WO2008123376A1 - 静油圧式無段変速機を備えた車両の制御装置 - Google Patents

静油圧式無段変速機を備えた車両の制御装置 Download PDF

Info

Publication number
WO2008123376A1
WO2008123376A1 PCT/JP2008/055948 JP2008055948W WO2008123376A1 WO 2008123376 A1 WO2008123376 A1 WO 2008123376A1 JP 2008055948 W JP2008055948 W JP 2008055948W WO 2008123376 A1 WO2008123376 A1 WO 2008123376A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic pump
vehicle
controller
continuously variable
variable transmission
Prior art date
Application number
PCT/JP2008/055948
Other languages
English (en)
French (fr)
Inventor
Yuji Fukuda
Naritoshi Ohtsukasa
Original Assignee
Komatsu Ltd.
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 Komatsu Ltd. filed Critical Komatsu Ltd.
Priority to JP2009509178A priority Critical patent/JP5426366B2/ja
Priority to CN200880017558.3A priority patent/CN101680542B/zh
Priority to US12/531,584 priority patent/US8683794B2/en
Priority to DE112008000724.1T priority patent/DE112008000724B4/de
Publication of WO2008123376A1 publication Critical patent/WO2008123376A1/ja

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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/421—Motor capacity control by electro-hydraulic control means, e.g. using solenoid 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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4008—Control of circuit 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
    • 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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/431—Pump capacity control by electro-hydraulic control means, e.g. using solenoid 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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • F16H61/468—Automatic regulation in accordance with output requirements for achieving a target input torque
    • 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
    • F16H59/14—Inputs being a function of torque or torque demand
    • F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
    • F16H2059/186—Coasting
    • 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
    • F16H59/68—Inputs being a function of gearing status
    • F16H2059/6838—Sensing gearing status of hydrostatic transmissions
    • F16H2059/6861—Sensing gearing status of hydrostatic transmissions the pressures, e.g. high, low or differential pressures
    • 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
    • F16H61/0213—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 characterised by the method for generating shift signals
    • F16H2061/0232—Selecting ratios for bringing engine into a particular state, e.g. for fast warming up or for reducing exhaust emissions
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
    • 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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/423—Motor capacity control by fluid pressure 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
    • 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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/433—Pump capacity control by fluid pressure control means

Landscapes

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

Abstract

　【課題】　油圧モータ等のオーバーランを抑制すべき時期を正確に判定して、作業効率の低下を招かないようにする。 【解決手段】 検出された車両進行方向と検出された油圧ポンプ１の各ポート１ａ、１ｂ側の検出圧Ｐａ、Ｐｂとに基づいて、油圧ポンプ１の吐出ポート１ａ側の圧力Ｐａと油圧ポンプ１の吸込みポート１ｂ側の圧力Ｐｂとの差圧ΔＰが算出される。算出された差圧に応じて、エンジン４、油圧ポンプ１、油圧モータ２の少なくともいずれか一つのオーバーランが抑制されるように、エンジン４、油圧ポンプ１の少なくともいずれかが制御される。  
PCT/JP2008/055948 2007-03-30 2008-03-27 静油圧式無段変速機を備えた車両の制御装置 WO2008123376A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009509178A JP5426366B2 (ja) 2007-03-30 2008-03-27 静油圧式無段変速機を備えた車両の制御装置
CN200880017558.3A CN101680542B (zh) 2007-03-30 2008-03-27 具备静液压式无级变速器的车辆的控制装置
US12/531,584 US8683794B2 (en) 2007-03-30 2008-03-27 Controller of vehicle with hydrostatic continuously variable transmission
DE112008000724.1T DE112008000724B4 (de) 2007-03-30 2008-03-27 Steuerung eines Fahrzeugs mit hydrostatischem, stufenlos variablem Getriebe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007093136 2007-03-30
JP2007-093136 2007-03-30

Publications (1)

Publication Number Publication Date
WO2008123376A1 true WO2008123376A1 (ja) 2008-10-16

Family

ID=39830864

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/055948 WO2008123376A1 (ja) 2007-03-30 2008-03-27 静油圧式無段変速機を備えた車両の制御装置

Country Status (5)

