Control system for intermediate differential in four-wheel drive

Details Control system for intermediate differential in four-wheel drive Control system for intermediate differential in four-wheel drive

1986-08-22

1987-09-01

Pekar, John A.

Motor vehicles

Having four wheels driven

With differential means for driving two wheel sets at...

3644241, B60K 1734

Patent

active

046902392

ABSTRACT:
A control system for an intermediate differential in a four-wheel drive vehicle, the intermediate differential being provided with a lock mechanism which is operated under control of an actuator to selectively maintain the intermediate differential in a locked condition or an unlocked condition. The control system includes a first sensor arranged to detect a steering angle of a dirigible road wheel for producing a first detection signal therefrom when the steering angle exceeds a predetermined value, a second sensor arranged to detect disconnection of the drive power transmitted to the intermediate differential from a prime mover of the vehicle for producing a second detection signal therefrom when transmission of the drive power is disconnected, and a control device responsive to the first and second detection signals from the sensors for controlling the actuator in such a manner that the lock mechanism is operated to release the locked condition of the intermediate differential when the steering angle exceeds the predetermined value in a condition where the transmission of the drive power is disconnected.

REFERENCES:
patent: 4538700 (1985-09-01), Suzuki
patent: 4609064 (1986-09-01), Suzuki et al.

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