Variable Density Distribution of CNG Jet Injected at Small Injection Pressure

The complicated In-cylinder varying density field behavior of gaseous fuels makes the air fuel mixing process difficult to study. This problem urges to find out the injected gaseous fuel density distribution. This paper tries to find out the normalized injected CNG density distribution at small injection pressure. Background oriented schlieren and image processing techniques are implemented to find the variable density distribution on a constant volume chamber during injection.