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We patented the method of carrying out the constant-volume combustion under the extreme-high pressure, and if this technology is in practice, we may be able to improve dramatically the knock limit in the constant-volume combustion.In this paper, the formula which expressed the ratio of theoretical thermal efficiency of the constant-pressure cycle to the constant-volume cycle under the same supplied heat quantity and the compression ratio were drawn, and the comparison / consideration was quantitatively carried out based on this formula. As a result, it became clear that the theoretical thermal efficiency of the constant-volume cycle was higher than the constant-pressure cycle, when the compression ratio was lower and the air-fuel ratio was richer.It was suggested that the new heat engine which could be operated in high-speed having the theoretical thermal efficiency was equal to the conventional diesel engine.
東京都立産業技術高等専門学校の論文