Control device for internal combustion engine

A control device applied to a cylinder injection type of an internal combustion engine, comprising:

• at least one cylinder;
• an ignition plug having a spark generation part;
• and
• an injector having a movable valve and at least one injection hole, said injector injecting a fuel into said cylinder via said injection hole by a movement of said movable valve body such that the fuel spray including at least part of the fuel injected by said injector reaching directly said spark generation part,
• the control device comprising a control part configured to make said injector inject the fuel and make said spark generation part generate a spark for an ignition of the fuel at a predetermined ignition timing,
• wherein said control part is configured to control a disperse parameter for changing a degree of a spread of the fuel spray such that the maximum degree of the spread of the fuel spray under a state where an amount of the fuel adhering to said spark generation part at the ignition timing corresponds to a first amount, is smaller than the maximum degree of the spread of the fuel spray under a state where the amount of the fuel adhering to said spark generation part at the ignition timing corresponds to a second amount smaller than said first amount.