Patent ID: 7169364

Claim:
A particulate filter regenerating device comprising: a regeneration timing determining section configured to determine a regeneration timing to regenerate a particulate filter by combusting particulate that has accumulated in the particulate filter; an exhaust gas temperature increasing section configured to increase temperature of exhaust gas to regenerate the particulate filter; and a temperature rise restraining section configured to control at least one regeneration control device reduce a temperature rise amount of the exhaust gas caused by the exhaust gas temperature increasing section to a lower value based on a temperature of the particulate filter such that the control of the at least one regeneration control device results in at least one of the lower value of the temperature rise amount of the exhaust gas being less than it would be where the temperature of the particulate filter rises comparatively gradually, when the temperature of the particulate filter rises too rapidly during regeneration of the particulate filter by the exhaust gas temperature increasing section, and the lower value of the temperature rise amount of the exhaust gas being below a normal value that is used to bring the particulate filter to a target particulate filter temperature during regeneration.