Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1992-11-03
1993-10-26
Cross, E. Rollins
Power plants
Internal combustion engine with treatment or handling of...
Methods
60276, 123674, 123688, 123691, F01N 320
Patent
active
052555127
ABSTRACT:
An air fuel ratio control system for an internal combustion engine having an electronic engine control module and an upstream and a downstream exhaust gas oxygen sensor positioned in the engine exhaust gas stream. A first feedback loop includes the upstream EGO sensor and an air fuel bias table. A second feedback loop includes a downstream EGO sensor and a trim signal to change the stored values in the air fuel bias table.
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Culbertson Thomas R.
Curran Judith M.
Hamburg Douglas R.
Abolins Peter
Cross E. Rollins
Ford Motor Company
May Roger L.
Moulis Thomas
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