Injector control device

Abstract

Provided is an injector control device which is capable of setting a preceding injection amount to a fuel injection amount that is less than a main injection amount, while suppressing situations where preceding injections executed prior to a main injection in multi-stage injection are eliminated. An injector control deviceincludes: an injection amount setting unitthat sets, as a total injection amount, a total of fuel injection amounts in multi-stage injection in a single cycle, and sets, as a preceding injection amount, a fuel injection amount in a preceding injection executed prior to a main injection in the multi-stage injection; an energization period setting unitthat sets an energization period of an injectorbased on the fuel injection amounts set by the injection amount setting unit; and an injector driving unitthat controls driving of the injectorbased on the energization period set by the energization period setting unit. The injection amount setting unitsets a fuel injection amount that is a predetermined percentage of the total injection amount as the preceding injection amount.