メタノール熱分解ガスを用いた火花点火機関における燃焼室内空気流動および排気再循環の影響(熱工学,内燃機関,動力など)

概要

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This research analyzed characteristics of combustion and emissions in a spark-ignition internal combustion engine fueled with methanol-reformed gas. Experiments were done with a model gas with 67% of hydrogen and 33% of carbon monoxide that corresponds to the thermally decomposed methanol. This research cleared influences of in-cylinder air motion by swirl on thermal efficiency and exhaust emissions. While the enhanced air motion is effective to improve the combustion efficiency, it simultaneously increases the heat transfer from burning gas to the combustion chamber wall. Because of this, the thermal efficiency decreases in some cases. Influence of EGR on NO_x emission and thermal efficiency in the combustion was also analyzed in this research.
2004-10-25