Device and method for improving performance and comfort of a veh

Details Device and method for improving performance and comfort of a veh Device and method for improving performance and comfort of a veh

1997-08-19

1999-07-27

Elms, Richard T.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

180197, 303139, 701 70, 701 82, B60K 2300

Patent

active

059295341

ABSTRACT:
A device for improving the performance of a vehicle having a driving unit, a plurality of wheels and wheel brakes is furnished with a moisture sensor indicating the environmental humidity. The moisture sensor provides its information to an electronic controller of a brake system and optionally another automatic device, such as a ventilation system, window control or sunroof control. The knowledge about the humidity is useful to determine the friction coefficient of the road surface. It is advantageous to measure also the environmental temperature to recognize at least temperatures below the freezing point. If the friction coefficient is known, an electronic control unit can estimate the maximum transferable wheel forces or the maximum achievable vehicle acceleration.

REFERENCES:
patent: 4198573 (1980-04-01), Reneau
patent: 4852469 (1989-08-01), Chuang
patent: 5159991 (1992-11-01), Tsuyama et al.
patent: 5350035 (1994-09-01), Bodier et al.

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