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    EFFICIENT LEAN NOX TRAP REGENERATION WITH ENCHANCED AMMONIA FORMATION
    14.
    发明申请
    EFFICIENT LEAN NOX TRAP REGENERATION WITH ENCHANCED AMMONIA FORMATION 审中-公开
    有效地利用增强的氨态氮形成重新获得氮氧化物

    公开(公告)号：US20150238903A1

    公开(公告)日：2015-08-27

    申请号：US14189398

    申请日：2014-02-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Rahul Mital ,  Jianwen Li ,  Andrea De Filippo ,  Chang H. Kim ,  Shouxian Ren

    IPC: B01D53/94

    CPC classification number: B01D53/9495 ,  B01D53/9409 ,  B01D53/9431 ,  B01D2258/012 ,  F01N3/021 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F01N9/00 ,  F01N13/009 ,  F01N2410/00 ,  F01N2430/06 ,  F01N2610/02 ,  F01N2610/03 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A method is disclosed of providing a fuel efficient regeneration of an exhaust after-treatment (AT) system that includes a lean oxides of nitrogen (NOX) trap (LNT) and a selective catalytic reduction filter (SCRF) positioned downstream of the LNT. The method includes regulating a selectable position valve. The valve permits a first gas flow portion to pass through the LNT and diverts a remaining second portion of exhaust gas flow from a first passage connecting an engine and the AT system to a second exhaust passage to thereby bypass the LNT. The method also includes regulating a first device to inject fuel into the first portion of the exhaust gas flow. The injection of fuel in to the first portion of the exhaust gas flow provides fuel efficient regeneration of the LNT and promotes NOX conversion and ammonia (NH3) formation in the LNT. A system employing the method is also disclosed.

    Abstract translation: 公开了一种提供排气后处理（AT）系统的燃料效率再生的方法，其包括位于LNT下游的氮（NOX）捕集器（LNT）和选择性催化还原过滤器（SCRF）的贫氧化物。 该方法包括调节可选位置阀。 阀允许第一气体流动部分穿过LNT并将剩余的第二部分废气流从连接发动机和AT系统的第一通道转移到第二排气通道，从而绕过LNT。 该方法还包括调节第一装置以将燃料喷射到废气流的第一部分中。 将燃料喷射到废气流的第一部分中提供了LNT的燃料效率再生，并促进了LNT中的NOX转化和氨（NH 3）形成。 还公开了一种采用该方法的系统。

    Selective catalytic reduction device monitoring system
    15.
    发明授权
    Selective catalytic reduction device monitoring system 有权
    选择性催化还原装置监测系统

    公开(公告)号：US09046025B2

    公开(公告)日：2015-06-02

    申请号：US13912870

    申请日：2013-06-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Raffaello Ardanese ,  Min Sun ,  Justin Adam Shetney ,  Shouxian Ren ,  Christopher P. Musienko

    IPC: F01N11/00 ,  F01N3/20 ,  F01N3/08

    CPC classification number: F01N11/00 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/208 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/1614 ,  F01N2900/1621 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A selective catalytic reduction (SCR) device monitoring system includes an engine out NOx monitoring module, an SCR out NOx monitoring module configured and disposed to monitor NOx released from the SCR device, and a NOx storage model module operatively connected to the engine out NOx module and the SCR out NOx monitoring module. The NOx storage model module is configured and disposed to determine an amount of NOx stored in the SCR device. A consumed ammonia correction model module is operatively coupled to the NOx storage model module and configured and disposed to calculate a corrected consumed ammonia correction factor.

    Abstract translation: 选择性催化还原（SCR）装置监测系统包括发动机排出NOx监测模块，SCR排出NOx监测模块，其配置和设置为监测从SCR装置释放的NOx;以及NOx存储模型模块，其可操作地连接到发动机出口NOx模块 和SCR out NOx监测模块。 NOx存储模型模块被配置和设置以确定存储在SCR装置中的NOx的量。 消耗的氨校正模型模块可操作地耦合到NOx存储模型模块，并且被配置和设置为计算经校正的消耗氨校正因子。

    SELECTIVE CATALYTIC REDUCTION DEVICE MONITORING SYSTEM
    16.
    发明申请
    SELECTIVE CATALYTIC REDUCTION DEVICE MONITORING SYSTEM 有权
    选择性催化还原装置监测系统

    公开(公告)号：US20140360165A1

    公开(公告)日：2014-12-11

    申请号：US13912870

    申请日：2013-06-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Raffaello Ardanese ,  Min Sun ,  Justin Adam Shetney ,  Shouxian Ren ,  Christopher P. Musienko

    IPC: F01N11/00

    CPC classification number: F01N11/00 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/208 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/1614 ,  F01N2900/1621 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A selective catalytic reduction (SCR) device monitoring system includes an engine out NOx monitoring module, an SCR out NOx monitoring module configured and disposed to monitor NOx released from the SCR device, and a NOx storage model module operatively connected to the engine out NOx module and the SCR out NOx monitoring module. The NOx storage model module is configured and disposed to determine an amount of NOx stored in the SCR device. A consumed ammonia correction model module is operatively coupled to the NOx storage model module and configured and disposed to calculate a corrected consumed ammonia prediction factor.

    Abstract translation: 选择性催化还原（SCR）装置监测系统包括发动机排出NOx监测模块，SCR排出NOx监测模块，其配置和设置为监测从SCR装置释放的NOx;以及NOx存储模型模块，其可操作地连接到发动机出口NOx模块 和SCR out NOx监测模块。 NOx存储模型模块被配置和设置以确定存储在SCR装置中的NOx的量。 消耗的氨校正模型模块可操作地耦合到NOx存储模型模块，并且被配置和设置为计算经校正的消耗氨预测因子。

    METHODS FOR OPERATING AND DIAGNOSING INTERNAL COMBUSTION ENGINE EXHAUST GAS TREATMENT SYSTEMS
    17.
    发明申请
    METHODS FOR OPERATING AND DIAGNOSING INTERNAL COMBUSTION ENGINE EXHAUST GAS TREATMENT SYSTEMS 审中-公开

    公开(公告)号：US20200173327A1

    公开(公告)日：2020-06-04

    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.

    Synergistic combinations of low temperature NOx adsorbers
    19.
    发明授权
    Synergistic combinations of low temperature NOx adsorbers 有权

    公开(公告)号：US10145281B2

    公开(公告)日：2018-12-04

    申请号：US14995441

    申请日：2016-01-14

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Shouxian Ren ,  Gongshin Qi ,  Steven J. Schmieg ,  Wei Li

    IPC: F01N3/00 ,  F01N3/08

    Abstract: Nitrogen oxides (NOx), carbon monoxide (CO), and residual hydrocarbons are adsorbed and stored from a low temperature, cold-start, diesel engine (or lean-burn gasoline engine) exhaust stream by a combination of a silver-based (Ag/Al2O3) NOx adsorber material and a zeolite-platinum group metal (zeolite-PGM) adsorber material for low temperature temporary storage of the NOx. The combination of NOx adsorber materials is formed as separate washcoats on channel walls of an extruded flow-through monolithic support. The monolith is located near the exhaust manifold of the lean burn engine where the combination of NOx adsorber particles temporarily adsorb exhaust constituents, and commence oxidation of them, until the progressively warming exhaust stream removes the stored constituents and carries them through the exhaust pipe to downstream NOx reduction converters which have been heated to their operating temperatures and complete the conversion of the NOx constituents to nitrogen and water for discharge from the vehicle's exhaust system.

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