KR940000770A - 작업차의 주행변속구조 - Google Patents

작업차의 주행변속구조 Download PDF

Info

Publication number
KR940000770A
KR940000770A KR1019930010603A KR930010603A KR940000770A KR 940000770 A KR940000770 A KR 940000770A KR 1019930010603 A KR1019930010603 A KR 1019930010603A KR 930010603 A KR930010603 A KR 930010603A KR 940000770 A KR940000770 A KR 940000770A
Authority
KR
South Korea
Prior art keywords
clutch
pressure
hydraulic
gear transmission
response
Prior art date
Application number
KR1019930010603A
Other languages
English (en)
Other versions
KR960015252B1 (ko
Inventor
데쓰 후꾸이
다께시 우라
시게까즈 하세가와
Original Assignee
미노 시게가즈
가부시끼가이샤 구보다
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 미노 시게가즈, 가부시끼가이샤 구보다 filed Critical 미노 시게가즈
Publication of KR940000770A publication Critical patent/KR940000770A/ko
Application granted granted Critical
Publication of KR960015252B1 publication Critical patent/KR960015252B1/ko

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed 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
    • F16H61/02—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
    • F16H61/0265—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signals
    • F16H61/0272—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signals characterised by initiating reverse gearshift
    • 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
    • F16H61/04—Smoothing ratio shift
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/306—Pressure sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/42—Clutches or brakes
    • 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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/08—Range selector apparatus
    • F16H2059/088—Fast forward-reverse-sequence mode
    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H2061/2823—Controlling actuator force way characteristic, i.e. controlling force or movement depending on the actuator position, e.g. for adapting force to synchronisation and engagement of gear clutch

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Transmission Device (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Agricultural Machines (AREA)

Abstract

엔진(1)으로 부터의 출력을 변속하여 차륜에 전달하는 차량용 기어변속 장치를 위한 조작시스템은 상기 엔진(1)과 상기 기어변속장치(A)를 연결하는 동력전달 경로중에 설치되어, 전후진의 각각의 대응하는 2개의 유압클러치(5,6)와 그들을 선택적으로 조작하는 전후진 전환밸브(32)를 가진 제1클러지기구;상기 기어변속장치(A)와 차륜을 연결하는 동력전달 경로중에 설치되어 동력의 전달/차단을 급속히 행할 수 있는 급속적동 클러치(19)와 그것을 조작하는 클러치조작밸브(28)를 가진 제2클러치기구;상기 기어변속 장치를 변속조작하는 액튜에이터(T1,T2);또한 상기 전후진 전환밸브(32), 상기 클러치 조작밸브(26), 상기 액튜에이터(T1,T2)와 연동녀결된 제어장치(30)를 가진다. 상기 액튜에이터(T1,T2)의 변속조작의 개시에 응답하여 상기 급속작동클러치(19)는 차단됨과 동시에 상기 제1클러치기구의 전달상태의 유압클러치가 소정저압지까지 감압된다.
또, 상기 액튜에이터(T1,T2)의 변속조작의 종료에 응답하여 상기 급속작동클러치(19)가 걸어맞추어짐과 동시에 상기 제1클러치기구의 소정저압상태의 유압클러치의 유압이 점차적으로 상승된다.

Description

작업차의 주행변속구조
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 미션 케이스내의 주행 전동계의 개략도.
제 2 도는 변속조작용의 유압실린더, 급속작동클러치, 전진 및 후진유압클러치 등의 유압회로도.
제 3 도는 변속조작시에 있어서의 전진 및 후진유압클러치의 작동압과 급속작동클러치의 전동상태도.

Claims (8)

