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Design and Optimization of Muffler for Manufacturing

K.Suganeswaran,Dr. R.Parameshwaran, S.Amirthamani, D.Palanimohan

The main purpose of a muffler in an automobile is to reduce the engine noise. An automotive muffler is designed and modified to achieve attenuation and back pressure targets. Attenuation and back pressure characteristic of base muffler is altered by changing its internal configuration. The target value was set at the time of conceptual stage and to obtain these targets, the muffler internal construction is modified. The targeted value is a compromise between the transmission loss and the backpressure. CAE tools are used for simulating the environment to achieve targeted TL(Transmission Loss) and back pressure. Experimental test have been conducted to check and correlate with CAE results in order to evaluate the effect of muffler internal construction on both TL and backpressure.