Country Link
US (1) US8683794B2 (ja)
JP (1) JP5426366B2 (ja)
CN (1) CN101680542B (ja)
DE (1) DE112008000724B4 (ja)
WO (1) WO2008123376A1 (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010070961A1 (ja) * 2008-12-17 2010-06-24 株式会社小松製作所 静油圧式変速車両の制御装置
WO2012033193A1 (ja) * 2010-09-10 2012-03-15 株式会社小松製作所 作業車両のエンジンオーバーラン防止制御装置
CN105090478A (zh) * 2014-05-23 2015-11-25 通用汽车环球科技运作有限责任公司 混合动力系统充填检测
WO2016042649A1 (ja) * 2014-09-18 2016-03-24 株式会社小松製作所 作業車両及び作業車両の制御方法
KR101927449B1 (ko) 2014-12-26 2018-12-10 엘에스엠트론 주식회사 유압 기계식 변속장치
WO2019003760A1 (ja) * 2017-06-27 2019-01-03 株式会社小松製作所 作業車両及び作業車両の制御方法
JP2019143770A (ja) * 2018-02-23 2019-08-29 株式会社小松製作所 作業車両、及び、作業車両の制御方法
WO2021124825A1 (ja) * 2019-12-20 2021-06-24 川崎重工業株式会社 静油圧無段変速システム

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102808915B (zh) * 2011-05-31 2015-01-28 北京理工大学 高速履带式车辆用集成综合式静液驱动无级传动机构
JP5851337B2 (ja) * 2012-05-11 2016-02-03 株式会社クボタ 作業車
US9303633B2 (en) 2012-09-14 2016-04-05 Caterpillar Inc. Over-speed control system and method
EP2767739B1 (de) * 2013-02-19 2018-10-24 Dana Rexroth Transmission Systems S.r.l. Leistungsverzweigtes Getriebe für einen Fahrantrieb, Verfahren zur Steuerung des Getriebes
WO2016056079A1 (ja) * 2014-10-08 2016-04-14 株式会社小松製作所 作業車両及び作業車両の制御方法
WO2017010484A1 (ja) * 2015-07-13 2017-01-19 住友建機株式会社 道路機械
US10618527B2 (en) * 2016-03-31 2020-04-14 Kubota Corporation Hydraulic system for work machine
DE102016205891A1 (de) * 2016-04-08 2017-10-12 Robert Bosch Gmbh Hydrostatischer Fahrantrieb und Fahrzeug mit einem solchen hydrostatischen Fahrantrieb
CN106763743B (zh) * 2016-12-26 2019-02-12 潍柴动力股份有限公司 一种静液压传动移动换档控制方法及系统
DE102017200241A1 (de) * 2017-01-10 2018-07-12 Robert Bosch Gmbh Hydrostatischer Fahrantrieb für ein Fahrzeug
DE102017202273A1 (de) * 2017-02-14 2018-08-16 Robert Bosch Gmbh Hydrostatisches Getriebe und Verfahren zur Bremsung damit
DE102017202281A1 (de) * 2017-02-14 2018-08-16 Robert Bosch Gmbh Hydrostatisches Getriebe und Verfahren zur Bremsung damit
CN106763564B (zh) * 2017-02-15 2018-11-27 苏州萨伯工业设计有限公司 机液混合五挡传动方法
DE102018216750A1 (de) * 2018-09-28 2020-04-02 Robert Bosch Gmbh Verfahren zur Steuerung einer Axialkolbenpumpe und Antriebseinheit mit einer derartigen Axialkolbenpumpe und hydrostatischer Fahrantrieb mit einer derartigen Antriebseinheit
JP7193288B2 (ja) * 2018-09-28 2022-12-20 日立建機株式会社 作業車両
DE102020206968A1 (de) 2020-06-04 2021-12-23 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur adaption eines drucks einer hydropumpe eines fahrantriebes
EP4001697A1 (en) * 2020-11-16 2022-05-25 Danfoss Power Solutions ApS Hydrostatic transmission
IT202100026342A1 (it) * 2021-10-14 2023-04-14 Cnh Ind Italia Spa Metodo ed apparato per controllare una trasmissione idrostatica di un veicolo da lavoro

