Control device for fuel injection device

A control device for a fuel injection device, the control device comprising a control unit for controlling the fuel injection device, which includes a valve body, a solenoid, a movable core to open the valve body, and a fixed iron core to attract the movable core,

• wherein the movable core includes a first movable core which has a first opposing surface that opposes the fixed iron core, the first opposing surface being attracted by the fixed iron core, and a second movable core which is formed separately from the first movable core and has a second opposing surface that opposes the fixed iron core, the second opposing surface being attracted by the fixed iron core,
• wherein the control unit is configured to control a drive voltage or a drive current being applied to the solenoid by decreasing the drive current from a maximum drive current before the valve body starts to open when only the second movable core is brought into contact with the fixed iron core, thereafter, decreasing the drive current to a first holding current smaller than the maximum drive current before the valve body starts to open, and then decreasing the drive current to a second holding current smaller than the first holding current before the valve body reaches a maximum stroke, and
• wherein the control unit is configured to control the drive current by supplying the maximum drive current to the solenoid until after the valve body starts opening, and then decreasing the drive current from the maximum drive current when the second movable core and the first movable core are brought into contact with the fixed iron core.