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GB2017241A - Vehicle Braking Systems - Google Patents

Vehicle Braking Systems

Info

Publication number
GB2017241A
GB2017241A GB7909011A GB7909011A GB2017241A GB 2017241 A GB2017241 A GB 2017241A GB 7909011 A GB7909011 A GB 7909011A GB 7909011 A GB7909011 A GB 7909011A GB 2017241 A GB2017241 A GB 2017241A
Authority
GB
United Kingdom
Prior art keywords
service
circuit
spring brake
relay valves
service braking
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
GB7909011A
Other versions
GB2017241B (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.)
Wabco Automotive UK Ltd
Original Assignee
Clayton Dewandre Co Ltd
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 Clayton Dewandre Co Ltd filed Critical Clayton Dewandre Co Ltd
Priority to GB7909011A priority Critical patent/GB2017241B/en
Publication of GB2017241A publication Critical patent/GB2017241A/en
Application granted granted Critical
Publication of GB2017241B publication Critical patent/GB2017241B/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
    • B60T8/26—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
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring

Landscapes

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

Abstract

A vehicle braking system has two circuits 4a, 5a for air-actuated service brake units and two circuits 12, 12a for spring brake units for parking. The system includes relay valves 13 13a operable upon failure of the service braking in either circuit 4a, 5a and responsive to the service pressure in the other circuit to provide a graduated actuation of the spring brake units in the circuit where service braking has failed. The relay valves are operated by a control piston assembly 19, 19a which is normally kept in a central position by the balanced service braking pressures on each side, but which on failure of one service braking pressure moves to open one of the relay valves 13, 13a to vent the corresponding spring brake past valve seat 18 or 18a, and through openings in the stem 22 or 22a to the vent 21. <IMAGE>
GB7909011A 1978-03-22 1979-03-14 Vehicle braking system Expired GB2017241B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7909011A GB2017241B (en) 1978-03-22 1979-03-14 Vehicle braking system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1139878 1978-03-22
GB7909011A GB2017241B (en) 1978-03-22 1979-03-14 Vehicle braking system

Publications (2)

Publication Number Publication Date
GB2017241A true GB2017241A (en) 1979-10-03
GB2017241B GB2017241B (en) 1982-03-24

Family

ID=26248252

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909011A Expired GB2017241B (en) 1978-03-22 1979-03-14 Vehicle braking system

Country Status (1)

Country Link
GB (1) GB2017241B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050536A1 (en) * 1980-09-29 1982-04-28 The Bendix Corporation Fluid pressure braking system for an articulated vehicle
EP0171281A2 (en) * 1984-08-07 1986-02-12 John M. Graham Emergency and parking air supply system for air brakes
WO1990006876A1 (en) * 1988-12-20 1990-06-28 Graham John M Improved fluid actuated brake system
US5361877A (en) * 1993-07-07 1994-11-08 Graham John M Diaphragm-type pneumatic brake actuator with closing valve
WO2003097421A1 (en) * 2002-05-16 2003-11-27 Daimlerchrysler Ag Vehicle brake system comprising a service brake system and a parking brake system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050536A1 (en) * 1980-09-29 1982-04-28 The Bendix Corporation Fluid pressure braking system for an articulated vehicle
EP0171281A2 (en) * 1984-08-07 1986-02-12 John M. Graham Emergency and parking air supply system for air brakes
EP0171281A3 (en) * 1984-08-07 1987-04-15 John M. Graham Emergency and parking air supply system for air brakes
WO1990006876A1 (en) * 1988-12-20 1990-06-28 Graham John M Improved fluid actuated brake system
US5361877A (en) * 1993-07-07 1994-11-08 Graham John M Diaphragm-type pneumatic brake actuator with closing valve
WO2003097421A1 (en) * 2002-05-16 2003-11-27 Daimlerchrysler Ag Vehicle brake system comprising a service brake system and a parking brake system

Also Published As

Publication number Publication date
GB2017241B (en) 1982-03-24

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19990313