Method of and apparatus for estimating surface friction

Details Method of and apparatus for estimating surface friction Method of and apparatus for estimating surface friction

1993-04-27

1995-02-28

Teska, Kevin J.

Boots, shoes, and leggings

36442603, 180197, 3031132, 73 9, B60K 3100, B60T 832

Patent

active

053943295

ABSTRACT:
Measurements of wheel speed are compared to detect excessive wheel spin. An output of the wheel spin detector is supplied to a drive reducing device for reducing vehicle drive engine output in response to detection of excessive wheel spin. The reduced vehicle drive engine output is compared with a predetermined value by a subtracter. An estimate of surface friction is updated with a value dependent upon the output of the subtracter.

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