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    Method of estimating hydrocarbon storage in a catalytic device
    22.
    发明授权
    Method of estimating hydrocarbon storage in a catalytic device 有权
    估计催化装置中烃储存的方法

    公开(公告)号：US09352280B2

    公开(公告)日：2016-05-31

    申请号：US14163120

    申请日：2014-01-24

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Min Sun ,  Michelangelo Ardanese ,  Stefano Cassani ,  Andrea Dutto

    IPC: B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N9/00

    CPC classification number: B01D53/9495 ,  B01D53/9459 ,  F01N3/0814 ,  F01N3/2006 ,  F01N3/208 ,  F01N9/002 ,  F01N9/005 ,  F01N2610/03 ,  F01N2900/0601 ,  F01N2900/1402 ,  F01N2900/1618 ,  F01N2900/1621 ,  F01N2900/1622 ,  Y02T10/47

    Abstract: A method of estimating hydrocarbon storage in a catalytic device of an exhaust gas treatment system includes calculating an amount of hydrocarbons absorbed in the catalytic device per unit volume of exhaust gas over a period of time, calculating an amount of hydrocarbons desorbed in the catalytic device per unit volume of exhaust gas over the period of time, and calculating an amount of hydrocarbons oxidized in the catalytic device per unit volume of exhaust gas over the period of time. The amount of hydrocarbons oxidized in the catalytic device and the amount of hydrocarbons desorbed in the catalytic device are subtracted from the amount of hydrocarbons absorbed in the catalytic device to determine the amount of hydrocarbons stored in the catalytic device.

    Abstract translation: 一种估计废气处理系统的催化装置中的烃储存的方法包括计算在一段时间内每单位体积废气中催化装置中吸收的烃的量，计算每个催化装置中解吸的烃的量 在一段时间内排气的单位体积，并计算在一段时间内每单位体积排气中的催化装置中氧化的烃的量。 在催化装置中氧化的烃的量和在催化装置中解吸的烃的量从在催化装置中吸收的烃的量减去以确定存储在催化装置中的烃的量。

    METHOD OF ESTIMATING ENGINE-OUT NOx MASS FLOW RATE
    23.
    发明申请
    METHOD OF ESTIMATING ENGINE-OUT NOx MASS FLOW RATE 有权
    估算发动机NOx排放量的方法

    公开(公告)号：US20150354428A1

    公开(公告)日：2015-12-10

    申请号：US14299285

    申请日：2014-06-09

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Min Sun ,  Igor Anilovich ,  Nagini Devarakonda ,  Pablo Hernandez Garcia

    IPC: F01N11/00 ,  F01N9/00

    CPC classification number: F01N11/00 ,  F01N9/00 ,  F01N9/005 ,  F01N9/007 ,  F01N11/007 ,  F01N2560/026 ,  F01N2560/07 ,  F01N2900/0412 ,  F01N2900/0416 ,  F01N2900/08 ,  F01N2900/1402 ,  F02D21/08 ,  F02D41/0072 ,  F02D41/1445 ,  F02D41/1461 ,  F02D41/1462 ,  F02D41/222 ,  Y02T10/47

    Abstract: A method of estimating a mass flow rate of nitrogen oxides in exhaust gas includes sensing a mass flow rate of a flow of exhaust gas from the engine. A nitrogen oxides base concentration for when the engine is operating at a reference state is defined, and a nitrogen oxides ratio for a current operating state of the internal combustion engine is calculated. The mass flow rate of the flow of exhaust gas, the nitrogen oxides base concentration, and the nitrogen oxides ratio for the current operating state of the engine are multiplied together to define an estimated value of the current mass flow rate of nitrogen oxides in the flow of exhaust gas from the engine. The estimated value of the mass flow rate of nitrogen oxides may be compared to the output from a nitrogen oxides sensor to determine proper functionality of the nitrogen oxides sensor.

    Abstract translation: 估计废气中氮氧化物的质量流量的方法包括检测来自发动机的废气流的质量流量。 定义发动机在参考状态下工作时的氮氧化物碱浓度，并计算内燃机的当前运行状态的氮氧化物比。 将发动机的当前运转状态的废气流量，氮氧化物碱浓度和氮氧化物比的质量流量相乘，以确定流动中的氮氧化物的当前质量流量的估计值 来自发动机的废气。 可以将氮氧化物的质量流量的估计值与来自氮氧化物传感器的输出进行比较，以确定氮氧化物传感器的正确功能。

    Method of estimating oxygen storage capacity of catalyst
    26.
    发明授权
    Method of estimating oxygen storage capacity of catalyst 有权

    公开(公告)号：US11092096B1

    公开(公告)日：2021-08-17

    申请号：US17009824

    申请日：2020-09-02

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Min Sun ,  Jonathan M. Davis ,  Andrew M. Fedewa ,  Scott H. Wittkopp ,  Brandon Bishop

    IPC: F02D41/14 ,  F02D41/02

    Abstract: An engine system for a vehicle includes an internal combustion engine having an exhaust gas outlet, an exhaust system having a three-way catalyst and a switch-type post oxygen sensor, and an engine control module that controls the engine system. The engine control module includes a first control logic for estimating a three-way catalyst oxygen storage capacity based on a plurality of measured inputs, a second control logic for estimating aging effects of the switch-type post oxygen sensor, and a third control logic that calculates a filtered estimated three-way catalyst oxygen storage capacity for the three-way catalyst.

    Semi-empirical engine-out soot model
    29.
    发明授权
    Semi-empirical engine-out soot model 有权

    公开(公告)号：US10883408B2

    公开(公告)日：2021-01-05

    申请号：US16109349

    申请日：2018-08-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： David E. Edwards ,  Giorgio Sticchi ,  Andrea Dutto ,  Min Sun

    IPC: F01N3/00 ,  F01N9/00 ,  F01N3/025 ,  B01D46/00

    Abstract: An automotive vehicle includes an internal combustion engine that combusts an air/fuel mixture thereby generating exhaust gas containing particulate matter, and an exhaust after-treatment component that collects the particulate matter. A regeneration system burns off the collected particulate matter thereby regenerating the exhaust after-treatment component. A controller obtains a model of the combustion that is based on a kinetic controlled combustion phase and a mixing controlled combustion phase, and determines a point on the model with respect to current engine conditions that indicates an amount of the particulate matter in the exhaust gas.

    Method for diagnosing and controlling ammonia oxidation in selective catalytic reduction devices
    30.
    发明授权
    Method for diagnosing and controlling ammonia oxidation in selective catalytic reduction devices 有权

    公开(公告)号：US10690079B2

    公开(公告)日：2020-06-23

    申请号：US15838860

    申请日：2017-12-12

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Michael A. Smith ,  Sarah Funk ,  David E. Edwards ,  Min Sun ,  Gongshin Qi

    IPC: F02D41/14 ,  B01D53/94 ,  F01N3/10 ,  F01N3/20 ,  F01N11/00

    Abstract: An emissions control system for treating exhaust gas containing NOx emissions from an internal combustion engine comprises a selective catalytic reduction (SCR) device that stores reductant that reacts with the NOx emissions, a reductant supply system configured to inject the reductant according to a reductant storage model; NOx module(s) configured to generate an NOx concentration signal indicating an NOx concentration, temperature module(s) configured to generate a temperature signal indicating an SCR temperature of the SCR device, and a control module operably connected to the reductant supply system, the NOx module, and the temperature module. The control module is configured to determine an amount of the reductant that is parasitically oxidized based on the NOx concentration signal and the temperature signal, and to determine a correction factor based on the amount of parasitically oxidized reductant to modify the reductant storage model.

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