CASE STUDY / “Ansys Mechanical software helped in analyzing the transmission loss — and Ansys CFD the backpressure — of a tractor muffler, which has shown good correlation with test results and helped in improving its performance.” Pawan Singh Senior Manager – CAE / Eicher Tractors (a unit of TAFE Motors and Tractors Limited, a wholly owned subsidiary of TAFE) Ansys + Eicher Tractors CASE STUDY /2 Ansys + Eicher Tractors // A muffler in the exhaust system of a tractor decreases the sound output while increasing the backpressure of the flowing exhaust gases. Transmission loss (TL) refers to the reduction in acoustic noise provided by a muffler and needs to be maximized (a higher TL means a quieter tractor). The engine must work against the backpressure; the higher the backpressure

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