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公开(公告)号：US20130055802A1
公开(公告)日：2013-03-07
申请号：US13697936
申请日：2011-05-16
IPC分类号： G01M15/00
CPC分类号： F01N3/2066 , F01N11/002 , F01N2550/05 , F01N2560/06 , F01N2610/02 , F01N2610/1406 , F01N2900/08 , F01N2900/12 , F01N2900/1811 , F02D41/064 , F02D41/222 , Y02T10/24 , Y02T10/47
摘要： A competence diagnosis system for a urea water temperature sensor that can limit a diagnosis during a cold start. The system includes a cold start condition determination unit that obtains a difference between an engine cooling water temperature and an ambient temperature, a difference between an engine cooling water temperature and a fuel temperature, and a difference between an ambient temperature and a fuel temperature by using an engine cooling water temperature, an ambient temperature, and a fuel temperature measured immediately after engine starting, and allows a diagnosis by the competence diagnosis unit when the temperature differences are less than or equal to a predetermined threshold value.
摘要翻译： 尿素水温度传感器的能力诊断系统可以限制冷启动时的诊断。 该系统包括冷启动条件确定单元，其通过使用冷启动条件确定单元来获得发动机冷却水温度和环境温度之间的差，发动机冷却水温度和燃料温度之间的差，以及环境温度和燃料温度之间的差 发动机冷却水温度，环境温度和发动机启动后立即测量的燃料温度，并且当温度差小于或等于预定阈值时，由能力诊断单元进行诊断。
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公开(公告)号：US08683855B2
公开(公告)日：2014-04-01
申请号：US13697936
申请日：2011-05-16
IPC分类号： G01M15/00
CPC分类号： F01N3/2066 , F01N11/002 , F01N2550/05 , F01N2560/06 , F01N2610/02 , F01N2610/1406 , F01N2900/08 , F01N2900/12 , F01N2900/1811 , F02D41/064 , F02D41/222 , Y02T10/24 , Y02T10/47
摘要： A competence diagnosis system for a urea water temperature sensor that can limit a diagnosis during a cold start. The system includes a cold start condition determination unit that obtains a difference between an engine cooling water temperature and an ambient temperature, a difference between an engine cooling water temperature and a fuel temperature, and a difference between an ambient temperature and a fuel temperature by using an engine cooling water temperature, an ambient temperature, and a fuel temperature measured immediately after engine starting, and allows a diagnosis by the competence diagnosis unit when the temperature differences are less than or equal to a predetermined threshold value.
摘要翻译： 尿素水温度传感器的能力诊断系统可以限制冷启动时的诊断。 该系统包括冷启动条件确定单元，其通过使用冷启动条件确定单元来获得发动机冷却水温度和环境温度之间的差，发动机冷却水温度和燃料温度之间的差，以及环境温度和燃料温度之间的差 发动机冷却水温度，环境温度和发动机启动后立即测量的燃料温度，并且当温度差小于或等于预定阈值时，由能力诊断单元进行诊断。
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3.发明授权公开(公告)号：US08813546B2
公开(公告)日：2014-08-26
申请号：US13808435
申请日：2011-07-07
CPC分类号： G01M15/10 , F01N3/035 , F01N3/208 , F01N9/00 , F01N9/002 , F01N11/00 , F01N2550/00 , F01N2560/026 , F01N2590/08 , F02D41/029 , F02D41/1441 , F02D41/1461 , F02D41/1462 , F02D41/1463 , F02D41/222 , G01M15/102 , Y02T10/24 , Y02T10/40 , Y02T10/47
摘要： A NOx sensor diagnosis device which can diagnose validity of a NOx sensor by considering an environmental condition and can prevent erroneous diagnosis, and a selective catalytic reduction system are provided. The device provided in an exhaust pipe of an engine E and diagnosing a NOx sensor that detects NOx concentration in an exhaust gas, a diagnosis prohibition determination unit is provided that prohibits diagnosis of the NOx sensor during diesel particulate filter regeneration, during power take-off operation or during exhaust brake operation.
