• Gurav Pranay Mohan.
• Harkal Namdeo Pralhad.
• Tandalekar Rohit Ravindra
• Kshirsagar Sunil Uttam
• Prof S.A.Deshmukh.

In automobile design of muffler is a challenging task. During the design of muffler it is essential to maintain engine efficiency and damp acoustic sound. IC engine muffler is used to suppress acoustic pulse which is spreading along the exhaust system and reduce back pressure to meet regulation and standard. Back pressure is major aspect which is affect engine efficiency. In recent competitive world, all to improve focus to improve engine efficiency by reducing weight, backpressure. Traditionally reactive and absorptive muffler is used reactive and absorptive muffler. In reactive muffler suppress a sound but produce back pressure and in absorptive not produce backpressure but suppress sound. Therefore in this paper we are going to develop a muffler for optimum flow which avoid a that problem

Transmission losses, back pressure, muffler design.

"Optimization and Passive Noise Control for Six Cylinder Diesel Engine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.268-271, February-2019, Available :http://www.jetir.org/papers/JETIRAE06067.pdf

"Optimization and Passive Noise Control for Six Cylinder Diesel Engine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp268-271, February-2019, Available at : http://www.jetir.org/papers/JETIRAE06067.pdf