建立了七次多项式动力凸轮型线的优化设计数学模型；
The mathematical model of optimizing design for hepta polynomial dynamic cam was established.
结果表明，采用高次多项式动力凸轮用于高速汽油机凸轮设计，能够获得相对平稳的气门运动特性。
The research results reveal that comparative valve balanced movement characteristic can obtain using high order polynomial dynamic cam in high speed gasoline engine.
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