Cummins Inc.

Cristian Aldana Zambrano

Josh S Shao

Michael J McGuire

An apparatus includes a stationary conditions circuit structured to received information indicative of a stationary condition of a vehicle having an exhaust aftertreatment system; an engine circuit structured to cause an elevated operating mode in response to the detection of the stationary condition; and a nitrous oxide (NOx) monitor reset circuit. The NOx monitor reset circuit may be structured to: receive vehicle operation data indicative of an enable condition for a NOx monitor reset process; in response to the enable condition, receive NOx data indicative of a NOx amount exiting the exhaust aftertreatment system as part of the NOx monitor reset process; compare the NOx data to an estimated NOx amount; and in response to the comparison, selectively diagnose the exhaust aftertreatment system as one of a healthy and a degraded exhaust aftertreatment system.

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Columbus, IN, United States of America

Cristian Aldana Zambrano