KR950017394A - Hydraulic control device of 4-speed automatic transmission - Google Patents

Hydraulic control device of 4-speed automatic transmission Download PDF

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Publication number
KR950017394A
KR950017394A KR1019930032037A KR930032037A KR950017394A KR 950017394 A KR950017394 A KR 950017394A KR 1019930032037 A KR1019930032037 A KR 1019930032037A KR 930032037 A KR930032037 A KR 930032037A KR 950017394 A KR950017394 A KR 950017394A
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KR
South Korea
Prior art keywords
valve
speed
port
shift
automatic transmission
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KR1019930032037A
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Korean (ko)
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KR0179052B1 (en
Inventor
장재덕
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전성원
현대자동차 주식회사
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Publication of KR950017394A publication Critical patent/KR950017394A/en
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Publication of KR0179052B1 publication Critical patent/KR0179052B1/en

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    • 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
    • F16H61/0204—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0206—Layout of electro-hydraulic control circuits, e.g. arrangement of valves
    • 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
    • F16H61/0204—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0206—Layout of electro-hydraulic control circuits, e.g. arrangement of valves
    • F16H2061/0209—Layout of electro-hydraulic control circuits, e.g. arrangement of valves with independent solenoid valves modulating the pressure individually for each clutch or brake
    • 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
    • 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
    • F16H2061/0255—Solenoid valve using PWM or duty-cycle control
    • 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
    • F16H2061/026—On-off solenoid valve
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0043—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising four forward speeds
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2053—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with nine engaging means

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

Abstract

본 발명은 구조가 간단하고 변속응답성이 뛰어난 4속 자동변속기의 유압제어장치를 제공하는데 목적이 있다. 본 발명의 유아제어장치는, 복수개의 마찰요소를 선택적으로 계합 및 해방시켜서 4속의 전진기어비와 1속의 후진기어비를 달성하기 위한 것으로서, 소정 압력의 구동유체를 생성하기 위한 펌프와, 이 펄프로부터의 구동유체를 전진라인 및 후진라인으로 분배하도록 수동으로 조작되는 매뉴얼밸브와, 상기 전진라인을 통해 공급된 구동유체를 상기 마찰용소중 적어도 하나에 공급하여 상기 4속의 전진기어비중 하나를 달성하는 제1내지 제3의 시프트밸브와, 사이 제1내지 제3의 시프트밸브에 각각 대응하도록 설치되어 차속 및 드로틀 개도에 따라 각 시프트밸브의 작동을 제어하기 위한 제1내지 제3의 솔레노이드 밸브와, 상기 제1내지 제3의 시프트밸브에 의해 위치제어되어 구동유체의 흐름경로를 절환하는 2속 내지 4속 밸브로 구성된다.An object of the present invention is to provide a hydraulic control apparatus of a four-speed automatic transmission having a simple structure and excellent shift response. An infant control device of the present invention is to achieve a four-speed forward gear ratio and a first-speed reverse gear ratio by selectively engaging and releasing a plurality of friction elements, the pump for generating a driving fluid of a predetermined pressure, and from the pulp A manual valve operated manually to distribute the driving fluid to the forward and backward lines, and a first fluid for supplying the driving fluid supplied through the forward line to at least one of the friction elements to achieve one of the four forward gear ratios. First to third solenoid valves installed so as to correspond to the third to third shift valves and the first to third shift valves, respectively, for controlling the operation of each shift valve according to the vehicle speed and the throttle opening degree; It is composed of two-speed to four-speed valves which are controlled by the first to third shift valves to switch the flow path of the driving fluid.

Description

4속 자동변속기의 유압제어장치Hydraulic control device of 4-speed automatic transmission

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 유압제어장치가 적용되는 종래 파워트레인의 일예를 도시하는 개략도이다,1 is a schematic diagram showing an example of a conventional power train to which the hydraulic control apparatus of the present invention is applied.

제2도는 각 변속레인지에 있어서 제1도의 파워트레인을 구성하는 마찰요소의 계합 및 해방상태를 나타내는 도면이다FIG. 2 is a view showing engagement and release states of friction elements constituting the power train of FIG. 1 in each shift range. FIG.

