GB1146797A - Improvements in or relating to hydrostatic steering systems, particularly for motor vehicles - Google Patents

Improvements in or relating to hydrostatic steering systems, particularly for motor vehicles

Info

Publication number
GB1146797A
GB1146797A GB3544967A GB3544967A GB1146797A GB 1146797 A GB1146797 A GB 1146797A GB 3544967 A GB3544967 A GB 3544967A GB 3544967 A GB3544967 A GB 3544967A GB 1146797 A GB1146797 A GB 1146797A
Authority
GB
United Kingdom
Prior art keywords
pump
control
line
steering
wheel
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
GB3544967A
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 GB1146797A publication Critical patent/GB1146797A/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
    • 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
    • B62D5/093—Telemotor driven by steering wheel movement
    • B62D5/097—Telemotor driven by steering wheel movement gerotor type
    • 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
    • B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
    • B62D5/32—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means for telemotor systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)

Abstract

1,146,797. Power-assisted telemotor steering systems. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. 2 Aug., 1967 [3 Aug., 1966], No. 35449/67. Heading B7H. In a hydrostatic or telemotor steering system comprising a twin-output control pump 3 driven by a steering-wheel 1 and acting as a proportioning means, and a device which includes a pair of control valves 4, 5 and is operated in dependence on the movements of the steering wheel to control the direction of fluid flow from a servo-pump 8, two hydraulic circuits are supplied by the control pump 3 and each circuit comprises the two control valves and a servomotor 6, 7. As shown, each circuit is controlled by one-half of the control pump 3 and by both control valves 4, 5. On rotating the steering-wheel 1 clockwise firstly the ring gear of the epicyclic gear train 2 moves the valve spools 40, 50 of the valves 4, 5 to the right and left to determine the direction of fluid flow and secondly the sun-wheel of the gear train 2 rotates the control pump 3 which accepts from lines 13, 18 high-pressure fluid which is supplied from the servo-pump 8 through grooves 41<SP>1</SP> and 42 and through a groove 51<SP>1</SP>, bore 55<SP>1</SP> in the valve spool 50<SP>1</SP> and grooves 54<SP>1</SP>, 54 and directs it to the servomotors 7 and 6, respectively, through a line 17, grooves 52, 52<SP>1</SP> and a line 19 and through a line 14, grooves 44 and 43<SP>1</SP> and a line 16. Exhaust fluid from the servomotors is returned to a reservoir 9 through the control valves 4, 5 and lines 12. Should one of the lines 15, 16, 19, 20 break a respective valve may be operated manually to return the fluid being supplied to the broken line to a line 12 and the reservoir 9. Due to the reduction in pressure at the respective outlet of the control pump 3 the pump tends to act as a motor thereby indicating the breakage to a driver. In the neutral position of the steering wheel the control pump 3 blocks communication between the control valves 4, 5 holding the servomotors stationary. A valve 10 permits operation of the steering system manually should the pump 8 be inoperative.
GB3544967A 1966-08-03 1967-08-02 Improvements in or relating to hydrostatic steering systems, particularly for motor vehicles Expired GB1146797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ12366A DE1291643B (en) 1966-08-03 1966-08-03 Hydrostatic steering system, especially for motor vehicles

Publications (1)

Publication Number Publication Date
GB1146797A true GB1146797A (en) 1969-03-26

Family

ID=7622460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3544967A Expired GB1146797A (en) 1966-08-03 1967-08-02 Improvements in or relating to hydrostatic steering systems, particularly for motor vehicles

Country Status (6)

Country Link
DE (1) DE1291643B (en)
DK (1) DK117404B (en)
ES (1) ES343559A1 (en)
FR (1) FR1558303A (en)
GB (1) GB1146797A (en)
SE (1) SE341345B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443961A1 (en) * 1978-12-13 1980-07-11 Danfoss As HYDROSTATIC STEERING DEVICE
NL1022734C2 (en) * 2003-02-19 2004-08-23 Skf Ab Mechanical back up system for power steering, includes coupling device for activating connection between steering shaft and mechanical back up device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944883C2 (en) * 1979-11-07 1982-08-26 Danfoss A/S, 6430 Nordborg Hydrostatic steering device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443961A1 (en) * 1978-12-13 1980-07-11 Danfoss As HYDROSTATIC STEERING DEVICE
NL1022734C2 (en) * 2003-02-19 2004-08-23 Skf Ab Mechanical back up system for power steering, includes coupling device for activating connection between steering shaft and mechanical back up device

Also Published As

Publication number Publication date
SE341345B (en) 1971-12-20
DK117404B (en) 1970-04-20
DK117404C (en) 1970-04-20
ES343559A1 (en) 1968-08-01
FR1558303A (en) 1969-02-28
DE1291643B (en) 1969-03-27

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