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GB1272979A - Motor vehicle compressed air brake system - Google Patents

Motor vehicle compressed air brake system

Info

Publication number
GB1272979A
GB1272979A GB5939269A GB5939269A GB1272979A GB 1272979 A GB1272979 A GB 1272979A GB 5939269 A GB5939269 A GB 5939269A GB 5939269 A GB5939269 A GB 5939269A GB 1272979 A GB1272979 A GB 1272979A
Authority
GB
United Kingdom
Prior art keywords
circuit
valve
air
pressure
brake
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
GB5939269A
Inventor
Jean Gachot
Fernand Perales
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1272979A publication Critical patent/GB1272979A/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
    • B60T13/24—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 gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/36—Compressed-air systems direct, i.e. brakes applied directly by compressed air
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/04—Driver's valves
    • B60T15/043—Driver's valves controlling service pressure brakes
    • B60T15/045—Driver's valves controlling service pressure brakes in multiple circuit systems, e.g. dual circuit systems
    • B60T15/046—Driver's valves controlling service pressure brakes in multiple circuit systems, e.g. dual circuit systems with valves mounted in tandem

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

1,272,979. Motor vehicle compressed-air brake systems. J. GACHOT, and F. PERALES. 4 Dec., 1969 [4 Dec., 1968], No. 59392/69. Addition to 1,215,767. Heading F2F. A compressed air brake system for a motor vehicle which is an improvement in or modification of the system of parent Specification comprises a normal brake circuit 103 for the front wheels, a normal brake circuit 102 for the rear wheels, and an emergency brake circuit 104 for the rear wheels, first, second and third reservoirs 5, 6, 213 for supplying the normal brake circuits for the rear and front wheels and the emergency circuit 102, 103, 104 respectively, a brake unit 101 including a master piston 46 arranged when displaced to a first position to open a first valve 34 through which air passes from the reservoir 5 to the circuit 102 and when displaced to a second position to open a second valve 35 through which air passes from the reservoir 6 to the circuit 103, a third valve 234 being provided to admit air from the third reservoir 213 to the emergency brake circuit 104 when the pressure difference between the output sides of the second and first valves exceeds a predetermined value indicative of a loss of pressure in the normal rear wheel circuit 102. As shown, the valve 234 is part of a differential compressed air relay in a head 232 which relay further comprises a piston 233 associated with a resilient diaphragm 227, a chamber 85 on one side of the diaphragm 227 being connected with circuit 102 and a chamber 228 on the other side being connected with circuit 103. Valve 35 is operable by the pressure of circuit 102 but is also operable mechanically by means of an intermediate piston 114 in the event of a loss in pressure in circuit 102. Further in this event the diaphragm 227, will be bowed to the left by the excess pressure of circuit 103 as in Fig. 4 (not shown) which pressure will enter a conduit 217 and move the piston 233 to the right to open valve 234 and allow air to pass from reservoir 213 to circuit 104 via inlet aperture 237, duct 226, and outlet aperture 216. The piston 233 has a tubular extension 244 through which air can escape from the circuit 104 to chamber 84 via discharge valves 242 and 230 as in Fig. 5 (not shown).
GB5939269A 1967-11-08 1969-12-04 Motor vehicle compressed air brake system Expired GB1272979A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR127393 1967-11-08
FR176504 1968-12-04

Publications (1)

Publication Number Publication Date
GB1272979A true GB1272979A (en) 1972-05-03

Family

ID=26180599

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5939269A Expired GB1272979A (en) 1967-11-08 1969-12-04 Motor vehicle compressed air brake system

Country Status (3)

Country Link
DE (1) DE1961677A1 (en)
FR (1) FR96444E (en)
GB (1) GB1272979A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5395581A (en) * 1977-02-02 1978-08-21 Hitachi Ltd Manufacture for semiconductor device
DE102020108072A1 (en) * 2020-03-24 2021-09-30 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Electronically controlled service brake system with backup control pressure generated on the basis of another compressed air consumer circuit

Also Published As

Publication number Publication date
DE1961677A1 (en) 1970-06-18
FR96444E (en) 1972-06-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees