Front wheel drive clutch control system

Details Front wheel drive clutch control system Front wheel drive clutch control system

1989-07-03

1990-08-28

Hill, Mitchell J.

Motor vehicles

Having four wheels driven

With means for braking either structure transmitting drive...

180247, 192 4A, 192 13A, B60K 2308

Patent

active

049517759

ABSTRACT:
A clutch control system for the front wheel drive clutch of a four-wheel drive vehicle engages the front wheel drive clutch as a function of three brake-operated switches, a pair of manually-operated "OFF-ON-AUTO" mode switches and a pair of speed responsive switches connected between a battery and the solenoid of a front wheel drive clutch control valve. The system engages the clutch when vehicle speed is above a limit speed and both service brakes are applied even when the mode switches are in their "OFF" position wherein the clutch is normally disengaged.

REFERENCES:
patent: 4811811 (1989-03-01), Bergene
patent: 4878559 (1989-11-01), Moon et al.

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