An engine block has one or more cylinders with associated pistons connected to turn a crankshaft. A mark corresponding to 2T or more can be recorded, and write parameter information is recorded on a particular area of the information recording medium. The incorporation of a regrown contact layer allows for an undamaged lateral conduction path, and the fabrication of ohmic contacts. The lower block includes first and second lower pipe parts of the intake pipes. The intake air quantity correcting device regards a difference between the intake air quantity calculation value calculated in this way and an intake air quantity sensing value sensed with the airflow meter as a sensing error of the airflow meter and corrects the intake air quantity sensing value of the airflow meter based on the sensing error.