公开(公告)号：US20150088399A1

公开(公告)日：2015-03-26

申请号：US14034626

申请日：2013-09-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Min Sun ,  John X. Cui ,  Anthony B. Will

IPC: F01N11/00

CPC classification number: F01N11/002 ,  F01N9/002 ,  F01N9/005 ,  F01N2900/0412 ,  F01N2900/08 ,  F01N2900/1606 ,  F02D41/029 ,  F02D2041/1433 ,  F02D2200/0812 ,  Y02T10/47

Abstract: A method of estimating soot loading in a diesel particulate filter (DPF) in a vehicle exhaust system includes determining engine operating conditions of an engine in exhaust flow communication with the diesel particulate filter, and monitoring a pressure differential of the exhaust flow across the diesel particulate filter. The method includes estimating soot loading in the diesel particulate filter according to a pressure-based model using the monitored pressure differential when the engine operating conditions are within a predetermined first set of engine operating conditions, and estimating soot loading in the diesel particulate filter according to an engine-out soot model and a DPF soot loading model when the engine operating conditions are within a predetermined second set of operating conditions. The method includes updating the engine-out soot model based in part on a difference in estimated soot loading between the pressure-based model and the DPF soot loading model.

Abstract translation: 一种评估车辆排气系统中的柴油机微粒过滤器（DPF）中的烟灰负荷的方法包括确定发动机与柴油机微粒过滤器的排气流相通的发动机工作状态，以及监测柴油机颗粒物排气流的压力差 过滤。 该方法包括：当发动机工作条件在预定的第一组发动机运行条件内时，根据基于压力的模型来估计柴油机微粒过滤器中的烟灰负荷，并且根据下文估算柴油机微粒过滤器中的烟灰负荷 发动机熄火烟灰模型和DPF烟灰负荷模型，当发动机操作条件在预定的第二组操作条件下时。 该方法包括基于基于压力的模型和DPF烟灰负荷模型之间的估计的烟灰负荷的差异来更新发动机熄灭煤烟模型。

公开(公告)号：US20150088398A1

公开(公告)日：2015-03-26

申请号：US14034615

申请日：2013-09-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： John X. Cui ,  Min Sun ,  Anthony B. Will

IPC: F01N11/00

CPC classification number: F01N11/00 ,  F01N3/023 ,  F01N9/002 ,  F01N9/005 ,  F01N11/002 ,  F01N2900/08 ,  F01N2900/1606 ,  F02D41/029 ,  F02D41/1405 ,  F02D41/1448 ,  F02D41/1467 ,  F02D41/2432 ,  F02D2200/0812 ,  Y02T10/47

Abstract: A method of estimating soot loading in a diesel particulate filter (DPF) in a vehicle exhaust system includes estimating an engine-out soot rate using a first neural network that has a first set of vehicle operating conditions as inputs. The method further includes estimating DPF soot loading using a second neural network that has the estimated engine-out soot rate from the first neural network and a second set of vehicle operating conditions as inputs. Estimating the engine-out soot rate and estimating the DPF soot loading are performed by an electronic controller that executes the first and the second neural networks. The method also provides for training the first and second neural networks both offline (for initial settings of the neural networks in the vehicle), and online (when the vehicle is being used by a vehicle operator). An exhaust system has a controller that implements the method.

Abstract translation: 估计车辆排气系统中的柴油机微粒过滤器（DPF）中的烟灰负荷的方法包括使用具有第一组车辆操作条件作为输入的第一神经网络估计发动机熄灭煤烟率。 该方法还包括使用具有来自第一神经网络的估计发动机熄灭烟灰率和第二​​组车辆操作条件作为输入的第二神经网络估计DPF烟灰负载。 通过执行第一和第二神经网络的电子控制器执行估计发动机熄火烟灰速率和估计DPF烟灰负荷。 该方法还提供离线训练第一和第二神经网络（用于车辆中的神经网络的初始设置）和在线（当车辆由车辆操作者使用时）。 排气系统具有实现该方法的控制器。

公开(公告)号：US20150040543A1

公开(公告)日：2015-02-12

申请号：US13961939

申请日：2013-08-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Justin Adam Shetney ,  Min Sun

IPC: F01N11/00 ,  F01N3/20 ,  B01D53/94

CPC classification number: F01N11/002 ,  B01D53/9418 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/208 ,  F01N13/0093 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/1602 ,  F01N2900/1621 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

Abstract: System and methods can identify a source of nitrogen oxide reduction inefficiency in an exhaust system including first and second selective catalytic reduction (SCR) catalysts connected in series along an exhaust line. The methods and systems can determine which of the first and second SCR catalysts is a source of nitrogen oxide reduction inefficiency based on the temperatures of the exhausts gases flowing through the first and second SCR catalysts.

