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1. 发明公开

EP2599972A4 NOX SENSOR DIAGNOSIS DEVICE AND SCR SYSTEM 有权
标题翻译：诊断设备的NOx传感器和SCR系统
公开(公告)号：EP2599972A4
公开(公告)日：2016-05-18
申请号：EP11803655
申请日：2011-07-07
申请人： ISUZU MOTORS LTD
发明人： TAKAHASHI HIROTAKA , MIZUTANI MASASHI , OGAWA TAKANOBU
IPC分类号： F01N3/18 , F01N3/08 , F01N3/24 , F01N9/00 , F02D9/06 , F02D41/22
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

2. 发明公开

EP2541006A4 UREA QUALITY DIAGNOSIS SYSTEM 无效
标题翻译：系统ZURHARNSTOFFQUALITÄTSDIAGNOSE
公开(公告)号：EP2541006A4
公开(公告)日：2015-02-25
申请号：EP11747385
申请日：2011-02-23
申请人： ISUZU MOTORS LTD
发明人： TAKAHASHI HIROTAKA , FUKUOKA TAKESHI , ITOU TOMOYUKI , OKAMOTO YASUO , MASHIKO TATSUO
IPC分类号： F01N3/08 , F01N3/18
CPC分类号： F01N3/2066 , F01N11/00 , F01N2550/05 , F01N2610/02 , F01N2610/14 , F01N2900/1812 , F01N2900/1818 , Y02T10/24 , Y02T10/47
摘要： A urea quality diagnosis system capable of accurately diagnosing a quality of an aqueous urea solution in a urea tank. A concentration and a level L of an aqueous urea solution inside a urea tank 16 are detected, and the quality of the aqueous urea solution is diagnosed based on a detected value of the concentration of the aqueous urea solution when the level L is equal to or higher than a predetermined value.
摘要翻译：一种能够精确地诊断尿素罐中的尿素水溶液的质量的尿素质量诊断系统。检测尿素罐16内的尿素水溶液的浓度和水平L，根据尿素水溶液的浓度的检测值，诊断尿素水溶液的质量，当水平L等于或等于高于预定值。

3. 发明公开

EP2573371A4 NOX SENSOR DIAGNOSING DEVICE AND SCR SYSTEM 审中-公开
公开(公告)号：EP2573371A4
公开(公告)日：2018-02-28
申请号：EP11783508
申请日：2011-05-16
申请人： ISUZU MOTORS LTD
发明人： TAKAHASHI HIROTAKA , MIZUTANI MASASHI , OGAWA TAKANOBU
IPC分类号： F02D41/22 , F01N3/08 , F01N3/20 , F01N11/00 , F02D41/14 , F02D45/00
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： Provided are a NOx sensor diagnosis apparatus capable of diagnosing the appropriateness of a NOx sensor by considering environmental conditions and preventing misdiagnosis, and an SCR system. A NOx sensor diagnose apparatus, which diagnoses a NOx sensor 110 provided in an exhaust pipe 102 of an engine E and configured to detect the concentration of NOx in exhaust gas, includes a calculation value operating unit 2 configured to acquire the calculation value of the concentration of NOx in the exhaust gas based on the actuation state of the engine E, an error determining unit 3 configured to determine that the NOx sensor 110 is erroneous when a difference between the calculation value of the concentration of NOx acquired by the calculation value operating unit 2 and the detection value of the concentration of NOx detected by the NOx sensor 110 is larger than a determination threshold value, and a determination threshold value setting unit 4 configured to set the determination threshold value based on the temperature of the cooling water for cooling the engine E, an atmospheric pressure, and an outdoor temperature.

4. 发明公开

EP2573343A4 COMPETENCY DIAGNOSIS SYSTEM FOR UREA WATER TEMPERATURE SENSOR 有权
标题翻译： ÜOR OR OR OR OR OR OR OR OR OR OR OR OR OR OR
公开(公告)号：EP2573343A4
公开(公告)日：2016-01-06
申请号：EP11783503
申请日：2011-05-16
申请人： ISUZU MOTORS LTD
发明人： TAKAHASHI HIROTAKA , HAMAGUCHI YOSHINORI , OGAWA TAKANOBU
IPC分类号： F01N3/08 , F01N11/00 , F02D45/00
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： Provided is a competence diagnosis system for a urea water temperature sensor that can limit a diagnosis during a cold start. A competence diagnosis system for a urea water temperature sensor 129 includes a competence diagnosis unit 127 that diagnoses a failure of a temperature sensor 121 provided in a urea tank 105 by comparing a temperature of urea water measured by the temperature sensor 121 with an ambient temperature. The competence diagnosis system for a urea water temperature sensor 129 includes a cold start condition determination unit 128 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 127 when the temperature differences are less than or equal to a predetermined threshold value.
摘要翻译：提供了一种能够限制冷启动时诊断的尿素水温度传感器的能力诊断系统。用于尿素水温度传感器129的能力诊断系统包括能力诊断单元127，其通过将由温度传感器121测量的尿素水的温度与环境温度进行比较来诊断设置在尿素箱105中的温度传感器121的故障。尿素水温传感器129的能力诊断系统包括：冷启动条件判定部128，其求出发动机冷却水温度与环境温度之差，发动机冷却水温度与燃料温度之差，通过使用发动机冷却水温度，环境温度和发动机起动后立即测量的燃料温度在环境温度和燃料温度之间，并且当温度差小于或等于1时由能力诊断单元127进行诊断预定阈值。

