摘要：本文应用AVL Boost软件对CNG发动机进行仿真优化计算，分析点火提前角、压缩比、配气正时和EGR率对缸内热负荷的影响，仿真分析结果表明，点火提前角和EGR率对缸内热负荷影响较大，压缩比和配气正时对热负荷影响较小。发动机进行台架试验验证，各项指标达到了设计目标。
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