GB1148271A - 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
GB1148271A
GB1148271A GB4709967A GB4709967A GB1148271A GB 1148271 A GB1148271 A GB 1148271A GB 4709967 A GB4709967 A GB 4709967A GB 4709967 A GB4709967 A GB 4709967A GB 1148271 A GB1148271 A GB 1148271A
Authority
GB
United Kingdom
Prior art keywords
valves
master cylinder
pressure
brakes
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
GB4709967A
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
Publication of GB1148271A publication Critical patent/GB1148271A/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

Landscapes

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

Abstract

1,148,271. Brake systems; brake indicators. AUTOMOTIVE PRODUCTS CO. Ltd. 16 Oct., 1967, No. 47099/67. Addition to 1,110,873. Headings F2E and F2F. A vehicle braking system, Fig. 1, comprises: hydraulically operated brakes for one set of wheels 1; pneumatically operated brakes for another set of wheels 2; a single master cylinder 11 operated by a pedal; an air pressure servounit 13 for the hydraulic brakes; and valves 12 actuated by the master cylinder for connecting two pressure sources 25, 26 to the servo-unit 13 and the pneumatic brakes 2. The servo-unit 13 has an hydraulic fluid inlet 37 coupled to the master cylinder 11, and fluid pressure is transmitted to two outlets 39, 43 by a stepped piston 32. The two outlets may operate on single brake cylinders 3 or on separate cylinders (84, 85), Figs. 3, 4 (not shown). The pressure on the two outlet lines is equalized by a compensator 50, which also actuates an indicator, via switch 59, if pressure in one or other of the lines 40, 44 fails. Servo assistance is provided by a double diaphragm unit having two chambers 17, 18 connected via the valves 12 to the air reservoirs 25, 26. The diaphragms may be replaced by pistons, Figs. 2, 4 (not shown). In one form of master cylinder, Fig. 5, the two valves units 12 are mounted side-by-side and comprise valves 139 which normally engage fixed seatings 141. Actuation of the master cylinder piston 119 hydraulically actuates pistons 136 to close seatings 138 on to the valves 139 and thus move them away from the fixed seatings 141. In the event of failure of the hydraulic action of piston 119 the valves are mechanically actuated via member 143. The valves may also be actuated by the hand brake via rods 147. In an alternative arrangement, the valve units 12 are mounted in tandem, Figs. 2, 4 (not shown).
GB4709967A 1964-07-17 1967-10-16 Improvements in and relating to fluid pressure braking systems for vehicles Expired GB1148271A (en)

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
GB1148271A true GB1148271A (en) 1969-04-10

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 Before (1)

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

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
FR2327124A1 (en) * 1975-10-09 1977-05-06 Bendix Westinghouse Ltd MULTI-CIRCUIT CONTROL VALVES DISTRIBUTOR FOR VEHICLE BRAKING SYSTEMS

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8729049D0 (en) * 1987-12-11 1988-01-27 Bendix Ltd Vehicle with fluid pressure operable braking system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327124A1 (en) * 1975-10-09 1977-05-06 Bendix Westinghouse Ltd MULTI-CIRCUIT CONTROL VALVES DISTRIBUTOR FOR VEHICLE BRAKING SYSTEMS

Also Published As

Publication number Publication date
GB1110873A (en) 1968-04-24

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