FR2339517A1 - Brake pressure control valve for vehicles - has pressure reducing valve connected mechanically to compensating piston - Google Patents

Brake pressure control valve for vehicles - has pressure reducing valve connected mechanically to compensating piston

Info

Publication number
FR2339517A1
FR2339517A1 FR7602103A FR7602103A FR2339517A1 FR 2339517 A1 FR2339517 A1 FR 2339517A1 FR 7602103 A FR7602103 A FR 7602103A FR 7602103 A FR7602103 A FR 7602103A FR 2339517 A1 FR2339517 A1 FR 2339517A1
Authority
FR
France
Prior art keywords
vehicles
control valve
reducing valve
pressure reducing
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.)
Granted
Application number
FR7602103A
Other languages
French (fr)
Other versions
FR2339517B1 (en
Inventor
Jose Levy
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.)
Wabco Westinghouse SA
Original Assignee
Wabco Westinghouse 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
Application filed by Wabco Westinghouse SA filed Critical Wabco Westinghouse SA
Priority to FR7602103A priority Critical patent/FR2339517A1/en
Priority to DE19772702573 priority patent/DE2702573C2/en
Publication of FR2339517A1 publication Critical patent/FR2339517A1/en
Application granted granted Critical
Publication of FR2339517B1 publication Critical patent/FR2339517B1/fr
Granted 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
    • B60T8/26—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
    • B60T8/262—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 using valves with stepped characteristics
    • B60T8/263—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 using valves with stepped characteristics for pneumatic brake systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
  • Regulating Braking Force (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

The brake control valve can be used on vehicles with brakes fitted to one or to several axles. The system includes a compensator to allow for changes in vehicle load and the control valve incorporates a pressure reducing valve. The particular feature is that the pressure reducing valve operating element is connected mechanically to a compensating piston. This is subject to the compensating pressure applied during brake operation, which allows for the difference in load on different axles. The mechanical connection is a ram with a central ventilating borehole. The piston has a return spring which operates in the same direction as the control pressure and therefore against the brake pressure. The design is extended for use with articulated vehicles.
FR7602103A 1976-01-27 1976-01-27 Brake pressure control valve for vehicles - has pressure reducing valve connected mechanically to compensating piston Granted FR2339517A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7602103A FR2339517A1 (en) 1976-01-27 1976-01-27 Brake pressure control valve for vehicles - has pressure reducing valve connected mechanically to compensating piston
DE19772702573 DE2702573C2 (en) 1976-01-27 1977-01-22 Hydraulic dual-circuit brake system for motor vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7602103A FR2339517A1 (en) 1976-01-27 1976-01-27 Brake pressure control valve for vehicles - has pressure reducing valve connected mechanically to compensating piston

Publications (2)

Publication Number Publication Date
FR2339517A1 true FR2339517A1 (en) 1977-08-26
FR2339517B1 FR2339517B1 (en) 1978-11-03

Family

ID=9168408

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7602103A Granted FR2339517A1 (en) 1976-01-27 1976-01-27 Brake pressure control valve for vehicles - has pressure reducing valve connected mechanically to compensating piston

Country Status (2)

Country Link
DE (1) DE2702573C2 (en)
FR (1) FR2339517A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988008799A1 (en) * 1987-05-04 1988-11-17 Allied Corporation Proportioning control valve
WO1989002381A1 (en) * 1987-09-11 1989-03-23 Allied-Signal Inc. Proportioning control valve with spring biased control piston
WO1990002675A1 (en) * 1988-09-09 1990-03-22 Saab-Scania Aktiebolag Method and arrangement for brake adaptation between a haulage vehicle and an attached semitrailer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368926A (en) * 1980-09-29 1983-01-18 The Bendix Corporation Brake proportioning system
AU579420B2 (en) * 1984-10-17 1988-11-24 Vbg Produkter Ab Apparatus for matching the brake pressure of vehicle combinations to the actual load

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1270429B (en) * 1961-11-16 1968-06-12 Westinghouse Bremsen Apparate Pneumatic braking device for vehicles, especially for road vehicles
JPS5228194B2 (en) * 1973-12-06 1977-07-25

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988008799A1 (en) * 1987-05-04 1988-11-17 Allied Corporation Proportioning control valve
WO1989002381A1 (en) * 1987-09-11 1989-03-23 Allied-Signal Inc. Proportioning control valve with spring biased control piston
WO1990002675A1 (en) * 1988-09-09 1990-03-22 Saab-Scania Aktiebolag Method and arrangement for brake adaptation between a haulage vehicle and an attached semitrailer
US5141292A (en) * 1988-09-09 1992-08-25 Saab-Scania Aktiebolag Method and arrangement for brake adaptation between a haulage vehicle and an attached semitrailer

Also Published As

Publication number Publication date
DE2702573C2 (en) 1984-01-19
DE2702573A1 (en) 1977-07-28
FR2339517B1 (en) 1978-11-03

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Legal Events

Date Code Title Description
ST Notification of lapse