Several approaches in the context of a high-compression-ratio, spark-ignition engine made by modifying a commercial diesel engine have been examined. The accuracy of calculating the equivalency ratio from exhaust gas analysis and determining the commencement of combustion from the mass fraction burned has been tested. The effect of trapped mass on the energy balance inside the cylinder has been studied. This study evaluates the estimation of the relative dosing from the emission composition as a verification criterion for the calculation of this parameter from the air and fuel flows, and the effect of the residual mass on the mass of the fuel is also analysed.The results suggest that the approaches for determining equivalency ratio, starting combustion, and trapped are useful tools for assessing data quality and investigating sparkignition engines with high compression ratios.

中文翻译：

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火花点火发动机改装商用柴油发动机能量平衡变量的排放分析

已经研究了通过改进商用柴油发动机制造的高压缩比火花点火发动机的几种方法。已经测试了从废气分析计算当量比和从燃烧质量分数确定燃烧开始的准确性。研究了被困质量对圆柱体内能量平衡的影响。本研究评估了排放成分的相对剂量估算，作为从空气和燃料流量计算该参数的验证标准，并分析了残余质量对燃料质量的影响。结果表明确定当量比、启动燃烧的方法，