Movement Analysis And Structural Parameter Optimization For Valve Slices In Air Compressor

To guarantee the stability and efficiency of the car, the research of the air compressor is very important for reasonable matching of the air compressor and whole car system. Air valve is one of key parts in the air compressor. Whether the design of air valve is reasonable or not will directly influence the volumetric efficiency and working reliability of the air compressor. The research on the operating principle is the most important field for the air compressor.Based on the study of the operating principle of the valve slice in the air compressor, the author analyzed the structure, the work process and the influential factors of the valve slice. On the foundation of the above-mentioned thorough research, the movement mathematics model of the valve slice in the air compressor is established. The differential equations of the intake process flow, the exhaust flow, the movement and operation for intake and exhaust valves are also presented. They have discovered the movement principle of the valve slice in the air compressor. Then, by means of the limited unites method and Ansys software, it is revealed to solve the movement mathematics model for the valve slice in the air compressor.The dynamic analysis and treatment of the boundary conditions for the valve slice in the air compressor are accomplished. According to related experimental data, the transient dynamics modules are analyzed for intake and exhaust valves.From the experiment and analysis for the natural frequency, oscillation, working condition of the valve slice in the air compressor, the author has got the natural frequency and oscillation of the valve slice. By means of experiments for the whole air compressor, the movement parameters of the valve slice are measured and the operating characteristics obtained. Making the comparison between the results of compressor experiments and its theories calculations, the reasonable theoretical calculation has been proved.The dynamics mathematics modules are established, the influential factors for the compressor volumetric efficiency analyzed, and the compressor volumetric efficiency calculated theoretically also. The author has compared the experimental results with the theory analysis of the volumetric efficiency for the air compressor, and explored the influential factors for the volumetric efficiency of the compressor. They will be the corresponding foundation for the optimized design of the valve slices.Based on the above-mentioned theoretical calculation and experiment analysis, the author has optimized the structure of the compressor by means of the software COSMOSWorks, and got satisfactory results to improve the performance of the valve slices and the volumetric efficiency of the air compressor.