DME副室式圧縮着火エンジンにおける副室容積が燃焼に及ぼす影響(熱工学,内燃機関,動力など)

概要

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The DME IDI compression ignition engine was experimented for the mixture formation promotion of DME low pressure injection in a small compression ignition engine. The influence of the divided-chamber volume ratio on combustion was investigated under a connecting passage area ratio constant condition. Consequently, High thermal efficiency and low NO_x emission were able to be achieved in comparatively delaying fuel injection timing, because mixture formation was promoted in the divided-chamber. And heat loss increased when the volume of the divided-chamber was large, the mixture was not promoted when it was small, and a unburnt fuel flowed out to the main chamber. Therefore, high thermal efficiency and the low emission gas were obtained by selecting suitable the divided-chamber volume in the high load region where much fuel existed. And the operating range was also expanded.
社団法人日本機械学会の論文
2005-02-25