  1. 엔진(1)으로부터의 출력을 변속하여 차륜에 전달하는 차량용 기어변속장치(A)를 위한 조작시스템에 있어서, 상기 엔진과 상기 기어변속장치(A)를 연결하는 동력전달 경로중에 설치되어 복수개의 유압클러치를 가진 제 1 클러치기구, 동력의 전달/차단을 급속히 행할 수 있는 급속작동클러치(19)와 상기 급속작동클러치(19)를 조작하는 클러치 조작수단과 상기 기어변속장치(A)를 변속조작하는 액튜에이터(T1,T2)으로 이루어져 있고 상기 기어변속장치(A)와 차륜(7,7)을 연결하는 동력전달 경로중에 설치된 제 2 클러치기구 및 상기 액튜에이터(T1,T2)의 변속조작의 개시에 응답하여 상기 클러치 조작수단(26)을 통하여 급속작동클러치(19)를 차단함과 동시에, 상기 제 1 클러치기구의 전달상태의 유압클러치를 소정저압(P2)까지 감압시키는 제 1 제어수단과, 상기 액튜에이터(T1,T2)의 변속조작의 종료에 응답하여 상기 클러치 조작수단(26)을 통하여 급속작동클러치(19)를 걸어맞춤과 동시에 상기 제 1 클러치기구의 소정저압상태(P2)의 유압클러치에의 유압을 점차적으로 상승시키는 제 2 제어수단으로 이루어졌으며 상기 제 1 클러치기구와 상기 클러치 조작수단과 상기 액튜에이터와 연동연결된 제어장치(30)로 구성되어 있으며, 상기 제 1 클러치기구는 전후진용 전환장치로서 형성되어 있고, 엔진동력을 직접 상기 기어변속장치(A)에 전달하는 전진유압클러치(5), 엔진동력을 역전시켜 상기 기어변속장치(A)에 전달하는 후진유압클러치(6) 및 유압을 공급함으로써 상기 전진, 후진유압클러치(5,6)를 선택적으로 조작가능한 전후진 전환수단을 포함하고 있는 것을 특징으로 하는 조작시스템.
  2. 제 1 항에 있어서, 상기 전후진 전환수단은 상기 전후진유압클러치(5,6)에 연동연결된 전환밸브(32)와, 이 전환밸브를 조작하는 전후진 전환레버(33)에 의하여 구성되어 있는 것을 특징으로 하는 조작시스템.
  3. 제 1 항에 있어서, 상기 제 1 클러치기구에는 전자비례밸브(27)가 연동연결되어 있고, 이 전자비례밸브의 작동에 의하여 상기 전후진유압클러치(5,6)의 개폐조작이 실시되는 것을 특징으로 하는 조작시스템.
  4. 제 1 항에 있어서, 상기 클러치 조작수단은 상기 액튜에이터(T1,T2)의 파일롯유로(16)와 연동하는 조작밸브(26)에 의하여 구성되어 있는 것을 특징으로 하는 조작시스템.
  5. 제 4 항에 있어서, 상기 조작밸브(26)는 상기 파일롯유로(16)의 유압의 변화에 응답하여 급속히 연통위치 또는 연통차단위치로 전환조작되는 것을 특징으로 하는 조작시스템.
  6. 제 1 항에 있어서, 상기 제어장치(30)는 상기 기어변속장치(A)에 연통연결되어, 상기 기어변속장치의 변속조작에 응답하여 상기 제 1 클러치기구와 연통연결된 전자비례압력밸브(27)를 개폐하기 위한 출력신호를 발생하는 것을 특징으로 하는 조작시스템.
  7. 제 1 항에 있어서, 상기 제 1 제어수단은 상기 기어변속장치와 연동연결되어 기어변속조작의 개시에 응답하여 그 내부압력이 저하하는 상기 파일롯유로(16); 상기 파일롯유로의 압력변화를 검출하는 압력센서(35) ; 상기 센서에 의하여 검출된 압력저하에 대응하는 제 1 출력신호를 생성하는 제어장치(30) ; 상기 제 1 클러치기구에 연동연결되어, 상기 제 1 클러치기구의 개폐조작하고 상기 제 1 출력신호에 응답하여 점차적으로 연통차단되는 전자비례압력밸브(27) 및 상기 파일롯유로(16)의 압력저하에 응답하여 급속히 단절조작되는 상기 급속작동클러치(19)로 구성되어 있는 것을 특징으로 하는 조작시스템.
  8. 제 1 항에 있어서, 상기 제 2 제어수단은 상기 기어변속장치와 연동연결되어, 기어변속조작의 종료에 응답하여 그 내부압력이 상승하는 상기 파일롯유로(16) ; 상기 파일롯유로의 압력변화를 검출하는 압력센서(35) ; 상기 센서에 의하여 검출된 압력상승에 대응하는 제 2 출력신호를 생성하는 제어장치(30) ; 상기 제 1 클러치기구에 연동연결되어, 상기 제 1 클러치기구의 개폐조작을 하고 상기 제 2 출력신호에 응답하여 점차적으로 연통되는, 전자비례압력밸브(27) 및 상기 파일롯유로(16)의 압력상승에 응답하여 급속히 들어가기 조작되는 상기 급속작동클러치(19)로 구성되어 있는 것을 특징으로 하는 조작시스템.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930010603A 1992-07-03 1993-06-11 작업차의 주행변속구조 KR960015252B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP92-175854 1992-07-03
JP4175854A JP2806462B2 (ja) 1992-07-03 1992-07-03 作業車の走行変速構造

