通过分析不同从动件与凸轮的几何关系，推导出一组平底挺杆、滚子或球面挺杆、尖锥挺杆升程的相互转换通用公式。
Based on the geometrical relation between tappets and cams, uniform formulas for mutual lift-range transition between flat based tappet, roller (or sphere) tappet and cone tappet were presented.
内燃机配气凸轮型线分析，对于了解凸轮外廓线型特征、挺柱升程的运动规律，以及对于凸轮型线的设计改进都具有重要的意义。
The model and linear study on the exhaust cam of internal-combustion engine is of great importance to knowing about the linear features of cam's shell and the law of tappet movement.
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