REGENERATIVE CONTROL DEVICE OF FILTER BODY

摘要

PURPOSE: To precisely judge a blinding state of a filter body regardless of specifications of an engine and a driving condition of the engine. CONSTITUTION: Pressure sensors 8 are respectively provided at an inlet and an outlet of a filter body 5. A pressure ratio P1/P2 is found from exhaust inlet pressure P1 and exhaust outlet pressure P2 detected by each of the pressure sensors 8. At the time when the pressure ratio P1/P2 exceeds a specified value, it is judged that the filter body 5 is in a clogged state, exhaust particulates are burnt by electrifying and heating the filter body 5 and the filter body 5 is regenerated.