KR100369173B1 - Hydraulic control system for cvt - Google Patents

Hydraulic control system for cvt Download PDF

Info

Publication number
KR100369173B1
KR100369173B1 KR10-2000-0075097A KR20000075097A KR100369173B1 KR 100369173 B1 KR100369173 B1 KR 100369173B1 KR 20000075097 A KR20000075097 A KR 20000075097A KR 100369173 B1 KR100369173 B1 KR 100369173B1
Authority
KR
South Korea
Prior art keywords
pressure
hydraulic
damper clutch
valve
control
Prior art date
Application number
KR10-2000-0075097A
Other languages
Korean (ko)
Other versions
KR20020045713A (en
Inventor
이재신
Original Assignee
현대자동차주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR10-2000-0075097A priority Critical patent/KR100369173B1/en
Publication of KR20020045713A publication Critical patent/KR20020045713A/en
Application granted granted Critical
Publication of KR100369173B1 publication Critical patent/KR100369173B1/en

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
    • F16H61/66—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 specially adapted for continuously variable gearings
    • 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
    • F16H61/0021—Generation or control of line pressure
    • F16H2061/0037—Generation or control of line pressure characterised by controlled fluid supply to lubrication circuits of the gearing
    • 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
    • F16H61/0262—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 hydraulic
    • F16H61/0276—Elements specially adapted for hydraulic control units, e.g. valves
    • F16H2061/0279—Details of hydraulic valves, e.g. lands, ports, spools or springs
    • 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
    • F16H61/66—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 specially adapted for continuously variable gearings
    • F16H2061/6604—Special control features generally applicable to continuously variable gearings
    • F16H2061/6609—Control of clutches or brakes in torque split transmissions

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

본 발명의 목적은 오일팬으로 리턴되는 유압을 사용함으로써 오일펌프에서 발생된 유압의 누유량을 최소화하여 유압의 활용도를 향상시키는 무단 변속기용 유압 제어 시스템을 제공하는 데 있다.An object of the present invention is to provide a hydraulic control system for a continuously variable transmission to minimize the leakage of the hydraulic pressure generated in the oil pump by using the hydraulic pressure returned to the oil pan to improve the utilization of the hydraulic pressure.

본 발명에 따른 무단 변속기용 유압 제어 시스템은, 오일펌프로부터 공급되는 유압을 라인압으로 제어하도록 라인압과 라인압 컨트롤 솔레노이드 밸브의 듀티 제어압이 작용하는 레귤레이터 밸브, 이 레귤레이터 밸브에서 오일팬으로 리턴되는 일부 유압을 댐퍼 클러치 제어압으로 공급하는 유압 재순환 수단, 이 유압 재순환 수단에서 공급되는 댐퍼 클러치 제어압과 오일펌프에서 공급되는 댐퍼 클러치 제어압을 경유시켜 댐퍼 클러치를 제어하는 댐퍼 클러치 컨트롤 밸브를 포함하여 구성된다.The hydraulic control system for a continuously variable transmission according to the present invention is a regulator valve in which the duty pressure of the line pressure and the line pressure control solenoid valve acts so as to control the hydraulic pressure supplied from the oil pump to the line pressure, and the regulator valve returns to the oil pan. Hydraulic recirculation means for supplying a partial hydraulic pressure to the damper clutch control pressure, and a damper clutch control valve for controlling the damper clutch via the damper clutch control pressure supplied from the hydraulic recirculation means and the damper clutch control pressure supplied from the oil pump. It is configured by.

Description

무단 변속기용 유압 제어 시스템{HYDRAULIC CONTROL SYSTEM FOR CVT}HYDRAULIC CONTROL SYSTEM FOR CVT}

본 발명은 무단 변속기용 유압 제어 시스템에 관한 것으로서, 보다 상세하게는 오일펌프에서 발생된 유압의 누유량을 최소화하여 유압의 활용도를 향상시키는 무단 변속기용 유압 제어 시스템에 관한 것이다.The present invention relates to a hydraulic control system for a continuously variable transmission, and more particularly to a hydraulic control system for a continuously variable transmission to minimize the leakage of the hydraulic pressure generated in the oil pump to improve the utilization of the hydraulic pressure.

