Driving force distribution control system for 4WD vehicle

Details Driving force distribution control system for 4WD vehicle Driving force distribution control system for 4WD vehicle

1986-08-05

1988-10-11

Love, John J.

Motor vehicles

Having four wheels driven

74866, 180197, 180247, 3644241, B60K 1734

Patent

active

047764244

ABSTRACT:
A four wheel drive system of a vehicle has a multiple disc friction type transfer clutch capable of varying torque transmitted to front wheels, a hydraulic circuit for varying an engagement force of the transfer clutch by supplying a fluid pressure to the transfer clutch, front and rear wheel rotational speed sensors, a sensor for sensing a turning radius corresponding to a steering angle, and a control unit for varying the torque transmitted to the front wheels by sending a control signal to the hydraulic circuit in accordance with a front and rear wheel speed difference, a vehicle speed and the turning radius.

REFERENCES:
patent: 4466502 (1984-08-01), Sakai
patent: 4511014 (1985-04-01), Makita
patent: 4562541 (1985-12-01), Sakakiyama
patent: 4609064 (1986-09-01), Suzuki et al.
"Motor Trend" (Porsche 959), published Sep. 1985.

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