四サイクル機関の吸込効率に関する研究 : 第4報弁開閉時期に関する実験

概要

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In the last paper, it is clarified theoretically that the volumetric efficiency is considerably affected by a closure angle of suction valve. However, we had no experimental results in regard to such a relation. In this paper, to prove the relation experimentally, the author made an apparatus consisting of six plate cams so as to vary the timing of suction valve stepwise, and studied a volumetric efficiency under several conditions. It is proved consequently that these results show a good agreement with the theoretical curve given in the last report. If we adjust the closure angle of suction valve according to the experimental curve, we may be able to maintain the maximum or best efficiency even when some engine conditions are changed. By some experiments on the opening angle of suction valve, it is clarified that the efficiency is little affected by it.
一般社団法人日本機械学会の論文
1952-12-05