Invention Grant
- Patent Title: Systems and methods for ultra-low NOx cold start warmup control and fault diagnosis
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Application No.: US16829679Application Date: 2020-03-25
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Publication No.: US11428181B2Publication Date: 2022-08-30
- Inventor: Avra Brahma , Yongsoon Yoon
- Applicant: Cummins Inc.
- Applicant Address: US IN Columbus
- Assignee: Cummins Inc.
- Current Assignee: Cummins Inc.
- Current Assignee Address: US IN Columbus
- Agency: Foley & Lardner LLP
- Main IPC: F02D41/06
- IPC: F02D41/06 ; F01N11/00

Abstract:
Systems and apparatuses include an aftertreatment system including a catalyst, and a controller coupled to the aftertreatment system. During a warmup period for an engine coupled to the catalyst, the controller is configured to determine a value of a catalyst heating metric indicative of an amount of emissions produced per unit of exhaust energy based on information received from the engine and the aftertreatment system, and control at least one of a turbocharger, a fuel injection system, or an Exhaust Gas Recirculation (EGR) system to reach a target value of the catalyst heating metric.
Public/Granted literature
- US20210301743A1 SYSTEMS AND METHODS FOR ULTRA-LOW NOx COLD START WARMUP CONTROL AND FAULT DIAGNOSIS Public/Granted day:2021-09-30
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