GB1158673A - Improvements in Vehicle Brake Systems - Google Patents

Improvements in Vehicle Brake Systems

Info

Publication number
GB1158673A
GB1158673A GB171167A GB171167A GB1158673A GB 1158673 A GB1158673 A GB 1158673A GB 171167 A GB171167 A GB 171167A GB 171167 A GB171167 A GB 171167A GB 1158673 A GB1158673 A GB 1158673A
Authority
GB
United Kingdom
Prior art keywords
line
trailer
brake
valve
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.)
Expired
Application number
GB171167A
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 GB1158673A publication Critical patent/GB1158673A/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
    • 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
    • B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
    • B60T15/20—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere controlled by two fluid pressures
    • 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
    • B60T13/261—Compressed-air systems systems with both indirect application and application by springs or weights and released by compressed air
    • B60T13/263—Compressed-air systems systems with both indirect application and application by springs or weights and released by compressed air specially adapted for coupling with dependent systems, e.g. tractor-trailer systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)
  • Regulating Braking Force (AREA)

Abstract

1,158,673. Tractor/trailer braking system. ROBERT BOSCH G.m.b.H. 12 Jan., 1967 [14 Jan., 1966], No. 1711/67. Addition to 1,134,032. Heading F2F. A pneumatic two line brake system for the tractor vehicle of a lorry train whose trailer has its own reservoir and trailer brake valve, comprises a first brake circuit 11, 15 for applying the tractor vehicle brakes, a second circuit 23, 25 including a trailer brake line 25 leading to a trailer brake coupling head 30, a trailer reservoir feed line 26 leading to a trailer reservoir coupling head 37, a multi-circuit main brake valve 9 with a common actuator operating the first and second brake circuits simultaneously, an auxiliary brake valve 29 for causing application of tractor brakes by a storage spring actuator 18, 19 having a releasing cylinder therefore, and a valve assembly 20 having a stop valve 33 in the trailer brake line, a relay valve 34 controlling a line to the storage spring cylinder responsively to operation of the auxiliary brake valve and having a control element 55 provided with means 68 normally subjected at opposite sides to the pressure in the trailer brake line 25 and in the first brake circuit respectively, and an emergency brake valve 35 connecting the trailer reservoir feed line 26 to the trailer brake line 25 when the stop valve is closed, and a lever 36 interconnecting the control element of the relay valve and the actuating element of the emergency brake valve to render operation of these valves interdependent. Operation.-When the brake system is without pressure compressed air passes from reservoirs 4, 5, through line 22 to reserve air chamber 65 to raise relay valve 34, and through chamber 63, line 76, 75, 82 to trailer reservoir feed line 26. Air flows past the opened relay valve to line 21 to release the storage spring brakes and also acts in piston 64, the differential pressure due to the shoulder 57 causing the element 55 to move down when the required trailer reservoir pressure is reached and thus seat valve 61. On application of foot valve 9 pressure in line 11 actuates the tractor brakes and through line 23 and chambers 43, 41 to the trailer brake line 25 to brake the trailer. Pressure below piston 68 of the relay valve, supplied through conduit 24 from line 11, is balanced by the trailer brake line pressure reaching the top of the piston 68 by passages 84, 83, 86, 79, 70. If the hand brake 29 is operated, without foot brake actuation, air flows from line 28 to move piston 46 and its stop valve downwards, the lever 39 lifting the valve 35 to raise valve disc 77 off its seat 80. Relay valve 34 is moved downwards allowing air in line 21 to escape to atmosphere and actuates the storage spring brakes. The lowered valve 38 cuts off communication between lines 25 and 23 and air flows from line 22 (tractor reservoir) past partly open seats 80, 81 to space 83 and passage 84 to the trailer brake line 25 to brake the trailer, the valve disc 77 then engaging the seat 80 to shut off line 22 from the trailer. If feed line 22, 26 is fractured the trailer is automatically braked by the trailer brake valve. If trailer brake relay line 23 leaks then chamber 69 does not receive pressure on braking. Tractor brake pressure from line 24 acts in chamber 71 to raise, via lever 36, the rod 39 and tube 85 of the stop and emergency valves 33, 35, the latter shutting off the trailer reservoir feed line by seat 81 and connecting lines 26, 25 to apply the trailer brakes. If line 25 breaks, on application of the foot-brake pressure fails to build up in chamber 69 and air pressure in chamber 71 of valve 34 raises the element 55 together, by lever 36, with element 85 of the valve 35. Valve disc 77 then abuts seat 81, connecting the trailer feed line with the fractured line 25 and the trailer brake valve operates as before to apply the trailer brakes. The lever also raises the stop valve 33 to cut off connection between lines 23 and 25 to protect the tractor braking circuit. The throttle 78 in the emergency brake valve 35 prevents build up of pressure above piston 87.
GB171167A 1964-11-27 1967-01-12 Improvements in Vehicle Brake Systems Expired GB1158673A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEB0079517 1964-11-27
DE1966B0085404 DE1505523A1 (en) 1964-11-27 1966-01-14 Compressed air dual line braking device

