Calculation for High-speed Electromagnet Property of Electronic-controlled Fuel Injection System of Diesel Engine

A calculation model for high-speed electromagnet property of electronic-controlled fuel injection system of diesel engine has been formulated with considering of leakage of magnetic flux and resistance of core. The results have been proved by relational tests. The results of an M490F type high-speed electromagnet show that in order to acquire good controlling effect, the resistance of core should not be ignored except it is much bigger than the solenoid resistance.