Abstract translation: 系统和方法可以识别排气系统中的氮氧化物还原效率低的源，包括沿排气管串联连接的第一和第二选择性催化还原（SCR）催化剂。 方法和系统可以基于流过第一和第二SCR催化剂的排气的温度，确定第一和第二SCR催化剂中的哪一种是氮氧化物还原效率低的源。

公开(公告)号：US08906134B2

公开(公告)日：2014-12-09

申请号：US13671918

申请日：2012-11-08

Applicant: GM Global Technology Operations LLC

Inventor： Min Sun ,  Michelangelo Ardanese ,  Jean-Yves Lavallee ,  Amanpal S. Grewal ,  Paul Jasinkiewicz

IPC: B01D39/06 ,  B01D39/20 ,  B01D39/14 ,  B01D50/00 ,  B01D46/46 ,  F02D41/14 ,  F02D41/02 ,  F01N11/00 ,  B01D46/00 ,  F01N9/00

CPC classification number: F01N11/007 ,  B01D46/0057 ,  F01N9/002 ,  F01N11/00 ,  F01N2550/04 ,  F01N2560/026 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1606 ,  F02D41/029 ,  F02D41/1454 ,  F02D41/1461 ,  F02D41/1467 ,  F02D2200/0618 ,  Y02T10/47

Abstract: A method for engine-out soot flow rate prediction of an exhaust gas treatment system is provided. A measured level of oxides of nitrogen in the exhaust gas treatment system is received. An engine fuel injection timing and air-fuel ratio of an engine producing the oxides of nitrogen are also received. An engine timing factor is determined based on the engine fuel injection timing. An engine air-fuel ratio factor is determined based on the engine air-fuel ratio. An engine-out soot flow rate prediction is generated based on the measured level of oxides of nitrogen, the engine timing factor, and the engine air-fuel ratio factor.

Abstract translation: 提供了一种用于排气处理系统的发动机熄烟烟灰流量预测的方法。 接收废气处理系统中测量的氮氧化物浓度。 还接收产生氮氧化物的发动机的发动机燃料喷射正时和空燃比。 基于发动机燃料喷射正时确定发动机正时系数。 基于发动机空燃比来确定发动机空燃比。 基于氮的氧化物的测量水平，发动机正时系数和发动机空燃比因子来产生发动机熄灭烟灰流量预测。

公开(公告)号：US11933528B2

公开(公告)日：2024-03-19

申请号：US17456999

申请日：2021-11-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Neeraj S Shidore ,  Min Sun ,  Ryan D Hopper ,  Cameron Paul Smith

IPC: F25B49/02 ,  G01N9/26

CPC classification number: F25B49/02 ,  G01N9/26 ,  F25B2700/191

Abstract: Methods and systems provided for determining a phase state and/or for determining a degree of subcooling in a fluid. An exemplary method for operating a refrigeration cycle includes flowing a refrigerant through a metering device and calculating a pressure differential of the refrigerant across the metering device. Further, the method includes determining whether the refrigerant is a saturated liquid based on the pressure differential. The method includes, when the refrigerant is not a saturated liquid, cooling the refrigerant upstream of the metering device.

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.

公开(公告)号：US20210095630A1

公开(公告)日：2021-04-01

申请号：US16589579

申请日：2019-10-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yiran Hu ,  David E. Edwards ,  Min Sun ,  Michael J. Paratore, JR. ,  Jun Chen ,  Eugene V. Gonze ,  Sergio Quelhas

IPC: F02N19/04 ,  B60W20/15 ,  B60H1/00

Abstract: A method includes: (a) determining an engine speed of an internal combustion engine, wherein the internal combustion engine has an engine wall, and the engine wall has a wall temperature; (b) determining an engine load of the internal combustion engine; (c) determining a wall-reference temperature as a function of the engine load and the engine speed of the internal combustion engine; and (d) adjusting, using a cooling system, a volumetric flow rate of a coolant flowing through the internal combustion engine to maintain the wall temperature at the wall-reference temperature.

公开(公告)号：US20210063270A1

公开(公告)日：2021-03-04

申请号：US16560361

申请日：2019-09-04

Applicant: GM Global Technology Operations LLC

Inventor： Min Sun ,  Jonathan M. Davis ,  Andrew M. Fedewa ,  Scott MI Wittkopp ,  Gionata Cimini

IPC: G01M3/26 ,  F01N3/10

Abstract: A method of estimating the oxygen storage capacity of a catalyst includes providing an engine system having an internal combustion engine and an exhaust system having a catalyst and an oxygen sensor, providing a three-way catalyst observer model having a Kalman filter and a three-way catalyst kinetic model, estimating a three-way catalyst next time step state and a modeling error, linearizing the three-way catalyst observer model, filtering the estimated three-way catalyst next time step state, and calculating a covariance.

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.

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.