Publications (1)

Publication Number Publication Date
GB1158673A true GB1158673A (en) 1969-07-16

Family

ID=25967328

Family Applications (2)

Application Number Title Priority Date Filing Date
GB5056965A Expired GB1134032A (en) 1964-11-27 1965-11-29 Improvements in vehicle brake systems
GB171167A Expired GB1158673A (en) 1964-11-27 1967-01-12 Improvements in Vehicle Brake Systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB5056965A Expired GB1134032A (en) 1964-11-27 1965-11-29 Improvements in vehicle brake systems

Country Status (3)

Country Link
DE (2) DE1505523A1 (en)
FR (2) FR1457051A (en)
GB (2) GB1134032A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2399608A (en) * 2003-03-15 2004-09-22 Terence William Bland System for controlling the air brakes of a towed vehicle

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2437027A1 (en) * 1974-08-01 1976-02-19 Wabco Westinghouse Gmbh TWO-LINE, TWIN-CIRCUIT BRAKE SYSTEM, THROTTLE SHIFT
GB1578752A (en) * 1976-02-28 1980-11-12 Bendix Corp Vehicle braking apparatus
US4121873A (en) * 1976-11-03 1978-10-24 Midland-Ross Corporation Vehicle air brake system with emergency features
DE2820921A1 (en) * 1978-05-12 1979-11-15 Knorr Bremse Gmbh BRAKE DEVICE FOR VEHICLES
DE3249840C2 (en) * 1981-04-06 1991-04-11 Fleck, Oskar, 4354 Datteln, De
DE3210017A1 (en) 1981-04-06 1982-11-04 Fleck, Oskar, 4354 Datteln Opening reinforcement connected to a flexible sheet
DE3224397C2 (en) * 1982-06-30 1986-04-10 Graubremse Gmbh, 6900 Heidelberg Overload protection relay valve for combined service and spring brake systems for vehicles, in particular road vehicles
DE3521446A1 (en) * 1985-06-14 1986-12-18 Knorr-Bremse AG, 8000 München CIRCUIT ARRANGEMENT FOR DETECTING A LINE BREAK IN AN ELECTRO-PNEUMATIC VEHICLE BRAKING SYSTEM WITH TRAILER CONTROLLED BY THE TOWING VEHICLE
DE10233018A1 (en) † 2002-07-20 2004-01-29 Iveco Magirus Ag Method and braking device for parking braking of vehicles, in particular trucks
DE102006041012A1 (en) 2006-08-31 2008-03-06 Wabco Gmbh Valve unit, brake control device, vehicle brake system and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2399608A (en) * 2003-03-15 2004-09-22 Terence William Bland System for controlling the air brakes of a towed vehicle
GB2399608B (en) * 2003-03-15 2005-07-20 Terence William Bland System for controlling the air brakes of a towed vehicle

Also Published As

Publication number Publication date
FR1457051A (en) 1966-10-28
GB1134032A (en) 1968-11-20
DE1287956B (en)
DE1505523A1 (en) 1969-10-30
FR91598E (en) 1968-07-05

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Legal Events

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