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    Exhaust Gas Treatment System Including an Enhanced SCR Diagnostic Unit
    1.
    发明申请
    Exhaust Gas Treatment System Including an Enhanced SCR Diagnostic Unit 有权
    包括增强SCR诊断单元的废气处理系统

    公开(公告)号：US20150101310A1

    公开(公告)日：2015-04-16

    申请号：US14053054

    申请日：2013-10-14

    Applicant: GM Global Technology Operations LLC

    Inventor： Janean E. Kowalkowski ,  Amr Radwan ,  Sarah Funk

    IPC: F01N3/20

    CPC classification number: F01N3/2066 ,  F01N3/0885 ,  F01N3/106 ,  F01N3/208 ,  F01N9/002 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/02 ,  F01N2570/04 ,  F01N2900/1612 ,  F02D41/027 ,  F02D41/029 ,  F02D2200/0811 ,  Y02T10/24 ,  Y02T10/47

    Abstract: Embodiments of the invention include a method for performing diagnostics of a selective catalytic reduction (“SCR”) device in an exhaust gas treatment system of an internal combustion engine. The method includes monitoring an amount of sulfur in the SCR device of the exhaust treatment system and monitoring, by an SCR diagnostics module, an efficiency of the SCR device and indicating when the efficiency of the SCR device falls below an efficiency diagnostics threshold. Based on determining that the amount of sulfur in the SCR device is above a first threshold, the method includes disabling an operation of the SCR diagnostics module.

    Abstract translation: 本发明的实施例包括在内燃机的废气处理系统中执行选择性催化还原（SCR）装置的诊断的方法。 该方法包括监测排气处理系统的SCR装置中的硫含量，并由SCR诊断模块监测SCR装置的效率，并指示SCR装置的效率何时降低到效率诊断阈值以下。 基于确定SCR装置中的硫含量高于第一阈值，该方法包括禁用SCR诊断模块的操作。

    SYSTEM AND METHOD FOR CONTROLLING DOSING IN SELECTIVE CATALYTIC REDUCTION CATALYST
    3.
    发明申请
    SYSTEM AND METHOD FOR CONTROLLING DOSING IN SELECTIVE CATALYTIC REDUCTION CATALYST 有权
    用于控制选择性催化还原催化剂剂量的系统和方法

    公开(公告)号：US20150252709A1

    公开(公告)日：2015-09-10

    申请号：US14197954

    申请日：2014-03-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Min Sun ,  Justin Adam Shetney ,  Amr Radwan

    IPC: F01N3/20

    CPC classification number: F01N3/208 ,  F01N13/0093 ,  Y02T10/24

    Abstract: An engine assembly includes an exhaust system having a first SCR catalyst, a second SCR catalyst in fluid communication with the first SCR catalyst, and an injector configured to inject reductant into the exhaust system. A controller is configured to estimate a first amount of ammonia stored in the first SCR catalyst and to estimate a second amount of ammonia stored in the second SCR catalyst. The controller is operatively connected to the injector and configured to control the amount of reductant injected by the injector. The controller controls the injector based on the first amount, the second amount, and a temperature of a substrate disposed in the second SCR catalyst.

    Abstract translation: 发动机组件包括具有第一SCR催化剂，与第一SCR催化剂流体连通的第二SCR催化剂的排气系统和被配置为将还原剂注入到排气系统中的喷射器。 控制器被配置为估计存储在第一SCR催化剂中的第一量的氨并估计存储在第二SCR催化剂中的第二量的氨。 控制器可操作地连接到喷射器并且被配置为控制由喷射器喷射的还原剂的量。 控制器基于第一量，第二量和设置在第二SCR催化剂中的衬底的温度来控制喷射器。

    Exhaust gas aftertreatment desulfurization control
    4.
    发明授权
    Exhaust gas aftertreatment desulfurization control 有权
    废气后处理脱硫控制

    公开(公告)号：US08617495B1

    公开(公告)日：2013-12-31

    申请号：US13671889

    申请日：2012-11-08

    Applicant: GM Global Technology Operations LLC

    Inventor： Sarah Funk ,  Rebecca J Darr ,  Paul Jasinkiewicz ,  Amr Radwan

    IPC: B01D53/94 ,  F01N3/18 ,  G05B13/00

    CPC classification number: B01D53/9477 ,  B01D53/96 ,  B01D2255/102 ,  B01D2255/207 ,  B01D2255/50 ,  B01D2257/302 ,  F02D41/028 ,  F02D2200/0802 ,  F02D2200/0818

    Abstract: An exhaust gas treatment system for an internal combustion engine to control desulfurization of at least one aftertreatment device is provided. The exhaust gas treatment system includes a desulfurization mode trigger module, a desulfurization control module, and an interrupt module. The desulfurization mode trigger module is configured to set a desulfurization request based on one or more trigger conditions. The desulfurization control module is configured to control desulfurization of at least one aftertreatment device based on the desulfurization request. The interrupt module is configured to interrupt the desulfurization of at least one aftertreatment device based on an interrupt condition.

    Abstract translation: 提供了一种用于控制至少一个后处理装置的脱硫的内燃机的废气处理系统。 废气处理系统包括脱硫模式触发模块，脱硫控制模块和中断模块。 脱硫模式触发模块被配置为基于一个或多个触发条件来设置脱硫请求。 脱硫控制模块被配置为基于脱硫请求来控制至少一个后处理装置的脱硫。 中断模块被配置为基于中断条件来中断至少一个后处理装置的脱硫。

    System and method for controlling dosing in selective catalytic reduction catalyst
    5.
    发明授权
    System and method for controlling dosing in selective catalytic reduction catalyst 有权
    用于控制选择性催化还原催化剂中配料的系统和方法

    公开(公告)号：US09309797B2

    公开(公告)日：2016-04-12

    申请号：US14197954

    申请日：2014-03-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Min Sun ,  Justin Adam Shetney ,  Amr Radwan

    IPC: F01N3/00 ,  F01N3/20

    CPC classification number: F01N3/208 ,  F01N13/0093 ,  Y02T10/24

    Abstract: An engine assembly includes an exhaust system having a first SCR catalyst, a second SCR catalyst in fluid communication with the first SCR catalyst, and an injector configured to inject reductant into the exhaust system. A controller is configured to estimate a first amount of ammonia stored in the first SCR catalyst and to estimate a second amount of ammonia stored in the second SCR catalyst. The controller is operatively connected to the injector and configured to control the amount of reductant injected by the injector. The controller controls the injector based on the first amount, the second amount, and a temperature of a substrate disposed in the second SCR catalyst.

    Abstract translation: 发动机组件包括具有第一SCR催化剂，与第一SCR催化剂流体连通的第二SCR催化剂的排气系统和被配置为将还原剂注入到排气系统中的喷射器。 控制器被配置为估计存储在第一SCR催化剂中的第一量的氨并估计存储在第二SCR催化剂中的第二量的氨。 控制器可操作地连接到喷射器并且被配置为控制由喷射器喷射的还原剂的量。 控制器基于第一量，第二量和设置在第二SCR催化剂中的衬底的温度来控制喷射器。

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