The numerical model of PA6 fuel injection system was set up by a special software. The influence of relative parameters on the fuel injection system are studied and the problems are pointed out, based on which the improvement programme are proposed. High injection pressure, fuel injection volume and atomization performance are especially analyzed, and the parameters before and after the improvement are compared. It shows that after the improvement, the highest injection pressure can reach 175 MPa,fuel injection volume remains about the same and the quality of atomization is enhanced.

Feasibility Study on Improving the Injection Pressure of PA6 Diesel Fuel Injection System