Method and apparatus for managing an exhaust gas feedstream...

Details Method and apparatus for managing an exhaust gas feedstream... Method and apparatus for managing an exhaust gas feedstream...

2011-08-23

2011-08-23

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, C060S287000, C060S288000, C060S295000, C060S301000

Reexamination Certificate

active

08001768

ABSTRACT:
The disclosure sets forth operating a spark-ignition, direct-fuel injection internal combustion engine equipped with an exhaust aftertreatment system including a lean-NOx reduction catalyst upstream of a second converter element. The engine preferentially operates in one of a homogeneous charge combustion mode and a stratified charge combustion mode based upon temperature of the lean-NOx reduction catalyst. Exhaust gas flow is selectively diverted to the second converter element.

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patent: 2005/0222748 (2005-10-01), Naik et al.
WO 2001-063104, “System for Reducing NOx Transient Emission” Roth, Stanley, A., Aug. 30, 2001.

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