| 摘要 |
The present invention provides an apparatus and method for selective control of gas flow in a combustion chamber in an internal combustion engine through a moveable or retractable seat valve that is independent of piston position. The retractable seat valve has complete freedom of valving events such that gas flow can be selectively controlled at any time during the engine cycle, or throughout the engine cycle. Further, the retractable seat valve is scalable for adaptation to internal combustions engines of various bore sizes. The retractable seat valve comprises a retractable seat, a stationary seat, a retractable seat actuator member, a pin connector for translation of retractable seat actuator member movement to the retractable seat, and a valve actuator assembly that allows the retractable seat valve be selectively positioned in the cylinder head in a closed position, open position or anywhere therebetween.
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