Publications (2)

Publication Number Publication Date
KR940000770A true KR940000770A (ko) 1994-01-10
KR960015252B1 KR960015252B1 (ko) 1996-11-04

Family

ID=16003365

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930010603A KR960015252B1 (ko) 1992-07-03 1993-06-11 작업차의 주행변속구조

Country Status (7)

Country Link
US (1) US5407042A (ko)
JP (1) JP2806462B2 (ko)
KR (1) KR960015252B1 (ko)
DE (1) DE4319147C2 (ko)
ES (1) ES2089942B1 (ko)
FR (1) FR2694359B1 (ko)
GB (1) GB2268554B (ko)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408472A1 (de) * 1994-03-12 1995-09-14 Zahnradfabrik Friedrichshafen Antriebsvorrichtung
US5651289A (en) * 1994-07-08 1997-07-29 Kubota Corporation Drive transmission system for working vehicle
US5492210A (en) * 1994-09-22 1996-02-20 General Motors Corporation Ratio interchange control valving
DE29508016U1 (de) * 1995-01-14 1995-09-07 Schmid, Emil, 92237 Sulzbach-Rosenberg Getriebeanordnung
DE19612863A1 (de) * 1996-03-30 1997-10-02 Zahnradfabrik Friedrichshafen Getriebesteuerung zur Reduzierung der thermischen Belastung von Schaltelementen eines Wendegetriebes
US6692409B2 (en) 2001-02-28 2004-02-17 Kubota Corporation Hydraulic change speed system for a working vehicle
US6564915B2 (en) * 2001-08-10 2003-05-20 Caterpillar Inc Power take-off clutch control system
US6851328B2 (en) * 2002-04-18 2005-02-08 Kubota Corporation Control apparatus for transmission
US7891930B2 (en) * 2006-01-17 2011-02-22 William Brown Hydraulically driven conveyor
JP2008208912A (ja) * 2007-02-26 2008-09-11 Kanzaki Kokyukoki Mfg Co Ltd 作業車用変速機構
US20120317965A1 (en) * 2010-02-17 2012-12-20 Volvo Construction Equipment Ab Automated hydraulic power system and a method of operating an automated hydraulic power system
CN102537268B (zh) * 2012-01-13 2014-09-03 杭州祥龙钻探设备有限公司 煤矿坑道勘探钻机的液压离合换挡变速箱
US9822873B2 (en) 2012-03-23 2017-11-21 Pacific Rim Engineered Products (1987) Ltd. Gear engagement mechanism for transmissions and related methods
CA2866935A1 (en) 2012-03-23 2013-09-26 Pacific Rim Engineered Products (1987) Ltd. Dual clutch type power transmission with alternative torque transmission path providing alternative ratios
DE102012209166A1 (de) * 2012-05-31 2013-12-05 Zf Friedrichshafen Ag Verfahren und Vorrichtung zum Ansteuern einer mobilen Arbeitsmaschine
US10228035B2 (en) 2016-06-20 2019-03-12 Kongsberg Automotive As Velocity dependent brake for clutch actuator

