Exhaust gas purifier

Details Exhaust gas purifier Exhaust gas purifier

2006-07-25

2006-07-25

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S285000, C060S299000

Reexamination Certificate

active

07080507

ABSTRACT:
In order to improve the decrease of the catalytic action and the deterioration of the exhaust purification performance, a catalyst installed in the exhaust pipe of an engine and a secondary air pump for supplying secondary air into the exhaust pipe are provided, and the secondary air pump is operated even after the engine has stopped.

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Shinji Nakagawa, et al., “A New Air-Fuel Ratio Feed Back Control for ULEV/SULEV Standard,” SAE Technical Paper Series, 2002-01-0194.

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