B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
341/73.4
B60T 8/78 (2006.01) B60T 8/172 (2006.01) B60T 8/1763 (2006.01)
Patent
CA 2010642
ADAPTIVE WHEEL SLIP THRESHOLD Abstract of the Disclosure A brake control system is described that maximizes vehicle braking efficiency by first determining, and then cycling wheel brake pressure and consequently wheel slip about, the critical slip value for the road surface. As each road surface has unique tractive characteristics, the amount of brake pressure required to produce critical wheel slip, and hence maximum brake force, varies for different coefficient of friction road surfaces. This invention determines the coefficient of friction for the operating surface and adjusts the system slip threshold to accurately mimic the actual critical slip value for the road surface. The invention then applies and releases wheel brake pressure so as to cycle wheel slip about this critical slip value.
Kade Alex
Leppek Kevin G.
Walenty Allen J.
General Motors Corporation
Gowling Lafleur Henderson Llp
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