Working pressure: 0.44Mpa; working pressure: 0.44Mpa; shell pressure: 0.18mpa; working temperature: 280C; heat exchanger area: 18.5m2; solubility: 6-1:12; total power: 42kw. The motorcycle muffler should have two functions: spray flash evaporation, surface heat transfer, sufficient spray quantity and uniform heat transfer distribution. The four point leveling accuracy of pressure slider is 0.05mm in static state and 0.10mm/m in dynamic state. The static time value is 0.02mm, and the dynamic time value is 0.04mm/m; in order to make our products reach the international advanced level and replace the imported products, we will research and develop the "four point balance control technology", and use the self-made muffler in our products. The stroke control accuracy of press slider is ± 0.05mm and ± 0.05mm respectively. In order to make our products reach the international advanced level and replace the imported products, we will develop a precision control technology and apply it to our products.