GB2002474A - Anti-skid brake control system - Google Patents

Anti-skid brake control system

Info

Publication number
GB2002474A
GB2002474A GB7832836A GB7832836A GB2002474A GB 2002474 A GB2002474 A GB 2002474A GB 7832836 A GB7832836 A GB 7832836A GB 7832836 A GB7832836 A GB 7832836A GB 2002474 A GB2002474 A GB 2002474A
Authority
GB
United Kingdom
Prior art keywords
apply
stage
duration
brake
change
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
GB7832836A
Other versions
GB2002474B (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
Priority to GB7832836A priority Critical patent/GB2002474B/en
Publication of GB2002474A publication Critical patent/GB2002474A/en
Application granted granted Critical
Publication of GB2002474B publication Critical patent/GB2002474B/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
    • B60T8/34—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
    • B60T8/50—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 means for controlling the rate at which pressure is reapplied to or released from the brake
    • B60T8/5006—Pressure reapplication by pulsing of valves
    • 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
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
    • B60T8/1761—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
    • B60T8/17613—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure based on analogue circuits or digital circuits comprised of discrete electronic elements
    • 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
    • B60T8/50—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 means for controlling the rate at which pressure is reapplied to or released from the brake
    • B60T8/5075—Pressure release by pulsing of valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

An anti-skid brake control system produces a brake pressure release signal and a subsequent re-apply signal in successive brake pressure release/re-apply cycles; and also a change-over signal to trigger a change from a first, rapid re-apply stage, to a second, slow re-apply stage, during the re-apply stage of each cycle. The change-over point in each cycle is controlled in a manner dependent on the duration of the re-apply stage in the preceding cycle, whereby the duration of the re-apply stage is dynamically adjusted to assume a preset value. Preferably the change- over point in each cycle is further controlled in a manner dependent on the duration of the preceding brake release stage so that the duration of the brake release and brake re-apply stages changes in the same sense. <IMAGE>
GB7832836A 1977-08-10 1978-08-09 Anti-skid brake control system Expired GB2002474B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7832836A GB2002474B (en) 1977-08-10 1978-08-09 Anti-skid brake control system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3345777 1977-08-10
GB7832836A GB2002474B (en) 1977-08-10 1978-08-09 Anti-skid brake control system

Publications (2)

Publication Number Publication Date
GB2002474A true GB2002474A (en) 1979-02-21
GB2002474B GB2002474B (en) 1982-03-24

Family

ID=26261878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7832836A Expired GB2002474B (en) 1977-08-10 1978-08-09 Anti-skid brake control system

Country Status (1)

Country Link
GB (1) GB2002474B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050280A2 (en) * 1980-10-20 1982-04-28 Knorr-Bremse Ag Antilock braking force control circuit
FR2563486A1 (en) * 1984-04-26 1985-10-31 Bruss Polt I Brake antilocking device for motor vehicle
EP0256665A2 (en) * 1986-08-02 1988-02-24 Automotive Products Public Limited Company Vehicle antilock braking system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050280A2 (en) * 1980-10-20 1982-04-28 Knorr-Bremse Ag Antilock braking force control circuit
EP0050280A3 (en) * 1980-10-20 1984-04-18 Knorr-Bremse Gmbh Antilock braking force control circuit
FR2563486A1 (en) * 1984-04-26 1985-10-31 Bruss Polt I Brake antilocking device for motor vehicle
EP0256665A2 (en) * 1986-08-02 1988-02-24 Automotive Products Public Limited Company Vehicle antilock braking system
EP0256665A3 (en) * 1986-08-02 1988-09-07 Automotive Products Public Limited Company Vehicle antilock braking system

Also Published As

Publication number Publication date
GB2002474B (en) 1982-03-24

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Legal Events

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

Effective date: 19920809