이에 상응하도록 제어압을 재제어하여 공급되는 유압을 정밀하게 형성하므로 유압 페일이나, 주행중 변속 쇽크를 저감시키는 유압 회로용 시프트 밸브를 제공하는 것이다.Therefore, the present invention is devised to solve the above disadvantages, the object of the present invention is to verify the stroke of the valve to be controlled so that the hydraulic pressure is precisely formed by re-controlling the control pressure to correspond to the hydraulic fail, It is to provide a shift valve for a hydraulic circuit which reduces a shift shank while driving.
도 1은 본 고안에 관련하는 유압 회로용 시프트 밸브의 제1상태를 도시한 구성도이다.1 is a configuration diagram showing a first state of a shift valve for a hydraulic circuit according to the present invention.
도 2는 본 고안에 관련하는 유압 회로용 시프트 밸브의 제2상태를 도시한 구성도이다.2 is a configuration diagram showing a second state of a shift valve for a hydraulic circuit according to the present invention.
도 3은 본 고안에 관련하는 유압 회로용 시프트 밸브의 제3상태를 도시한 구성도이다.3 is a configuration diagram showing a third state of a hydraulic valve shift valve according to the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
3,5,7,21:제1,2,3,4포트 9:밸브 스풀 11,13,15,17:제1,2,3,4랜드 19:탄성부재 23,25,27:제1,2,3센서3,5,7,21: 1st, 2nd, 3rd, 4th port 9: Valve spool 11, 13, 15, 17: 1st, 2nd, 3rd, 4th land 19: Elastic member 23, 25, 27: 1st 2,3 sensors
이를 실현하기 위하여 본 고안에 따른 유압 회로용 시프트 밸브는To realize this, the shift valve for the hydraulic circuit according to the present invention is
일측으로 공급되는 유압을 2곳 중 1곳에 선택적으로 공급하거나 차단시킬 수 있도록 각각 배치되는 제1,2,3포트;First, second, and third ports respectively disposed to selectively supply or shut off the hydraulic pressure supplied to one side;
상기 제1,2포트 또는 제1,3포트의 연통을 단속하도록 복수의 랜드로 구성되어 탄성부재에 지지되는 밸브 스풀;A valve spool composed of a plurality of lands supported by the elastic member to interrupt the communication between the first and second ports or the first and third ports;
상기 밸브 스풀을 지지하는 탄성부재에 저항하도록 트랜스밋션 제어유닛(TCU)에 의하여 제어된 제어압이 공급되어 밸브 스풀의 일측에 작용하는 제4포트;A fourth port supplied with a control pressure controlled by a transmission control unit (TCU) to resist the elastic member supporting the valve spool and acting on one side of the valve spool;
상기 제1,2포트, 제1,3포트가 각각 연통 또는 제1포트가 차단되도록 밸브 스풀이 이동될 때, 이를 감지하여 트랜스밋션 제어유닛(TCU)에 그 신호를 인가시켜 제4포트로 공급되는 유압을 재제어할 수 있게 하는 감지수단을 포함한다.When the valve spool is moved so that the first port, the first port, and the second port communicate with each other or the first port is blocked, it detects this and applies the signal to the transmission control unit (TCU) to supply the fourth port. And sensing means for re-controlling the hydraulic pressure.
상술한 바와 같이 구성되는 유압 회로용 시프트 밸브는 감지수단의 감지신호로부터 밸브 스풀의 제어 스트로크를 판단하여 제2,3포트로 공급되는 유압을 검증하므로 제4포트의 제어압을 재제어하여 제2,3포트로 공급되는 유압을 정밀하게 제어한다.Since the shift valve for the hydraulic circuit configured as described above verifies the hydraulic pressure supplied to the second and third ports by judging the control stroke of the valve spool from the detection signal of the sensing means, the control pressure of the fourth port is re-controlled so that the second Precisely control the hydraulic pressure supplied to 3 ports.
이하 본 고안의 바람직한 실시예를 첨부한 도면에 의거하여 보다 상세히 설명한다.BEST MODE Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 고안에 관련하는 유압 회로용 시프트 밸브의 제1상태를 도시한 구성도로서, 일측으로 공급되는 유압에 의하여 제어되어 다른으로 공급되는 유압을 또 다른 2곳 중 일측으로 공급 및 차단시킬 수 있도록 구성된다.1 is a configuration diagram showing a first state of a shift valve for a hydraulic circuit according to the present invention, which is controlled by the hydraulic pressure supplied to one side to supply and shut off the hydraulic pressure supplied to the other two places It is configured to be.
