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公开(公告)号：US10107165B2
公开(公告)日：2018-10-23
申请号：US15190285
申请日：2016-06-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Min Sun , Anthony B. Will , Ping Ge , Shifang Li , Gongshin Qi
Abstract: An exhaust aftertreatment system including a selective catalytic reduction device (SCR), a NOx sensor and a reductant injection system is described. A method for controlling the reductant injection system to inject reductant into the exhaust gas feedstream upstream relative to the SCR includes monitoring engine operation, and determining an initial reductant dosing rate responsive to the engine operation. A dosing perturbation is induced in the reductant dosing rate. The exhaust gas feedstream is monitored via the NOx sensor, and a reductant dosing correction term is determined based upon the monitoring. A final dosing rate for controlling the reductant injection system is determined based upon the initial reductant dosing rate, the dosing perturbation, and the reductant dosing correction term.
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公开(公告)号：US20200149490A1
公开(公告)日：2020-05-14
申请号：US16184402
申请日：2018-11-08
Applicant: GM Global Technology Operations LLC
Inventor： Martino A. Casetti , Michael J. Lucido , Ping Ge , Jennifer C. Wheeler
Abstract: A vehicle system includes an engine defining a plurality of cylinders and configured to combust a fuel. A method of increasing efficiency of an engine includes controlling an amount of fuel being injected into the plurality of cylinders of the engine via a respective fuel injector. An exhaust gas recirculation (EGR) system is in selective fluid communication with a second subset of the plurality of cylinders and the air intake system to route the second exhaust product from the second subset of the plurality of cylinders to an air intake system. A valve is coupled to the EGR system and the exhaust system. A first sensor is disposed between the valve and the air intake system, and measures an amount of reformate in the second exhaust product when the valve is in a second position.
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公开(公告)号：US09822697B2
公开(公告)日：2017-11-21
申请号：US14294559
申请日：2014-06-03
Applicant: GM Global Technology Operations LLC
Inventor： Ping Ge , Yue-Yun Wang
CPC classification number: F02B37/24 , F02B37/12 , F02D41/0007 , F02D41/1447 , F02D41/1448 , F02D41/145 , F02D2041/1433 , Y02T10/144
Abstract: A method for controlling a turbine of an engine system to achieve a desired boost pressure is provided. The method determines a desired exhaust gas pressure based on the desired boost pressure by using a model for a power balance between the turbine and a compressor of the engine system. The method generates a base command for controlling a position of a vane of the turbine based on a ratio of the desired exhaust gas pressure to a measured turbine outlet pressure.
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Patent Agency Ranking
公开(公告)号：US10934960B2
公开(公告)日：2021-03-02
申请号：US16179030
申请日：2018-11-02
Applicant: GM Global Technology Operations LLC
Inventor： Zhijian J. Wu , Zhiping S. Liu , Ping Ge , Martino A. Casetti , Gregory P. Matthews
Abstract: A method and system for estimating air mass per cylinder of an internal combustion engine is provided. An output signal from a MAF sensor is digitally processed to provide an estimate air mass per cylinder (APC). The system includes the MAF sensor; a data acquisition unit configured to receive an output signal from the MAF sensor and produce a sampled signal having a sampling rate greater than one sample per firing event; a multiple band pass (MBP) filter configured to remove signal components caused by airflow pulsations and oscillations through the MAF sensor; an envelope detector configured to detect the lower and upper envelopes of the MBP filtered signal; a MAF estimator configured to estimate a mass airflow based on the detected lower and upper envelopes; a signal decimator; a low pass filter; and a APC converter to converted the low pass filtered signal into an estimated APC.
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5.发明授权Increased exhaust temperature warm-up for a rapid light-off of a close-coupled diesel oxidation catalyst 有权增加排气温度预热，快速熄灭紧密耦合的柴油氧化催化剂公开(公告)号：US09422883B2
公开(公告)日：2016-08-23
申请号：US14277886
申请日：2014-05-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Ping Ge , Ryu Hariyoshi
CPC classification number: F02D41/064 , F01N3/2033 , F01N9/00 , F02D41/0002 , F02D41/0007 , F02D41/0055 , F02D41/0255 , F02D41/062 , F02D2041/0017 , Y02T10/26 , Y02T10/42 , Y02T10/47
Abstract: A method is provided for generating rapid light-off for a diesel oxidation catalyst (DOC) close-coupled to a compression-ignition engine. The engine includes an intake passage in fluid communication with a combustion chamber, a throttle for controlling a flow of intake air through the intake passage, and an exhaust passage configured to channel an exhaust gas from the combustion chamber to the DOC. The method includes starting the engine to commence a warm-up thereof and regulating the throttle to restrict supply of the intake airflow to the combustion chamber. The method additionally includes injecting a predetermined amount of fuel into the combustion chamber during the engine's exhaust cycle such that the injected fuel is carried by the exhaust gas and burned in the exhaust passage. Regulating the throttle and injecting fuel during the warm-up of the engine together increase temperature of the exhaust gas for rapid light-off of the close-coupled DOC.
