| 摘要 |
<p>A system for controlling the movement of hydraulic fluid through the fluid containing chambers of a hydraulic cylinder (26) operatively connected between a marine vessel (14) and its outboard drive unit (10) includes valves (40, 42) disposed within the cylinder (26) to restrict the flow of fluid between the fluid chambers (32, 33) and a bypass for allowing unrestricted flow of fluid between the fluid chamber (32, 33). The system includes a trim valve to allow limited flow of fluid in a first direction of piston movement and a tilt valve to allow unrestricted flow of fluid between the fluid chambers (32, 33) of the cylinder (26). A velocity sensing valve (54) is provided to sense and prevent rapid upward movement of the drive unit (10).</p> |