일반적으로 벨트식 무단 변속기를 제어하는 유압 제어 시스템은 구동 풀리 및 종동 풀리의 변속비를 제어하는 변속비 제어부, 차량의 주행 방향을 제어하는 전후진 제어부, 이들 변속비 제어부 및 전후진 제어부로 공급할 라인압을 제어하는 라인압 제어부, 그리고 토크 컨버터에 내장된 댐퍼 클러치를 제어하는 댐퍼 클러치 제어부를 포함한다.In general, a hydraulic control system for controlling a belt-type continuously variable transmission includes a speed ratio control unit for controlling a transmission ratio of a driving pulley and a driven pulley, a forward and backward control unit for controlling a driving direction of a vehicle, and a line pressure to be supplied to these speed ratio control units and a forward and backward control unit. And a damper clutch controller for controlling the damper clutch incorporated in the torque converter.

도 1에 도시된 바와 같이 라인압 제어부는 오일펌프(1)에서 발생된 유압을레귤레이터 밸브(3)에서 라인압으로 제어 공급하고, 댐퍼 클러치 제어부는 오일펌프(1)에서 공급되는 일부 유압을 토크 컨버터 피이드 밸브(5)와 댐퍼 클러치 컨트롤 밸브(7)로 경유시켜 토크 컨버터(9) 내의 댐퍼 클러치(11)를 제어하도록 구성된다.As shown in FIG. 1, the line pressure control unit controls and supplies the hydraulic pressure generated from the oil pump 1 to the line pressure at the regulator valve 3, and the damper clutch control unit torques some of the hydraulic pressure supplied from the oil pump 1. It is configured to control the damper clutch 11 in the torque converter 9 via the converter feed valve 5 and the damper clutch control valve 7.

레귤레이터 밸브(3)는 라인압 관로(13)로 공급되는 라인압(a)과 토크 컨버터 피이드 밸브(5)로 공급되는 댐퍼 클러치 제어압(b) 및 라인압 컨트롤 솔레노이드 밸브(15)의 듀티 제어압(c)에 의하여 오일펌프(1)로부터 공급되는 유압을 라인압(a) 및 댐퍼 클러치 제어압(b)으로 제어 공급하고 그 외는 오일팬(17)으로 리턴(d)시킨다.The regulator valve 3 controls the duty of the line pressure a supplied to the line pressure line 13 and the damper clutch control pressure b supplied to the torque converter feed valve 5 and the line pressure control solenoid valve 15. The hydraulic pressure supplied from the oil pump 1 by the pressure c is controlled and supplied to the line pressure a and the damper clutch control pressure b, and the other is returned to the oil pan 17.

그러나 상기와 같은 무단 변속기용 유압 제어 시스템은 매뉴얼 밸브에 공급된 유압이 라인압과 댐퍼 클러치 제어압으로 공급되고 나머지 전량이 오일팬으로 리턴되기 때문에 오일펌프에서 발생된 유압의 누유량이 증대되어 유압의 활용도를 저하시키는 단점이 있다.However, in the hydraulic control system for a continuously variable transmission as described above, since the hydraulic pressure supplied to the manual valve is supplied to the line pressure and the damper clutch control pressure and all the rest is returned to the oil pan, the oil leakage from the oil pump is increased to increase the hydraulic pressure. There is a disadvantage in reducing the utilization.

따라서 본 발명은 상기와 같은 단점을 해소하기 위하여 발명된 것으로서, 본 발명의 목적은 오일팬으로 리턴되는 유압을 사용함으로써 오일펌프에서 발생된 유압의 누유량을 최소화하여 유압의 활용도를 향상시키는 무단 변속기용 유압 제어 시스템을 제공하는 데 있다.Therefore, the present invention has been invented to solve the above disadvantages, an object of the present invention is to use the hydraulic pressure returned to the oil pan to continuously improve the utilization of the hydraulic pressure by minimizing the amount of oil leakage generated in the oil pump To provide a hydraulic control system.

