Patent ID: 8127536

Claim:
An exhaust gas cleaning apparatus comprising: an exhaust gas particulate filter arranged in an exhaust passage of an internal combustion engine for capturing particulate matter in exhaust gas from the internal combustion engine; an oxidation catalytic converter arranged upstream of the exhaust gas particulate filter in the exhaust passage; and a regeneration control component configured to include a control to simultaneously increase one of an exhaust gas recirculation rate and a temperature of recirculated exhaust gas being recirculated to an air induction system of the internal combustion engine and decrease the one is not being increased of the exhaust gas recirculation rate and the temperature of the recirculated exhaust gas such that one of a temperature of the exhaust gas particulate filter and a concentration of nitrogen dioxide in the exhaust gas particulate filter is adjusted to a predetermined value for burning the particulate matter captured in the exhaust gas particulate filter by nitrogen dioxide generated by the oxidation catalytic converter while maintaining the other of the temperature of the exhaust gas particulate filter and the concentration of the nitrogen dioxide in the exhaust gas particulate filter.