Ignition control device

An ignition control device comprising:

• a main ignition circuit to generate a spark discharge to a spark plug by controlling energization of a primary coil of an ignition coil for an internal combustion engine;
• an energy supply circuit that supplies energy based on a discharge continuation signal which is a command value for continuing the spark discharge by controlling the energization of the primary coil during the spark discharge started by the operation of the main ignition circuit to supply a secondary current in the same direction as that used for a main ignition continuously in a secondary coil of the ignition coil;
• a secondary current command circuit for outputting a command value of the secondary current based on the secondary current command signal;
• and
• an ignition control unit for setting signal values of the secondary current command signal and the discharge continuation signal;
• wherein
• the ignition control unit sets the secondary current command signal so as to increase the secondary current when an engine speed of the internal combustion engine is higher compared to when the engine speed is lower, and sets the discharge continuation signal so as to shorten an energy supply period.