Injection control apparatus

An injection control apparatus, comprising:

• an injector configured to inject fuel into a combustion chamber of an internal combustion engine;
• a drive circuit including a battery, a booster circuit configured to boost electric power from the battery, and an electric current supply circuit configured to supply drive current to the injector by using the electric power boosted by the booster circuit;
• and
• a controller configured to control the drive circuit, wherein
• the controller includes a processor and a memory coupled to the processor, and is configured to perform:
• setting a target number of injections and a target injection timing per a combustion cycle of the internal combustion engine based on an operating condition of the internal combustion engine;
• determining whether a first interval from a valve opening timing of a first injection to a valve opening timing of a second injection is equal to or longer than a first threshold value and whether a second interval from the valve opening timing of the second injection to a valve opening timing of a third injection is equal to or longer than a second threshold value based on the target number of injections and the target injection timing, the first injection, the second injection, and the third injection being three consecutive injections in one single combustion cycle or two consecutive combustion cycles;
• and
• reducing the target number of injections when it is determined that the first interval is shorter than the first threshold value and the second interval is shorter than the second threshold value.