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公开(公告)号：US11598239B2
公开(公告)日：2023-03-07
申请号：US17707312
申请日：2022-03-29
申请人： CUMMINS INC.
摘要： 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.
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公开(公告)号：US10995647B2
公开(公告)日：2021-05-04
申请号：US15776342
申请日：2016-11-15
申请人： Cummins, Inc.
发明人： Adam W. Kidd , Michael Haas
摘要： 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.
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3.发明申请公开(公告)号：US20200300190A1
公开(公告)日：2020-09-24
申请号：US16871659
申请日：2020-05-11
申请人： Cummins Inc.
摘要： 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.
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公开(公告)号：US10711676B2
公开(公告)日：2020-07-14
申请号：US16069106
申请日：2017-01-12
申请人： Cummins, Inc.
摘要： 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.
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公开(公告)号：US20150361846A1
公开(公告)日：2015-12-17
申请号：US14302338
申请日：2014-06-11
申请人： Cummins, Inc.
CPC分类号： F01N3/208 , F01N9/005 , F01N2560/026 , F01N2900/0404 , F01N2900/0411 , F01N2900/0601 , F01N2900/1402 , F01N2900/1411 , F01N2900/1602 , F01N2900/1621 , Y02T10/24 , Y02T10/47
摘要： 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.
摘要翻译： 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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6.发明申请SYSTEMS AND METHODS FOR NOx REDUCTION AND AFTERTREATMENT CONTROL USING PASSIVE NOx ADSORPTION 有权使用无源NOx吸附进行NOx还原和后处理控制的系统和方法公开(公告)号：US20150247437A1
公开(公告)日：2015-09-03
申请号：US14453169
申请日：2014-08-06
申请人： Cummins Inc.
CPC分类号： F01N3/2066 , F01N3/035 , F01N3/103 , F01N3/106 , F01N3/2006 , F01N3/2033 , F01N13/009 , F01N2610/02 , Y02T10/24 , Y02T10/26
摘要： Systems and methods for managing aftertreatment systems that include passive NOx adsorption devices and SCR catalyst elements are disclosed. Temperature generation devices upstream of the passive NOx adsorption devices facilitate control of the aftertreatment systems to improve fuel economy and NOx conversion efficiency.
摘要翻译： 公开了用于管理包括被动式NOx吸附装置和SCR催化剂元件的后处理系统的系统和方法。 无源NOx吸附装置上游的温度发生装置便于后处理系统的控制，以提高燃料经济性和NOx转化效率。
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公开(公告)号：US11798325B2
公开(公告)日：2023-10-24
申请号：US17247383
申请日：2020-12-09
申请人： Cummins Inc.
发明人： Jeffrey Diwakar Abraham , Marcela Schmalz de Bernardi , Avra Brahma , Timothy J. Greis , Michael Haas , Gregory H. Henderson , Adam W. Kidd , Lyle E. Kocher , Krithika Mohan , Daniel J. Smith , Christophe Tricaud , Ananth Vemuri , Easwar Yarrabikki
CPC分类号： G07C5/0808 , B60R16/0234 , F02B37/24 , F02M26/02 , F02M35/10222 , G07C5/008 , G07C5/085 , G07C5/0816
摘要： A system includes a controller configured to store a relationship matrix of a plurality of diagnostic estimators and a plurality of failure modes, each failure mode represents a type of failure that can occur with (i) a sensor or (ii) a vehicle component of a vehicle system, each diagnostic estimator is associated with a respective subset of the failure modes, each respective subset defines a control volume within the vehicle system that contains at least one of (i) one or more sensors or (ii) one or more vehicle components; store a healthy diagnostic vector regarding nominal operational parameters of the vehicle system; acquire diagnostic information regarding current operational parameters of the vehicle system to generate an error diagnostic vector; divide the error diagnostic vector by the healthy diagnostic vector to generate a ratio diagnostic vector; multiply the ratio diagnostic vector with the relationship matrix to generate a value for each failure mode.
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公开(公告)号：US11440528B2
公开(公告)日：2022-09-13
申请号：US16514753
申请日：2019-07-17
申请人： Cummins Inc.
发明人： Archit N. Koti , Apurva A. Chunodkar , Arun Prakash Thunga Gopal , Feng Liu , Kenneth M. Follen , Michael Haas , Pinak Jayant Tulpule , Vivek A. Sujan
IPC分类号： B60W20/10 , F01N3/20 , F02D41/02 , B60W10/06 , B60W10/08 , B60W10/30 , B60W30/18 , B60W50/00 , B60K6/24
摘要： A vehicle comprises an aftertreatment system configured to reduce constituents of an exhaust gas. The vehicle also includes a controller configured to determine a predicted load on the vehicle during a route, and adjust at least one of a temperature of the aftertreatment system or an amount of a reductant inserted into the aftertreatment system based on the predicted load.
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公开(公告)号：US11333054B2
公开(公告)日：2022-05-17
申请号：US16497438
申请日：2018-03-27
申请人： CUMMINS INC.
摘要： An exhaust aftertreatment device includes a housing defining an inlet and an outlet. A plurality of first substrate layers are positioned within the housing in fluid receiving communication with the inlet. The plurality of first substrate layers define a first flow direction, and the plurality of first substrate layers comprise a passive NOx adsorber washcoat. A plurality of second substrate layers are positioned within the housing with the first and second substrate layers being layered in alternating order. The plurality of second substrate layers define a second flow direction perpendicular to the first flow direction, and the plurality of second substrate layers comprise a selective catalytic reduction washcoat. A connecting passage is in fluid receiving communication with the plurality of first substrate layers and in fluid providing communication with the plurality of second substrate layers.
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公开(公告)号：US20210254534A1
公开(公告)日：2021-08-19
申请号：US17246893
申请日：2021-05-03
申请人： Cummins, Inc.
发明人： Adam W. Kidd , Michael Haas
IPC分类号： F01N11/00
摘要： A method includes: interpreting first oxygen data acquired by a first nitrous oxide (NOx) sensor indicative of a first amount of oxygen in an exhaust flow at a location in or proximate to an exhaust aftertreatment system, wherein the exhaust aftertreatment system is in exhaust gas receiving communication with an engine; estimating an amount of oxygen in the exhaust flow entering the exhaust aftertreatment system from the engine based on engine operation data; and, determining that the NOx sensor is faulty based on determining that a difference between the first amount of oxygen and the estimated amount of oxygen is greater than a threshold value.
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