REGENERATIVE HEATER OF DIESEL ENGINE PARTICULATE TRAP AND DIESEL ENGINE PARTICULATE TRAP USING THE SAME HEATER

摘要

A meshed plate-like heater is disposed between multi-layer cylindrical filters without contacting with the filters to constitute a DPF. The heater has a form in which strip-like electric conduction paths are arranged and developed side by side horizontally, and then made cylindrical such that the different electric resistance are set for the inlet portion, the outlet portion and the center portion so as to constitute a DPF 100 for regenerating the particulates. The regenerative heater realizes a uniform temperature distribution all over the regenerative heater within a range of from about 600.degree.C which is the self-burning temperature of the particulates to 1,000.degree.C which is the heat-resistance temperature of the filters, in 10 minutes after the start of regeneration.