Patent ID: 7137247

Claim:
A regeneration apparatus for a particulate filter that collects a particulate in exhaust gas of an internal combustion engine, the regeneration apparatus comprising: a regeneration timing determining section that determines a timing at which an accumulated particulate is combusted to regenerate the particulate filter; and a regeneration mode controlling section that performs a control for a combustion of the particulate; the regeneration mode controlling section including: a first exhaust gas temperature raising section that raises a temperature of the engine exhaust gas to a first target temperature set at a temperature equal to or higher than a criterion temperature which provides a criterion of whether the particulate is combusted to regenerate the particulate filter when the engine falls in a first driving region; and a second exhaust gas temperature raising section that raises the engine exhaust gas temperature to a second target temperature set at a temperature lower than the criterion temperature when the engine falls in a second driving region different from the first driving region, and wherein the second target temperature is a temperature of the engine exhaust gas to combust the particulate whose quantity is approximately equal to a quantity of the particulate which flows into the particulate filter.