Research And Design New Muffler

Abstract:In the driving of a motor vehicle, the noise and emissions of the engine exhaust pollution is very high, in order to reduce noise and reduce pollution, on a motor vehicle is provided with a muffler device. Muffler effect of the various principles of common but are less than ideal, and also contains large amounts of particulate matter in the processing of the gas after the muffler, floe mixture of oil and water as well as carbon monoxide and other harmful substances that directly endanger the ecological environment.The heavy automobile engine exhaust noise is one of the main source of noise of car noise, is also one of the difficulties in the vehicle design noise control, control, and reduce the exhaust noise is the most effective way is to install and use exhaust exhaust system muffler. Exhaust muffler exhaust noise control issue is one of how to design a high performance muffler and low resistance loss.Usually complex muffler are formed by several basic muffler unit stitching or a combination of its muffler theory is one or various combinations of the design. Will use a one-dimensional fluid dynamics software GT-Power muffler preliminary design complete its basic muffler unit and its structure and properties of numerical analysis and simulation. This paper first discusses the basic level expansion muffler unit spin extension muffler unit, mixing silencer unit, two shunt muffler unit confrontation interference silencer unit muffler unit analyzed the performance of the muffler structural parameters of the muffler performance muffler, for example, the expansion ratio, the expansion of the cavity length, the length and angle of the swirl plate, the marriage chamber the size of the shunt tube length, perforation rate performance muffler, and analyzed the corresponding affect change in the law.Based on the above study law and related muffler is improved design theory and principle of, calculation of Shaanxi Auto WP10-type diesel engine exhaust muffler is the pass loss of data, muffler verify muffler performance, muffler carry out the optimization of design and structural improvements. GT-Power software simulation analysis, the results show that the improved design new muffler performance has improved greatly and improve.The purpose of this paper is to provide a new type of heavy-duty automobile muffler design, to improve the performance of existing Shaanxi vehicle muffler to reduce noise pollution. Shaanxi Automobile WP10engine exhaust muffler is theoretical research, numerical analysis and simulation calculation to verify subsequent heavy-duty automobile muffler is the design optimized to provide a reference material, and for heavy-duty vehicles muffler is the further improvement of optimization to provide a realistic and practical approach, Shaanxi Auto heavy-duty automobile muffler design and analysis of verification has certain practical significance.