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GB1522014A - Hydraulic system for a vehicle including an auxiliary hydraulic control circuit - Google Patents

Hydraulic system for a vehicle including an auxiliary hydraulic control circuit

Info

Publication number
GB1522014A
GB1522014A GB3708575A GB3708575A GB1522014A GB 1522014 A GB1522014 A GB 1522014A GB 3708575 A GB3708575 A GB 3708575A GB 3708575 A GB3708575 A GB 3708575A GB 1522014 A GB1522014 A GB 1522014A
Authority
GB
United Kingdom
Prior art keywords
valve
steering
control circuit
coupler
pressure
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
GB3708575A
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB1522014A publication Critical patent/GB1522014A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • 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
    • B62D5/07—Supply of pressurised fluid for steering also supplying other consumers ; control thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Vehicle Body Suspensions (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1522014 Vehicle steering systems CATERPILLAR TRACTOR CO 9 Sept 1975 [1 Oct 1974] 37085/75 Heading B7H An earthmoving vehicle has hydraulic circuitry for controlling steering, braking and an implement coupling device. A pump 11 supplies an open centre steering control valve 24 via a flow control and pressure relief valve 13 and output from the steering valve 24 is connected to both a brake control circuit 14 and the implement coupler control circuit 15. The brake control circuit is of the open centre type and is provided with a pressure limiting valve 40. The coupler circuit includes a manually operated valve 34 controlling the locking cylinders 35, 36 of the coupler and a velocity fuse 32 and orifice 33 for limiting the flow rate to the valve. The pump delivers fluid at about 2,500 p.s.i. to the valve 13 where it passes via bores 17, 19 and conduit 22 to the steering valve. Should the flow rate exceed 11 g.p.m. the body defining bores 17, 19 moves against spring 21 and fluid spills back to reservoir. If the pressure rises above 2,500 p.s.i. a relief valve 41 opens and fluid is returned to reservoir via line 42. The pressure relief valve 40 of the brake control circuit opens at about 300 p.s.i. thus allowing the steering and braking circuits to be used simultaneously. Fluid exhausted from the steering cylinders is at about 10-15 p.s.i. if the brake system is inoperative and this pressure is insufficient to operate the coupling cylinders 35, 36. Only after the pressure increase caused by operation of the brakes may the coupler be operated, flow to the coupler valve 34 being stopped above 3 g.p.m. by the velocity fuse 32 being restricted to 2 g.p.m. by the orifice 33.
GB3708575A 1974-10-01 1975-09-09 Hydraulic system for a vehicle including an auxiliary hydraulic control circuit Expired GB1522014A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51107374A 1974-10-01 1974-10-01

Publications (1)

Publication Number Publication Date
GB1522014A true GB1522014A (en) 1978-08-23

Family

ID=24033359

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3708575A Expired GB1522014A (en) 1974-10-01 1975-09-09 Hydraulic system for a vehicle including an auxiliary hydraulic control circuit

Country Status (2)

Country Link
JP (1) JPS5157382A (en)
GB (1) GB1522014A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447843A1 (en) * 1979-01-30 1980-08-29 Nissan Motor HYDRAULIC SYSTEM FOR MOTOR VEHICLE
FR2513949A1 (en) * 1981-10-07 1983-04-08 Linde Ag Vehicle with two hydraulic pumps of different capacity - has large capacity pump connected to large user unit and small pump to steering support system and to low usage consumer unit
US5946911A (en) * 1997-01-07 1999-09-07 Valeo Electrical Systems, Inc. Fluid control system for powering vehicle accessories
US5960628A (en) * 1995-03-09 1999-10-05 Valeo Electrical Systems, Inc. Hydraulically powered fan and power steering in vehicle
US6016657A (en) * 1995-03-09 2000-01-25 Valeo Electrical Systems, Inc. Automotive hydraulic system and method
US6021641A (en) * 1995-03-09 2000-02-08 Buschur; Jeffrey J. Hydraulically powered fan system for vehicles
US6629411B2 (en) 2001-05-09 2003-10-07 Valeo Electrical Systems, Inc. Dual displacement motor control
CN102837735A (en) * 2012-07-27 2012-12-26 浙江万安科技股份有限公司 Novel car chassis hydraulic active control system
CN109026867A (en) * 2018-09-25 2018-12-18 杭叉集团股份有限公司 The energy-saving hydraulic system of large-tonnage storage battery forktruck

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447843A1 (en) * 1979-01-30 1980-08-29 Nissan Motor HYDRAULIC SYSTEM FOR MOTOR VEHICLE
FR2513949A1 (en) * 1981-10-07 1983-04-08 Linde Ag Vehicle with two hydraulic pumps of different capacity - has large capacity pump connected to large user unit and small pump to steering support system and to low usage consumer unit
US5960628A (en) * 1995-03-09 1999-10-05 Valeo Electrical Systems, Inc. Hydraulically powered fan and power steering in vehicle
US6016657A (en) * 1995-03-09 2000-01-25 Valeo Electrical Systems, Inc. Automotive hydraulic system and method
US6021641A (en) * 1995-03-09 2000-02-08 Buschur; Jeffrey J. Hydraulically powered fan system for vehicles
US6158216A (en) * 1995-03-09 2000-12-12 Valeo Electrical Systems, Inc. Hydraulically powered fan system for vehicles
US5946911A (en) * 1997-01-07 1999-09-07 Valeo Electrical Systems, Inc. Fluid control system for powering vehicle accessories
US6629411B2 (en) 2001-05-09 2003-10-07 Valeo Electrical Systems, Inc. Dual displacement motor control
CN102837735A (en) * 2012-07-27 2012-12-26 浙江万安科技股份有限公司 Novel car chassis hydraulic active control system
CN102837735B (en) * 2012-07-27 2014-02-05 浙江万安科技股份有限公司 Car chassis hydraulic active control system
CN109026867A (en) * 2018-09-25 2018-12-18 杭叉集团股份有限公司 The energy-saving hydraulic system of large-tonnage storage battery forktruck

Also Published As

Publication number Publication date
JPS5157382A (en) 1976-05-19

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Legal Events

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