摘要翻译： 一种NOx传感器诊断装置，其可以通过考虑环境条件来诊断NOx传感器的有效性并且可以防止错误诊断，并且提供选择性催化还原系统。 设置在发动机E的排气管内的装置和诊断排气中的NOx浓度的NOx传感器，提供了禁止在柴油机微粒过滤器再生期间在动力输出期间对NOx传感器进行诊断的诊断禁止判定单元 操作或排气制动操作。
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4.发明申请公开(公告)号：US20130060486A1
公开(公告)日：2013-03-07
申请号：US13698189
申请日：2011-05-16
IPC分类号： G01N31/00
CPC分类号： F02D41/222 , F01N3/208 , F01N11/00 , F01N2560/026 , F01N2610/02 , F01N2900/14 , F02D41/146 , F02D2041/228 , F02D2200/021 , F02D2200/0414 , F02D2200/703 , Y02T10/24 , Y02T10/40
摘要： An NOx sensor diagnosis apparatus, which diagnoses an NOx sensor provided in an exhaust pipe to detect a concentration of NOx in exhaust gas, includes a calculation value operating unit to acquire a calculation value of the concentration of NOx in the exhaust gas based on an actuation state of an engine, an error determining unit to determine that the sensor is erroneous when a difference between the calculation value and the detection value of the concentration of NOx detected by the sensor is larger than a determination threshold value, and a determination threshold value setting unit to set the determination threshold value based on a temperature of water for cooling the engine, an atmospheric pressure, and an outdoor temperature.
摘要翻译： 一种NOx传感器诊断装置，其对设置在排气管中的NOx传感器进行诊断，以检测排气中的NOx的浓度，包括：计算值运算单元，其基于动作获取排气中的NOx浓度的计算值 发动机的状态，当所述计算值与由所述传感器检测到的NOx浓度的检测值之间的差大于确定阈值时确定所述传感器是错误的错误确定单元，以及确定阈值设置 单元，用于基于用于冷却发动机的水的温度，大气压力和室外温度来设定确定阈值。
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5.发明申请公开(公告)号：US20130104638A1
公开(公告)日：2013-05-02
申请号：US13808435
申请日：2011-07-07
IPC分类号： G01M15/10
CPC分类号： G01M15/10 , F01N3/035 , F01N3/208 , F01N9/00 , F01N9/002 , F01N11/00 , F01N2550/00 , F01N2560/026 , F01N2590/08 , F02D41/029 , F02D41/1441 , F02D41/1461 , F02D41/1462 , F02D41/1463 , F02D41/222 , G01M15/102 , Y02T10/24 , Y02T10/40 , Y02T10/47
摘要： A NOx sensor diagnosis device which can diagnose validity of a NOx sensor by considering an environmental condition and can prevent erroneous diagnosis, and a selective catalytic reduction system are provided. The device provided in an exhaust pipe of an engine E and diagnosing a NOx sensor that detects NOx concentration in an exhaust gas, a diagnosis prohibition determination unit is provided that prohibits diagnosis of the NOx sensor during diesel particulate filter regeneration, during power take-off operation or during exhaust brake operation.
摘要翻译： 一种NOx传感器诊断装置，其可以通过考虑环境条件来诊断NOx传感器的有效性并且可以防止错误诊断，并且提供选择性催化还原系统。 设置在发动机E的排气管内的装置和诊断排气中的NOx浓度的NOx传感器，提供了禁止在柴油机微粒过滤器再生期间在动力输出期间对NOx传感器进行诊断的诊断禁止判定单元 操作或排气制动操作。
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6.发明授权公开(公告)号：US09145842B2
公开(公告)日：2015-09-29
申请号：US13698189
申请日：2011-05-16
CPC分类号： F02D41/222 , F01N3/208 , F01N11/00 , F01N2560/026 , F01N2610/02 , F01N2900/14 , F02D41/146 , F02D2041/228 , F02D2200/021 , F02D2200/0414 , F02D2200/703 , Y02T10/24 , Y02T10/40
摘要： An NOx sensor diagnosis apparatus, which diagnoses an NOx sensor provided in an exhaust pipe to detect a concentration of NOx in exhaust gas, includes a calculation value operating unit to acquire a calculation value of the concentration of NOx in the exhaust gas based on an actuation state of an engine, an error determining unit to determine that the sensor is erroneous when a difference between the calculation value and the detection value of the concentration of NOx detected by the sensor is larger than a determination threshold value, and a determination threshold value setting unit to set the determination threshold value based on a temperature of water for cooling the engine, an atmospheric pressure, and an outdoor temperature.
摘要翻译： 一种NOx传感器诊断装置，其对设置在排气管中的NOx传感器进行诊断，以检测排气中的NOx的浓度，包括：计算值运算单元，其基于动作获取排气中的NOx浓度的计算值 发动机的状态，当所述计算值与由所述传感器检测到的NOx浓度的检测值之间的差大于确定阈值时确定所述传感器是错误的错误确定单元，以及确定阈值设置 单元，用于基于用于冷却发动机的水的温度，大气压力和室外温度来设定确定阈值。
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