GB1322309A - Hydraulic power-assisted steering systems - Google Patents

Hydraulic power-assisted steering systems

Info

Publication number
GB1322309A
GB1322309A GB2228972A GB2228972A GB1322309A GB 1322309 A GB1322309 A GB 1322309A GB 2228972 A GB2228972 A GB 2228972A GB 2228972 A GB2228972 A GB 2228972A GB 1322309 A GB1322309 A GB 1322309A
Authority
GB
United Kingdom
Prior art keywords
steering
pump
hydraulic power
assisted steering
potentiometers
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
Application number
GB2228972A
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of GB1322309A publication Critical patent/GB1322309A/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Power Steering Mechanism (AREA)

Abstract

1322309 Power-assisted steering ZAHNRADFABRIK FRIEDRICHSHAFEN AG 12 May 1972 [14 May 1971] 22289/72 Heading B7H An hydraulic power steering apparatus which comprises a supply pump 3, control valve 2, control pump 20 and steering motor 8 is provided with an electrical system for synchronizing the angular position of the steering wheel and of the steered wheels. Potentiometers 27, 28 are mounted on the shaft 19, which drives the control pump 20, and on the track rod 17 respectively. Their outputs are fed to an amplifier 29 which produces an output only when the two potentiometers are not exactly synchronized and which powers a reversible electric motor 26 which operates a valve 24 to shortcircuit the control pump 20 until coincidence is re-established. In the event of the failure of pump 3, the electric system is switched off by pressure switch 12 and manual steering is possible.
GB2228972A 1971-05-14 1972-05-12 Hydraulic power-assisted steering systems Expired GB1322309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712123933 DE2123933C3 (en) 1971-05-14 1971-05-14 Hydrostatic power steering device

Publications (1)

Publication Number Publication Date
GB1322309A true GB1322309A (en) 1973-07-04

Family

ID=5807849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2228972A Expired GB1322309A (en) 1971-05-14 1972-05-12 Hydraulic power-assisted steering systems

Country Status (6)

Country Link
JP (1) JPS5121860B1 (en)
DE (1) DE2123933C3 (en)
FR (1) FR2139461A5 (en)
GB (1) GB1322309A (en)
IT (1) IT957840B (en)
SE (1) SE398854B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105564500A (en) * 2014-10-30 2016-05-11 操纵技术Ip控股公司 Pressure sensor autotrim algorithm
CN112498467A (en) * 2020-12-09 2021-03-16 甘肃省机械科学研究院有限责任公司 Self-returning steering control device for steering wheel of tracked vehicle

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310601A1 (en) * 1973-03-02 1974-09-05 Bosch Gmbh Robert HYDROSTATIC STEERING DEVICE
DE3414579C2 (en) * 1984-04-17 1995-03-23 Linde Ag Vehicle steering axle
FR2589419B1 (en) * 1985-10-30 1990-09-21 Moreau Ets Jean DEVICE FOR CONTROLLING A STEERING WHEEL OF A MACHINE
US4771846A (en) * 1986-09-22 1988-09-20 Trw Inc. Apparatus for establishing steering feel
JP2669474B2 (en) * 1989-07-12 1997-10-27 住友イートン機器株式会社 All hydraulic power steering system
DE19546733C1 (en) * 1995-12-14 1997-03-27 Daimler Benz Ag Hydraulic servo steering for motor vehicle
DE20304336U1 (en) 2003-03-18 2003-07-31 TRW Fahrwerksysteme GmbH & Co KG, 40547 Düsseldorf Motor vehicle power steer-by-wire steering system, has gear hydraulic motor joined via control hydraulic circuit to control hydraulic motor
DE10344662A1 (en) * 2003-09-25 2005-05-04 Cuadro Diogenes Perez Hydraulic steering system for motor vehicle has regulating pump for high frequency intermittent transport operation as hydraulic pressure source for operating servo motor in one or other direction

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1947205A1 (en) * 1969-09-18 1971-04-08 Zahnradfabrik Friedrichshafen Hydrostatic steering system, especially for motor vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105564500A (en) * 2014-10-30 2016-05-11 操纵技术Ip控股公司 Pressure sensor autotrim algorithm
CN112498467A (en) * 2020-12-09 2021-03-16 甘肃省机械科学研究院有限责任公司 Self-returning steering control device for steering wheel of tracked vehicle

Also Published As

Publication number Publication date
SE398854B (en) 1978-01-23
FR2139461A5 (en) 1973-01-05
JPS5121860B1 (en) 1976-07-06
DE2123933B2 (en) 1980-08-21
DE2123933C3 (en) 1981-07-16
IT957840B (en) 1973-10-20
DE2123933A1 (en) 1972-11-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee