Abstract
This paper includes designing an optimized muffler according to standard specifications and FSAE rules to provide optimum muffler and engine performance. The Designed Muffler is an advancement of the KTM 390 stock muffler design and is designed with accordance to FSAE competition rules, as the muffler is practically used for the competition. According to FSAE rules, muffler noise should not exceed 110 dB. In the initial stages, practical KTM muffler study was a must which included ripping a stock KTM 390 muffler for studying and solid modelling. The modelling of the muffler is done in Ricardo WaveBuild3D software. Iterations through Orthogonal Array method are done on its various factors and simulated in Ricardo Wave Build software. This work studies the performance of different geometries using Ricardo Wave Build by analyzing the torque curve, power curve, Transmission loss etc. Later was followed by a modified design in SolidWorks and CFD was done on the model to check backpressure. This paper consists of background about the work, which includes the introduction of the muffler, types of the muffler, information about the model, procedure of simulation set up and results of the simulations. The designed muffler is manufactured, tested for the Formula Student Car.
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