| 摘要 |
<p>The invention concerns a valve system for a radial-piston engine having sliding rings with channel openings formed therein, i.e. a port ring and a valve ring, said rings being rotatable relatively to one another and yieldingly pressed against one another. In accordance with the invention at least one of the two surfaces in sliding contact with one another on respectively the valve ring (128) and the port ring (130) is provided with recesses (128a) distributed across said face.</p> |