즉, 이 시프트 밸브(1)는 유압을 공급받는 제1포트(3), 이 제1포트(3)로 공급되는 유압을 선택적으로 공급 및 차단하는 제2,3포트(5,7)를 갖는다.That is, this shift valve 1 has the 1st port 3 which receives hydraulic pressure, and the 2nd, 3rd ports 5 and 7 which selectively supply and interrupt | shut off the oil pressure supplied to this 1st port 3, and the like. .
이러한 제1,2포트(3,5) 또는 제1,3포트(3,7)의 연통을 단속하도록 형성되는 밸브 스풀(9)은 제1,2,3,4랜드(11,13,15,17)로 구성된다. 이 제,2,3랜드(11,13,15)는 동일 크기의 유압 작용면을 갖고, 제4랜드(17)는 이들 보다 큰 유압 작용면을 가진다. 그리고 제4랜드(17)의 일측에는 탄성부재(19)가 제공된다.The valve spool 9 formed to interrupt the communication between the first and second ports 3 and 5 or the first and third ports 3 and 7 includes first, second, third and fourth lands 11, 13 and 15. , 17). The second and third lands 11, 13, and 15 have hydraulically acting surfaces of the same size, and the fourth land 17 has larger hydraulic acting surfaces. And one side of the fourth land 17 is provided with an elastic member 19.
이러한 밸브 스풀(9)을 지지하는 탄성부재(19)에 저항하여 밸브 스풀(19)을 제어하도록 트랜스밋션 제어유닛(TCU)에 의하여 제어된 제어압이 공급되어 밸브 스풀(9)의 제4랜드(17) 일측에 작용하도록 제4포트(21)가 구비된다.The fourth land of the valve spool 9 is supplied with a control pressure controlled by the transmission control unit TCU to resist the elastic member 19 supporting the valve spool 9 to control the valve spool 19. (17) The fourth port 21 is provided to act on one side.
상기 탄성부재(19)와 제4포트(21)로 공급되는 제어압에 의하여 밸브 스풀(9)이 제어되어 제1,2포트(3,5), 제1,3포트(3,7)가 각각 연통 또는 제1포트(3)가 차단되어 이동될 때, 이를 감지하여 트랜스밋션 제어유닛(TCU)에 그 신호를 인가시켜 제4포트(21)로 공급되는 유압을 재제어할 수 있게 하는 감지수단인 제1,2,3센서(23,25,27)가 구비된다.The valve spool 9 is controlled by the control pressure supplied to the elastic member 19 and the fourth port 21 so that the first and second ports 3 and 5 and the first and third ports 3 and 7 are provided. When the communication or the first port (3) is blocked and moved, respectively, the sensing and sensing to apply the signal to the transmission control unit (TCU) to re-control the hydraulic pressure supplied to the fourth port (21) First, second and third sensors 23, 25 and 27 are provided.
이들 제1,2,3센서(23,25,27)는 제1,2포트(3,5) 및 제1,3포트(3,7)의 연통을 단속하는 제1,2랜드(11,13)에 의하여 온,오프되도록 설치된다.These first, second and third sensors 23, 25 and 27 are connected to the first and second ports 3 and 5 and the first and second ports 3 and 7, respectively. 13) to be installed on, off.
즉, 제1센서(23)는 제1,2랜드(11,13)가 제1포트(3)를 차단할 때에만 제1랜드(11)에 의하여 온되도록 배치되고, 제2센서(25)는 제1,2랜드(11,13)가 제1,3포트(3,7)를 연통시킬 때에만 제2랜드(13)에 의하여 온되도록 배치되며, 제3센서(27)는 제1랜드(11)가 제1,2포트(3,5)를 연통시킬 때에만 제2랜드(13)에 의하여 온되도록 배치된다.That is, the first sensor 23 is arranged to be turned on by the first land 11 only when the first and second lands 11 and 13 block the first port 3, and the second sensor 25 is The first and second lands 11 and 13 are arranged to be turned on by the second land 13 only when the first and third ports 3 and 7 communicate with each other, and the third sensor 27 is connected to the first land ( It is arranged to be turned on by the second land 13 only when 11) communicates the first and second ports 3 and 5.
상술한 바와 같이 구성되는 유압 회로용 시프트 밸브를 구비한 차량을 주행시키면, 주행중 제1,2,3센서(23,25,27)는 밸브 스풀(9)의 이동에 따라 각각 온,오프 신호를 트랜스밋션 제어유닛(TCU)에 인가시킨다.When the vehicle is provided with the shift valve for the hydraulic circuit configured as described above, the first, second, and third sensors 23, 25, and 27 drive the on and off signals according to the movement of the valve spool 9 while driving. To the transmission control unit (TCU).
트랜스밋션 제어유닛(TCU)이 약한 제어압을 제4포트(21)에 작용시키면, 이 제어압과 탄성부재(19)의 상호 작용에 의하여 밸브스풀(9)은 도 1의 상태로 제어되어 제1,2랜드(11,13)에 의하여 제1포트(3)를 차단시킨다.When the transmission control unit TCU applies a weak control pressure to the fourth port 21, the valve spool 9 is controlled in the state of FIG. 1 by the interaction of the control pressure with the elastic member 19. The first and second ports 3 are blocked by the first and second lands 11 and 13.
이 때 제1센서(23)는 제1랜드(11)에 의하여 온되어 그 신호를 트랜스밋션 제어유닛(TCU)에 인가시키므로 트랜스밋션 제어유닛(TCU)은 이 상태가 유지되도록 제4포트(21)로 공급되는 제어압을 정밀하게 제어한다. 그러나 이 때 제1센서(23)가 온으로 제어되지 않으면 온으로 될 때까지 제4포트(21)로 공급되는 제어압을 제어한다.At this time, since the first sensor 23 is turned on by the first land 11 and applies the signal to the transmission control unit TCU, the transmission control unit TCU maintains this state. Precisely control the control pressure However, at this time, if the first sensor 23 is not controlled to be on, the control pressure supplied to the fourth port 21 is controlled until it is turned on.
상기 상태에서 주행 조건이 변화되어 트랜스밋션 제어유닛(TCU)이 중간 제어압을 제4포트(21)에 작용시키면, 이 제어압과 탄성부재(19)의 상호 작용에 의하여 밸브스풀(9)은 도 2의 상태로 제어되어 제1,2랜드(11,13)에 의하여 제1,3포트(3,7)를 연통시킨다.When the driving condition is changed in the above state and the transmission control unit TCU applies the intermediate control pressure to the fourth port 21, the valve spool 9 is closed by the interaction between the control pressure and the elastic member 19. It is controlled to the state of FIG.
이 때 제2센서(25)는 제2랜드(13)에 의하여 온되어 그 신호를 트랜스밋션 제어유닛(TCU)에 인가시키므로 트랜스밋션 제어유닛(TCU)은 이 상태가 유지되도록 제4포트(21)로 공급되는 제어압을 정밀하게 제어한다. 그러나 이 때 제2센서(25)가 온으로 제어되지 않으면 온으로 될 때까지 제4포트(21)로 공급되는 제어압을 제어한다.At this time, the second sensor 25 is turned on by the second land 13 to apply the signal to the transmission control unit TCU, so that the transmission control unit TCU maintains this state. Precisely control the control pressure However, if the second sensor 25 is not controlled to be on at this time, the control pressure supplied to the fourth port 21 is controlled until the second sensor 25 is turned on.
한편, 상기한 상태들에서 주행 조건이 변화되어 트랜스밋션 제어유닛(TCU)이 강한 제어압을 제4포트(21)에 작용시키면, 이 제어압과 탄성부재(19)의 상호 작용에 의하여 밸브스풀(9)은 도 3의 상태로 제어되어 제1랜드(11)에 의하여 제1,2포트(3,5)를 연통시킨다.On the other hand, if the driving condition is changed in the above state and the transmission control unit (TCU) applies a strong control pressure to the fourth port 21, the valve spool by the interaction of the control pressure and the elastic member 19 9 is controlled in the state of FIG. 3 to communicate the first and second ports 3 and 5 by the first land 11.