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1162845A (ja) * 1997-08-27 1999-03-05 Toyo Umpanki Co Ltd 産業用車両
JPH11210880A (ja) * 1998-01-22 1999-08-03 Komatsu Ltd 油圧駆動式作業車両の走行駆動装置およびその制御方法
JP2004028229A (ja) * 2002-06-26 2004-01-29 Komatsu Ltd 油圧駆動車の車速制御装置およびその制御方法
JP2006007819A (ja) * 2004-06-22 2006-01-12 Kanzaki Kokyukoki Mfg Co Ltd 作業車両の速度制御方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0198755A (ja) * 1987-07-31 1989-04-17 Shimadzu Corp 液圧式伝動装置
JPH07112792B2 (ja) * 1989-10-30 1995-12-06 株式会社島津製作所 液圧式スロットル開度制御装置
JPH03219167A (ja) * 1990-01-24 1991-09-26 Hitachi Constr Mach Co Ltd 建設機械の油圧閉回路
EP0513382A4 (en) * 1990-11-30 1994-07-20 Shimadzu Corp Stepless speed change gear for vehicle
DE4226453A1 (de) * 1992-08-10 1994-02-17 Sauer Sundstrand Gmbh & Co Antriebseinrichtung für einen automativen Fahrantrieb, z. B. bei einem Gabelstapler oder Radlader
JP2982606B2 (ja) * 1994-03-01 1999-11-29 株式会社 小松製作所 静油圧−機械式変速機の制御装置
JP2000249224A (ja) * 1999-03-03 2000-09-12 Honda Motor Co Ltd 車両用油圧式無段変速機の制御装置
US6202016B1 (en) * 1999-08-10 2001-03-13 Eaton Corporation Shift on the go transmission system
JP2001235032A (ja) 2000-02-24 2001-08-31 Komatsu Ltd 油圧走行駆動装置
JP2001280465A (ja) * 2000-03-31 2001-10-10 Honda Motor Co Ltd 無段変速機の制御方法
US6609368B2 (en) * 2001-06-04 2003-08-26 Caterpillar S.A.R.L. Automatic downshift and override control for a transmission
DE10211799A1 (de) * 2002-03-16 2003-10-02 Deere & Co Antriebssystem eines Arbeitsfahrzeugs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1162845A (ja) * 1997-08-27 1999-03-05 Toyo Umpanki Co Ltd 産業用車両
JPH11210880A (ja) * 1998-01-22 1999-08-03 Komatsu Ltd 油圧駆動式作業車両の走行駆動装置およびその制御方法
JP2004028229A (ja) * 2002-06-26 2004-01-29 Komatsu Ltd 油圧駆動車の車速制御装置およびその制御方法
JP2006007819A (ja) * 2004-06-22 2006-01-12 Kanzaki Kokyukoki Mfg Co Ltd 作業車両の速度制御方法

