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    Exhaust gas treatment device having integrated gas sampling sensor
    32.
    发明授权
    Exhaust gas treatment device having integrated gas sampling sensor 有权

    公开(公告)号：US10125659B2

    公开(公告)日：2018-11-13

    申请号：US15202981

    申请日：2016-07-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Luciano Nunziato Di Perna ,  Jianwen Li ,  Raffaello Ardanese ,  Rahul Mital ,  David B. Brown

    IPC: B01D53/94 ,  F01N13/00 ,  F01N3/28

    Abstract: An exhaust gas treatment device includes a housing having a wall. The wall of the housing defines an interior chamber. A substrate is supported by the housing within the interior chamber of the housing. The substrate extends along a longitudinal axis. The substrate includes a flow through structure that allows the flow of exhaust gas to flow through the substrate. The substrate includes a catalytic composition disposed thereon for reacting with the flow of exhaust gas. The substrate includes a cavity, extending along a cavity axis, which is transverse to the longitudinal axis of the substrate. A sensor is attached to the housing. The sensor includes a probe that at least partially extends into the cavity of the substrate, for sensing a gaseous component in the flow of exhaust gas. The cavity mixes the flow of exhaust gas and directs the exhaust gas toward the probe of the sensor.

    SELECTIVE CATALYTIC REDUCTION DEVICE
    34.
    发明申请
    SELECTIVE CATALYTIC REDUCTION DEVICE 有权
    选择性催化还原装置

    公开(公告)号：US20160230631A1

    公开(公告)日：2016-08-11

    申请号：US14619146

    申请日：2015-02-11

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Rahul Mital ,  Jianwen Li ,  Steven J. Schmieg

    IPC: F01N3/20

    CPC classification number: F01N3/2066 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2610/02 ,  F01N2900/1622 ,  Y02A50/2325 ,  Y02T10/24

    Abstract: A SCR device includes a substrate having a first portion, and a second portion disposed downstream of the first portion. The first portion of the substrate includes a volume that is between 15% and 25% of a total volume of the substrate. A first selective catalytic reduction compound is disposed on the first portion of the substrate, and includes an iron zeolite (Fe-Zeolite) compound. A second selective catalytic reduction compound is disposed on the second portion of the substrate, and includes a copper (Cu) SAPO-34 compound. The copper SAPO-34 compound includes a catalyst density of less than 2.74 mg copper per cubic centimeter of copper SAPO-34 compound. The copper SAPO-34 compound is applied onto the second portion of the substrate at a compound density of less than 110 g of copper SAPO-34 compound per liter of volume of the second portion of the substrate.

    Abstract translation: SCR装置包括具有第一部分的基板和设置在第一部分下游的第二部分。 基材的第一部分包括占基材总体积的15％至25％的体积。 第一选择性催化还原化合物设置在基材的第一部分上，并且包括铁沸石（Fe-沸石）化合物。 第二选择性催化还原化合物设置在基材的第二部分上，并且包含铜（Cu）SAPO-34化合物。 铜SAPO-34化合物包括每立方厘米铜SAPO-34化合物的催化剂密度小于2.74mg铜。 铜SAPO-34化合物以基板的第二部分的体积计，以小于110g的SAP SAP-34化合物的化合物密度施加到基材的第二部分上。

    Ambient humidity and temperature correction to particulate filter soot rate
    35.
    发明授权
    Ambient humidity and temperature correction to particulate filter soot rate 有权
    环境湿度和温度校正微粒过滤器烟灰率

    公开(公告)号：US09322312B2

    公开(公告)日：2016-04-26

    申请号：US14197856

    申请日：2014-03-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： John A. Catalogna ,  Rebecca J. Darr ,  Rahul Mital

    IPC: F01N3/00 ,  F01N3/023 ,  F02D41/02 ,  F01N9/00

    CPC classification number: F01N3/023 ,  F01N9/002 ,  F01N9/005 ,  F01N2560/028 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1606 ,  F01N2900/1628 ,  F02D41/029 ,  F02D2200/0418 ,  F02D2200/0812

    Abstract: In one exemplary embodiment of the invention, a method of regenerating an exhaust gas particulate filter in a vehicle having an internal combustion engine is provided. The method includes determining a soot accumulation in the particulate filter, determining a soot humidity and temperature correction factor, and adjusting, using the soot humidity and temperature correction factor, the soot accumulation to determine a corrected soot accumulation in the particulate filter. The method further includes performing a regeneration of the particulate filter when at least one of the following occurs: the corrected soot accumulation reaches a predetermined threshold, and the corrected soot accumulation indicates a contorted soot mass to flow resistance relationship.

