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    SYSTEMS AND METHODS FOR ULTRA-LOW NOx COLD START WARMUP CONTROL AND FAULT DIAGNOSIS
    1.
    发明申请
    SYSTEMS AND METHODS FOR ULTRA-LOW NOx COLD START WARMUP CONTROL AND FAULT DIAGNOSIS 有权

    公开(公告)号：US20220381193A1

    公开(公告)日：2022-12-01

    申请号：US17884473

    申请日：2022-08-09

    Applicant: Cummins Inc.

    Inventor： Avra Brahma ,  Yongsoon Yoon

    IPC: F02D41/06 ,  F01N11/00

    Abstract: Systems and apparatuses include an engine, an aftertreatment system including a catalyst, and a controller coupled to the aftertreatment system and the engine. During a warmup period for an engine, the controller determines a value regarding a mass flow rate of exhaust gas based on information received from at least one of the engine or the aftertreatment system. The controller receives a target value regarding the mass flow rate of the exhaust gas. The controller controls at least one of the engine, the aftertreatment system, or at least one component associated therewith to reach or attempt to reach the target value regarding the mass flow rate of the exhaust gas.

    Systems and methods for ultra-low NOx cold start warmup control and fault diagnosis
    3.
    发明授权
    Systems and methods for ultra-low NOx cold start warmup control and fault diagnosis 有权

    公开(公告)号：US11905904B2

    公开(公告)日：2024-02-20

    申请号：US17884473

    申请日：2022-08-09

    Applicant: Cummins Inc.

    Inventor： Avra Brahma ,  Yongsoon Yoon

    IPC: F02D41/06 ,  F01N11/00

    CPC classification number: F02D41/068 ,  F01N11/005 ,  F01N11/007

    Abstract: Systems and apparatuses include an engine, an aftertreatment system including a catalyst, and a controller coupled to the aftertreatment system and the engine. During a warmup period for an engine, the controller determines a value regarding a mass flow rate of exhaust gas based on information received from at least one of the engine or the aftertreatment system. The controller receives a target value regarding the mass flow rate of the exhaust gas. The controller controls at least one of the engine, the aftertreatment system, or at least one component associated therewith to reach or attempt to reach the target value regarding the mass flow rate of the exhaust gas.

    Air-fuel ratio imbalance diagnostic using exhaust manifold pressure
    7.
    发明授权
    Air-fuel ratio imbalance diagnostic using exhaust manifold pressure 有权

    公开(公告)号：US10539087B2

    公开(公告)日：2020-01-21

    申请号：US16136680

    申请日：2018-09-20

    Applicant: Cummins Inc.

    Inventor： Avra Brahma ,  Yongsoon Yoon

    IPC: F02D41/14 ,  F02D41/00 ,  F02D41/22 ,  F02D41/28

    Abstract: One embodiment is a method comprising operating an internal combustion engine system including multiple cylinders structured to combust a charge mixture and to output exhaust to an exhaust manifold, an electronic control system structured to control operation of the engine system and an exhaust manifold pressure (EMP) sensor structured to provide data to the electronic control system and performing an air-fuel ratio (AFR) imbalance diagnostic with the electronic control system. The AFR imbalance diagnostic may comprise the acts of processing the data to provide at least one output metric sample, determining an output metric statistic based on the at least one output metric sample, evaluating the output metric statistic relative to one or more predetermined criteria to identify an AFR imbalance condition, and providing an operator perceptible indication of the AFR imbalance condition.

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