Motor vehicles – Having four wheels driven
Patent
1990-11-30
1992-03-31
Marmor, Charles A.
Motor vehicles
Having four wheels driven
180247, 180383, 464 23, B60K 1734
Patent
active
050999435
ABSTRACT:
The device engages the four wheel drive transmission of a vehicle which comprises two transmission shafts for the rear wheels and the front wheels, a clutch installed along a front shaft and adapted, if engaged, to couple the shafts for rotation together, and a drive transmission geometry such that mechanically, with the clutch engaged, the mechanical transmission causes the front wheels to be driven slightly faster than the rear wheels. The device includes two coupling halves adapted to connect two portions of the front shaft mechanically with the possibility of relative rotation, an element adapted to translate between two end positions corresponding to positive and negative relative rotation between the coupling halves, a sensor for detecting the movement of the element, and an electric central control unit to which the sensor is connected and adapted to control engagement or disengagement of the clutch automatically.
REFERENCES:
patent: 3408830 (1968-11-01), Sutaruk et al.
patent: 3521462 (1970-07-01), Heidrich
patent: 4723624 (1988-02-01), Kawasaki et al.
patent: 4883444 (1989-11-01), Strickler et al.
Resca Ivano
Rondelli Angelo
Fiatgeotech - Tecnologie per la Terra S.p.A.
Hurley Kevin
Marmor Charles A.
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