Electric control apparatus for transfer device in part-time four

Details Electric control apparatus for transfer device in part-time four Electric control apparatus for transfer device in part-time four

1987-07-29

1989-08-08

Marmor, Charles A.

Motor vehicles

Having four wheels driven

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

180197, 180233, 180247, B60K 1734

Patent

active

048544140

ABSTRACT:
An electric control apparatus for a transfer device in a part-time four-wheel drive vehicle is arranged to permit switchover of the transfer device from the two-wheel drive mode to the four-wheel drive mode when a difference in rotational speed between front and rear propeller shafts is smaller than a predetermined value and to prohibit switchover of the transfer device from the two-wheel drive mode to the four-wheel drive mode when the difference in rotational speed between the front and rear propeller shafts is larger than the predetermined value.

REFERENCES:
patent: 4433748 (1984-02-01), Satoh et al.
patent: 4560025 (1985-12-01), Suzuki et al.
patent: 4621707 (1986-11-01), Fukuhara et al.

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