FR2388704A1 - DEVICE FOR ADJUSTING THE BRAKING PRESSURE ON A MOTOR VEHICLE ACCORDING TO ITS LOAD - Google Patents

DEVICE FOR ADJUSTING THE BRAKING PRESSURE ON A MOTOR VEHICLE ACCORDING TO ITS LOAD

Info

Publication number
FR2388704A1
FR2388704A1 FR7812751A FR7812751A FR2388704A1 FR 2388704 A1 FR2388704 A1 FR 2388704A1 FR 7812751 A FR7812751 A FR 7812751A FR 7812751 A FR7812751 A FR 7812751A FR 2388704 A1 FR2388704 A1 FR 2388704A1
Authority
FR
France
Prior art keywords
pressure
load
brake
adjusting
generator
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
FR7812751A
Other languages
French (fr)
Other versions
FR2388704B1 (en
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2388704A1 publication Critical patent/FR2388704A1/en
Application granted granted Critical
Publication of FR2388704B1 publication Critical patent/FR2388704B1/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
    • B60T8/18—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
    • B60T8/1825—Means for changing the diaphragm area submitted to pressure

Landscapes

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

Abstract

Un tel appareil est disposé entre un générateur de pression de freinage (robinet de frein) et un cyclindre de frein de roue, il est ajustable en fonction de la charge sur l'essieu correspondant et il laisse parvenir, suivant son ajustement, une partie plus ou moins grande de la pression du générateur à ce cylindre de frein. Selon l'invention, l'appareil établit un rapport de réglage (de réduction) qui est un produit de deux facteurs, dont l'un est fourni par un régulateur d'effort de freinage 5 ajustable en fonction de la charge et l'autre par une valve 6 à rapport de pression dont la caractéristique de commande est variable, l'agencement étant tel qu'une pression envoyée par la valve 6 au cylindre de frein 3 peut être réglée en fonction de la pression du générateur 1.Such a device is arranged between a brake pressure generator (brake valve) and a wheel brake cyclinder, it is adjustable according to the load on the corresponding axle and it allows, depending on its adjustment, a greater part. or less of the pressure from the generator to that brake cylinder. According to the invention, the apparatus establishes an adjustment (reduction) ratio which is a product of two factors, one of which is provided by a brake force regulator 5 adjustable according to the load and the other by a pressure ratio valve 6, the control characteristic of which is variable, the arrangement being such that a pressure sent by the valve 6 to the brake cylinder 3 can be adjusted as a function of the pressure of the generator 1.

FR7812751A 1977-04-29 1978-04-28 DEVICE FOR ADJUSTING THE BRAKING PRESSURE ON A MOTOR VEHICLE ACCORDING TO ITS LOAD Granted FR2388704A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772719109 DE2719109C2 (en) 1977-04-29 1977-04-29 Load-dependent brake pressure control device

Publications (2)

Publication Number Publication Date
FR2388704A1 true FR2388704A1 (en) 1978-11-24
FR2388704B1 FR2388704B1 (en) 1984-01-20

Family

ID=6007599

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812751A Granted FR2388704A1 (en) 1977-04-29 1978-04-28 DEVICE FOR ADJUSTING THE BRAKING PRESSURE ON A MOTOR VEHICLE ACCORDING TO ITS LOAD

Country Status (4)

Country Link
BR (1) BR7802697A (en)
DE (1) DE2719109C2 (en)
FR (1) FR2388704A1 (en)
GB (1) GB1599571A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433446A1 (en) * 1978-08-18 1980-03-14 Knorr Bremse Gmbh Compressed air brake system for road vehicle - has relay valve with stopped piston loaded by pressures from different sources
FR2511323A1 (en) * 1981-08-12 1983-02-18 Bosch Gmbh Robert EQUIPMENT WITH TWO BRAKING CIRCUITS ACCORDING TO THE LOAD
FR2550503A1 (en) * 1983-08-11 1985-02-15 Bosch Gmbh Robert Load regulated rear brake valve
EP0444281A1 (en) * 1990-02-28 1991-09-04 Volkswagen Aktiengesellschaft Brake pressure reducer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2849879C2 (en) * 1978-11-17 1985-03-14 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Load-dependent control of brake force regulators
DE2855295A1 (en) * 1978-12-21 1980-07-03 Wabco Fahrzeugbremsen Gmbh ADJUSTING DEVICE FOR MECHANICALLY CONTROLLED BRAKING REGULATORS
DE3112925A1 (en) * 1980-04-11 1982-03-18 Kelsey-Hayes Co., 48174 Romulus, Mich. HYDRAULIC BRAKE SYSTEM
DE3828313A1 (en) * 1988-08-20 1990-02-22 Wabco Westinghouse Fahrzeug Adjustment device for adjusting the braking force of a brake device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1077904A (en) * 1965-04-30 1967-08-02 Westinghouse Bremsen Und App B Load dependent braking apparatus
DE1934784A1 (en) * 1969-07-09 1971-02-04 Westinghouse Bremsen U Appbau Load-dependent brake force regulator
FR2350233A1 (en) * 1976-05-07 1977-12-02 Wabco Westinghouse Brake system pressure correction unit - has annular supplementary piston section forming chamber permanently connected to reducer outlet

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231584B (en) * 1961-11-04 1966-12-29 Westinghouse Bremsen Apparate Brake force regulators for vehicles, in particular motor vehicles
DE1270429B (en) * 1961-11-16 1968-06-12 Westinghouse Bremsen Apparate Pneumatic braking device for vehicles, especially for road vehicles
DE1283866B (en) * 1964-12-15 1968-11-28 Westinghouse Bremsen Und Appba Pressure transmission device, especially for load-dependent controlled railway compressed air brakes
DE1655766C3 (en) * 1967-02-16 1974-06-06 Wabco Westinghouse Gmbh, 3000 Hannover-Linden Brake force regulators for vehicle air brake systems, in particular for motor vehicles and trailers
DE1929891A1 (en) * 1969-06-12 1971-02-18 Plibrico Co Gmbh Refractory jacket for the ingot support - tubes in pusher or rocker-bar furnaces
DE2514484C3 (en) * 1975-04-03 1981-08-20 Daimler-Benz Ag, 7000 Stuttgart Load-dependent brake pressure regulator for a vehicle equipped with compressed air brakes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1077904A (en) * 1965-04-30 1967-08-02 Westinghouse Bremsen Und App B Load dependent braking apparatus
DE1934784A1 (en) * 1969-07-09 1971-02-04 Westinghouse Bremsen U Appbau Load-dependent brake force regulator
FR2350233A1 (en) * 1976-05-07 1977-12-02 Wabco Westinghouse Brake system pressure correction unit - has annular supplementary piston section forming chamber permanently connected to reducer outlet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433446A1 (en) * 1978-08-18 1980-03-14 Knorr Bremse Gmbh Compressed air brake system for road vehicle - has relay valve with stopped piston loaded by pressures from different sources
FR2511323A1 (en) * 1981-08-12 1983-02-18 Bosch Gmbh Robert EQUIPMENT WITH TWO BRAKING CIRCUITS ACCORDING TO THE LOAD
FR2550503A1 (en) * 1983-08-11 1985-02-15 Bosch Gmbh Robert Load regulated rear brake valve
EP0444281A1 (en) * 1990-02-28 1991-09-04 Volkswagen Aktiengesellschaft Brake pressure reducer

Also Published As

Publication number Publication date
FR2388704B1 (en) 1984-01-20
GB1599571A (en) 1981-10-07
BR7802697A (en) 1978-11-14
DE2719109B1 (en) 1978-11-02
DE2719109C2 (en) 1985-06-05

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