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Study on optimal kinematic synthesis of cam profiles for engine valve trains

机译:发动机气门机构凸轮轮廓的最佳运动学综合研究

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摘要

Kinematic cam profile synthesis for engine valve trains to satisfy the requirements of a large lift area and small acceleration magnitudes is a multi-objective optimization problem. This paper proposed that its Pareto optimal solution set is constructed with constant acceleration profiles. For the definite design of an engine valve train, its Pareto front is a function of the time durations of the positive and negative accelerations. The relationships of positive acceleration, negative acceleration, and lift area for a constant acceleration cam profile are analyzed, and the results are applied to discuss the characteristics of polynomial cam profiles.
机译:用于发动机气门机构的运动凸轮轮廓合成以满足大升程面积和小加速度幅度的要求是多目标优化问题。本文提出,采用恒定的加速度曲线构造其帕累托最优解集。对于发动机气门机构的确定设计,其帕累托前锋是正加速度和负加速度的持续时间的函数。分析了恒定加速度凸轮轮廓的正加速度,负加速度和升程面积之间的关系,并将结果应用于讨论多项式凸轮轮廓的特性。

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