323 高過給・高EGRディーゼル機関における燃焼過程の数値解析(OS-1 直噴ディーゼル機関,研究発表講演)

概要

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In other to predict the combustion process in a diesel engine with high boost pressure and high EGR ratio, a method for determining the initial gas compositions was investigated. The compositions were predicted reasonably well by means of zero-dimensional engine combustion simulation using the CHEMKIN code with elementary reactions. Using these initial gas compositions, the combustion process in a diesel engine with high boost pressure and high EGR ratio was numerically analyzed using the authors' GTT code with ignition and combustion models, whose model constants were optimized by the genetic algorithm. By comparing the calculated results with the experimental ones, it has been confirmed that the rate of heat release, cylinder gas pressure and NO emission can be predicted reasonably well.
社団法人日本機械学会の論文
2005-03-18