Patent ID: 7677028

Claim:
A particulate trap regeneration temperature control system, comprising: a particulate trap configured to remove one or more types of particulate matter from an exhaust flow of an engine; a heating system configured to increase the temperature of the particulate trap; a controller configured to control operation of the heating system during execution of a thermal regeneration event of the particulate trap by: effectuating a plurality of temperature increases and a plurality of temperature holds, including a first temperature increase of the particulate trap at a first predetermined rate up to a first predetermined temperature; a first temperature hold by maintaining the temperature of the particulate trap at a predetermined temperature greater than or equal to the first predetermined temperature for a first predetermined amount of time; a second temperature increase of the particulate trap at a second predetermined rate to a second predetermined temperature which is greater than the predetermined temperature at the first temperature hold, wherein the first predetermined rate is between ten and fifty times faster than the second predetermined rate; and a second temperature hold by maintaining the temperature of the particulate trap at the second predetermined temperature for a second predetermined amount of time.