제3도는 본 발명에 따른 유압제어장치의 유압회로도로서, 매뉴얼 밸브가 주차 위치(P)에 있는 것을 나타내는 도면이다,3 is a hydraulic circuit diagram of the hydraulic control apparatus according to the present invention, in which the manual valve is in the parking position P. FIG.

제4도는 제3도에 이점쇄선으로 도시한 유압제어장치의 상측변속제어부(P1)를 나타내는 확대도이다.FIG. 4 is an enlarged view showing the upshift control unit P1 of the hydraulic control device shown in FIG. 3 by the dashed-dotted line.

Claims (17)

토오크컨버터와, 4속의 전진기어비와 적어도 1속의 후진기어비를 달성할 수 있도록 상기 토오크컨버터에 작동적으로 연결된 기어트레인과, 유압에 의해 작동되어 상기 기어트레인을 통한 동력의 전달경로를 변경하는 복수개의 마찰요소와, 상기 마찰요소를 선택적으로 계합시키거나 해방시켜서 상기 기어비중 어느 하나를 달성하기 위한 유압제어장치로 이루어진 차량용 자동변속기에 있어서: 상기 유압제어장치가, 소정압력의 구동유체를 생성하기 위한 오일펌프와; 상기 펌프로 부터의 구동유체를 전진라인 및 후진라인으로 분배하도록 수동으로 조작되는 매뉴얼밸브와; 상기 전진라인을 통해 공급된 구동유체의 압력을 조절하여 상기 마찰용소중 적어도 하나에 공급함으로써 상기 4속의 전진기어비 중 어느 하나를 달성하기 위한 것으로, 밸브하우징과, 구동유체의 흐름을 차단하는 제1의 위치와 구동유체의 흐름을 허용하는 제2의 위치 사이에서 운동할 수 있도록 상기 하우징내에 서로 일정한 간격을 두고 조립되는 제1 및 제2의 밸브스풀과, 상기 밸브스풀을 상기 제1의 위치 및 제2의 위치중 어느 하나로 바이어스하는 제1 및 제2의 스프링을 각각 구비하고 있는 제1내지 제3의 시프트밸브와; 상기 제1내지 제3의 시프트밸브에 각각 대응하도록 설치되어 차속 및 드로틀 개도에 따라 각 시프트 밸브의 작동을 제어하기 위한 제1내지 제3의 솔레노이드밸브와; 상기 제1의 시프트밸브 및 상기 전진라인과 연통하고 있으며, 구동유체의 흐름을 차단하는 제1의 위치와 상기 제1의 시프트 밸브로부터 그에 대응하는 마찰요소로의 구동유체의 흐름을 허용하여 제2속의 전진기어비를 달성하는 제2의 위치와의 사이에서 작동할 수 있도록 구성된 2속 밸브와; 상기 제2의 시프트밸브 및 상기 2속 밸브와 연통하고 있으며, 구동유체의 흐름을 차단하는 제1의 위치와 상기 제2의 시프트 밸브로부터 그에 대응하는 마찰요소로의 구동유체의 흐름을 허용하여 제3속의 전진기어비를 달성하는 제2의 위치와의 사이에서 작동할 수 있도록 구성된 3속 밸브와; 상기 제3의 시프트밸브, 상기 3속 밸브 및 상기 매뉴얼밸브와 연통하고 있으며, 상기 3속 밸브 및 상기 매뉴얼밸브로 부터의 구동유체를 통과시키는 제1의 위치와 상기 제3의 시프트밸브로부터의 제4속의 전진기어비를 달성하는 제2의 위치와의 사이에서 작동할 수 있도록 구성된 4속 밸브를 포함하는 것을 특징으로 하는 자동변속기.A torque converter, a gear train operatively connected to the torque converter to achieve a forward gear ratio of 4 speeds and a reverse gear ratio of at least 1 speed, and a plurality of gears operated by hydraulic pressure to change a transmission path of power through the gear train. A vehicle automatic transmission comprising a friction element and a hydraulic control device for selectively engaging or releasing the friction element to achieve any of the gear ratios, wherein the hydraulic control device is adapted to generate a driving fluid of a predetermined pressure. An oil pump; A manual valve manually operated to distribute the driving fluid from the pump to the forward line and the reverse line; By adjusting the pressure of the drive fluid supplied through the forward line to supply to at least one of the friction element to achieve any one of the four speed forward gear ratio, the first to block the flow of the valve housing, the drive fluid First and second valve spools which are assembled at regular intervals in the housing so as to be able to move between the position of the and the second position allowing the flow of the driving fluid; First to third shift valves each having a first and a second spring biased to any one of the second positions; First to third solenoid valves installed so as to correspond to the first to third shift valves, respectively, for controlling the operation of each shift valve according to the vehicle speed and the throttle opening degree; A second position in communication with the first shift valve and