Thus four style ⅰ multiple cam profiles with different parameters, two polynomial profiles and one multi cycloid profile are designed and applied to the valve train's multibody system dynamics model. 采用4种不同参数的低次分段组合Ⅰ型凸轮型线、两种高次多项式型线和复合摆线设计了7种型线,并将其运用于该配气机构的多体系统动力学模型中。