5. 发明公开

EP2942502A4 UREA WATER CONSUMPTION DIAGNOSTIC DEVICE FOR UREA SCR 有权
标题翻译：设备诊断尿素用水量与尿素的选择性催化还原
公开(公告)号：EP2942502A4
公开(公告)日：2016-09-28
申请号：EP13869233
申请日：2013-12-17
申请人： ISUZU MOTORS LTD
发明人： NIHONGI SHIGERU , TAKAHASHI HIROTAKA , MINEZAWA MASANOBU , FUKUOKA TAKESHI , SUZUKI YUTAKA , TAKAHASHI KOUICHI
IPC分类号： F01N3/08 , F01N3/20 , F01N11/00
CPC分类号： F01N3/208 , F01N11/00 , F01N2550/02 , F01N2550/05 , F01N2560/026 , F01N2610/148 , F01N2900/1812 , F01N2900/1814 , F01N2900/1818 , Y02T10/24 , Y02T10/47
摘要： Provided is a urea water consumption diagnostic device for urea SCR, which is capable of detecting normal and abnormal spraying of urea water from a dosing valve. The urea water consumption diagnostic device for urea SCR draws urea water from a urea water tank (15) using a supply pump (18), and sprays the same from a dosing valve (12) provided upstream of an SCR device (11) via a pressurized urea water feed line (20). The urea water consumption diagnostic device includes a NOx sensor (13) disposed downstream of the SCR device (11), NOx purification rate determination means (34) configured to receive a detection value from the NOx sensor (13) and determine from the detection value whether the NOx purification rate is within a prescribed value range, and abnormality diagnostic means (33) configured to determine a difference between the urea water spray volume amount sprayed from the dosing valve (12) and a urea water consumption volume in the urea water tank, and also determine whether there is clogging of urea water in the pressurized urea water feed line (20) or the dosing valve (12) on the basis of the NOx purification rate used by the NOx purification rate determination means (34).
摘要翻译：提供了一种用于尿素SCR的尿素水的消耗诊断装置，所有这一切都能够从定量阀尿素水的正常和异常检测喷涂。用于尿素SCR尿素水消耗量诊断设备消耗的尿素水从使用供给泵（18）的尿素水箱（15）和从经由设置SCR装置（11）的上游的计量阀（12）喷射的相同加压尿素水供给管线（20）。尿素水消耗量诊断装置包括：从所述检测值的下游设置构造成从所述NOx传感器（13）接收的检测值SCR装置（11），NO X净化率确定装置（34）的NO x传感器（13）和确定性矿是否NOx净化率是规定的值的范围内，并且被配置为确定矿从定量阀（12）喷射的尿素水喷雾体积量和尿素水的消耗体积在尿素水箱之间的差的异常诊断装置（33）的，因此确定性矿是否存在尿素加压水供给管线（20）或由NOx净化率确定装置（34）中使用的NO X净化率的基础上计量阀（12）堵塞尿素水的。

