System for split-to-high mu detection and control for anti-lock

Details System for split-to-high mu detection and control for anti-lock System for split-to-high mu detection and control for anti-lock

1993-07-30

1995-05-30

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

188181C, 303 96, 303100, B60T 832, B60T 884

Patent

active

054196230

ABSTRACT:
A system is provided for modifying anti-lock brake control to a vehicle braking on a surface having a split-mu to higher-mu transition. The time duration of the apply stage of an anti-lock brake system cycle is measured for the two front wheels. The measured apply stage durations are compared to a selected threshold. The transition from the split-mu surface to the higher-mu surface is detected when the apply stage duration for the lower-mu wheel exceeds the selected threshold. An increased brake pressure rate is applied to both front wheels when the split-mu to high-mu transition is detected.

REFERENCES:
patent: 5224766 (1993-07-01), Oikawa et al.
patent: 5358319 (1994-10-01), Negrin

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