Slip detecting system for a four-wheel drive motor vehicle

Details Slip detecting system for a four-wheel drive motor vehicle Slip detecting system for a four-wheel drive motor vehicle

1988-10-20

1989-12-05

Marmor, Charles A.

Motor vehicles

With means for detecting wheel slip during vehicle...

180248, B60R 1734

Patent

active

048846503

ABSTRACT:
A system for detecting a slip for four wheels of a four-wheel drive motor vehicle has a speed difference detector for detecting the difference between the front-wheel speed and the rear-wheel speed and for producing a speed difference signal when the difference is larger than a predetermined value. A wheel acceleration calculator is provided for calculating wheel acceleration, and a vehicle body acceleration detector is provided for detecting vehicle body acceleration. When the difference of the wheel acceleration from the vehicle body acceleration is larger than a predetermined value, and when the speed difference signal is not generated, which means that there is no difference between the front and rear wheel speed, a four-wheel slip signal is generated.

REFERENCES:
patent: 4466502 (1984-08-01), Sakai
patent: 4511014 (1985-04-01), Makita
patent: 4776424 (1988-10-01), Naito

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