As one important part of the engine, the performance of valve train decides the performance of engine, the valves also play a very important role in the ultimate effect of the valve train. The study on the valve is one main question for the study of the engine.In the paper, we have introduced the research achievement of the field domestically and abroad, and then founded the dynamic model while taking the EQ6100 gasoline engine as researched object. After giving all the value of the parameters and solving t...