Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1999-03-05
2000-10-31
Walberg, Teresa
Power plants
Internal combustion engine with treatment or handling of...
Methods
60285, F01N 300
Patent
active
061384526
ABSTRACT:
An adaptive catalytic monitoring method for an engine having two engine banks each coupled to one of two catalytic converters uses first and second exhaust gas oxygen sensors respectively upstream and downstream of one catalytic converter. Third and fourth exhaust gas oxygen sensors are respectively coupled upstream and downstream of the other catalytic converter. Switch ratios are determined for each of the engine banks based the switching ratios of each upstream and downstream pair of exhaust gas oxygen sensors, with the switch ratio being adjusted by an adjustment gain that is a function of airflow and a catalytic converter characteristic. A combination of the adjusted switch ratios is used to determine overall catalytic converter system performance.
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Davey Christopher Kirk
Jentz Robert Roy
Jerger Robert Joseph
Kluzner Michael Igor
Dahbour Fadi H.
Ford Global Technologies Inc.
Russell John D.
Walberg Teresa
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