GB1110873A - Improvements in and relating to fluid pressure braking systems for vehicles - Google Patents

Improvements in and relating to fluid pressure braking systems for vehicles

Info

Publication number
GB1110873A
GB1110873A GB2934864A GB2934864A GB1110873A GB 1110873 A GB1110873 A GB 1110873A GB 2934864 A GB2934864 A GB 2934864A GB 2934864 A GB2934864 A GB 2934864A GB 1110873 A GB1110873 A GB 1110873A
Authority
GB
United Kingdom
Prior art keywords
valve
brakes
line
master cylinder
air
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
GB2934864A
Inventor
Leslie Cyril Chouings
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.)
Automotive Products PLC
Original Assignee
Automotive Products PLC
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 Automotive Products PLC filed Critical Automotive Products PLC
Priority to GB2934864A priority Critical patent/GB1110873A/en
Priority to GB4709967A priority patent/GB1148271A/en
Publication of GB1110873A publication Critical patent/GB1110873A/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
    • B60T13/58—Combined or convertible systems
    • B60T13/581—Combined or convertible systems both hydraulic and pneumatic
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/20—Tandem, side-by-side, or other multiple master cylinder units
    • B60T11/203—Side-by-side configuration
    • 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
    • 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
    • B60T13/241—Differential pressure systems
    • B60T13/242—The control valve is provided as one unit with the servomotor cylinder
    • B60T13/245—Hydraulic command of the control valve, hydraulic transmission to the brake

Abstract

1,110,873. Braking system. AUTOMOTIVE PRODUCTS CO. Ltd. 19 July, 1965, [17 July, 1964], No. 29348/64. Heading F2E and F2F. A fluid pressure braking system for vehicles comprises hydraulically operated brakes 3 for one set or sets of wheels and pneumatically operated brakes for a further set 2 or sets of wheels, a pedal operated tandem master cylinder 6 having a primary chamber connected to the hydraulic circuit of the hydraulically operated brakes, an air pressure servo unit 15 for providing power assistance to the hydraulically operated brakes, first and second sources 19, 51 of compressed air connected to the pneumatic circuit of the pneumatically operated brakes and valve means 31, 32 jointly operable hydraulically by the master cylinder, operation of the first valve 31 resulting in actuation of the servodevice to provide power assistance to the hydraulic brake, operation of the second valve 32 connecting the air brakes to the second source. Fluid from the primary chamber 8 of the master cylinder 6 passes direct by line 29, 25, 26 to the hydraulic brake cylinders 3, and by line 43 to the space 42 between a floating piston 38 and a piston 39 operating valve 31. The secondary chamber 11 is connected, by line 45 to a similar space 44 between the floating piston 38 and a piston 40 operating valve 32. Operation of the master cylinder results in the opening of both valves, the valve 31 then connecting lines 47, 48 to allow compressed air from primary reservoir 19 to operate the servomotor 15 to augment through line 25 the pressure to brake cylinders 3, and further connecting lines 47, 49 to supply the smaller chambers 46 of the tandem air brake cylinders 4, 5. The operation of valve 32 connects the line 53 of secondary reservoir 51 to line 54 leading to the larger chambers 56 of the cylinders 4, 5. Valve 32 is also operable, by a cable 59, from a hand brake 57, 58. The master cylinder has a common plug 14 for bleeding the primary and secondary circuits. The specification gives examples of the braking efficiencies available when certain sections of the system are rendered inoperative. In a modification (Fig. 2, not shown) the pistons 39, 40 are of different diameters. The application of the system to a tractor - trailer combination with hydraulic brakes and air brakes on the tractor, the trailer having air brakes, is described with reference to figures 3 and 4 (not shown).
GB2934864A 1964-07-17 1964-07-17 Improvements in and relating to fluid pressure braking systems for vehicles Expired GB1110873A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2934864A GB1110873A (en) 1964-07-17 1964-07-17 Improvements in and relating to fluid pressure braking systems for vehicles
GB4709967A GB1148271A (en) 1964-07-17 1967-10-16 Improvements in and relating to fluid pressure braking systems for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2934864A GB1110873A (en) 1964-07-17 1964-07-17 Improvements in and relating to fluid pressure braking systems for vehicles

Publications (1)

Publication Number Publication Date
GB1110873A true GB1110873A (en) 1968-04-24

Family

ID=10290117

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2934864A Expired GB1110873A (en) 1964-07-17 1964-07-17 Improvements in and relating to fluid pressure braking systems for vehicles
GB4709967A Expired GB1148271A (en) 1964-07-17 1967-10-16 Improvements in and relating to fluid pressure braking systems for vehicles

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4709967A Expired GB1148271A (en) 1964-07-17 1967-10-16 Improvements in and relating to fluid pressure braking systems for vehicles

Country Status (1)

Country Link
GB (2) GB1110873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213890A (en) * 1987-12-11 1989-08-23 Bendix Ltd Vehicle having compressed air and hydraulic operated brakes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1538451A (en) * 1975-10-09 1979-01-17 Bendix Westinghouse Ltd Valve apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213890A (en) * 1987-12-11 1989-08-23 Bendix Ltd Vehicle having compressed air and hydraulic operated brakes
GB2213890B (en) * 1987-12-11 1992-01-08 Bendix Ltd Motor vehicle with a compressed air pressure operable braking system

Also Published As

Publication number Publication date
GB1148271A (en) 1969-04-10

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