Technical Paper
Reduction of Emissions and Noise Variations by Adjustment of Fuel Injection Quantity
2019-10-11
2019-28-0002
Fuel injection system is a very sensitive structure deciding the optimum quantity of fuel to be injected for combustion process with acceptable accuracy. Learning of fuel quantity with respect to injection type, duration, number of injections requires proper correction values in order to reduce the variation which would result in dissimilar emissions and performance. Deviation of injection quantities are inevitable due to the variations in production tolerance of the injectors. This study focuses on the maximum reduction in fuel quantity which avoids deviation of soot emissions with three different sets of injectors statistically deviating from the ideal pilot fuel quantity. Three sets of injectors deviating from the mean value were chosen and named as Min sample, Mean sample and Max sample. Min sample was with lower injection quantity than the actual and max sample was with higher injection quantity than actual quantity.