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公开(公告)号：US10914273B2
公开(公告)日：2021-02-09
申请号：US16354690
申请日：2019-03-15
Applicant: GM Global Technology Operations LLC
Inventor： Michael A. Smith , Robert J. Gallon , Michael P. Kaczmar , Martino A. Casetti , Eric M. Hall
Abstract: An engine includes an air intake system, an exhaust system, a single-cylinder-sourced EGR system, an exhaust sensor that is disposed to monitor exhaust gas from the single one of the cylinders, and a diverter valve. A controller includes an instruction set that executable to determine operation of the engine in a fuel cut-off mode, discontinue fuel flow to the single one of the cylinders, divert exhaust gas from the single one of the cylinders to the air intake system, determine an airflow, temperature, and an equivalence ratio of the diverted exhaust gas from the single one of the cylinders, determine a mass flowrate of oxygen in the diverted exhaust gas, integrate the mass flowrate of oxygen in the diverted exhaust gas, and discontinue the diverting of the exhaust gas from the single one of the cylinders when the integrated mass flowrate of oxygen is greater than a threshold value.
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公开(公告)号：US09297843B2
公开(公告)日：2016-03-29
申请号：US13832263
申请日：2013-03-15
Applicant: GM Global Technology Operations LLC
Inventor： Bradley C. Gibson , Eric M. Hall , John W. Siekkinen , Stephen Paul Levijoki
CPC classification number: G01R27/02 , F01N11/007 , F01N2560/025 , F02D41/1441 , F02D41/1455 , F02D41/1456 , F02D41/1494 , F02D41/1495
Abstract: A diagnostic system of a vehicle includes an impedance module and a diagnostic module. The impedance module determines an impedance of a sensing element of an exhaust gas oxygen sensor based on a response of the sensing element to a change in current through the sensing element. The diagnostic module selectively diagnoses a fault associated with the exhaust gas oxygen sensor based on the impedance of the sensing element.
Abstract translation: 车辆的诊断系统包括阻抗模块和诊断模块。 阻抗模块基于感测元件对通过感测元件的电流变化的响应来确定排气氧传感器的感测元件的阻抗。 诊断模块基于感测元件的阻抗选择性地诊断与排气氧传感器相关联的故障。
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公开(公告)号：US20200291906A1
公开(公告)日：2020-09-17
申请号：US16354690
申请日：2019-03-15
Applicant: GM Global Technology Operations LLC
Inventor： Michael A. Smith , Robert J. Gallon , Michael P. Kaczmar , Martino A. Casetti , Eric M. Hall
Abstract: An engine includes an air intake system, an exhaust system, a single-cylinder-sourced EGR system, an exhaust sensor that is disposed to monitor exhaust gas from the single one of the cylinders, and a diverter valve. A controller includes an instruction set that executable to determine operation of the engine in a fuel cut-off mode, discontinue fuel flow to the single one of the cylinders, divert exhaust gas from the single one of the cylinders to the air intake system, determine an airflow, temperature, and an equivalence ratio of the diverted exhaust gas from the single one of the cylinders, determine a mass flowrate of oxygen in the diverted exhaust gas, integrate the mass flowrate of oxygen in the diverted exhaust gas, and discontinue the diverting of the exhaust gas from the single one of the cylinders when the integrated mass flowrate of oxygen is greater than a threshold value.
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公开(公告)号：US20140278013A1
公开(公告)日：2014-09-18
申请号：US13832263
申请日：2013-03-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： BRADLEY C. GIBSON , Eric M. Hall , John W. Siekkinen , Stephen Paul Levijoki
CPC classification number: G01R27/02 , F01N11/007 , F01N2560/025 , F02D41/1441 , F02D41/1455 , F02D41/1456 , F02D41/1494 , F02D41/1495
Abstract: A diagnostic system of a vehicle includes an impedance module and a diagnostic module. The impedance module determines an impedance of a sensing element of an exhaust gas oxygen sensor based on a response of the sensing element to a change in current through the sensing element. The diagnostic module selectively diagnoses a fault associated with the exhaust gas oxygen sensor based on the impedance of the sensing element.
Abstract translation: 车辆的诊断系统包括阻抗模块和诊断模块。 阻抗模块基于感测元件对通过感测元件的电流变化的响应来确定排气氧传感器的感测元件的阻抗。 诊断模块基于感测元件的阻抗选择性地诊断与排气氧传感器相关联的故障。
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