| 摘要 |
Device for controlling the circulation of gases from and to an internal combustion engine combustion chamber. The sealing ring 6 is equipped with injection means 13, 20, 19, 21; a lubricating and cooling fluid such as oil in the interface and between the continuous sealing surface 22 around the orifice 5 and the outer surface 8 of the cock 1. Application to the timing of four stroke engines with a rotary cock. <IMAGE>
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