To improve accuracy of injection quantity of main injection at a time of multiple injection by suppressing fluctuation (waviness) of main injection quantity.

Irregular fluctuation of actual main injection quantity (waviness) in relation to main injection command injection quantity receiving influence of pressure pulsation generated by executing pre-injection twice or more can be suppressed by making interval between pre-injection and main injection correspond to a operation condition of an engine and number of multiple injection to weaken influence of waviness of actual main injection quantity in relation to the main injection command injection quantity caused by pressure pulsation of fuel generated by executing pre-injection twice or more at a time of multiple injection in which twice or more pre-injection is executed before main injection. Consequently, accuracy of injection quantity of main injection at the time of multiple injection can be improved.

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