Abstract
Combustion dynamics at the top dead center position of a spark ignition engine
Highlights
The greatest source of environmental air pollution in urban areas of the world is the automobiles powered by internal combustion engines (ICEs)
The pollutants are formed from non-ideal combustion processes which are prevalent in internal combustion engines and their formation depend on both the engine operating parameters as well as the type of fuel
▪ VOL. 45, No 4, 2017 oxidizer charge was consumed almost instantaneously as can be seen from there characteristics which are almost vertical. This shows a high likelihood of engine knock, operating a spark ignition engine with compression ratio, rc ≥ 15 should be avoided unless some specially treated fuels are used
Summary
The greatest source of environmental air pollution in urban areas of the world is the automobiles powered by internal combustion engines (ICEs). The focus of the present study is restricted to spark ignition engines with emphasis placed on combustion dynamics instead of overall engine performance or mechanical design of the automobile. In other to understand the combustion processes taking place in internal combustion engines, constantand variable-volume thermochemical reactors/bombs, steady-flow reactors, and rapid compression machines have been used to conduct exploratory studies of the combustion characteristics. These devices are designed in such a manner that the combustion processes of the fuel-air mixtures can be studied under several controlled internal combustion engine-like operating conditions. This study mimics the combustion processes taking place at the top dead center (TDC) position of a spark ignition engine
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