Simulation a Natural Gas Direct Injection Stratified Charge with Spark Ignition Engine

The purpose of present paper is simulation a direct injection stratified charge natural gas engine. The KIVA-۳V code was used for gaseous fuel injection simulation. Compression and expansion stroke of engine cycle is simulated using KIVA-۳V code. In cylinder fuel equivalence ratio distribution criterion is used for studying mesh independency. The results show that ۵۵۰۰۰۰ cells number is sufficient. The amount of NO emission in the end of closed cycle simulation was found equal ۶۷۴.۸۷۵ ppm and In cylinder pressure versus engine crank angle degree was simulated that maximum value found in ۳۶۶ oCA that equal to ۲۷.۳۲۲۲ bar.