    Abstract translation: 在本发明的一个示例性实施例中，提供了一种在具有内燃机的车辆中再生排气微粒过滤器的方法。 该方法包括确定颗粒过滤器中的烟灰积聚，确定煤烟湿度和温度校正因子，以及使用煤烟湿度和温度校正因子来调整烟灰积聚以确定微粒过滤器中校正的烟灰积聚。 该方法还包括当发生以下至少一种情况时执行微粒过滤器的再生：经校正的烟炱积累达到预定阈值，并且经校正的烟炱积累指示扭曲的烟灰质量与流动阻力关系。

    AMBIENT HUMIDITY AND TEMPERATURE CORRECTION TO PARTICULATE FILTER SOOT RATE
    36.
    发明申请
    AMBIENT HUMIDITY AND TEMPERATURE CORRECTION TO PARTICULATE FILTER SOOT RATE 有权
    环境温度和温度校正以滤除滤波器的速率

    公开(公告)号：US20150252699A1

    公开(公告)日：2015-09-10

    申请号：US14197856

    申请日：2014-03-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： John A. Catalogna ,  Rebecca J. Darr ,  Rahul Mital

    IPC: F01N3/023

    CPC classification number: F01N3/023 ,  F01N9/002 ,  F01N9/005 ,  F01N2560/028 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1606 ,  F01N2900/1628 ,  F02D41/029 ,  F02D2200/0418 ,  F02D2200/0812

    Abstract: In one exemplary embodiment of the invention, a method of regenerating an exhaust gas particulate filter in a vehicle having an internal combustion engine is provided. The method includes determining a soot accumulation in the particulate filter, determining a soot humidity and temperature correction factor, and adjusting, using the soot humidity and temperature correction factor, the soot accumulation to determine a corrected soot accumulation in the particulate filter. The method further includes performing a regeneration of the particulate filter when at least one of the following occurs: the corrected soot accumulation reaches a predetermined threshold, and the corrected soot accumulation indicates a contorted soot mass to flow resistance relationship.

    Abstract translation: 在本发明的一个示例性实施例中，提供了一种在具有内燃机的车辆中再生排气微粒过滤器的方法。 该方法包括确定颗粒过滤器中的烟灰积聚，确定煤烟湿度和温度校正因子，以及使用煤烟湿度和温度校正因子来调整烟灰积聚以确定微粒过滤器中校正的烟灰积聚。 该方法还包括当发生以下至少一种情况时执行微粒过滤器的再生：经校正的烟炱积累达到预定阈值，并且经校正的烟炱积累指示扭曲的烟灰质量与流动阻力关系。

    METHOD FOR DETERMINING AN ESTIMATED AMOUNT OF SOOT ACCUMULATED IN A PARTICULATE FILTER OF AN EXHAUST GAS AFTER-TREATMENT SYSTEM
    37.
    发明申请
    METHOD FOR DETERMINING AN ESTIMATED AMOUNT OF SOOT ACCUMULATED IN A PARTICULATE FILTER OF AN EXHAUST GAS AFTER-TREATMENT SYSTEM 有权
    用于确定在排气后处理系统的颗粒过滤器中累积的SO的估计量的方法

    公开(公告)号：US20150198076A1

    公开(公告)日：2015-07-16

    申请号：US14153449

    申请日：2014-01-13

    Applicant: GM Global Technology Operations LLC

    Inventor： Jianwen Li ,  Rahul Mital

    IPC: F01N9/00 ,  F01N3/035 ,  F01N11/00

    CPC classification number: F01N9/002 ,  F01N3/035 ,  F01N3/106 ,  F01N3/2066 ,  F01N11/002 ,  F01N2550/04 ,  F01N2900/1606 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A method for estimating the amount of soot accumulated in a particulate filter of a vehicle exhaust gas system is provided. The system may include an engine, an exhaust gas system, having a particulate filter, and a controller configured to execute the present method. The controller may be configured to evaluate an instantaneous volumetric flow rate of an exhaust gas flowing through the exhaust gas system; monitor an exhaust gas pressure drop across the particulate filter; determine a drive state of the vehicle based on the instantaneous volumetric flow rate of exhaust gas and the exhaust gas pressure drop; and execute one of a first control action when the drive state is a steady-state drive state and a second control action when the drive state is a transient-state drive state.

    Abstract translation: 提供了一种用于估计在车辆废气系统的微粒过滤器中积累的烟尘的量的方法。 该系统可以包括具有微粒过滤器的发动机，排气系统和被配置为执行本方法的控制器。 控制器可以被配置为评估流过排气系统的废气的瞬时体积流量; 监测颗粒过滤器上的废气压降; 基于废气的瞬时体积流量和废气压降确定车辆的驱动状态; 并且当所述驱动状态是稳态驱动状态时，执行第一控制动作中的一个，以及当所述驱动状态是过渡状态驱动状态时的第二控制动作。

    Methods for operating and diagnosing internal combustion engine exhaust gas treatment systems
    39.
    发明授权
    Methods for operating and diagnosing internal combustion engine exhaust gas treatment systems 有权

    公开(公告)号：US10907521B2

    公开(公告)日：2021-02-02

    申请号：US16206021

    申请日：2018-11-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Shouxian Ren ,  Gongshin Qi ,  Rahul Mital ,  Anirban Sett

    IPC: F01N3/20 ,  F01N3/10 ,  F02D41/02 ,  B01D53/94

    Abstract: Internal combustion engine (ICE) exhaust gas treatment systems include the ICE having one or more cylinders configured to receive a mixture of air and fuel defined by an air to fuel ratio (AFR) for combustion therein, a control module configured to control the AFR, a diesel oxidation catalyst (DOC) configured to receive exhaust gas generated by the ICE and oxidize NOx species within the exhaust gas, and a selective catalytic reduction device (SCR) configured to receive exhaust gas from the DOC. Methods for operating and diagnosing such systems include determining, via the control module, a baseline value of a SCR performance parameter which is unsuitable, changing, via the control module, the AFR to change the DOC outlet NO2:NOx ratio, subsequently assessing a second value of the SCR performance parameter, and implementing a control action based on the second value of the SCR performance parameter.

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