Fluid-pressure and analogous brake systems – Pipeless valves
Patent
1989-04-14
1990-05-08
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Pipeless valves
188181A, 188181C, 303100, 303105, B60T 832, G05D 1300, G05D 1501
Patent
active
049232550
ABSTRACT:
A method of controlling the brake pressure in an antilock (ABS) vehicle brake system provides for adapting the wheel at which the brake is applied to the optimum course of the coefficient of friction/slip curve by determining the rotational retardation of the braked wheel, upon initiation of a braking action, after given time intervals each and comparing it with the rotational retardation of the preceding time interval. Moreover, the brake pressure is varied in response to the result of the comparison. The renewed acceleration of the retarded wheel also is monitored accordingly so as to effect further lowering of the brake pressure if the renewed acceleration or the gain in acceleration is too small.
REFERENCES:
patent: 3832011 (1974-08-01), Marouby
patent: 4193642 (1980-03-01), Miller
patent: 4485445 (1984-11-01), Braschel
patent: 4733920 (1988-03-01), Pannbacker
patent: 4763960 (1988-08-01), Uchida et al.
Bosch Technische Berichte-English Special Edition (Feb. 1982), Technical and Scientific Report 1 concerning R&D, and Production in the Bosch Group-pp. 65-93 and copy in German.
Braschel Volker
Roller Dieter
Schmitt Hubert
Butler Douglas C.
Lucas Industries Public Limited Company
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