the forward line, the second position allowing the flow of the drive fluid from the first shift valve to the friction element corresponding thereto to block the flow of the drive fluid; A second speed valve configured to operate between a second position that achieves a forward gear ratio of the speed; The first position in communication with the second shift valve and the second speed valve, permitting flow of the drive fluid from the second shift valve and the friction element corresponding thereto to block the flow of the drive fluid; A third speed valve configured to operate between a second position that achieves a third speed forward gear ratio; A first position in communication with the third shift valve, the third speed valve, and the manual valve, the first position passing the driving fluid from the third speed valve and the manual valve, and a third position from the third shift valve; And a four speed valve configured to operate between the second position and the fourth speed forward gear ratio. 제1항에 있어서, 상기 각 시프트밸브의 제1의 스프링은 상기 제2의 스프링에 비해서 더 작은 탄성계수를 갖는 것을 특징으로 하는 자동변속기.The automatic transmission of claim 1, wherein the first spring of each shift valve has a smaller modulus of elasticity than the second spring. 제2항에 있어서, 상기 각 시프트밸브의 하우징은, 보어와, 구동유체를 상기 보어내로 도입하기 위한 유입포트와, 이 유입포트에 선택적으로 연통하는 배출포트와, 상기 보어내로 저압유체를 도입하여 상기 제1 및 제2의 밸브스풀을 스프링의 탄력에 대항하여 제2의 위치로 이동시키기 위한 제어포트를 구비하고 있는 것을 특징으로 하는 자동변속기.The housing of each of the shift valves includes: a bore, an inlet port for introducing a driving fluid into the bore, a discharge port selectively communicating with the inlet port, and a low pressure fluid introduced into the bore; And a control port for moving said first and second valve spools to a second position against spring elasticity. 제3항에 있어서, 상기 제1의 밸브스풀은, 상기 유입포트를 선택적으로 개폐하기 위한 제1의 랜드와, 이 제1의 랜드로부터 소정의 간격을 두고 축방향으로 이격되어 있는 제2의 랜드로 이루어진 것을 특징으로 하는 자동변속기.The said 1st valve spool is a 1st land for selectively opening / closing the said inflow port, and a 2nd land spaced apart from this 1st land in the axial direction at predetermined intervals. Automatic transmission, characterized in that consisting of. 제1항에 있어서, 상기 솔레노이드밸브는 상기 폐쇄형 솔레노이드밸브인 것을 특징으로 하는 자동변속기.The automatic transmission of claim 1, wherein the solenoid valve is the closed solenoid valve. 제3항에 있어서, 상기 2속 밸브, 3속 밸브 및 4속 밸브의 각각은 하우징과, 제1 및 제2의 위치 사이에서 운동할 수 있도록 상기 하우징내에 미끄럼 운동가능하게 조립되는 밸브스풀과, 이 밸브스풀을 상기 제1의 위치로 바이어스시키기 위한 스프링으로 이루어진 것을 특징으로 하는 자동변속기.4. The valve of claim 3, wherein each of the second speed valve, the third speed valve and the fourth speed valve comprises: a valve spool slidably assembled in the housing to move between the first and second positions; And a spring for biasing said valve spool to said first position. 제6항에 있어서, 상기 2속 밸브의 하우징은, 보어와, 상기 제1의 시프트밸브의 배출포트에 연결된 제1의 유입포트와, 상기 전진라인에 연결되어 구동유체를 공급받는 제2의 유입포트와, 상기 전진라인에 연결되어 구동유체를 공급받는 제2의 유입포트와, 상기 저속라인 및 상기 3속 밸브를 경유하여 상기 매뉴얼밸브로부터 구동유체를 공급받는 제3의 유입포트와, 상기 제1의 유입포트와 선택적으로 연통하는 제1의 배출포트와, 상기 제2의 유입포트와 선택적으로 연통하고 상기 제2의 시프트밸브 및 상기 3속 밸브에 이어진 제2의 배출포트와, 상기 제3의 유입포트와 선택적으로 연통하는 제3의 배출포트와, 상기 제3의 배출포트와 상기 제3의 유입포트와 연통하고 있지 않을 때 상기 제3의 유입포트와 연통하도록 된 제4의 유입포트로 이루어진 것을 특징으로 하는 자동변속기.The housing of the second speed valve according to claim 6, wherein the housing of the second speed valve includes a bore, a first inflow port connected to the discharge port of the first shift valve, and a second inflow connected to the forward line to receive a driving fluid. A port, a second inflow port connected to the forward line to receive driving fluid, a third inflow port to receive driving fluid from the manual valve via the low speed line and the third speed valve, and the third inflow port; A first discharge port selectively communicating with the first inlet port, a second discharge port selectively communicating with the second inlet port and connected to the second shift valve and the third speed valve, and the third A third discharge port selectively communicating with an inflow port of the fourth inlet port and a fourth inlet port configured to communicate with the third inlet port when the third outlet port is not in communication with the third inlet port; Characterized by Automatic transmission. 제7항에 있어서, 상기 2속 밸브의 밸브스풀은, 상기 제1내지 제3의 유입포트 및 상기 제1내지 제4의 유입포트와 협동하여 상기 2속 밸브를 통한 구동유체의 흐름을 제어할 수 있도록 상기 밸브스풀의 길이를 따라 소정의 간격으로 배열된 제1내지 제5의 랜드를 갖는 것을 특징으로 하는 자동변속기.8. The valve of claim 7, wherein the valve spool of the second speed valve cooperates with the first to third inlet ports and the first to fourth inlet ports to control the flow of the driving fluid through the second speed valve. And first to fifth lands arranged at predetermined intervals along the length of the valve spool. 제6항에 있어서, 상기 3속 밸브의 하우징은, 보어와, 상기 제2의 시프트밸브의 배출포트에 연결된 제1의 유입포트와, 상기 2속 밸브의 제2의 배출포트에 연결된 제2의 유입포트와, 상기 매뉴얼밸브로 부터의 구동유체를 상기 저속라인을 통해서 공급받는 제3의 유입포트와, 상기 제1의 유입포트와 선택적으로 연통하는 제1의 배출포트와, 상기 제2의 유입포트와 선택적으로 연통하고 상기 제3의 시프트밸브및 상기 제 4속 밸브에 이어진 제2의 배출포트와, 상기 제3의 유입포트와 선택적으로 연통하고 상기 2속밸브의 제3의 유입 포트에 이어진 제3의 배출포트로 이루어진 것을 특징으로 하는 자동변속기.The housing of the third speed valve according to claim 6, wherein the housing of the third speed valve includes a bore, a first inlet port connected to a discharge port of the second shift valve, and a second discharge port connected to a second discharge port of the second speed valve. An inlet port, a third inlet port for receiving a drive fluid from the manual valve through the low speed line, a first outlet port for selectively communicating with the first inlet port, and the second inlet port A second discharge port selectively communicating with a port and connected to the third shift valve and the fourth speed valve, and selectively communicating with a third inlet port and connected to a third inlet port of the second speed valve An automatic transmission comprising a third discharge port. 제9항에 있어서, 상기 3속 밸브의 밸브스풀은 상기 제1내지 제3의 유입포트와 협동하여 상기 3속밸브를 통한 구동유체의 흐름을 제어할 수 있도록 상기 밸브스풀의 길이를 따라 소정의 간격으로 배열된 제1내지 제5의 랜드를 갖는 것을 특징으로 하는 자동변속기.The valve spool of claim 9, wherein the valve spool of the third speed valve is predetermined along the length of the valve spool so as to cooperate with the first to third inlet ports to control the flow of the driving fluid through the third speed valve. An automatic transmission having first to fifth lands arranged at intervals. 