ABS pressure reduction when wheel deceleration exceeds a thresho

Details ABS pressure reduction when wheel deceleration exceeds a thresho ABS pressure reduction when wheel deceleration exceeds a thresho

1993-03-10

1994-07-26

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303 93, B60T 832, G01P 300, G05D 1600

Patent

active

053323017

ABSTRACT:
In order to avoid cyclic wheel overbraking in an anti-lock control system for automotive vehicles and nevertheless have assurance that each wheel is operated in optimal slippage regions for the longest possible periods of time so that, for instance, the physically maximum vehicle deceleration is obtained with high comfort control, an ABS controller (3) is provided with an additional internal auxiliary circuit (4) which, on basis of measured wheel decelerations and calculated vehicle reference decelerations superimposes, in a manner adapted to the physical circumstances, fine pressure modulations on the normal pressure modulations.

REFERENCES:
patent: 5141294 (1992-08-01), van Zanten et al.
patent: 5233528 (1993-08-01), Phipps et al.
patent: 5249850 (1993-10-01), Kampfmann et al.
patent: 5249852 (1993-10-01), Beyer et al.

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