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    Crossflow PNA-SCR aftertreatment device
    2.
    发明授权
    Crossflow PNA-SCR aftertreatment device 有权

    公开(公告)号：US11598239B2

    公开(公告)日：2023-03-07

    申请号：US17707312

    申请日：2022-03-29

    Applicant: CUMMINS INC.

    Inventor： Lars Krister Henrichsen ,  Krishna P. Chilumukuru ,  Michael Haas ,  Matthew L. Anderson

    IPC: F01N3/20 ,  B01D53/94 ,  F01N3/022 ,  F01N3/08 ,  F01N3/28 ,  F01N13/00

    Abstract: An exhaust aftertreatment system includes a cross-flow selective catalytic reduction catalyst. The cross-flow selective catalytic reduction catalyst includes a housing and a substrate assembly. The substrate assembly includes a plurality of first substrate layers defining a plurality of first flow channels and a plurality of second substrate layers defining a plurality of second flow channels. The exhaust aftertreatment system includes a passive NOx adsorber. The passive NOx adsorber includes a housing. The housing includes an inlet in exhaust gas receiving communication with the plurality of first flow channels of the cross-flow selective catalytic reduction catalyst. The housing includes an outlet in exhaust gas providing communication with the plurality of second flow channels of the cross-flow selective catalytic reduction catalyst. The passive NOx adsorber includes a substrate positioned in the housing. The substrate includes a passive NOx adsorber washcoat.

    Systems and methods for using oxygen to diagnose in-range rationality for NOx sensors
    3.
    发明授权
    Systems and methods for using oxygen to diagnose in-range rationality for NOx sensors 有权

    公开(公告)号：US10995647B2

    公开(公告)日：2021-05-04

    申请号：US15776342

    申请日：2016-11-15

    Applicant: Cummins, Inc.

    Inventor： Adam W. Kidd ,  Michael Haas

    IPC: F01N11/00 ,  F01N9/00

    Abstract: An apparatus includes an exhaust analysis circuit and a sensor diagnostics circuit. The exhaust analysis circuit is structured to interpret first oxygen data acquired by a first sensor indicative of a first amount of oxygen in an exhaust flow at a first location along an exhaust aftertreatment system, and interpret second oxygen data acquired by a second sensor indicative of a second amount of oxygen in the exhaust flow at a second location along the exhaust aftertreatment system. The sensor diagnostic circuit is structured to determine at least one of the first sensor and the second sensor are faulty based on the first amount of oxygen and the second amount of oxygen differing more than a threshold value.

    METHOD, ENGINE, AND CONTROL SYSTEM FOR CONTROLLING SOOT LOADING OF EXHAUST GAS AFTERTREATMENT COMPONENTS
    4.
    发明申请
    METHOD, ENGINE, AND CONTROL SYSTEM FOR CONTROLLING SOOT LOADING OF EXHAUST GAS AFTERTREATMENT COMPONENTS 审中-公开

    公开(公告)号：US20200300190A1

    公开(公告)日：2020-09-24

    申请号：US16871659

    申请日：2020-05-11

    Applicant: Cummins Inc.

    Inventor： Jeffrey David Selwyn Diwakar Abraham ,  Ananth Vemuri ,  Michael Haas ,  Adam W. Kidd

    IPC: F02D41/02 ,  F01N3/023 ,  F01N9/00 ,  B01D46/46 ,  B01D46/44 ,  B01D46/00

    Abstract: A method, system, and apparatus relating to operating an internal combustion engine include steps or features for determining a performance threshold of a particulate filter disposed in an exhaust gas flow of the engine having a set time interval between regeneration events of the particulate filter; determining a rate at which the particulate filter is reaching the performance threshold; and controlling an exhaust gas characteristic to control the rate so that the performance threshold is reached at or just before an end of the time interval. In an embodiment, there are steps or features for interpreting a filter condition of the particulate filter; determining a particulate matter load rate of the filter as a function of the condition; determining a limit of an exhaust gas characteristic based on the load rate; and controlling engine operation to control the exhaust gas characteristic to satisfy the limit.

    System and method for determining reductant delivery performance
    5.
    发明授权
    System and method for determining reductant delivery performance 有权

    公开(公告)号：US10711676B2

    公开(公告)日：2020-07-14

    申请号：US16069106

    申请日：2017-01-12

    Applicant: Cummins, Inc.

    Inventor： Bharath Sundar ,  Apurva Arvind Chunodkar ,  Michael Haas ,  Astha Kukreja

    IPC: F01N3/00 ,  F01N3/20 ,  F01N11/00 ,  F01N3/10 ,  F01N13/00

    Abstract: An apparatus includes a pump, a delivery mechanism in fluid communication with the pump, and a controller communicatively coupled to the pump and the delivery mechanism. The controller is structured to interpret, via a pump diagnostic circuit, first and second pump parameters indicative of first and second pump rates, interpret, via a dosing diagnostic circuit, first and second dosing parameters indicative of at least one of (i) first and second reductant flows or (ii) first and second injector characteristics, determine, via a delivery diagnostic circuit, a delivery status based, at least in part, on the interpretation of the first and second pump parameters and the first and second dosing parameters, and generate, via the delivery diagnostic circuit, a status command indicative at least one of an under-restricted delivery mechanism or an over-restricted delivery mechanism in response to the determination of the delivery status.

    System Variation Adaption for Feed-Forward Controller
    6.
    发明申请
    System Variation Adaption for Feed-Forward Controller 有权
    前馈控制器的系统变化适应

    公开(公告)号：US20150361846A1

    公开(公告)日：2015-12-17

    申请号：US14302338

    申请日：2014-06-11

    Applicant: Cummins, Inc.

    Inventor： Michael Haas ,  Phanindra V. Garimella ,  Ming-Feng Hsieh

    IPC: F01N3/20 ,  F01N3/10 ,  F01N9/00

    CPC classification number: F01N3/208 ,  F01N9/005 ,  F01N2560/026 ,  F01N2900/0404 ,  F01N2900/0411 ,  F01N2900/0601 ,  F01N2900/1402 ,  F01N2900/1411 ,  F01N2900/1602 ,  F01N2900/1621 ,  Y02T10/24 ,  Y02T10/47

    Abstract: Methods for adapting system variation for an engine system having an after-treatment system. Measured characteristics of the after-treatment system may be used to predict a model value(s) that is compared to a measured value(s) of the after-treatment system to provide a comparison value. Information relating to high frequency uncertainties in characteristics of the after-treatment system are removed from the comparison value to provide an estimated system variation value. The estimated system variation value may then be used to adapt a system command of a controller. Further, information relating to high frequency uncertainties in characteristics of the after-treatment system may be used by a feed-back controller to determine high frequency adaptation values that may also be used to adjust the system command. The inclusion of the estimated system variation may eliminate reliance on the feed-back controller to provide system adjustments for both high and low frequency uncertainties.

    Abstract translation: 适用于具有后处理系统的发动机系统的系统变化的方法。 后处理系统的测量特征可以用于预测与后处理系统的测量值进行比较以提供比较值的模型值。 关于后处理系统的特性的高频不确定性的信息从比较值中除去，以提供估计的系统变化值。 然后可以使用估计的系统变化值来适应控制器的系统命令。 此外，与后处理系统的特性中的高频不确定性相关的信息可由反馈控制器用于确定也可用于调整系统命令的高频适配值。 包括估计的系统变化可以消除对反馈控制器的依赖，以提供高频和低频不确定性的系统调整。

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