ZA902648B - Load responsive flow amplified control system - Google Patents

Load responsive flow amplified control system

Info

Publication number
ZA902648B
ZA902648B ZA902648A ZA902648A ZA902648B ZA 902648 B ZA902648 B ZA 902648B ZA 902648 A ZA902648 A ZA 902648A ZA 902648 A ZA902648 A ZA 902648A ZA 902648 B ZA902648 B ZA 902648B
Authority
ZA
South Africa
Prior art keywords
control system
load responsive
amplified control
responsive flow
flow amplified
Prior art date
Application number
ZA902648A
Other languages
English (en)
Inventor
Gene R St Germain
R St Germain Gene
John B Waggoner
B Waggoner John
Original Assignee
Caterpillar Inc
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 Caterpillar Inc filed Critical Caterpillar Inc
Publication of ZA902648B publication Critical patent/ZA902648B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/09—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y10T137/2554—Reversing or 4-way valve systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Flow Control (AREA)
  • Paper (AREA)
ZA902648A 1989-05-03 1990-04-05 Load responsive flow amplified control system ZA902648B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/346,965 US4914913A (en) 1989-05-03 1989-05-03 Load responsive flow amplified control system for power steering

Publications (1)

Publication Number Publication Date
ZA902648B true ZA902648B (en) 1991-01-30

Family

ID=23361775

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA902648A ZA902648B (en) 1989-05-03 1990-04-05 Load responsive flow amplified control system

Country Status (8)

Country Link
US (1) US4914913A (de)
EP (1) EP0427791B1 (de)
JP (1) JP2766538B2 (de)
AU (1) AU625916B2 (de)
BR (1) BR8907551A (de)
DE (1) DE68926456T2 (de)
WO (1) WO1990013466A1 (de)
ZA (1) ZA902648B (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58902305D1 (de) * 1988-06-15 1992-10-22 Zahnradfabrik Friedrichshafen Allrad-lenkanlage fuer kraftfahrzeuge.
EP0477370B2 (de) * 1990-01-11 1998-11-04 Hitachi Construction Machinery Co., Ltd. Hydraulisches ventil
DE4126846C1 (de) * 1991-08-14 1993-02-25 Danfoss A/S, Nordborg, Dk
DE4126845C2 (de) * 1991-08-14 1994-02-17 Danfoss As Hydraulische Lenkeinrichtung für Fahrzeuge
US5546750A (en) * 1992-07-03 1996-08-20 Rexroth-Sigma Hydraulic circuit for pressure-controlling a hydraulic distributor of the open-center type
US5520262A (en) * 1995-04-28 1996-05-28 Caterpillar Inc. Electrohydraulic steering system
IT1280908B1 (it) * 1995-08-11 1998-02-11 Dayco Europe Spa Impianto di idroguida per un veicolo
US5904222A (en) * 1996-11-06 1999-05-18 Ford Motor Company Variable assist power steering using vehicle speed and steering pressure
US5934406A (en) * 1997-05-29 1999-08-10 Caterpillar Inc. Jerk control valve for pilot operated steering system
DE19834955B4 (de) * 1998-08-03 2008-02-07 Linde Material Handling Gmbh Hydrostatisches Antriebssystem
US6568499B2 (en) * 2000-11-21 2003-05-27 Unisia Jecs Corporation Power steering system for vehicles
US6880668B2 (en) * 2001-05-17 2005-04-19 Hitachi, Ltd. Power steering device
WO2003091082A2 (de) * 2002-04-25 2003-11-06 Bosch Rexroth Ag Hydraulische lenkeinrichtung
US6782698B2 (en) * 2002-09-26 2004-08-31 Eaton Corporation Steering control unit with low null band load sensing boost
FR2918029B1 (fr) * 2007-06-27 2009-11-20 Renault Sas Circuit hydraulique d'actionnement de direction assistee et vehicule automobile muni de celui-ci.
CN101255880B (zh) * 2007-12-10 2010-06-02 兰州理工大学 中位卸荷型流量放大阀
CN104029722B (zh) * 2014-01-23 2016-09-07 广西柳工机械股份有限公司 工程机械液压转向系统
US9878737B2 (en) 2015-02-20 2018-01-30 Caterpillar Inc. Hydraulic steering control system
DE102016002555A1 (de) * 2016-03-04 2017-09-07 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Vorrichtung und Verfahren zum Aufrechterhalten eines erzeugten hydraulischen Druckes
US11540942B2 (en) * 2018-07-26 2023-01-03 Alcon Inc. Redundant pneumatic circuit for reliability enhancement of vitrectomy instruments
US11318988B2 (en) 2019-01-14 2022-05-03 Caterpillar Inc. Hydraulic steering control system
US11926992B2 (en) * 2020-07-06 2024-03-12 Deere & Company Pilot neutralizing system
US11591017B2 (en) * 2020-07-06 2023-02-28 Deere & Company Pilot neutralizing system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566749A (en) * 1968-03-13 1971-03-02 Caterpillar Tractor Co Hydraulic flow amplifier valve
DE2305835A1 (de) * 1973-02-07 1974-08-15 Danfoss As Hydraulische steuereinrichtung, insbesondere lenkeinrichtung
DE2728004C2 (de) * 1977-06-22 1981-10-08 Danfoss A/S, 6430 Nordborg Hydraulische Steuervorrichtung für einen Servomotor, insbesondere für Fahrzeuglenkungen
DE2932847C2 (de) * 1979-08-14 1982-05-13 Danfoss A/S, 6430 Nordborg Hydraulische Steuervorrichtung für einen Servomotor, insbesondere für Fahrzeuglenkungen
US4311006A (en) * 1979-10-29 1982-01-19 General Signal Corporation Pressure compensated steering system
DE3146302C1 (de) * 1981-11-23 1982-12-09 Danfoss A/S, 6430 Nordborg Hydraulische Steuervorrichtung fuer einen Servomotor
JPH0775985B2 (ja) * 1984-12-10 1995-08-16 石炭露天掘機械技術研究組合 車両の液圧操向装置
US4640094A (en) * 1986-02-04 1987-02-03 Deere & Company Flow amplifying steering system
US4759182A (en) 1987-07-24 1988-07-26 Eaton Corporation Steering control unit with flow amplification

Also Published As

Publication number Publication date
JPH04501093A (ja) 1992-02-27
AU4213089A (en) 1990-11-29
DE68926456D1 (de) 1996-06-13
US4914913A (en) 1990-04-10
AU625916B2 (en) 1992-07-16
JP2766538B2 (ja) 1998-06-18
EP0427791A4 (en) 1993-08-18
BR8907551A (pt) 1991-06-18
EP0427791B1 (de) 1996-05-08
WO1990013466A1 (en) 1990-11-15
EP0427791A1 (de) 1991-05-22
DE68926456T2 (de) 1997-01-02

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