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GB946921A - Improvements in braking systems for vehicles - Google Patents

Improvements in braking systems for vehicles

Info

Publication number
GB946921A
GB946921A GB455160A GB455160A GB946921A GB 946921 A GB946921 A GB 946921A GB 455160 A GB455160 A GB 455160A GB 455160 A GB455160 A GB 455160A GB 946921 A GB946921 A GB 946921A
Authority
GB
United Kingdom
Prior art keywords
link
pedal
valve
brakes
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.)
Expired
Application number
GB455160A
Inventor
Derek Coulson
Brian Roger Shilton
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce 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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB455160A priority Critical patent/GB946921A/en
Priority to FR850886A priority patent/FR1277947A/en
Publication of GB946921A publication Critical patent/GB946921A/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
    • B60T13/12—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 liquid
    • B60T13/16—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 liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
    • 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
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1812—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)

Abstract

946,921. Vehicle brakes. ROLLS-ROYCE Ltd. Jan. 3, 1961 [Feb. 9, 1960], No. 4551/60. Heading F2F. In a vehicle braking system, the braking torque on the front wheels is increased in relation to that on the rear wheels in proportion to the load transfer on deceleration. A brake pedal 1 is fulcrumed about a point 3 to raise a link 5 having a lost motion connection 5a with a link 6 pivoted at 7a to a beam 7 contacting rollers of two piston valves 16, 17. The end of the link 6 remote from the beam is connected to the pedal 1 through a link 8 and a " feel " spring 12. The valves 16, 17 control the pressure of brake fluid through the front, 22, and rear, 23, brakes respectively; a continuous flow being maintained from reservoirs 20, 21 by pumps 18, 19 through brake cylinders 22a, 23a, chambers 26, 27, passages 29, 30, chambers 31, 32 to the reservoirs 20, 21. Light actuation of the pedal 1 causes slight compression of the "feel" spring 12 and movement of the link 6 in the direction of the arrow to move the valves 16, 17 and cause their pistons 35, 36 to throttle the passages 29, 30 and produce a pressure rise in the system to apply the brakes. As the pedal movement is small, the lost motion slot 5a allows the link 5 to rise without changing the position of the beam 7. Heavier brake application requiring greater pedal movement causes the link 5 to raise the link 6 and beam 7 to increase the travel of the valve 16 in relation to the valve 17 to provide increased braking on the front wheels proportional to the load transfer produced by such braking. In a modification, the front brakes are actuated both by cylinders in the circuit of the valve 16 and extra cylinders in the circuit of the valve 17.
GB455160A 1960-02-09 1960-02-09 Improvements in braking systems for vehicles Expired GB946921A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB455160A GB946921A (en) 1960-02-09 1960-02-09 Improvements in braking systems for vehicles
FR850886A FR1277947A (en) 1960-02-09 1961-01-26 Improvements to vehicle braking systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB455160A GB946921A (en) 1960-02-09 1960-02-09 Improvements in braking systems for vehicles

Publications (1)

Publication Number Publication Date
GB946921A true GB946921A (en) 1964-01-15

Family

ID=9779300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB455160A Expired GB946921A (en) 1960-02-09 1960-02-09 Improvements in braking systems for vehicles

Country Status (1)

Country Link
GB (1) GB946921A (en)

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