GB1388218A - Anti-lock brake systems - Google Patents
Anti-lock brake systemsInfo
- Publication number
- GB1388218A GB1388218A GB4298873A GB4298873A GB1388218A GB 1388218 A GB1388218 A GB 1388218A GB 4298873 A GB4298873 A GB 4298873A GB 4298873 A GB4298873 A GB 4298873A GB 1388218 A GB1388218 A GB 1388218A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheel
- deceleration
- pressure
- flow
- accumulator
- 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
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
- B60T8/42—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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
1388218 Antiskid braking systems GENERAL MOTORS CORP 13 Sept 1973 [30 Oct 1972] 42988/73 Heading F2F A vehicle anti-lock brake system comprises a governor driven at the speed of a braked wheel and providing fluid at a pressure proportional to wheel speed and at a flow rate proportional to wheel acceleration or deceleration, an accumulator 80; a valve 160 arranged during wheel acceleration to supply fluid at a pressure proportional to wheel speed to charge the accumulator, an orifice 128 arranged during deceleration of the braked wheel to discharge pressure fluid from the accumulator 80 to the governor at a flow rate limited to a predetermined maximum value by the flow threshold of the orifice so that during wheel deceleration at a rate exceeding that corresponding to the maximum value a differential is established between wheel speed pressure and accumulator pressure, and means responsive thereto in the form of a valve 100 to selectively release and re-apply braking pressure. The governor is constructed to provide flow in one direction during acceleration and in the opposite direction during deceleration and the flow orifice 128 restricts the flow to a rate not exceeding a predetermined value corresponding to the maximum deceleration without wheel lock-up so that deceleration in excess of this value causes a pressure difference across the orifice to operate the control valve.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00302024A US3817585A (en) | 1972-10-30 | 1972-10-30 | Anti-lock brake system |
US00302097A US3819235A (en) | 1972-10-30 | 1972-10-30 | Anti-lock brake system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1388218A true GB1388218A (en) | 1975-03-26 |
Family
ID=26972719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4298873A Expired GB1388218A (en) | 1972-10-30 | 1973-09-13 | Anti-lock brake systems |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2347878C3 (en) |
FR (1) | FR2204525B1 (en) |
GB (1) | GB1388218A (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3713704A (en) * | 1970-07-27 | 1973-01-30 | Trw Inc | Brake control system with skid control |
GB1338069A (en) * | 1971-01-21 | 1973-11-21 | Simms Group Research Dev Ltd | Braking apparatus |
US3718377A (en) * | 1971-09-30 | 1973-02-27 | Gen Motors Corp | Hydraulic vehicle ground speed computer |
-
1973
- 1973-09-13 GB GB4298873A patent/GB1388218A/en not_active Expired
- 1973-09-20 DE DE19732347878 patent/DE2347878C3/en not_active Expired
- 1973-10-30 FR FR7338703A patent/FR2204525B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2347878B2 (en) | 1978-04-20 |
FR2204525A1 (en) | 1974-05-24 |
DE2347878C3 (en) | 1978-12-14 |
FR2204525B1 (en) | 1977-09-30 |
DE2347878A1 (en) | 1974-05-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |