GB1093087A - Hydraulic system - Google Patents

Hydraulic system

Info

Publication number
GB1093087A
GB1093087A GB14047/65A GB1404765A GB1093087A GB 1093087 A GB1093087 A GB 1093087A GB 14047/65 A GB14047/65 A GB 14047/65A GB 1404765 A GB1404765 A GB 1404765A GB 1093087 A GB1093087 A GB 1093087A
Authority
GB
United Kingdom
Prior art keywords
pump
conduit
cylinder
piston
valve
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
GB14047/65A
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW 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 TRW Inc filed Critical TRW Inc
Publication of GB1093087A publication Critical patent/GB1093087A/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
    • B62D5/30—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B17/00—Combinations of telemotor and servomotor systems
    • F15B17/02—Combinations of telemotor and servomotor systems in which a telemotor operates the control member of a servomotor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Fluid Gearings (AREA)
  • Power Steering Mechanism (AREA)

Abstract

1,093,087. Power assisted steering mechanism. T.R.W. Inc. April 2, 1965 [April 2, 1964], No. 14047/65. Heading B7H. [Also in Divisions F2 and G3] An hydraulic servo-system for a vehicle steering gear comprises a double-acting pistoncylinder 35, 34 actuated by fluid from a pump 15 in accordance with the flow through an adjustable orifice 12 supplied from a control pump 11. The direction of movement of the piston is controlled by a valve 25 in accordance with direction of delivery of the pump 11. Assuming that the pump 11 is driven to draw liquid from conduit 27 and delivers to conduit 26, the pressure difference created between these two conduits acts in cylinders 41, 42 to move the valve 25 to the right thus connecting the pairs of conduits 32, 26, 33, 27, 30, 28 and 31, 29. The delivery of the control pump 11 thus flows through conduits 32, 38 and acts on a spring-loaded piston-cylinder 20 to open adjustable orifices 12, 16. The inlet 27 of pump 11 is thus connected to the outlet of pump 15 through conduit 30, orifice 16, and conduit 33. The piston-cylinder 20 is also connected to the downstream side of orifice 12 through conduit 39 and the two orifices 12, 16 are continuously adjusted in accordance with the pressure drop across the orifice 12. The opening of the orifice 16 also allows the delivery of the pump 15 to flow to the piston-cylinder 34, 35 and the delivery of the control pump 11 is also connected into the conduit 30. The delivery pressure of pumps 11 and 15 which act in cylinders 61, 60 to control a valve 54 which determines the pressures in the cylinders 52, 53 actuating the valve 51. If the pump 15 fails the piston-cylinder 35, 34 may be actuated directly by the pump 11 which will draw fluid past a non-return valve 66 and deliver to the piston-cylinder 35, 34 as above through conduit 37. When the pump 11 acts in the opposite direction, the valve 25 is moved to the left and the piston-cylinder 35, 34 is then moved to the left. The pump 11 may be a gear pump actuated by the vehicle steering wheel. The pump 15 may be a variable displacement pump especially when this pump is used to supply other circuits as well or alternatively the pump displacement may be varied instead of providing the valve 51. The orifices 12, 16 and cylinder 20 may be arranged as a unit. (See Division F2.)
GB14047/65A 1964-04-02 1965-04-02 Hydraulic system Expired GB1093087A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US356851A US3218805A (en) 1964-04-02 1964-04-02 Hydraulic system

Publications (1)

Publication Number Publication Date
GB1093087A true GB1093087A (en) 1967-11-29

Family

ID=23403227

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14047/65A Expired GB1093087A (en) 1964-04-02 1965-04-02 Hydraulic system

Country Status (3)

Country Link
US (1) US3218805A (en)
DE (1) DE1271553B (en)
GB (1) GB1093087A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1291228B (en) * 1968-01-19 1969-03-20 Zahnradfabrik Friedrichshafen Hydrostatic steering system, especially for motor vehicles
FR2270467B1 (en) * 1974-03-29 1977-09-30 Mercier Bernard
DE2553748C3 (en) * 1975-11-29 1981-05-07 Danfoss A/S, 6430 Nordborg Hydraulic control device, in particular for vehicle steering

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE25036E (en) * 1957-04-19 1961-09-12 Fluid power steering system
US3016708A (en) * 1959-03-23 1962-01-16 Vickers Inc Power transmission
US2995012A (en) * 1960-03-18 1961-08-08 Ross Gear And Tool Company Inc Servo system
US2974491A (en) * 1960-04-04 1961-03-14 Ross Gear And Tool Company Inc Servo system

Also Published As

Publication number Publication date
US3218805A (en) 1965-11-23
DE1271553B (en) 1968-06-27

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