도 1은 종래기술에 다른 무단 변속기용 유압 제어 시스템의 부분 유압 회로도이다.1 is a partial hydraulic circuit diagram of a hydraulic control system for a continuously variable transmission according to the prior art.

도 2는 본 발명에 따른 무단 변속기용 유압 제어 시스템의 부분 유압 회로도이다.2 is a partial hydraulic circuit diagram of a hydraulic control system for a continuously variable transmission according to the present invention.

이를 실현하기 위한 본 발명에 따른 무단 변속기용 유압 제어 시스템은Hydraulic control system for a continuously variable transmission according to the present invention for realizing this

오일펌프로부터 공급되는 유압을 라인압으로 제어하도록 라인압과 라인압 컨트롤 솔레노이드 밸브의 듀티 제어압이 작용하는 레귤레이터 밸브,A regulator valve in which the duty control pressure of the line pressure and the line pressure control solenoid valve acts to control the hydraulic pressure supplied from the oil pump to the line pressure,

상기 레귤레이터 밸브에서 오일팬으로 리턴되는 일부 유압을 댐퍼 클러치 제어압으로 공급하는 유압 재순환 수단,Hydraulic recirculation means for supplying a part of the hydraulic pressure returned to the oil pan from the regulator valve to the damper clutch control pressure,

상기 유압 재순환 수단에서 공급되는 댐퍼 클러치 제어압과 오일펌프에서 공급되는 댐퍼 클러치 제어압을 경유시켜 댐퍼 클러치를 제어하는 댐퍼 클러치 컨트롤 밸브를 포함한다.And a damper clutch control valve for controlling the damper clutch via the damper clutch control pressure supplied from the hydraulic recirculating means and the damper clutch control pressure supplied from the oil pump.

이하, 본 발명의 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 2는 본 발명에 따른 무단 변속기용 유압 제어 시스템의 부분 유압 회로도로서, 레귤레이터 밸브(19), 유압 재순환 수단(21), 그리고 댐퍼 클러치 컨트롤 밸브(23)를 포함한다.2 is a partial hydraulic circuit diagram of a hydraulic control system for a continuously variable transmission according to the present invention, which includes a regulator valve 19, a hydraulic recirculation means 21, and a damper clutch control valve 23.

레귤레이터 밸브(19)는 오일펌프(25)로부터 공급되는 유압을 라인압(e)으로 제어하도록 구성된다. 즉, 레귤레이터 밸브(19)는 라인압 관로(27)로 공급되는 라인압(e)이 작용하고, 이 작용 방향에 대항하는 라인압 컨트롤 솔레노이드 밸브(29)의 듀티 제어압(f)과 탄성부재(31)의 탄성력이 작용하여 라인압 관로(27)와 리턴 관로(33)의 상호 개폐량을 제어하도록 구성된다. 또 오일펌프(25)는 엔진(미도시)의 기동과 동시에 구동되어 유압을 발생 공급한다.The regulator valve 19 is configured to control the hydraulic pressure supplied from the oil pump 25 to the line pressure e. That is, the regulator valve 19 acts as the line pressure e supplied to the line pressure line 27 and the duty control pressure f of the line pressure control solenoid valve 29 and the elastic member are opposed to the direction of action. An elastic force of (31) acts to control the amount of opening and closing of the line pressure line (27) and the return line (33). The oil pump 25 is driven at the same time as the engine (not shown) is started to generate and supply hydraulic pressure.

