| 摘要 |
<p>Hydraulic installation in a boat hull for swinging a propeller rig pivotally suspended in a shell on a boat transom by means of a piston-cylinder device arranged in a hydraulic control circuit. A control valve included in the hydraulic circuit for controlling the flow to and from the hydraulic cylinder is sealingly mounted in a through-opening in the shell, so that one side of the valve faces outwardly towards the propeller rig in order to be subjected to water spray during driving and serve as an oil cooler.</p> |
