Cylinder imbalance correction system and method
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United States of America Patent
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Nov 9, 2021
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N/A
app pub date -
Nov 18, 2019
filing date -
Nov 18, 2019
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Abstract
Systems and methods are provided for determining and correcting air/fuel imbalance between cylinders of an internal combustion engine. A deactivation strategy is determined and implemented. An evaluation is made of whether the engine is operating with an air/fuel imbalance between cylinders. When an imbalance is identified, an alternate deactivation strategy is implemented. Based on outcomes of the alternate deactivation strategy, a source cylinder of the air/fuel imbalance is identified, and fuel flow to the source cylinder is corrected.
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