유압 재순환 수단(21)은 레귤레이터 밸브(19)에서 오일팬(35)으로 리턴되는 일부 유압을 댐퍼 클러치 제어압(g)으로 제어 공급하도록 구성된다. 이 유압 재순환 수단(21)은 다양하게 구성될 수 있으나 본 실시예에서는 레귤레이터 밸브(19)와 오일팬(35) 사이에 설치되는 토크 컨버터 피이드 밸브(37)로 구성되는 것을 예시한다.The hydraulic recirculation means 21 is configured to control supply the partial hydraulic pressure returned from the regulator valve 19 to the oil pan 35 to the damper clutch control pressure g. The hydraulic recirculation means 21 may be configured in various ways, but in the present embodiment, the hydraulic recirculating means 21 may be configured of a torque converter feed valve 37 installed between the regulator valve 19 and the oil pan 35.

이 토크 컨버터 피이드 밸브(37)는 탄성부재(39)에 지지된 밸브스풀(41)을 제어하는 유압이 작용하는 제1포트(43), 이 제1포트(43)에 작용하는 유압과 탄성부재(39)의 탄성력에 의하여 댐퍼 클러치 제어압(g)을 공급하고 잔량의 유압을 레귤레이터 밸브(19)에서 오일팬(35)으로 리턴시키는 제2,3포트(45,47)를 포함한다. 제1,2포트(43,45)에는 리턴 관로(33)를 통하여 레귤레이터 밸브(19)에 연결되고, 제3포트(47)는 오일팬(35)에 연결된다. 또한 토크 컨버터 피이드 밸브(37)로부터 공급되는 댐퍼 클러치 제어압(g)은 유압 회로의 다른 부분에도 사용될 수 있다.The torque converter feed valve 37 has a first port 43 in which oil pressure acts to control the valve spool 41 supported by the elastic member 39, and hydraulic and elastic members acting on the first port 43. And second and third ports 45 and 47 for supplying the damper clutch control pressure g by the elastic force of 39 and returning the remaining amount of hydraulic pressure from the regulator valve 19 to the oil pan 35. The first and second ports 43 and 45 are connected to the regulator valve 19 through the return line 33, and the third port 47 is connected to the oil pan 35. The damper clutch control pressure g supplied from the torque converter feed valve 37 can also be used for other parts of the hydraulic circuit.

한편, 댐퍼 클러치 컨트롤 밸브(23)는 유압 재순환 수단(21)의 토크 컨버터 피이드 밸브(37)와 오일펌프(25)에서 공급되는 댐퍼 클러치 제어압(g)을 경유시켜 토크 컨버터(49)에 내장된 댐퍼 클러치(51)를 제어하도록 구성된다. 즉, 댐퍼 클러치 컨트롤 밸브(23)는 댐퍼 클러치 컨트롤 솔레노이드 밸브(53)의 듀티 제어압에 의하여 제어되도록 구성된다.On the other hand, the damper clutch control valve 23 is built in the torque converter 49 via the torque converter feed valve 37 of the hydraulic recirculation means 21 and the damper clutch control pressure g supplied from the oil pump 25. Configured to control the damper clutch 51. In other words, the damper clutch control valve 23 is configured to be controlled by the duty control pressure of the damper clutch control solenoid valve 53.

상술한 바와 같이 구성된 무단 변속기용 유압 제어 시스템이 구비된 차량의 엔진을 기동시키면, 오일펌프(25)가 구동되어 라인압 관로(27)로 유압이 공급된다.When the engine of the vehicle provided with the hydraulic control system for the continuously variable transmission configured as described above is started, the oil pump 25 is driven to supply the hydraulic pressure to the line pressure line 27.

이 라인압 관로(27)로 공급되는 유압은 매뉴얼 밸브(19)의 일측에 작용하고 이의 대항측에 제공된 탄성부재(31)의 탄성력과 라인압 컨트롤 솔레노이드 밸브(29)의 듀티 제어압(f)의 상호 작용에 의하여 라인압(e)으로 제어된다.The hydraulic pressure supplied to the line pressure line 27 acts on one side of the manual valve 19 and the elastic force of the elastic member 31 provided on the opposite side thereof and the duty control pressure f of the line pressure control solenoid valve 29. Is controlled by the line pressure e.

