Motor vehicles – Having four wheels driven – With manually operated means for disengaging drive to one or...
Patent
1991-03-26
1993-06-22
Focarino, Margaret A.
Motor vehicles
Having four wheels driven
With manually operated means for disengaging drive to one or...
60437, 180248, B60K 1734, F16D 25063
Patent
active
052211010
ABSTRACT:
A power transmitting system for a four-wheel drive vehicle includes a first hydraulic pump driven interlockingly with the rotation of front wheels, a second hydraulic pump driven interlockingly with the rotation of rear wheels, and a hydraulic clutch for connecting the front wheels and rear wheels. The hydraulic clutch is adapted to be brought into an engaged state by an increase in oil pressure based on the difference between the amount of oil discharged from one of the hydraulic pumps and the amount of oil drawn into the other hydraulic pump. The hydraulic clutch, first hydraulic pump and second hydraulic pump are arranged in that sequence from the front toward rear of the vehicle on an axis extending longitudinally of the vehicle to maximize the air cooling effect on the hydraulic clutch and minimize the length of oil passages between the two hydraulic pumps.
REFERENCES:
patent: 4719998 (1988-01-01), Hiramatsu et al.
patent: 4924989 (1990-05-01), Filderman
patent: 5080187 (1990-10-01), Asano et al.
Arai Kentaro
Hamada Tetsuro
Okubo Kiyokazu
Shibuya Kazunori
Boehler Anne Marie
Focarino Margaret A.
Honda Giken Kogyo Kabushiki Kaisha
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