バイオガスの成分ガスを燃料とする火花点火機関の燃焼に及ぼすCO_2希釈の影響(熱工学,内燃機関,動力など)

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This paper presents further results of the study on basic combustion characteristics of gaseous fuels simulated for a bio-gas produced through a biomass gasification process with a catalyzer. CO_2 dilution effect was examined for the individual fuel component of CH_4, CO and H_2 in a single-cylinder spark-ignition engine under the condition of WOT, MBT and a constant speed of 1500rpm. For these three kinds of fuels, until a certain level of CO_2 dilution, the thermal efficiency does not vary, since the combustion duration increase is very small, which might have given negligible change in the indicated thermal efficiency or the degree of constant volume combustion. Thus; there is an operating condition under which acceptable level of deterioration of thermal efficiency was obtained with satisfactorily low level of NO_x emission.
2010-10-25