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公开(公告)号：US20140372010A1
公开(公告)日：2014-12-18
申请号：US14026317
申请日：2013-09-13
发明人： Seung Hee Han
IPC分类号： G01M15/10
CPC分类号： G01M15/102 , F02D2041/0067 , F02M26/49
摘要： A method for diagnosing an exhaust gas recirculation (EGR) system includes: a setting step of setting a temperature map with respect to a temperature at an outlet side of an EGR line for an output value reflecting a driving state of a vehicle in a state in which an EGR valve is closed; a measuring step of measuring the temperature at the outlet side of the EGR line at the time of an operation of the EGR system; and a diagnosing step of diagnosing that a fault has been generated in an EGR system when the measured temperature at the outlet side of the EGR line is equal to or less than a reference value set in the temperature map.
摘要翻译： 一种用于诊断废气再循环（EGR）系统的方法，包括：设定步骤，将相对于EGR线的出口侧的温度设定为反映车辆的行驶状态的输出值的温度图， 关闭EGR阀; 在EGR系统的运转时测量EGR管路出口侧的温度的测量步骤; 以及诊断步骤，当EGR线路出口侧的测量温度等于或小于在温度图中设定的参考值时，诊断在EGR系统中已经产生了故障。
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公开(公告)号：US09389144B2
公开(公告)日：2016-07-12
申请号：US14026317
申请日：2013-09-13
发明人： Seung Hee Han
CPC分类号： G01M15/102 , F02D2041/0067 , F02M26/49
摘要： A method for diagnosing an exhaust gas recirculation (EGR) system includes: a setting step of setting a temperature map with respect to a temperature at an outlet side of an EGR line for an output value reflecting a driving state of a vehicle in a state in which an EGR valve is closed; a measuring step of measuring the temperature at the outlet side of the EGR line at the time of an operation of the EGR system; and a diagnosing step of diagnosing that a fault has been generated in an EGR system when the measured temperature at the outlet side of the EGR line is equal to or less than a reference value set in the temperature map.
摘要翻译： 一种用于诊断废气再循环（EGR）系统的方法，包括：设定步骤，将相对于EGR线的出口侧的温度设定为反映车辆的行驶状态的输出值的温度图， 关闭EGR阀; 在EGR系统的运转时测量EGR管路出口侧的温度的测量步骤; 以及诊断步骤，当EGR线路出口侧的测量温度等于或小于在温度图中设定的参考值时，诊断在EGR系统中已经产生了故障。
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