In an engine such as an engine for driving a pump or dynamo, in which a load increasing state does not appear as an accelerating state of rotation speed, it is intended to prevent the smoke emission in an abruptly load-increasing state, which might otherwise be caused by the suppression or interruption of an EGR quantity. The reaction may be carried out in the presence of a catalyst comprising a platinum group metal. A laser beam is irradiated to this pair to record the identification information. This in particular allows chip area to be saved, which leads to cost savings in manufacture and enables higher component density.