Power steering system

摘要

In a power steering system for a marine vehicle having a propulsion unit and an operator actuatable steering helm, a power steering assist apparatus including a hydraulic fluid cylinder-piston assembly and actuated in response to steering actuation at the steering helm, and controls for maintaining anti-feed back upon a failure in the fluid source including a valve to establish fluid communication between a fluid source for the cylinder-piston assembly and the chamber in the assembly to either side of the piston thereby maintaining the chamber substantially full of hydraulic fluid during steering to effect movement of the piston upon steering actuation.