이 때 제3센서(27)는 제2랜드(13)에 의하여 온되어 그 신호를 트랜스밋션 제어유닛(TCU)에 인가시키므로 트랜스밋션 제어유닛(TCU)은 이 상태가 유지되도록 제4포트(21)로 공급되는 제어압을 정밀하게 제어한다. 그러나 이 때 제3센서(27)가 온으로 제어되지 않으면 온으로 될 때까지 제4포트(21)로 공급되는 제어압을 제어한다.At this time, since the third sensor 27 is turned on by the second land 13 to apply the signal to the transmission control unit TCU, the transmission control unit TCU maintains the fourth port 21 so that this state is maintained. Precisely control the control pressure However, if the third sensor 27 is not controlled to be on at this time, the control pressure supplied to the fourth port 21 is controlled until the third sensor 27 is turned on.
상술한 바와 같이 본 고안에 따른 유압 회로용 시프트 밸브는 감지수단의 감지신호로부터 밸브 스풀의 제어 스트로크를 판단하여 제2,3포트로 공급되는 유압을 검증하므로 제4포트의 제어압을 재제어하여 제2,3포트로 공급되는 유압을 정밀하게 제어하므로 유압 페일이나, 주행중 변속 쇽크를 저감시킬 수 있다.As described above, the shift valve for the hydraulic circuit according to the present invention verifies the control stroke of the valve spool from the detection signal of the sensing means to verify the hydraulic pressure supplied to the second and third ports, thereby re-controlling the control pressure of the fourth port. By precisely controlling the hydraulic pressure supplied to the second and third ports, it is possible to reduce the hydraulic fail or the shifting shank while driving.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019970044400U KR200216716Y1 (en) | 1997-12-31 | 1997-12-31 | Shift valve for hydraulic circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019970044400U KR200216716Y1 (en) | 1997-12-31 | 1997-12-31 | Shift valve for hydraulic circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990031655U KR19990031655U (en) | 1999-07-26 |
KR200216716Y1 true KR200216716Y1 (en) | 2001-06-01 |
Family
ID=53897112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019970044400U KR200216716Y1 (en) | 1997-12-31 | 1997-12-31 | Shift valve for hydraulic circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR200216716Y1 (en) |
-
1997
- 1997-12-31 KR KR2019970044400U patent/KR200216716Y1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR19990031655U (en) | 1999-07-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2339249A (en) | Hydraulic system with a single pressure transducer monitoring recharging and operating pressure | |
EP1235005B1 (en) | Self-diagnosing pressure regulator apparatus | |
CA1128778A (en) | Hydraulic control for a transmission | |
JP2005069481A (en) | Electric fluid-pressure servo valve and its manufacturing method | |
NZ200515A (en) | Hydraulic control system with pilot controlled meter-in valve | |
KR950011265B1 (en) | Speed changing device | |
US4640095A (en) | Digital electro-hydraulic valve arrangement | |
US5484352A (en) | Switch for detecting operation of control valve spool | |
KR200216716Y1 (en) | Shift valve for hydraulic circuit | |
US5709140A (en) | Hydraulic control device for automatic transmission | |
US7364525B2 (en) | Hydraulic control apparatus of automatic transmission | |
JP2667880B2 (en) | Hydraulic control system | |
KR100488707B1 (en) | Apparatus for controlling line pressure for hydraulic control system in an automatic transmission | |
KR100288221B1 (en) | Manual valve of hydraulic control system for automatic transmission | |
KR19990072039A (en) | Electro-hydraulic controller for automatic transmission | |
KR19990016965U (en) | Shift control valve for automatic transmission valve body | |
KR980003097A (en) | Incorrect operation prevention system of vehicle automatic transmission | |
KR100288225B1 (en) | Manual valve of hydraulic control system for automatic transmission | |
KR970020603A (en) | Manual Valve for Automotive Transmission Hydraulic Control System | |
KR100216057B1 (en) | Hydraulic control method | |
KR19980041903U (en) | Pressure control valve for hydraulic control | |
KR100290401B1 (en) | Flow regulating valve of hydraulic circuit for automatic transmission | |
KR100256761B1 (en) | Control valve & method for hydraulic control system | |
KR100298775B1 (en) | Hydraulic control system for automatic transmission | |
KR100279424B1 (en) | Shift control solenoid valve malfunction prevention device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
REGI | Registration of establishment | ||
FPAY | Annual fee payment |
Payment date: 20061229 Year of fee payment: 7 |
|
LAPS | Lapse due to unpaid annual fee |