Technical Paper
The Effect of Piston Head Geometry on Natural Gas Direct Injection and Mixture Formation in a SI Engine with Centrally Mounted Single-Hole Injector
2011-12-15
2011-01-2448
Due to the vast resources of Natural Gas (NG), it has emerged as an alternative fuel for SI internal combustion engines in recent years. The need to have better fuel economy and less emission especially that of greenhouse gases has resulted in development of NG fueled engines. Direct Injection of Natural Gas into the cylinder of SI Internal Combustion Engines has shown great potential for improvement of performance and reduction of engine emissions especially CO2 and PM. Direct Injection of NG into the cylinder of SI Engines is rather new, thus the flow field phenomena and suitable configuration of injector and combustion chamber geometry has not been investigated completely. In this study a numerical model has been developed in AVL FIRE software to perform investigation of Direct Natural Gas Injection into the cylinder of Spark Ignition Internal Combustion Engines.
