| 摘要 |
<p>A power steering assist system (10) for a watercraft includes a hydraulically actuated steering cylinder assembly (32) and a helm (26). The helm (26) has a high pressure port being coupled to a fluid pressure source (30), a return port coupled to a reservoir (42), and a metering port (86) coupled to a second chamber of the steering cylinder. A control valve assembly in the helm (26) is switchable between at least first and second states to alternatively couple a metering element in the helm (26) to the high pressure and return ports (88) of the helm (26), respectively, hence alternatively permitting pressurized fluid to flow into the metering port (86) from the metering element to steer the watercraft in a first direction and from the metering port into the metering element to steer the watercraft in a second direction. The system (10) is simple, compact, reliable, and still usable in watercraft having multiple engines and/or multiple helms.</p> |
