GB1531803A - Braking correction device - Google Patents

Braking correction device

Info

Publication number
GB1531803A
GB1531803A GB811876A GB811876A GB1531803A GB 1531803 A GB1531803 A GB 1531803A GB 811876 A GB811876 A GB 811876A GB 811876 A GB811876 A GB 811876A GB 1531803 A GB1531803 A GB 1531803A
Authority
GB
United Kingdom
Prior art keywords
piston
pressure
outlet
caused
movement
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
GB811876A
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.)
DBA SA
Original Assignee
DBA SA
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
Priority claimed from FR7510131A external-priority patent/FR2306107A1/en
Application filed by DBA SA filed Critical DBA SA
Publication of GB1531803A publication Critical patent/GB1531803A/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
    • 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
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1837—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the load-detecting arrangements
    • B60T8/185—Arrangements for detecting vehicle level
    • 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
    • B60T11/34—Pressure reducing or limiting valves
    • 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
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1812—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction
    • B60T8/1831—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction pressure reducing or limiting valves
    • 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)
  • Safety Valves (AREA)

Abstract

1531803 Dual proportioning or limiting valves SOC ANON DBA 1 March 1976 [1 April 1975 10 Oct 1975] 08118/76 Heading F2F A braking correction device comprises two correcting (proportioning or pressure limiting) valves each associated with respective circuits of a dual circuit braking system and each including a piston 16 or 18, inlet 28 or 30, outlet 32 or 34 and projection 48 or 50 of piston 16 or 18 contacting one face of a common rocker member 46, the other face of the rocker member contacting a diametrical surface of an incompressible elastomeric block 42 having the shape of a half body of revolution, the block 42 and rocker member 46 together being rotatable in a complementary cavity of a rigid element 40 about axis Z-Z<1>, the rigid element 40 being coupled to an input member 36 whose movement is subject to a return spring 58 but may also be associated with variation in vehicle loading. The device may also operate to compensate for slight pressure drop in one circuit caused by leakage or to initiate a substantial pressure increase in one circuit on failure of the other. Each valve comprises a part hollow piston 16 or 18 slidable in bore 12 or 14, the internal bore 20 or 22 housing a ball 21 or 23 biased on to a valve seat but normally raised from the valve seat by a projection of an abutment 24 or 26 to allow a restricted flow from inlet to outlet. Thus movement of either piston to the left as shown in Fig. 1 caused by rotation of rocker and block caused either by a pressure difference across the other piston or by increased pressure through input member 36 causes ball 21 or 23 to lift further from its seat allowing increased flow to increase outlet pressure but movement to the right shuts the valve.
GB811876A 1975-04-01 1976-03-01 Braking correction device Expired GB1531803A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7510131A FR2306107A1 (en) 1975-04-01 1975-04-01 Pressure modulator for dual circuit brakes - with floating cam to equalise modulation forces
FR7531048A FR2327125A2 (en) 1975-04-01 1975-10-10 MECHANICAL CONTROL AND DUAL BRAKE CORRECTOR USING SUCH A MECHANICAL CONTROL

Publications (1)

Publication Number Publication Date
GB1531803A true GB1531803A (en) 1978-11-08

Family

ID=26218808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB811876A Expired GB1531803A (en) 1975-04-01 1976-03-01 Braking correction device

Country Status (7)

Country Link
JP (1) JPS51121671A (en)
AR (1) AR207187A1 (en)
BR (1) BR7601903A (en)
FR (1) FR2327125A2 (en)
GB (1) GB1531803A (en)
IT (1) IT1058888B (en)
SE (1) SE419733B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460818A1 (en) * 1979-07-06 1981-01-30 Teves Gmbh Alfred TWIN PRESSURE REGULATOR FOR TWO BRAKING CIRCUITS
EP0053651A1 (en) * 1980-12-09 1982-06-16 Toyota Jidosha Kabushiki Kaisha Fluid pressure control valve for dual braking system

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2907515A1 (en) * 1979-02-26 1980-08-28 Teves Gmbh Alfred PRINT CONTROL UNIT
DE3009288A1 (en) * 1980-03-11 1981-09-17 Alfred Teves Gmbh, 6000 Frankfurt TWO-CIRCUIT PRESSURE REGULATOR
DE3002142A1 (en) * 1980-01-22 1981-08-27 Alfred Teves Gmbh, 6000 Frankfurt TWIN PRESSURE REGULATOR FOR HYDRAULIC BRAKE SYSTEMS
DE3002135A1 (en) * 1980-01-22 1981-08-27 Alfred Teves Gmbh, 6000 Frankfurt TWIN PRESSURE REGULATOR FOR HYDRAULIC BRAKING SYSTEMS
DE3004964A1 (en) * 1980-02-11 1981-08-20 Alfred Teves Gmbh, 6000 Frankfurt Pressure control for dual circuit brakes - has floating piston with limited travel to balance output pressures
DE3010513C2 (en) * 1980-03-19 1986-09-25 Alfred Teves Gmbh, 6000 Frankfurt Twin pressure regulator
DE3012765A1 (en) * 1980-04-02 1981-10-08 Alfred Teves Gmbh, 6000 Frankfurt TWO-CIRCUIT PRESSURE REGULATOR FOR HYDRAULIC BRAKE SYSTEMS
DE3017728A1 (en) * 1980-05-09 1981-11-12 Alfred Teves Gmbh, 6000 Frankfurt TWIN PRESSURE REGULATOR FOR HYDRAULIC BRAKE SYSTEMS
JPS58182864U (en) * 1982-05-31 1983-12-06 住友電気工業株式会社 Load transmission mechanism of load-responsive parallel pressure reducing valve
DE3315763A1 (en) * 1983-04-30 1984-10-31 Alfred Teves Gmbh, 6000 Frankfurt Brake pressure control unit for a dual-circuit vehicle brake system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460818A1 (en) * 1979-07-06 1981-01-30 Teves Gmbh Alfred TWIN PRESSURE REGULATOR FOR TWO BRAKING CIRCUITS
DE2927423A1 (en) * 1979-07-06 1981-02-12 Teves Gmbh Alfred TWO-CIRCUIT PRESSURE REGULATOR
EP0053651A1 (en) * 1980-12-09 1982-06-16 Toyota Jidosha Kabushiki Kaisha Fluid pressure control valve for dual braking system
US4401347A (en) * 1980-12-09 1983-08-30 Toyota Jidosha Kogyo Kabushiki Kaisha Fluid pressure control valve for dual braking system

Also Published As

Publication number Publication date
BR7601903A (en) 1976-10-05
JPS51121671A (en) 1976-10-25
FR2327125A2 (en) 1977-05-06
IT1058888B (en) 1982-05-10
SE419733B (en) 1981-08-24
AR207187A1 (en) 1976-09-15
FR2327125B2 (en) 1979-10-05
JPS5722772B2 (en) 1982-05-14
SE7602698L (en) 1976-10-02

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19960229