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Exhaust gas recirculation wide range air fuel sensor for rich equivalence ratio target rationality diagnostic
Exhaust gas recirculation wide range air fuel sensor for rich equivalence ratio target rationality diagnostic
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机译:废气再循环宽范围空气燃料传感器,用于丰富的等价比目标合理性诊断
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摘要
A method for operating an exhaust gas recirculation system using rationality diagnostics for an automobile vehicle includes: estimating an oxygen storage content (OSC) of a catalytic converter of a vehicle; comparing an amount of oxygen stored in the catalytic converter to an OSC threshold; initiating a closed oxygen storage control (COSC) event for a predetermined one of multiple cylinders of an engine of a vehicle if the OSC threshold is met or exceeded, the COSC event targeting a rich air-fuel equivalence ratio (EQR) for the predetermined one of the multiple cylinders; and directing a fuel injector communicating with the predetermined one of the multiple cylinders to operate the predetermined one of the multiple cylinders at the rich EQR.
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