Active hydraulic pressure control

Details Active hydraulic pressure control Active hydraulic pressure control

1991-07-30

1992-08-04

Lorence, Richard

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

137596, 13762561, 180143, 60421, B62D 508

Patent

active

051350700

ABSTRACT:
An active hydraulic pressure control system includes a sensor, a valve, a controller and an actuator. In accordance with a broad aspect of the present invention, the controller determines a pressure differential between the pressure sensed by the sensor in a high pressure supply line of a hydraulic system and a predetermined pressure. In response to such pressure differential, the actuator drives the valve which has a variable flow orifice to communicate hydraulic fluid between the high pressure supply line and a reservoir of hydraulic fluid to eliminate the pressure differential.

REFERENCES:
patent: 3692137 (1972-09-01), Inoue
patent: 3870077 (1975-03-01), Nakamura
patent: 4632638 (1986-12-01), Shibayama et al.
patent: 4694927 (1987-09-01), Nagae
patent: 4757980 (1988-07-01), Schubert
patent: 4899842 (1990-02-01), Emori et al.
patent: 4912343 (1990-03-01), Stuart
patent: 4926906 (1990-05-01), Ichihashi et al.

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