Power plants – Internal combustion engine with treatment or handling of... – Methods
Reexamination Certificate
2005-01-18
2005-01-18
Denion, Thomas (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
Methods
C060S276000, C060S285000
Reexamination Certificate
active
06843051
ABSTRACT:
A method and apparatus for controlling the operation of a “lean-burn” internal combustion engine in cooperation with an exhaust gas purification system having an emissions control device capable of alternatively storing and releasing NOxwhen exposed to exhaust gases that are lean and rich of stoichiometry, respectively, determines a performance impact, such as a fuel-economy benefit, of operating the engine at a selected lean or rich operating condition. The method and apparatus then enable the selected operating condition as long as such enabled operation provides further performance benefits.
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Bidner David K.
Surnilla Gopichandra
Denion Thomas
Nguyen Tu M.
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