Motor vehicles – Having four wheels driven – With differential means for driving two wheel sets at...
Patent
1991-01-18
1993-01-12
Hill, Mitchell J.
Motor vehicles
Having four wheels driven
With differential means for driving two wheel sets at...
180197, B60K 1734, B60K 17348
Patent
active
051782316
ABSTRACT:
A four-wheel drive vehicle has a center differential which transmits the output torque of a power plant to both front and rear wheels in such a manner as to permit the front and rear wheels to rotate at different speeds. A differential control system has a differential rotation limit member which acts on the center differential to limit differential rotation of the front and rear wheels to a degree which is determined according to the difference in rotational speed between the front and rear wheels. The degree of limitation on the differential rotation of the wheels is determined according to the difference in rotational speed between the front and rear wheels based on first characteristics when the rotational speed of the front wheels is higher than that of the rear wheels and based on second characteristics when the rotational speed of the rear wheels is higher than that of the front wheels. The first and second characteristics are set separately from each other.
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Kameda Osamu
Nagaoka Mitsuru
Nishimura Eizi
Sotoyama Kaoru
Watanabe Ken'ichi
Hill Mitchell J.
Mazda Motor Corporation
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