| 摘要 |
PROBLEM TO BE SOLVED: To provide an injector control device which reduces a processing load of a microcomputer.SOLUTION: A control device 1 of an injector 3 comprises: a switching element 33 arranged between a power source 2 and a solenoid 16 of the injector; a microcomputer 18 which turns on and off the switching element with predetermined frequency f and a duty ratio D; current detection means 54 which detects actual current Ir flowing through the solenoid; and voltage detection means 37 which detects voltage VB of the power source. The microcomputer: calculates frequency reference value fb on the basis of predetermined inductance L, target current Ih and the detected voltage of the power source; turns on and off the switching element with the frequency reference value as the frequency; and corrects the frequency reference value on the basis of a difference ΔI between the actual current while the switching element is under on-off control and a determination value Ih3 set on the basis of the target current.SELECTED DRAWING: Figure 4 |
