Title :
Optimization of Muffler of Engines by Computers and Analysis Method
Author :
Zhou, Yi ; Chen, Qinghua
Abstract :
The low frequent noise of engine exhaust system is the main component of exhaust noise. Whether decreasing the noise of exhaust system or not has became a critical indicator of evaluating acoustic characteristics of mufflers. In order to reduce the noise of the engine exhaust system, this paper presents an improved muffler model, comparing the transmission loss of both the former muffler and the modified muffler. Then it establishes a coupled model with the engine and the muffler to analyze the noise of the engine exhaust system. Simulation results show that the performance of the modified muffler is superior to the former muffler.
Keywords :
acoustic signal processing; exhaust systems; flow simulation; internal combustion engines; mechanical engineering computing; signal denoising; 1D unstable flow simulation software; AVL Boost; acoustic characteristics; automotive industry; engine exhaust system; exhaust system noise; low frequent noise; muffler optimization; noise analysis; pollution reduction; transmission loss; Acoustics; Engines; Equations; Exhaust systems; Mathematical model; Noise; Propagation losses; AVL BOOST; Diesel engine; Muffler; Simulation;
Conference_Titel :
Industrial Control and Electronics Engineering (ICICEE), 2012 International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4673-1450-3
DOI :
10.1109/ICICEE.2012.496
