REGENERATOR FOR DIESEL PARTICULATE FILTER

摘要

PROBLEM TO BE SOLVED: To provide a regenerator for a diesel particulate filter (hereinafter referred to as 'DPF') having a simple structure and capable of judging regeneration start time with high precision. SOLUTION: This regenerator for DPF is provided with a pressure sensor mounted on the downstream end side of an exhaust system of an engine to detect a pressure on the inlet side of DPF, an atmospheric pressure sensor for detecting an atmospheric pressure, a rotary sensor for detecting the number of revolutions of the engine, a filter regenerating means for combusting and removing particulates caught by DPF, and a control means for inputting values detected by each sensor and storing a pressure loss threshold value map set in advance based on the number of revolutions of the engine and filter pressure loss. The control means calculates filter pressure loss based on the values detected by the pressure sensor and the atmospheric pressure sensor and operates the filter regenerating means when the calculated value exceeds a pressure loss threshold value in the pressure loss threshold value map corresponding to the value detected by the rotary sensor.