Correlation of combustion noise with ignition-timing in an IC engine

ABSTRACT

The need for development of a more efficient IC engine is always on the rise which can be related to oil being a non-renewable resource and its increasing carbon foot print causing global warming. In addition to the CO₂, there are more toxic pollutants such as NOx, CO and HC due to improper combustion. These demands have paved way for development of alternative fuel engines such as bio-diesel, bio-ethanol and hybrids. Still these engines need to optimise their combustion to get the best of both worlds. And for the purpose of optimisation there must be a means to measure and estimate the combustion characteristics. Thus analysing the combustion noise gives some insight into the performance of the engine.