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1455754C3 (de) * 1965-11-04 1974-07-25 Dr.-Ing.H.C. F. Porsche Ag, 7000 Stuttgart Vorrichtung zum Steuern des Ein- und Ausrückens einer zwischen einem hydrodynamischen Drehmomentwandler und einem nachgeschalteten Zahnräderwechselgetriebe angeordneten Trennkupplung eines Kraftfahrzeuges
DE1655894A1 (de) * 1966-02-22 1970-03-05 Zahnradfabrik Friedrichshafen Antriebsanlage fuer Kraftfahrzeuge,insbesondere fuer landwirtschaftliche Nutzfahrzeuge
DE2405023C2 (de) * 1974-02-02 1982-07-08 Klöckner-Humboldt-Deutz AG, 5000 Köln Zahnräderwechselgetriebe in Gruppenbauart für Kraftfahrzeuge, insbesondere für Land- und/oder bauwirtschaftlich nutzbare Kraftfahrzeuge
US4046160A (en) * 1976-02-02 1977-09-06 International Harvester Company Transmission clutches with sequence valve and piston-controlled pressure modulator
DE2751093A1 (de) * 1977-11-16 1979-05-17 Holder Geb Triebwerk fuer einen schlepper
US4422536A (en) * 1981-05-08 1983-12-27 Deere & Company Transmission control system with improved modulation rate regulating valve
US4711329A (en) * 1985-08-28 1987-12-08 Kubota, Ltd. Hydraulic circuit construction for power shift transmission
US4768635A (en) * 1985-11-25 1988-09-06 Honda Giken Kogyo Kabushiki Kaisha Control for the clutch of a fluid torque converter in a vehicular transmission
US4794807A (en) * 1986-06-12 1989-01-03 Kubota, Ltd. Tractor transmission
US4843902A (en) * 1986-08-07 1989-07-04 Cooper Industries, Inc. Control system for powershift transmission clutches
US4881417A (en) * 1987-04-13 1989-11-21 Kubota Ltd. Transmission system for vehicle
US4871048A (en) * 1987-09-21 1989-10-03 Dresser Industries, Inc. Control system for vehicle transmissions
US4881371A (en) * 1988-07-26 1989-11-21 Clark Equipment Company Auxiliary coupler pressure relief hydraulic system with pump drive ignition switch relief
GB2225074B (en) * 1988-11-22 1992-12-02 Kubota Ltd Propelling drive control apparatus for working vehicle
FR2642017B1 (fr) * 1989-01-26 1994-01-21 Kubota Ltd Structure de commande de vitesse notamment pour un tracteur agricole
GB2235262B (en) * 1989-07-21 1993-09-29 Kubota Kk Hydraulically controllable transmission
US5058455A (en) * 1989-08-31 1991-10-22 Kanzaki Kokyukoki Mfg., Ltd. Transmission assembly for tractor
JPH03209056A (ja) * 1990-01-09 1991-09-12 Kubota Corp 作業車の走行変速構造
US5109964A (en) * 1990-03-08 1992-05-05 Kubota Corporation Conical roller type clutch apparatus
JPH0439464A (ja) * 1990-06-05 1992-02-10 Kubota Corp 作業車の走行変速構造
JP2599825B2 (ja) * 1990-12-28 1997-04-16 株式会社クボタ 作業車の前後進切換構造

Also Published As

Publication number Publication date
JPH0617924A (ja) 1994-01-25
KR960015252B1 (ko) 1996-11-04
ES2089942R (ko) 1997-04-16
ES2089942B1 (es) 1998-01-01
FR2694359B1 (fr) 1997-05-09
GB2268554B (en) 1995-04-19
DE4319147A1 (de) 1994-01-13
ES2089942A2 (es) 1996-10-01
FR2694359A1 (fr) 1994-02-04
US5407042A (en) 1995-04-18
GB9311218D0 (en) 1993-07-21
JP2806462B2 (ja) 1998-09-30
GB2268554A (en) 1994-01-12
DE4319147C2 (de) 2000-07-06

Similar Documents

Publication Publication Date Title
KR940000770A (ko) 작업차의 주행변속구조
US4488457A (en) Malfunction prevention device of automotive hydraulic transmission
US4729408A (en) Control system for independent control of fluid actuated devices
JPS6331029B2 (ko)
CA1175732A (en) Electro-hydraulic control system
US20160016587A1 (en) Automatic transmission
US6319164B1 (en) Electro-hydraulic control with a manual selection valve
US5486146A (en) Hydraulic control circuit for automatic transmission
KR950002992B1 (ko) 자동변속장치용 전유제어장치
JP2658717B2 (ja) シフトバイワイヤ自動変速機用変速制御装置
US4574925A (en) Motor and gearing controls for torque converter lock-up clutch
KR930000567B1 (ko) 유체 작동식 장치를 독립적으로 제어하는 제어시스템
US6712725B2 (en) Hydraulic control apparatus of an automatic transmission
US4336869A (en) Steering clutch and brake control for track-type vehicles
KR960029675A (ko) 유압작동식 변속기의 제어장치
US20160109019A1 (en) Hydraulic control device of automatic transmission
US4562905A (en) Clutch operation control system for fluid torque converters
US5797294A (en) Shift valve
US4817770A (en) Control system for independent control of fluid actuated devices
JPH0972410A (ja) 作業車の走行変速構造
KR940013959A (ko) 자동차용 자동 변속기의 유압제어장치
JP4423528B2 (ja) 自動変速機制御装置
JPH0372846B2 (ko)
KR100299791B1 (ko) 자동변속기의유압제어시스템
JPH04372429A (ja) 作業車の走行伝動構造

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee