Patent ID: 7104051
Filing Date: 2006-09-12
Classification: F01N,F02B,F02D,Y02T

Abstract:
1. An exhaust gas purification device for an internal-combustion engine, said device comprising: a particulate filter disposed in an exhaust system of the engine for trapping particulates contained in the exhaust gas; timing determining means for determining a regeneration timing to remove the particulates trapped by the particulate filter; intake air amount reducing means for reducing an intake air amount to be taken into the internal-combustion engine in response to the determination of the regeneration timing; combustion maintaining means for maintaining combustion in the engine in a desired condition in response to reduction of the intake air amount; and heating means for heating the particulate filter to regenerate the particulate filter; wherein said device is configured to supply unburned fuel into the exhaust gas when a predetermined time elapses after the heating means started to be activated.