IGNITION COIL UNIT COLLECTING OPERATING DATA

An ignition coil unit (1) includes: an ignition circuit (10) including a primary coil (11) and a secondary coil (12); a power generator (20) including a generator coil (21); a controller (30) configured to control an ignition timing of the ignition circuit (10) by an input signal generated by an induced voltage of the generator coil (21); and a sensor (2) configured to input load information to the controller (30). The controller (30) includes a memory (34) configured to store working time information which corresponds to operating information based on the input information and the load information, as matrix data composed of the operating information, the load information and time data.