EXHAUST EMISSION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of efficiently burning and removing the caught PM of a continuous regeneration type diesel particulate filter.

SOLUTION: This exhaust emission control device is provided with an oxidation catalyst 26 for oxidizing an exhaust gas component of an engine by catalyst action and a DPF (filter) 25 provided on the downstream side of the oxidation catalyst 26 to catch PM included in exhaust gas and performs post injection based on a temperature rise map set in advance when regenerating the DPF 25 forcedly. This device is provided with a DOC outlet temperature sensor 31a for detecting the outlet temperature of the oxidation catalyst 26 to increase a post injection amount in accordance with the rise of the detected outlet temperature of the oxidation catalyst 26 when regenerating the DPF 25 forcedly.

COPYRIGHT: (C)2006,JPO&NCIPI