System for controlling a transfer clutch of a four-wheel drive v

Details System for controlling a transfer clutch of a four-wheel drive v System for controlling a transfer clutch of a four-wheel drive v

1986-04-24

1987-12-08

Krizmanich, George H.

Motor vehicles

With means for detecting wheel slip during vehicle...

180142, 192 0032, 192 0076, B60K 1734

Patent

active

047113170

ABSTRACT:
A four-wheel drive vehicle has an engine clutch for transmitting the output of an engine to a transmission, main drive wheels operatively connected to an output shaft of the transmission, auxiliary drive wheels, and a transfer clutch for transmitting the output of the transmission to the auxiliary drive wheels. A control system is provided with a steering angle sensor producing a steering signal dependent on steering angle of the vehicle, a throttle position sensor producing a signal dependent on throttle position, and a vehicle speed sensor producing a vehicle speed signal. A control unit is provided to respond to the steering signal, the throttle position signal and the vehicle speed signal for controlling the torque capacity of the transfer clutch so as to reduce the torque capacity with increase of the steering angle and with decrease of the vehicle speed and degree of throttle position opening.

REFERENCES:
patent: 4417641 (1983-11-01), Kageyama
patent: 4466502 (1984-08-01), Sakai
patent: 4552036 (1985-11-01), Takano
patent: 4576061 (1986-03-01), Yamakawa et al.
patent: 4582159 (1986-04-01), Suzuki
patent: 4617840 (1986-10-01), Yamakawa et al.

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