【摘要】 以往的ＣＡＤ技术，都是以数值计算为主，结合计算机绘图，这只适用于处理数值信息，用以解决数值模型（如数学模型）描述的问题。而燃烧系统的设计需加入专家经验，并接受试验结果的约束，难以用数值模型表达，必须用新的软件技术来实现。本文即针对应用射流燃烧技术的主要改动件——气缸盖的设计、制图问题，在计算机辅助设计中加入了人类专家的参与，是专家经验和数值计算程序库的集成，是智能化的软件系统，应用该系统可以自动修改汽油机射流燃烧系统的气缸盖图形更多还原

【Abstract】 The existing CAD techniques mainly rely on the numberical calculation incorporated with computer drawing.They are only applicable to dealing with numerical information and solving the problems described by mathematical model.However,when designing combustion system,experts experience is necessary and it must be restrained by the experimental result,such function has to be realized by a new software technique.This paper focuses on the design and drawing problems of the cylinder head.An intelligent software of CAD is established combined with experts experience and calculation database.This system can modify automatically the drawings of the cylinder head in TJ jet combustion system of gasoline engines.更多还原