Method for reducing sensitivity for engine scavenging
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United States of America Patent
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Aug 11, 2015
Grant Date -
Jun 20, 2013
app pub date -
Dec 15, 2011
filing date -
Dec 15, 2011
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Abstract
A method for correcting a total cylinder air flow during scavenging by way of an oxygen sensor is disclosed. Additionally, cylinder trapped air amount and cylinder scavenging air amount are adjusted based on the corrected total cylinder air flow. The approach may reduce sensitivity between cylinder air flow estimates and fuel supplied for combustion.
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