Numerical Model of Combustion Noise generation in Combustion Engines

Abstract

Noise and vibrations emitted from the structure of a combustion engine has contributions due to combustion process, motion of parts, flow and exhaust etc. Combustion based noise has major contributions in noise emissions, hence it is important to analyze the combustion occurring inside the combustion chamber as well as overall structure of engine to improve performance of engines on various NVH benchmarks.The presented work discusses a numerical model of combustion-based noise. Impact power of combustion, transmission and decay process of noise were analyzed. The presented results may be used to choose suitable design of combustion chamber that has better performance on NVH aspects.