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公开(公告)号：US20150211962A1
公开(公告)日：2015-07-30
申请号：US14168485
申请日：2014-01-30
Applicant: GM Global Technology Operations LLC
Inventor： Min Sun , Michelangelo Ardanese , Michele Bilancia , Giorgio Sticchi
CPC classification number: G01M15/102 , G01N33/0036 , Y02A50/25
Abstract: A method of estimating a current soot output from an engine includes sensing a mass flow rate of a flow of exhaust gas from the engine, and defining a soot output base rate of the engine when the engine is operating at a reference state. A soot ratio for a current operating state of the engine is calculated. The mass flow rate, the soot output base rate, and the soot ratio are multiplied together to define an estimated value of the current soot output from the engine. The soot ratio is based on current engine operating parameters, including an air/fuel ratio of the engine, an exhaust gas recirculation ratio of the engine, a fuel injection pressure of the engine, and a fuel injection timing of the engine.
Abstract translation: 估计来自发动机的当前烟灰输出的方法包括感测来自发动机的废气流的质量流量，并且当发动机在参考状态下操作时，确定发动机的烟灰输出基本速率。 计算发动机的当前运行状态的烟灰比。 将质量流量，烟灰输出基准率和烟灰比相乘在一起以定义从发动机输出的当前烟灰的估计值。 烟炱比基于目前的发动机操作参数，包括发动机的空气/燃料比，发动机的废气再循环比，发动机的燃料喷射压力和发动机的燃料喷射正时。
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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
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.
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Patent Agency Ranking
公开(公告)号：US10138783B2
公开(公告)日：2018-11-27
申请号：US15236537
申请日：2016-08-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michele Bilancia , Giorgio Sticchi , Luis Daniel Guerrero Cruz , Stefano Cassani
Abstract: A computer program, system and method are provided for thermally regulating an injector injecting a reducing agent into an exhaust pipe of an internal combustion engine. A pump is activated to deliver a coolant in a coolant circuit having a portion in heat exchange relation with the injector. A value is determined for a mass flow rate of the coolant delivered by the pump. A value is calculated for a temperature of the injector as a function of the determined value of the mass flow rate. A difference is calculated between the calculated value of the injector temperature and a predetermined set-point value thereof, and the mass flow rate of the coolant delivered by the pump is adjusted on the basis of the calculated difference.
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公开(公告)号：US20200063631A1
公开(公告)日：2020-02-27
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
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.
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公开(公告)号：US10190521B2
公开(公告)日：2019-01-29
申请号：US15608501
申请日：2017-05-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Giorgio Sticchi , Francesco Castorina , Andrea Dutto
Abstract: A method of operating an internal combustion engine having a turbocharger for pressurizing an intake airflow and an after-treatment (AT) system including an AT device for reducing nitrogen oxides (NOX) concentration in the engine exhaust gas. The method includes operating the engine with a variable high-pressure exhaust gas recirculation (EGR) and low-pressure EGR split in the intake airflow. The method also includes determining the NOX concentration in the exhaust gas and determining a current high-pressure EGR to low-pressure EGR split in the intake airflow. The method additionally includes determining an EGR corrective factor using the determined current high-pressure EGR to low-pressure EGR split and applying the determined EGR corrective factor to the determined NOX concentration to generate a corrected NOX concentration. Furthermore, the method includes regulating operation of the AT system to treat the exhaust gas via the AT device in response to the generated corrected NOX concentration.
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公开(公告)号：US20180347495A1
公开(公告)日：2018-12-06
申请号：US15608501
申请日：2017-05-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Giorgio Sticchi , Francesco Castorina , Andrea Dutto
CPC classification number: F02D41/18 , F02B47/08 , F02D29/06 , F02D41/0072 , F02D2041/0075 , F02D2200/0414 , F02D2200/0806 , Y02T10/144
Abstract: A method of operating an internal combustion engine having a turbocharger for pressurizing an intake airflow and an after-treatment (AT) system including an AT device for reducing nitrogen oxides (NOX) concentration in the engine exhaust gas. The method includes operating the engine with a variable high-pressure exhaust gas recirculation (EGR) and low-pressure EGR split in the intake airflow. The method also includes determining the NOX concentration in the exhaust gas and determining a current high-pressure EGR to low-pressure EGR split in the intake airflow. The method additionally includes determining an EGR corrective factor using the determined current high-pressure EGR to low-pressure EGR split and applying the determined EGR corrective factor to the determined NOX concentration to generate a corrected NOX concentration. Furthermore, the method includes regulating operation of the AT system to treat the exhaust gas via the AT device in response to the generated corrected NOX concentration.
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公开(公告)号：US09689778B2
公开(公告)日：2017-06-27
申请号：US14168485
申请日：2014-01-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Min Sun , Michelangelo Ardanese , Michele Bilancia , Giorgio Sticchi
CPC classification number: G01M15/102 , G01N33/0036 , Y02A50/25
Abstract: A method of estimating a current soot output from an engine includes sensing a mass flow rate of a flow of exhaust gas from the engine, and defining a soot output base rate of the engine when the engine is operating at a reference state. A soot ratio for a current operating state of the engine is calculated. The mass flow rate, the soot output base rate, and the soot ratio are multiplied together to define an estimated value of the current soot output from the engine. The soot ratio is based on current engine operating parameters, including an air/fuel ratio of the engine, an exhaust gas recirculation ratio of the engine, a fuel injection pressure of the engine, and a fuel injection timing of the engine.
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