| 摘要 |
An apparatus for delivering power to a power driven device comprises an engine having a combustion chamber and including a compression relief system for venting the combustion chamber with the atmosphere on a selective basis. The apparatus further includes a transmission mechanism for operatively connecting the engine with the power driven device, which transmission mechanism has a drive position for powering the power driven device and a neutral position for operatively disconnecting the engine from the power driven device. A compression relief control mechanism permits venting through the compression relief system when the transmission mechanism is in the neutral position and prevents venting through the compression relief system when the transmission mechanism is in the drive position.
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