火花点火式天然ガス機関の燃焼室内における燃焼特性 : 第2報, スワール比, 点火栓電極向きおよび点火栓位置の影響

概要

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An experimental study was made to investigate the effect of swirl ratio, spark plug electrode direction and spark plug position on in-cylinder combustion in a spark-ignited natural gas engine. Flame propagation in a single-cylinder visualization engine was observed from bottom of the piston by the high speed schlieren method, over the wide range of nominal swirl ratio, spark plug electrode direction and spark plug position. The results showed that larger swirl ratio led to more rapid flame propagation, resulting in larger heat release rate and larger cylinder pressure. Spark plug electrode direction had little effect on flame propagation, resulting in little difference in heat release rate and cylinder pressure. Farther spark plug position to cylinder axis led to more rapid flame propagation, resulting in larger heat release rate and larger cylinder pressure, excluding extremely far spark plug position.
一般社団法人日本機械学会の論文
2000-03-25