2227 バイオガス模擬燃料の火花点火燃焼特性(J16-3 燃料多様化と燃焼・化学反応制御(3),ジョイントセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

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  • 2227 Combustion Characteristics of a Simulated Biogas Fuels in a Spark-Ignition Engine

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The objective of the present study is to reveal the combustion and emission characteristics of a spark-ignition engine fuelled with three kinds of gaseous fuels; H_2, CO and CH_4 which are produced from gasification process of a biomass fuel. Under WOT and 1500 rpm condition, CO gas shows lower thermal efficiency than H_2 and CH_4, although it gives higher combustion temperature which is supported by the higher exhaust gas temperature and much higher NOx emissions than those for CH_4. At around the phi of 0.4 H_2 shows almost comparable thermal efficiency with that for CH_4 at its stoichiometric condition, which must be derived by the faster burn of main flame propagation.

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