Four-wheel drive system

Details Four-wheel drive system Four-wheel drive system

1987-06-05

1989-04-18

Braun, Leslie A.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74711, 192103F, 180248, F16H 4700, F16H 144

Patent

active

048216046

ABSTRACT:
A vehicular four-wheel drive system which includes: an oil pump adapted to be actuated by the relative rotations of a first rotating shaft connected to front wheels and a second rotating shaft connected to rear wheels for discharging pressure oil; a hydraulic clutch having a cylinder chamber communicating with the discharge passage of the oil pump; an electromagnetic throttle valve for controlling the discharge pressure of the oil pump; and a control mechanism for changing the throttle opening of the electromagnetic valve in accordance with the running situation of the vehicle.

REFERENCES:
patent: 2583307 (1952-01-01), Schneider
patent: 3351147 (1967-11-01), Williamson
patent: 3447619 (1969-06-01), Nodwell et al.
patent: 3680652 (1972-08-01), Greene
patent: 4286686 (1981-09-01), Franke
patent: 4466502 (1984-08-01), Sakai
patent: 4572318 (1986-02-01), Cady
patent: 4676336 (1987-06-01), Hiramatsu et al.
patent: 4719998 (1988-01-01), Hiramatsu et al.
patent: 4727966 (1988-03-01), Hiramatsu et al.

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