이 과정에서 리턴 관로(33)로 일부 유압이 리턴된다. 이렇게 리턴되는 유압은 토크 컨버터 피이드 밸브(37)의 제1포트(43)로 공급되어 탄성부재(39)에 지지된 밸브스풀(41)을 제어하여 제2,3포트(45,47)의 개폐량을 제어한다. 따라서 리턴 관로(33)로 리턴되는 유압을 댐퍼 클러치 제어압(g)으로 제어하여 댐퍼 클러치 컨트롤 밸브(23)로 공급한다.In this process, some hydraulic pressure is returned to the return pipe 33. The hydraulic pressure thus returned is supplied to the first port 43 of the torque converter feed valve 37 to control the valve spool 41 supported by the elastic member 39 to open and close the second and third ports 45 and 47. Control the amount. Therefore, the hydraulic pressure returned to the return pipe 33 is controlled by the damper clutch control pressure g and is supplied to the damper clutch control valve 23.

이렇게 제어된 댐퍼 클러치 제어압(g)은 오일펌프(25)에서 직접 댐퍼 클러치 컨트롤 밸브(23)로 공급되는 댐퍼 클러치 제어압(g)과 동일한 압력으로 제어됨이 바람직하다.The damper clutch control pressure g thus controlled is preferably controlled at the same pressure as the damper clutch control pressure g supplied from the oil pump 25 directly to the damper clutch control valve 23.

상술한 바와 같이 본 발명에 따른 무단 변속기용 유압 제어 시스템은 유압 재순환 수단을 구비하므로 레귤레이터 밸브에서 오일팬으로 리턴되는 일부 유압을 댐퍼 클러치 제어압으로 공급할 수 있다.As described above, the hydraulic control system for a continuously variable transmission according to the present invention includes hydraulic recirculation means, so that some hydraulic pressure returned from the regulator valve to the oil pan can be supplied to the damper clutch control pressure.

따라서 본 발명의 무단 변속기용 유압 제어 시스템은 오일펌프에서 발생된 유압의 누유량을 최소화하여 유압의 활용도를 향상시킬 수 있다.Therefore, the hydraulic control system for a continuously variable transmission of the present invention can improve the utilization of the hydraulic pressure by minimizing the leakage of the hydraulic pressure generated in the oil pump.

Claims (3)

오일펌프로부터 공급되는 유압을 라인압으로 제어하도록 라인압과 라인압 컨트롤 솔레노이드 밸브의 듀티 제어압이 작용하는 레귤레이터 밸브,A regulator valve in which the duty control pressure of the line pressure and the line pressure control solenoid valve acts to control the hydraulic pressure supplied from the oil pump to the line pressure, 상기 레귤레이터 밸브에서 오일팬으로 리턴되는 일부 유압을 댐퍼 클러치 제어압으로 공급하는 유압 재순환 수단,Hydraulic recirculation means for supplying a part of the hydraulic pressure returned to the oil pan from the regulator valve to the damper clutch control pressure, 상기 유압 재순환 수단에서 공급되는 댐퍼 클러치 제어압과 오일펌프에서 공급되는 댐퍼 클러치 제어압을 경유시켜 댐퍼 클러치를 제어하는 댐퍼 클러치 컨트롤 밸브를 포함하는 무단 변속기용 유압 제어 시스템.And a damper clutch control valve for controlling the damper clutch via the damper clutch control pressure supplied from the hydraulic recirculating means and the damper clutch control pressure supplied from the oil pump. 청구항 1에 있어서,The method according to claim 1, 상기 유압 재순환 수단은 상기 레귤레이터 밸브와 오일팬 사이에 설치되는 토크 컨버터 피이드 밸브로 구성됨을 특징으로 하는 무단 변속기용 유압 제어 시스템.The hydraulic recirculation means is a hydraulic control system for a continuously variable transmission, characterized in that consisting of a torque converter feed valve installed between the regulator valve and the oil pan. 청구항 2에 있어서,The method according to claim 2, 상기 토크 컨버터 피이드 밸브는 상기 레귤레이터 밸브에서 오일팬으로 리턴되는 유압이 탄성부재의 탄성력에 대항하는 방향으로 밸브스풀에 작용하는 제1포트,The torque converter feed valve may include a first port in which oil pressure returned from the regulator valve to the oil pan acts on the valve spool in a direction against the elastic force of the elastic member, 상기 제1포트에 작용하는 유압과 탄성부재의 탄성력에 의하여 밸브스풀이 이동함에 따라 상기 댐퍼 클러치 제어압을 공급하고 잔량의 유압을 상기 레귤레이터 밸브에서 오일팬으로 리턴시키도록 상기 레귤레이터 밸브에 연결되는 제2포트와 오일팬에 연결되는 제3포트를 포함하는 무단 변속기용 유압 제어 시스템.A valve connected to the regulator valve to supply the damper clutch control pressure and return the remaining amount of hydraulic pressure from the regulator valve to the oil pan as the valve spool moves by the hydraulic pressure acting on the first port and the elastic force of the elastic member. Hydraulic control system for continuously variable transmission comprising two ports and a third port connected to the oil pan.
KR10-2000-0075097A 2000-12-11 2000-12-11 Hydraulic control system for cvt KR100369173B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR10-2000-0075097A KR100369173B1 (en) 2000-12-11 2000-12-11 Hydraulic control system for cvt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-2000-0075097A KR100369173B1 (en) 2000-12-11 2000-12-11 Hydraulic control system for cvt

