2017 年 52 巻 2 号 p. 230-237
The present study has experimentally investigated the effect of fuel gas composition on the combustion and emission characteristics of a marine lean burn gas engine. The gas engine has the rated power output of 400 kW with a spark ignition pre-chamber system. In the experiments, the gas engine was operated with various fuel gas compositions using Japanese city gas mixed with propane-based LPG (P-LPG), butane-based LPG (B-LPG) and hydrogen. This paper reports in detail the experimental results on the combustion and emission characteristics of the lean burn gas engine affected by the different fuel gas compositions.