GB2010996A - Brake Control Valve Assembly - Google Patents

Brake Control Valve Assembly

Info

Publication number
GB2010996A
GB2010996A GB7846025A GB7846025A GB2010996A GB 2010996 A GB2010996 A GB 2010996A GB 7846025 A GB7846025 A GB 7846025A GB 7846025 A GB7846025 A GB 7846025A GB 2010996 A GB2010996 A GB 2010996A
Authority
GB
United Kingdom
Prior art keywords
control valve
valve assembly
brake control
valve
inertia
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
GB7846025A
Other versions
GB2010996B (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.)
Girling Ltd
Original Assignee
Girling 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 Girling Ltd filed Critical Girling Ltd
Publication of GB2010996A publication Critical patent/GB2010996A/en
Application granted granted Critical
Publication of GB2010996B publication Critical patent/GB2010996B/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
    • B60T8/32—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 a speed condition, e.g. acceleration or deceleration
    • B60T8/72—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 a speed condition, e.g. acceleration or deceleration responsive to a difference between a speed condition, e.g. deceleration, and a fixed reference
    • B60T8/74—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 a speed condition, e.g. acceleration or deceleration responsive to a difference between a speed condition, e.g. deceleration, and a fixed reference sensing a rate of change of velocity
    • 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
    • B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
    • B60T13/44—Compressed-air systems indirect, i.e. compressed air booster units indirect systems with two-chamber booster units
    • 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
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • 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
    • 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
    • B60T8/28—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 responsive to deceleration
    • B60T8/287—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 responsive to deceleration using pendulums
    • 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
    • B60T8/32—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 a speed condition, e.g. acceleration or deceleration
    • B60T8/34—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 a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/42—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 a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure, i.e. closed systems
    • B60T8/4208—Debooster systems
    • B60T8/4225—Debooster systems having a fluid actuated expansion unit
    • B60T8/4241—Debooster systems having a fluid actuated expansion unit pneumatically
    • 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
    • B60T8/32—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 a speed condition, e.g. acceleration or deceleration
    • B60T8/34—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 a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/42—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 a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure, i.e. closed systems
    • B60T8/4208—Debooster systems
    • B60T8/4225—Debooster systems having a fluid actuated expansion unit
    • B60T8/4241—Debooster systems having a fluid actuated expansion unit pneumatically
    • B60T8/425—Debooster systems having a fluid actuated expansion unit pneumatically using a vacuum

Landscapes

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

Abstract

A control valve assembly for a vehicle braking system comprises a proportioning valve 3 controlling communication between an inlet 1 and an outlet 2, and an inertia- responsive device 15 which is operable to reduce the outlet pressure after the valve 3 has closed. The inertia-responsive device is a pendulum 23 which acts on a valve 15 to operate a servomotor 12 to move a lever 9 to increase the volume of space 2A, thus reducing the pressure. <IMAGE>
GB7846025A 1977-11-25 1978-11-24 Control valve assembly Expired GB2010996B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4905177 1977-11-25
GB151378 1978-01-13

Publications (2)

Publication Number Publication Date
GB2010996A true GB2010996A (en) 1979-07-04
GB2010996B GB2010996B (en) 1982-04-07

Family

ID=26236791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7846025A Expired GB2010996B (en) 1977-11-25 1978-11-24 Control valve assembly

Country Status (6)

Country Link
JP (1) JPS5486131A (en)
BR (1) BR7807791A (en)
DE (1) DE2850962A1 (en)
FR (1) FR2409891A1 (en)
GB (1) GB2010996B (en)
IT (1) IT1106357B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3530210A1 (en) * 1984-08-24 1986-03-06 Sumitomo Electric Industries, Ltd., Osaka BRAKE PRESSURE CONTROL VALVE ARRANGEMENT
US4688859A (en) * 1984-07-27 1987-08-25 Sumitomo Electric Industries, Ltd. Deceleration-balance type brake pressure control valve assembly
FR2794091A1 (en) * 1999-05-31 2000-12-01 Delphi Tech Inc Automobile braking amplifier comprises front and rear chambers separated by membrane connected to piston and two sets of valves engaging piston and plunger during braking

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245868A (en) * 1977-11-25 1981-01-20 Girling Limited Control valve assembly
FR2456013B1 (en) * 1979-05-10 1986-05-02 Lucas Ind Plc IMPROVEMENTS ON VEHICLE BRAKING SYSTEMS
DE3322098A1 (en) * 1983-06-20 1985-01-10 Daimler-Benz Ag, 7000 Stuttgart DEVICE FOR CONTROLLING THE LOAD AND / OR LIMITING THE BRAKE FORCE OF PNEUMATIC OR HYDRAULIC OR HYDRAULICALLY ACTUATED VEHICLE BRAKES
GB2205369B (en) * 1987-06-05 1991-11-06 Teves Gmbh Alfred Braking pressure modulator

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB446161A (en) * 1934-11-27 1936-04-24 Westinghouse Brake & Signal Improvements in power operated brakes for vehicles
US2092417A (en) * 1936-10-16 1937-09-07 Westinghouse Air Brake Co Fluid pressure brake control
US2953413A (en) * 1958-12-10 1960-09-20 Walter A Dubovick Anti-skid brake mechanism
GB1206713A (en) * 1968-01-19 1970-09-30 Westinghouse Brake & Signal Improvements in or relating to devices responsive to change in their velocities
GB1272935A (en) * 1968-08-22 1972-05-03 Automotive Prod Co Ltd Improvements in or relating to fluid pressure braking systems
GB1221080A (en) * 1968-09-06 1971-02-03 Automotive Prod Co Ltd Improvements in or relating to fluid pressure braking systems for vehicles
FR2130048B1 (en) * 1971-03-15 1975-09-26 Kelsey Hayes Co
US3795424A (en) * 1971-08-16 1974-03-05 Bendix Corp Deceleration responsive proportioning valve for vehicle braking system
US3980343A (en) * 1973-07-23 1976-09-14 Kelsey-Hayes Company Load responsive proportioning valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4688859A (en) * 1984-07-27 1987-08-25 Sumitomo Electric Industries, Ltd. Deceleration-balance type brake pressure control valve assembly
DE3530210A1 (en) * 1984-08-24 1986-03-06 Sumitomo Electric Industries, Ltd., Osaka BRAKE PRESSURE CONTROL VALVE ARRANGEMENT
FR2794091A1 (en) * 1999-05-31 2000-12-01 Delphi Tech Inc Automobile braking amplifier comprises front and rear chambers separated by membrane connected to piston and two sets of valves engaging piston and plunger during braking

Also Published As

Publication number Publication date
DE2850962A1 (en) 1979-05-31
JPS5486131A (en) 1979-07-09
GB2010996B (en) 1982-04-07
BR7807791A (en) 1979-07-31
FR2409891A1 (en) 1979-06-22
IT1106357B (en) 1985-11-11
IT7852088A0 (en) 1978-11-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee