Anti torque shock control device and method engaging torque tran

Details Anti torque shock control device and method engaging torque tran Anti torque shock control device and method engaging torque tran

1987-12-21

1988-12-20

Pekar, John A.

Motor vehicles

Having four wheels driven

With manually operated means for disengaging drive to one or...

180249, 192 352, 192 358, 3644241, B60K 2308

Patent

active

047920122

ABSTRACT:
A vehicle has at least two wheels, a transmission mechanism, and a clutch which can be selectively engaged to at least partially rotationally couple together these two wheels. This anti torque shock control device includes a means for detecting whether or not shift range of the transmission mechanism is a vehicle non driving range or a vehicle driving range, and a means for controlling the clutch to be at least partially engaged, when shift range of the transmission mechanism alters from a vehicle non driving range to a vehicle driving range. Thus torque shock and power train noise at this time are effectively prevented. The method of operation of this device is also described. In various applications, the clutch may be a switchover clutch for controlling the vehicle between two wheel drive operation and four wheel drive operation, selectively coupling between front wheels of the vehicle and rear wheels of the vehicle; or may be a central differential control clutch for controlling a central differential device of the vehicle between modes of operation in which the central differential device does and does not provide central differential effect between the front wheels of the vehicle and the rear wheels of the vehicle; or may be an axle differential control clutch for controlling a front or a rear differential device of the vehicle between modes of operation in which it does and does not provide differential effect between a pair of left and right wheels of the vehicle on the same axle.

REFERENCES:
patent: 3910388 (1975-10-01), Moori et al.
patent: 4452331 (1984-06-01), Lunn et al.

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