| 摘要 |
Sealing device for a substantially cylindrical rotary cock traversed by at least one channel and upon which an annular sealing joint of axis transverse to the rotational axis of the cock comes to bear. An oil film is established between the control valve 1 and the joint 3 and an inlet chamfer 18 is made on the inlet edge at the point of contact of the joint with the passage 7 of the control valve 1. Application to the control of the exhaust circuit of two-stroke engines. <IMAGE>
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