Control system for a four wheel drive vehicle

Details Control system for a four wheel drive vehicle Control system for a four wheel drive vehicle

1985-02-20

1986-11-11

Mitchell, David M.

Motor vehicles

Having four wheels driven

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

B60K 1734

Patent

active

046217070

ABSTRACT:
A control system for a four wheel drive vehicle is disclosed which either prevents the transmitting of the power of an internal combustion engine incorrectly or gives a warning signal indicative of incorrect operation. The control system includes two sensors for separately detecting the rotational frequency of front and rear propeller shafts, a control circuit for determining the rotational frequency difference between the front and rear propeller shafts and for generating control signals relative to a predetermined set point. A contact or a switch is operated by the control circuit. In one embodiment, an alarm buzzer and an alarm lamp are also provided.

REFERENCES:
patent: 4381828 (1983-05-01), Lunn et al.
patent: 4433748 (1984-02-01), Satoh

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