Hydraulic power system

摘要

A hydraulic actuation system includes a differential unit having a hydraulically-actuated differential, a power steering unit, a hydraulic pump, a reservoir, a controller, an electronically-controlled flow control manifold, and a proportional pressure control solenoid valve. A flow control manifold may control fluid flow to the power steering unit and the differential. The manifold may include a manifold inlet connected to a pump; first manifold outlet connected to a differential; second manifold outlet connected to a reservoir; third manifold outlet connected to a power steering unit; two-way solenoid valve connected to a manifold inlet and controlled by a controller; flow control valve connected to a two-way solenoid valve and a first manifold outlet; and a pressure differential sensing valve connected to a two-way solenoid valve, the manifold inlet, and the third manifold outlet. A proportional pressure control solenoid valve may connect the first manifold outlet and the differential.

主权项

1. A hydraulic actuation system comprising:
a differential unit including a hydraulically-actuated differential; a power steering unit; a hydraulic pump; a reservoir; a controller; an electronically-controlled flow control manifold configured to control fluid flow to the power steering unit and the hydraulically-actuated differential, the manifold including
a manifold inlet connected to the pump,a first manifold outlet connected to the hydraulically-actuated differential,a second manifold outlet connected to the reservoir,a third manifold outlet connected to the power steering unit,a two-way solenoid valve connected to the manifold inlet and controlled by the controller,a flow control valve connected to the two-way solenoid valve and the first manifold outlet, anda pressure differential sensing valve connected to the two-way solenoid valve, the manifold inlet, and the third manifold outlet; and, a proportional pressure control solenoid valve connected to the first manifold outlet and the hydraulically-actuated differential.