| 摘要 |
<p>In a four-stroke internal combustion engine inlet and exhaust valves are operated by small hydraulic motors connected to the respective valves and fed with pressure fluid supplied through a distributor valve connected to hydraulic pumps and operating to connect the pumps and motors in cyclic order for the feed and return of the fluid to and from the motors. Preferably, the distributor valve has a valve member executing a combined rotory and axial motion and is provided with ports extending obliquely to the axis of the member for the control of the flow to and from the motors.</p> |