Publications (2)

Publication Number Publication Date
KR20020045713A KR20020045713A (en) 2002-06-20
KR100369173B1 true KR100369173B1 (en) 2003-01-24

Family

ID=27680828

Family Applications (1)

Application Number Title Priority Date Filing Date
KR10-2000-0075097A KR100369173B1 (en) 2000-12-11 2000-12-11 Hydraulic control system for cvt

Country Status (1)

Country Link
KR (1) KR100369173B1 (en)

Also Published As

Publication number Publication date
KR20020045713A (en) 2002-06-20

Similar Documents

Publication Publication Date Title
KR100409410B1 (en) Hydraulic control system for a continuously variable ransmission
KR101566729B1 (en) Oil pressure supply system of automatic transmission
KR100376713B1 (en) Line pressure control system for at
US6364802B1 (en) Hydraulic control system for a continuously variable transmission
JP4691339B2 (en) Belt lubrication and cooling control device for continuously variable transmission
KR100369173B1 (en) Hydraulic control system for cvt
EP2191173B1 (en) Control system for a continuously variable transmission
JP4857275B2 (en) Continuously variable transmission with control device
KR100369190B1 (en) Shift ratio control system for cvt
JP4125575B2 (en) Control device for belt type continuously variable transmission
KR100285489B1 (en) Device for controlling line pressure of automatic transmission
KR19990039769A (en) Hydraulic Control System of Automatic Transmission
KR100551277B1 (en) Hydraulic damper clutch control device of automatic transmission
KR100309152B1 (en) Hydraulic control system for automatic transmission
KR100196793B1 (en) Line pressure compensation method of clutch working of hydraulic control system
KR101134300B1 (en) Hydraulic control system of continuously variable transmission for vehicle
JP4016866B2 (en) Hydraulic control device for transmission
KR100298773B1 (en) Hydraulic control system of automatic transmission
KR100506365B1 (en) hydraulic control system of continuously variable transmission
JPH11182662A (en) Hydraulic control device of belt type continuously variable transmission
KR950013786A (en) Automotive automatic shift system
KR200282005Y1 (en) Line pressure control system for automatic transmission
KR100305827B1 (en) Hydraulic control system for continuously variable transmission
KR100394679B1 (en) Hydraulic control system of continuously variable transmission for vehicle
KR19980044124U (en) Line pressure control device for automatic transmission

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130102

Year of fee payment: 11

FPAY Annual fee payment

Payment date: 20131218

Year of fee payment: 12

LAPS Lapse due to unpaid annual fee