Device for controlling 4wd vehicle central differential restrict

Details Device for controlling 4wd vehicle central differential restrict Device for controlling 4wd vehicle central differential restrict

1987-04-30

1989-06-20

Marmor, Charles A.

Motor vehicles

Having four wheels driven

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

180197, B60K 1734

Patent

active

048402478

ABSTRACT:
A central differential device for differentially transmitting rotational power from the engine to the front wheel propeller shaft and the rear wheel propeller shaft in a vehicle is locked up step by step to restrict its differential operation gradually when the difference between front wheel rotational speed and rear wheel rotational speed is larger than a reference value while checking at each step before further increasing the degree of locking up if the difference is still larger than the reference value which may be changed for such each step.

REFERENCES:
patent: 3845671 (1974-11-01), Sharp et al.
patent: 4511014 (1985-04-01), Makita
patent: 4521856 (1985-06-01), Phelps
patent: 4552241 (1985-11-01), Suzuki
patent: 4566544 (1986-01-01), Suzuki

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