ارزيابي ميزان چرخش جريان درون محفظه سيلندر يك موتور ديزل به وسيله دستگاه چرخش سنج

Swirl flow is the most important parameters on reducing soot in direct Diesel engines, due to reduction of third combustion phase time, causes to reduce third combustion phase time, causes to reduce total combustion time [2]. In this work swirl flow has been investigated in Diesel engineʹs cylinder. A swirl meter has been designed and prepared. By using the swirl meter. Swirl flow has been experimentally simulated for a range of engine speed, valve lifts and valve positions inside the cylinder. There is a good agreement between the results of this work and the previous works[5,6]. This unit has been designed in our research centers and our universities for the first time. Results show that in a direct inlet port, the optimum position of inlet valve improved 16% of swirl ratio.