Regeneration controller for exhaust purification apparatus...

Details Regeneration controller for exhaust purification apparatus... Regeneration controller for exhaust purification apparatus...

2005-03-10

2010-11-23

Denion, Thomas E (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S285000, C060S297000, C060S311000

Reexamination Certificate

active

07836685

ABSTRACT:
A regeneration controller for preventing particulate matter from increasing when an exhaust purification apparatus is inactivated. The regeneration controller includes an ECU70for heating the exhaust purification apparatus and eliminating the particulate matter accumulated in the exhaust purification apparatus when an estimated accumulation amount is greater than a reference accumulation amount. The ECU70obtains the estimated accumulation amount by estimating the amount of particulate matter accumulated in the exhaust purification apparatus. An exhaust temperature sensor44detects the temperature of the exhaust purification apparatus. The ECU70intermittently decreases the air-fuel ratio of exhaust to heat the exhaust purification apparatus and perform burn-up heating for burning the particulate matter. The ECU70further prohibits burn-up heating when the temperature detected by an exhaust temperature sensor44decreases to a catalyst inactivation level.

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