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010070961A1 (ja) * 2008-12-17 2010-06-24 株式会社小松製作所 静油圧式変速車両の制御装置
WO2010070962A1 (ja) * 2008-12-17 2010-06-24 株式会社小松製作所 静油圧式変速車両の制御装置
CN102245941A (zh) * 2008-12-17 2011-11-16 株式会社小松制作所 静液压式变速车辆的控制装置
CN102245940A (zh) * 2008-12-17 2011-11-16 株式会社小松制作所 静液压式变速车辆的控制装置
JP5274580B2 (ja) * 2008-12-17 2013-08-28 株式会社小松製作所 静油圧式変速車両の制御装置
JP5274581B2 (ja) * 2008-12-17 2013-08-28 株式会社小松製作所 静油圧式変速車両の制御装置
US8532888B2 (en) 2008-12-17 2013-09-10 Komatsu Ltd. Control device for hydraulic transmission vehicle
US8725364B2 (en) 2008-12-17 2014-05-13 Komatsu Ltd. Control device for hydraulic transmission vehicle
US9091342B2 (en) 2008-12-17 2015-07-28 Komatsu Ltd. Control device for hydrostatic transmission vehicle
WO2012033193A1 (ja) * 2010-09-10 2012-03-15 株式会社小松製作所 作業車両のエンジンオーバーラン防止制御装置
JP2012057761A (ja) * 2010-09-10 2012-03-22 Komatsu Ltd 作業車両のエンジンオーバーラン防止制御装置
US8855871B2 (en) 2010-09-10 2014-10-07 Komatsu Ltd. Engine overrun-preventing control device for work vehicle
CN105090478A (zh) * 2014-05-23 2015-11-25 通用汽车环球科技运作有限责任公司 混合动力系统充填检测
WO2016042649A1 (ja) * 2014-09-18 2016-03-24 株式会社小松製作所 作業車両及び作業車両の制御方法
JP5902877B1 (ja) * 2014-09-18 2016-04-13 株式会社小松製作所 作業車両及び作業車両の制御方法
CN105992618A (zh) * 2014-09-18 2016-10-05 株式会社小松制作所 作业车辆和作业车辆的控制方法
KR101927449B1 (ko) 2014-12-26 2018-12-10 엘에스엠트론 주식회사 유압 기계식 변속장치
WO2019003760A1 (ja) * 2017-06-27 2019-01-03 株式会社小松製作所 作業車両及び作業車両の制御方法
JPWO2019003760A1 (ja) * 2017-06-27 2020-04-23 株式会社小松製作所 作業車両及び作業車両の制御方法
US11125327B2 (en) 2017-06-27 2021-09-21 Komatsu Ltd. Work vehicle and control method for work vehicle
JP7105771B2 (ja) 2017-06-27 2022-07-25 株式会社小松製作所 作業車両及び作業車両の制御方法
JP2019143770A (ja) * 2018-02-23 2019-08-29 株式会社小松製作所 作業車両、及び、作業車両の制御方法
JP7156806B2 (ja) 2018-02-23 2022-10-19 株式会社小松製作所 作業車両、及び、作業車両の制御方法
WO2021124825A1 (ja) * 2019-12-20 2021-06-24 川崎重工業株式会社 静油圧無段変速システム
US11952952B2 (en) 2019-12-20 2024-04-09 Kawasaki Jukogyo Kabushiki Kaisha Hydraulic static transmission system

Also Published As

Publication number Publication date
JP5426366B2 (ja) 2014-02-26
JPWO2008123376A1 (ja) 2010-07-15
DE112008000724T5 (de) 2010-03-04
CN101680542A (zh) 2010-03-24
DE112008000724B4 (de) 2021-03-18
US8683794B2 (en) 2014-04-01
CN101680542B (zh) 2014-07-23
US20100083652A1 (en) 2010-04-08

Similar Documents

Publication Publication Date Title
WO2008123376A1 (ja) 静油圧式無段変速機を備えた車両の制御装置
WO2009038016A1 (ja) エンジンの制御装置
EP2444299A3 (en) Hydraulic power steering system
WO2008012558A3 (en) Hydrostatic regenerative drive system
WO2011150010A3 (en) Hydraulic system having implement and steering flow sharing
EP1820909A3 (en) Hydraulic controlling device of working machine
WO2008111616A1 (ja) 作業車両の制御装置
WO2007061956A3 (en) System and method for a pump with reduced form factor
WO2008120545A1 (ja) 作業車両の走行制御装置
EP2157245A3 (en) Hydraulic system for construction equipment
WO2008105500A1 (ja) 油圧駆動車両の原動機回転数制御装置
EP2112410A3 (en) Hydraulic drive working vehicle
EP3012489B1 (en) Hydraulic system for a vehicle
DE502005003675D1 (de) Hydraulisches getriebe
EP1586775A3 (en) Hydraulic pump unit, hydraulic pump set and working vehicle
EP1995155A3 (en) Traveling device for crawler type heavy equipment
WO2012125792A3 (en) Multiple function hydraulic system with a variable displacement pump and a hydrostatic pump-motor
EP2042661A3 (en) Backhoe hydraulic system
SE0950589L (sv) Anläggningsfordon
DK2102529T3 (da) Hydrostatisk køretøjsdrev
MY183492A (en) Hybrid vehicle
WO2008106923A3 (de) Hydraulisches system
EP2682648A3 (en) Travel control unit of working vehicle
WO2008139798A1 (ja) 油圧駆動車両
EP1970571A3 (en) Hydraulic circuit for construction machine

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880017558.3

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08739077

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009509178

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 12531584

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 1120080007241

Country of ref document: DE

RET De translation (de og part 6b)

Ref document number: 112008000724

Country of ref document: DE

Date of ref document: 20100304

Kind code of ref document: P

122 Ep: pct application non-entry in european phase

Ref document number: 08739077

Country of ref document: EP

Kind code of ref document: A1