GB1227888A - - Google Patents

Info

Publication number
GB1227888A
GB1227888A GB1227888DA GB1227888A GB 1227888 A GB1227888 A GB 1227888A GB 1227888D A GB1227888D A GB 1227888DA GB 1227888 A GB1227888 A GB 1227888A
Authority
GB
United Kingdom
Prior art keywords
line
bore
regulator
brakes
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
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 filed Critical
Publication of GB1227888A publication Critical patent/GB1227888A/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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/28—Valves specially adapted therefor
    • B60T11/32—Automatic cut-off valves for defective pipes
    • B60T11/323—Automatic cut-off valves for defective pipes in hydraulic systems
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Regulating Braking Force (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)

Abstract

1,227,888. Fluid pressure control of brakes. GENERAL MOTORS CORP. 13 Nov., 1969 [3 Dec., 1968], No. 55615/69. Heading F2F. An hydraulic dual line brakes system for a motor-vehicle which includes a brake line pressure regulator 32 for regulating the pressure of hydraulic fluid applied to the rear wheel brakes during a brake application also includes a bypass device arranged in the system to by-pass the regulator 32, when there is a failure in the line not connected to the regulator, to permit operation of the rear brakes without regulation of line pressure. The by-pass device comprises a cylinder 62 housing dual pistons 61, 64 coupled together to define an annular chamber 63 between them and chambers 65, 65<SP>1</SP>, respectively. The regulator supply line 48 communicates with chamber 65<SP>1</SP> through a bore 69 and the front wheel brake line 46 communicates with chamber 65 through a bore 68, the regulator 32 being connected with the interior of cylinder 62 through a line 60 and bore 71 and an output line 59 to the rear brakes communicates with the interior of cylinder 62 through a bore 70. Compression springs 72 located in chambers 65, 65<SP>1</SP> serve to centre the pistons and during normal braking substantially equal pressures generated in master cylinder chambers 18, 18<SP>1</SP> are transmitted to chambers 65, 65<SP>1</SP> to maintain the mid position and connect the rear brakes to pressure via the regulator. Failure of pressure in the front wheel brake circuit however moves the pistons to cover bore 71 and allow fluid pressure to be transmitted from line 48 via bore 69 and bore 70 direct to the rear brakes. Failure of either circuit causes pistons 61, 64 to be moved to operate a contact 80 and energize a warning light.
GB1227888D 1968-12-03 1969-11-13 Expired GB1227888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681812284 DE1812284B1 (en) 1968-12-03 1968-12-03 Hydraulic brake system, especially for motor vehicles

Publications (1)

Publication Number Publication Date
GB1227888A true GB1227888A (en) 1971-04-07

Family

ID=5715016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1227888D Expired GB1227888A (en) 1968-12-03 1969-11-13

Country Status (3)

Country Link
DE (1) DE1812284B1 (en)
FR (1) FR2025075A1 (en)
GB (1) GB1227888A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3816110A1 (en) * 1988-05-11 1989-11-23 Teves Gmbh Alfred Filling stage for a brake master cylinder
FR2772328B1 (en) * 1997-12-11 2000-03-17 Thierry Christian Yves Amalvy BRAKE PRESSURE MODULATION SYSTEM FOR TWO-WHEELED VEHICLES COMPRISING A HYDRAULIC BRAKE SYSTEM, TO PREVENT WHEEL LOCKING

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB790037A (en) * 1955-02-11 1958-01-29 Lindsay Ian Hamilton Grant Master cylinder arrangements for vehicle hydraulic brake systems
FR1542995A (en) * 1966-10-24 1968-10-18 Bendix Corp Imbalance indicator for braking device with two independent circuits

Also Published As

Publication number Publication date
FR2025075A1 (en) 1970-09-04
DE1812284B1 (en) 1970-09-16

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Legal Events

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