EXPERIMENTAL EFFECT OF NOISE AND BACKPRESSURE OF A (BAJAJ) TRICYCLIC EXHAUST SYSTEM

Abstract

The exhaust system being a critical system of any automotive vehicle plays a responsible role of improving the ride comfort of the tricyclic motor by attenuating the noise from the engine without deteriorating the engine performance. Due to exhaust noise reduction and the effect of backpressure as it affect the engine performance and invariably increase fuel consumption, there is need to examine the effect of backpressure and the sound level of a 3 wheel tricycle motor (BAJAJ) model to ascertain the level of noise and exhaust pressure that goes out through the muffler. Since tricycle are relatively new as compare to the other forms of public township transportation, the study of this exhaust characteristics and the profile of the flow through the complete exhaust is desirable. The main aim of this research is to conduct an experimental and computational fluid analysis of the effect of noise and backpressure of a tricyclic motor. In order to carry out the experiment, a tricyclic motor, triangular stand, liquid crystal display unit, personal computer, a wind sensor, temperature and pressure sensor, velocity, and sound sensors linked in a multi-channel system via a universal serial bus were used. The silencer geometry was modeled and flow simulation analysis of the exhaust system was analysed. The results of loading and unloading for backpressure 101483.5 bar and 982.97 bar respectively. The noise recorded was 78dB (A), which was more than the recommended sound level for urban night period.