Under this condition their characteristics, including the maximum speed without dynamic abnormality, the maximum contact stress of earn--tappet pair, the ample factor of tappet lift curve and the lubrication characteristics are compared.

• 在各种型线的参数都已优化的基础上比较了它们的特性，包括机构不发生动力学异常的转速上限、凸轮一挺柱副最大接触应力、挺柱工作升程图丰满系数和凸轮的润滑特性数；