FR2656910B1 - Transmission a commande hydraulique utilise pour la propulsion d'un vehicule, en particulier pour un tracteur agricole. - Google Patents

Transmission a commande hydraulique utilise pour la propulsion d'un vehicule, en particulier pour un tracteur agricole.

Info

Publication number
FR2656910B1
FR2656910B1 FR9011974A FR9011974A FR2656910B1 FR 2656910 B1 FR2656910 B1 FR 2656910B1 FR 9011974 A FR9011974 A FR 9011974A FR 9011974 A FR9011974 A FR 9011974A FR 2656910 B1 FR2656910 B1 FR 2656910B1
Authority
FR
France
Prior art keywords
propulsion
vehicle
agricultural tractor
hydraulically controlled
controlled transmission
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
FR9011974A
Other languages
English (en)
Other versions
FR2656910A1 (fr
Inventor
Masaaki Hama
Junichirou Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Publication of FR2656910A1 publication Critical patent/FR2656910A1/fr
Application granted granted Critical
Publication of FR2656910B1 publication Critical patent/FR2656910B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F16D25/14—Fluid pressure 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D48/04—Control by fluid pressure providing power assistance
    • 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
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F16H61/065—Smoothing ratio shift by controlling rate of change of fluid pressure using fluid control means
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0209—Control by fluid pressure characterised by fluid valves having control pistons, e.g. spools
    • 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
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F16H61/065—Smoothing ratio shift by controlling rate of change of fluid pressure using fluid control means
    • F16H61/068—Smoothing ratio shift by controlling rate of change of fluid pressure using fluid control means using an orifice control valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Control Of Transmission Device (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
FR9011974A 1990-01-09 1990-09-28 Transmission a commande hydraulique utilise pour la propulsion d'un vehicule, en particulier pour un tracteur agricole. Expired - Fee Related FR2656910B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002358A JPH03209056A (ja) 1990-01-09 1990-01-09 作業車の走行変速構造

Publications (2)

Publication Number Publication Date
FR2656910A1 FR2656910A1 (fr) 1991-07-12
FR2656910B1 true FR2656910B1 (fr) 1994-10-07

Family

ID=11527043

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9011974A Expired - Fee Related FR2656910B1 (fr) 1990-01-09 1990-09-28 Transmission a commande hydraulique utilise pour la propulsion d'un vehicule, en particulier pour un tracteur agricole.

Country Status (4)

Country Link
US (1) US5072814A (fr)
JP (1) JPH03209056A (fr)
FR (1) FR2656910B1 (fr)
GB (1) GB2239910B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05500101A (ja) * 1989-08-26 1993-01-14 ツアーンラートファブリーク、フリードリッヒスハーフェン、アクチエンゲゼルシャフト 圧力制御装置
DE4117737A1 (de) * 1991-05-30 1992-12-03 Daimler Benz Ag Selbsttaetige schaltvorrichtung eines mehrgaengigen zahnraederwechselgetriebes
DE4117739A1 (de) * 1991-05-30 1992-12-03 Daimler Benz Ag Selbsttaetige schaltvorrichtung eines mehrgaengigen zahnraederwechselgetriebes
JP2806462B2 (ja) * 1992-07-03 1998-09-30 株式会社クボタ 作業車の走行変速構造
GB2372080B (en) * 2001-02-12 2004-09-29 Luk Lamellen & Kupplungsbau Hydraulic actuation systems
US6729454B2 (en) * 2002-05-06 2004-05-04 Deere & Company Transmission with a two-step actuator valve
GB2468867A (en) * 2009-03-24 2010-09-29 Gm Global Tech Operations Inc Device for actuating a dual clutch transmission having flow and pressure regulators
CN103398171B (zh) * 2013-07-31 2015-11-18 长城汽车股份有限公司 双离合器自动变速器及其液压换挡控制系统
CN107435733B (zh) * 2017-05-24 2022-10-28 捷孚传动科技有限公司 换档液压控制系统及变速箱

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046162A (en) * 1976-05-14 1977-09-06 Deere & Company Modulation control valve for clutches
US4465168A (en) * 1981-11-25 1984-08-14 Kabushiki Kaisha Komatsu Seisakusho Pressure control system for a transmission
JPS60205025A (ja) * 1984-03-30 1985-10-16 Aisin Seiki Co Ltd 副室付クラツチ圧制御機構
JPS61252922A (ja) * 1985-05-01 1986-11-10 Kubota Ltd 作業機の油圧クラツチ構造
US4711329A (en) * 1985-08-28 1987-12-08 Kubota, Ltd. Hydraulic circuit construction for power shift transmission
JPS62215155A (ja) * 1986-03-13 1987-09-21 Kubota Ltd 油圧操作式ギヤ変速装置
JPS6331852A (ja) * 1986-07-25 1988-02-10 Mk Seiko Co Ltd 洗車装置
JPS63219920A (ja) * 1987-03-10 1988-09-13 Daikin Mfg Co Ltd モジユレ−トバルブ装置
JPH0718458B2 (ja) * 1987-06-15 1995-03-06 株式会社クボタ 油圧クラッチの圧力調整構造
JPS63318352A (ja) * 1987-06-22 1988-12-27 Kubota Ltd 油圧クラッチの圧力調整機構
JPH01153848A (ja) * 1987-12-10 1989-06-16 Kubota Ltd 作業車の走行用操作構造
US4924983A (en) * 1987-12-10 1990-05-15 Kubota, Ltd. Propelling clutch apparatus for a working vehicle
US4949264A (en) * 1988-09-29 1990-08-14 Kubota, Ltd. Transmission having electromagnetic proportional reduction valve

Also Published As

Publication number Publication date
FR2656910A1 (fr) 1991-07-12
GB9020562D0 (en) 1990-10-31
US5072814A (en) 1991-12-17
GB2239910A (en) 1991-07-17
JPH03209056A (ja) 1991-09-12
GB2239910B (en) 1994-02-09

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Legal Events

Date Code Title Description
ST Notification of lapse