초록 ▼

An apparatus and method for varying the duration of current levels of a fuel injection signal used in connection with an electronically controlled hydraulic actuator unit injector fuel system is disclosed. The apparatus and method varies the duration of the pull-in current of the fuel injection sign

An apparatus and method for varying the duration of current levels of a fuel injection signal used in connection with an electronically controlled hydraulic actuator unit injector fuel system is disclosed. The apparatus and method varies the duration of the pull-in current of the fuel injection signal delivered to the unit injector based on sensed engine parameters, which preferably include a sensed temperature of the engine and engine speed.

대표청구항 ▼

[ We claim:] [1.] An electronic control system for use with a compression ignition engine having a hydraulically actuated electronic unit fuel injector, said electronic control system comprising:an electronic controller electrically connected to said hydraulically actuated electronic unit fuel injec

[ We claim:] [1.] An electronic control system for use with a compression ignition engine having a hydraulically actuated electronic unit fuel injector, said electronic control system comprising:an electronic controller electrically connected to said hydraulically actuated electronic unit fuel injector;an engine temperature sensor producing a signal responsive to a temperature of said engine and communicating the signal responsive to a temperature of said engine to the controller; andwherein said electronic controller delivers a fuel injection signal to said hydraulically actuated electronic unit fuel injector, said fuel injection signal including a pull-in current duration time and a hold-in current duration time, said pull-in current duration time being a function of said signal responsive to the temperature of the engine.