Design Research In Double Side Scroll Supercharged Vehicle Engine

Supercharged vehicle engine can effectively increase the efficiency of the machine,save energy;At the same time,it can also reduce the exhaust gas and improve atmosphere environment.At present,waste-gas turbo supercharged engine is widely used in all kinds of vehicle,but this kind of supercharged vehicle engine has its limits.Scroll machine which possess characteristics of high efficiency,small bulk,light weight,low noise,simple structure and working smoothly etc,is used in supercharged vehicle engine.The analysis on backgrounds of scroll machine is stated,the way how the engine is supercharged and the structure of the scroll supercharger are introduced,based on the merits of both the turbocharger and scroll compressor a car engine turbine-driven scroll compressor supercharger programme is designed.Take into account the characteristics of vehicle supercharger's large-atmospheric and low-pressure,double side circle involute line scroll compressor is used in the turbocharger on the basic of G -supercharger.According to the scroll compressor's working process character,its thermodynamic model is established and analyzed,and its thermodynamic process is got.Since there is a hole for the axis in the plate and the fully symmetric Scroll tooth shape,Its geometry and force are different from the situation of the traditional scroll compressor,from the analysis of the structure,the scroll compressor geometric Theory is got and from the analysis of the geometric relationships the calculation method of both the area for the hole involute end and begin angle is got,with the ability of the Supercharger speeding up response,first time the optimization principle that moving scroll plant inertia moment as the objective function to select parameters for scroll plant is put forward and the method of calculating moment of inertia is given,with the principle of Crank pin anti-rotation mechanism,the design method of assistant shaft drivn by the teeth belt as anti-rotation mechanism is Presented.Eddy was through moving scroll plant force analysis and the main axis balance Design,main axis and assistant axis mechanical model are presented,it is the condition for main axis and assistant axis to further design.