| 摘要 |
<p>PURPOSE:To surely keep sufficient volume efficiency, ingeniously secure sufficient power efficiency, and simultaneously suppress increase of a discharge temperature. CONSTITUTION:Introduction passages 2A to 2F are formed between bores 1A to 1F and a center axis port 1a. A rotary valve 22 having an intake passage 25 is provided with a residual gas bypass groove 28 for bypassing residual gas through the introduction passages 2A to 2F. A high pressure side groove 28a of the residual gas bypass groove 28 is specified in its angle so as to exceed a top dead center T of a piston by degree. In a bore 1D after completion of discharge, the residual gas is expanded again a little. An inside space of the bore 1D is cooled through the slight re-expansion of the residual gas by the absorption rate of heat. Attraction force to be applied to a tilting plate is decreased by the slight re-axpansion rate of the residual gas.</p> |
