Energy Efficient Design and Modification of an Automotive Exhaust Muffler for Optimum Noise, Transmission loss, Insertion loss and Back pressure: A Review

Abstract

This review paper showcases the various kinds of practical muffler designs available and attempted by several researchers and pioneers in muffler designing. The various design methodologies, design principles and lead factors that they have considered while designing is explained in this paper. The objective behind this study is to have a satisfactory knowledge about the various elements that comes into being when muffler designing is put forth to practice. The transmission loss and backpressure of the exhaust muffler, has been the key factor of consideration in most of the works done by the researchers as these have a direct impact on the engine performance, exhaust noise attenuation and finally fuel efficiency of the engine.

Exhaust Gas Pressure and Flow Velocity Analysis of the Conical Silencer High Performance Low Noise Exhaust Muffler

“…But now, with the advancements in design and researches done on optimal attenuation of noise, several other types are also introduced and used widely depending on the application. They are; baffle type, resonance type, wave cancellation, absorptive type, reactive type and combination type [8]. The conical silencer designed with reactive and absorptive type design.…”