Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2006-07-18
2006-07-18
Nguyen, Tu M. (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
C060S274000, C060S276000, C060S277000
Reexamination Certificate
active
07076943
ABSTRACT:
The invention relates to a new method and system for optimizing the efficiency of an automotive catalytic converter by adjusting the engine air/fuel ratio based on estimates of the actual amount of oxidants stored in the catalyst. An available oxidant storage capacity of the catalyst is determined by establishing an oxidant set point location, i.e., a location in the catalyst about which the system controls the oxidant storage. The oxidant set point is established based on the temperatures of the different potential set point locations and the levels of deterioration of the different potential set point locations, as well as the oxidant storage capacity of the emission control device system.
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Bower, Jr. Stanley Larue
Carlstrom Kevin Ronald
Hahn Stephen L.
Lewis Donald James
Alleman Hall McCoy Russell & Tuttle LLP
Ford Global Technologies LLC
Lippa Alian J.
Nguyen Tu M.
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