Abstract translation: 提供了一种用于为紧密耦合到压缩点火发动机的柴油氧化催化剂（DOC）产生快速点火的方法。 发动机包括与燃烧室流体连通的进气通道，用于控制通过进气通道的进气的流量的节气门和被配置为将排气从燃烧室引导到DOC的排气通道。 该方法包括启动发动机以开始预热并调节节气门以限制进入燃烧室的进气流的供应。 该方法还包括在发动机的排气循环期间将预定量的燃料喷射到燃烧室中，使得喷射的燃料由废气携带并在排气通道中燃烧。 在发动机预热期间调节节气门和喷射燃料一起增加了废气的温度，以便快速熄灭紧密耦合的DOC。
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6.发明申请公开(公告)号：US20170370261A1
公开(公告)日：2017-12-28
申请号：US15190285
申请日：2016-06-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Min Sun , Anthony B. Will , Ping Ge , Shifang Li , Gongshin Qi
CPC classification number: F01N3/208 , F01N3/106 , F01N11/007 , F01N2550/05 , F01N2560/026 , F01N2610/02 , F01N2900/0408 , F01N2900/0416 , F01N2900/1402
Abstract: An exhaust aftertreatment system including a selective catalytic reduction device (SCR), a NOx sensor and a reductant injection system is described. A method for controlling the reductant injection system to inject reductant into the exhaust gas feedstream upstream relative to the SCR includes monitoring engine operation, and determining an initial reductant dosing rate responsive to the engine operation. A dosing perturbation is induced in the reductant dosing rate. The exhaust gas feedstream is monitored via the NOx sensor, and a reductant dosing correction term is determined based upon the monitoring. A final dosing rate for controlling the reductant injection system is determined based upon the initial reductant dosing rate, the dosing perturbation, and the reductant dosing correction term
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公开(公告)号：US10267247B2
公开(公告)日：2019-04-23
申请号：US15251534
申请日：2016-08-30
Applicant: GM Global Technology Operations LLC
Inventor： Martino Casetti , Darrell W. Burleigh , Ping Ge
Abstract: A fuel vapor control system for a vehicle includes a fuel vapor canister that traps fuel vapor from a fuel tank of the vehicle. A purge valve opens to allow fuel vapor flow to an intake system of an engine and closes to prevent fuel vapor flow to the intake system of the engine. An electrical pump pumps fuel vapor from the fuel vapor canister to the purge valve. A vent valve allows fresh air flow to the vapor canister when the vent valve is open and prevents fresh air flow to the vapor canister when the vent valve is closed. A purge control module controls a speed of the electrical pump, opening of the purge valve, and opening of the vent valve.
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8.发明申请INCREASED EXHAUST TEMPERATURE WARM-UP FOR A RAPID LIGHT-OFF OF A CLOSE-COUPLED DIESEL OXIDATION CATALYST 有权联合柴油氧化催化剂快速熄灭的增加的排气温度升高公开(公告)号：US20150330278A1
公开(公告)日：2015-11-19
申请号：US14277886
申请日：2014-05-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Ping Ge , Ryu Hariyoshi
CPC classification number: F02D41/064 , F01N3/2033 , F01N9/00 , F02D41/0002 , F02D41/0007 , F02D41/0055 , F02D41/0255 , F02D41/062 , F02D2041/0017 , Y02T10/26 , Y02T10/42 , Y02T10/47
Abstract: A method is provided for generating rapid light-off for a diesel oxidation catalyst (DOC) close-coupled to a compression-ignition engine. The engine includes an intake passage in fluid communication with a combustion chamber, a throttle for controlling a flow of intake air through the intake passage, and an exhaust passage configured to channel an exhaust gas from the combustion chamber to the DOC. The method includes starting the engine to commence a warm-up thereof and regulating the throttle to restrict supply of the intake airflow to the combustion chamber. The method additionally includes injecting a predetermined amount of fuel into the combustion chamber during the engine's exhaust cycle such that the injected fuel is carried by the exhaust gas and burned in the exhaust passage. Regulating the throttle and injecting fuel during the warm-up of the engine together increase temperature of the exhaust gas for rapid light-off of the close-coupled DOC.
Abstract translation: 提供了一种用于为紧密耦合到压缩点火发动机的柴油氧化催化剂（DOC）产生快速点火的方法。 发动机包括与燃烧室流体连通的进气通道，用于控制通过进气通道的进气的流量的节气门和被配置为将排气从燃烧室引导到DOC的排气通道。 该方法包括启动发动机以开始预热并调节节气门以限制进入燃烧室的进气流的供应。 该方法还包括在发动机的排气循环期间将预定量的燃料喷射到燃烧室中，使得喷射的燃料由废气携带并在排气通道中燃烧。 在发动机预热期间调节节气门和喷射燃料一起增加了废气的温度，以便快速熄灭紧密耦合的DOC。
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