제6항에 있어서, 상기 4속 밸브의 하우징은, 보어와, 상기 제3의 시프트밸브의 배출포트에 이어진 제1의 유입포트와, 상기 3속 밸브의 제2의 배출포트에 이어진 제2의 유입포트 및 상기 매뉴얼밸브에 이어진 제2의 유입포트와, 상기 제1의 유입포트와 선택적으로 연토하는 제1의 배출포트와, 상기 제2의 유입포트와 선택적으로 연통하는 제2의 배출포트로 이루어진 것을 특징으로 하는 자동변속기.The housing of the fourth speed valve according to claim 6, wherein the housing of the fourth speed valve includes a bore, a first inflow port connected to the discharge port of the third shift valve, and a second discharge port connected to the second discharge port of the third speed valve. A second inlet port connected to the inlet port and the manual valve, a first outlet port selectively colliding with the first inlet port, and a second outlet port selectively communicating with the second inlet port; Automatic transmission, characterized in that made. 제11항에 있어서, 상기 4속 밸브의 밸브스풀은, 상기 제1 및 제2의 유입포트와 상기 상기 제1 및 제2의 배출포트와 협동하여 상기 4속 밸브를 통한 구동유체의 흐름을 제어할 수 있도록 상기 밸브스풀의 길이를 따라 소정의 간격으로 배열된 제1내지 제3의 랜드를 갖는 것을 특징으로 하는 자동변속기.The valve spool of claim 4, wherein the valve spool of the fourth speed valve cooperates with the first and second inlet ports and the first and second discharge ports to control the flow of the driving fluid through the fourth speed valve. And a first to third lands arranged at predetermined intervals along the length of the valve spool. 제1항에 있어서, 차량의 전진주행중 상기 매뉴얼밸브를 후진위치로 조작하더라도 상기 후진기어비가 달성되지 못하도록 하는 후진방지밸브를 추가로 포함하는 것을 특징으로 하는 자동변속기.The automatic transmission of claim 1, further comprising a reverse prevention valve that prevents the reverse gear ratio from being achieved even when the manual valve is operated to the reverse position during the forward driving of the vehicle. 제13항에 있어서, 상기 후진방지밸브의 작동은 상기 제1의 솔레노이드밸브에 의해서 제어되는 것을 특징으로 하는 자동변속기.The automatic transmission of claim 13, wherein the operation of the reverse check valve is controlled by the first solenoid valve. 제1항에 있어서, 상기 펌프에서 토출된 구동유체의 압력을 저압, 중압 및 고압중 어느 하나로 가변적으로 조절하기 위한 압력조절밸브를 추가로 포함하는 것을 특징으로 하는 자동변속기.The automatic transmission of claim 1, further comprising a pressure regulating valve for variably adjusting the pressure of the driving fluid discharged from the pump to any one of low pressure, medium pressure, and high pressure. 제15항에 있어서, 상기 구동유체의 압력을 감소시켜서 자압유체를 생성하기 위한 감압밸브를 추가로 포함하는 것을 특징으로 하는 자동변속기.16. The automatic transmission of claim 15, further comprising a pressure reducing valve for reducing the pressure of the driving fluid to generate a self-pressing fluid. 제1항에 있어서, 상기 마찰요소는, 상기 유압제어장치에 의해 선택적으로 계합 및 해방되어 상기 4속의 전진기어비 및 1속의 후진기어비중 어느 하나를 달성하기 위한 오버런전진클러치, 전진클러치, 3속 클러치, 후진클러치, 오버드라이브 유닛클러치, 로우/리버스 브레이크, 2속 브레이크, 4속 밴드브레이크를 포함하는 것을 특징으로 하는 자동변속기.The overrun forward clutch, the forward clutch, and the third speed clutch of claim 1, wherein the friction element is selectively engaged and released by the hydraulic control device to achieve any one of the fourth gear ratio and the first gear ratio. Reversing clutch, overdrive unit clutch, low / reverse brake, two-speed brake, four-speed band brake, characterized in that the automatic transmission. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930032037A 1993-12-31 1993-12-31 Hydraulic control device of 4-speed automatic transmission KR0179052B1 (en)

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