A Kind of Common-Rail Electronical Controlled Diesel Fuel Injection System

This paper presents a research on electronical controlled fuel injection system of common-rail for diesel engine.The software and hardware were designed and experiments on the oil pump experimental platform were carried out to test the performance.From the experiments,we conclude that (1) The response speed of electronic controlled injector is fast.The minimal time of finishing an injection is 0.9 ms.(2) The injection timing and quantity of fuel injection can be adjusted with the working conditions.It can be controlled easily and the controllable range is large.(3) The whole system can be controlled accurately.The error of injection timing and width of fuel injection are less than 0.09 degree of the pump shaft.(4) The injection pressure can be adjusted within (0～45) MPa continuously.Consequently,the error is less than 5%.The system performance and technical data can meet with the function of diesel engine electronics controlled injection system.