6. 发明公开

EP2578860A4 SELECTIVE CATALYTIC REDUCTION SYSTEM 有权
标题翻译： SYSTEMFÜRSELEKTIVE KATALYTISCHE REDUKTION
公开(公告)号：EP2578860A4
公开(公告)日：2015-12-16
申请号：EP11786510
申请日：2011-05-16
申请人： ISUZU MOTORS LTD
发明人： FUKUOKA TAKESHI , TAKAHASHI HIROTAKA , NISHIKAWA TOMOO
IPC分类号： F02D45/00 , F01N3/08 , G01F23/00 , G01F23/30 , G01F23/70 , G01F25/00
CPC分类号： F01N3/18 , F01N3/208 , F01N2550/05 , F01N2610/02 , F01N2610/1406 , F01N2610/142 , F01N2900/0416 , F01N2900/0418 , F01N2900/1814 , G01F23/72 , G01F23/74 , G01F23/76 , G01F25/0069 , Y02T10/24
摘要： An SCR system that can detect whether or not a float is stuck even where a water level sensor that detects a liquid level in a stepwise manner is used is provided. The SCR system includes: a urea injection quantity integrating unit 2 that integrates an injected quantity of urea to calculate a urea injection quantity integrated value; an integrated value resetting unit 3 that if a detected value from detection means 202 changes, resets the urea injection quantity integrated value; and an abnormality determination unit 4 that if the urea injection quantity integrated value exceeds a predetermined threshold value for determination, determines a level sensor 120 as having an abnormality.
摘要翻译：提供了一种SCR系统，其可以检测在使用以逐步方式检测液面的水位传感器的情况下浮子是否被卡住。 SCR系统包括：尿素喷射量积分单元2，其累积注入量的尿素以计算尿素喷射量积分值; 积分值复位单元3，如果来自检测单元202的检测值发生变化，则复位尿素喷射量积分值; 以及异常判定单元4，如果尿素喷射量积分值超过用于确定的预定阈值，则将电平传感器120确定为具有异常。

7. 发明公开

EP2942501A4 UREA WATER CONSUMPTION DIAGNOSTIC DEVICE FOR UREA SCR 有权
标题翻译：设备诊断尿素用水量与尿素的选择性催化还原
公开(公告)号：EP2942501A4
公开(公告)日：2016-09-14
申请号：EP13868121
申请日：2013-12-17
申请人： ISUZU MOTORS LTD
发明人： NIHONGI SHIGERU , TAKAHASHI HIROTAKA , MINEZAWA MASANOBU , SUZUKI YUTAKA , TAKAHASHI KOUICHI , FUKUOKA TAKESHI
IPC分类号： F01N3/08 , F01N3/20
CPC分类号： F01N3/208 , F01N2550/05 , F01N2560/026 , F01N2610/148 , F01N2900/1814 , F01N2900/1818 , Y02A50/2325 , Y02T10/24
摘要： Provided is a urea water consumption diagnostic device for urea SCR, capable of detecting if a pressurized fluid feed line or a dosing valve has been clogged or stuck with a foreign matter, or if the urea water has been left to continue spraying from the dosing valve. The urea water consumption diagnostic device for urea SCR includes a urea water sensor (22) that detects a level of the urea water (U) in a urea water tank (15), spray volume instruction means (30) that instructs a volume of urea water to be sprayed from the dosing valve (12) in accordance with NOx in an exhaust gas, instructed spray volume addition means (31) that adds up the instructed spray volumes instructed by the spray volume instruction means (30), consumption volume calculation means (32) that calculates a cumulative consumption volume (D) from a detection value input from the urea water sensor (22), and abnormality diagnostic means (33) that compares a cumulative instructed spray volume (P) from the instructed spray volume addition means (31) to the cumulative consumption volume (D) from the consumption volume calculation means (32) and determines whether the urea water spraying by the dosing valve (12) is normal or abnormal.

8. 发明公开

EP2573344A4 VALIDITY DIAGNOSIS SYSTEM FOR UREA WATER TEMPERATURE SENSOR 有权
标题翻译： GÜLTIGKEITSDIAGNOSESYSTEMFÜREINEN HARNSTOFFTEMPERATURSENSOR
公开(公告)号：EP2573344A4
公开(公告)日：2016-04-13
申请号：EP11783504
申请日：2011-05-16
申请人： ISUZU MOTORS LTD
发明人： TAKAHASHI HIROTAKA , HAMAGUCHI YOSHINORI , MIZUTANI MASASHI
IPC分类号： F01N3/08 , F01N3/00 , F01N3/20
CPC分类号： F01N11/00 , F01N3/2066 , F01N2550/05 , F01N2560/06 , F01N2900/0416 , F01N2900/08 , F01N2900/12 , F01N2900/1811 , F01N2900/1814 , Y02A50/2325 , Y02T10/24 , Y02T10/47
摘要： Provided is a competence diagnosis system for a urea water temperature sensor that can prevent a misdiagnosis when urea water is replenished in a urea tank. A competence diagnosis system for a urea water temperature sensor 129 includes a competence diagnosis unit 127 that diagnoses a failure of a temperature sensor 121 provided in a urea tank 105 by comparing a urea water temperature measured by the temperature sensor 121 with an ambient temperature. The competence diagnosis system for a urea water temperature sensor 129 includes a urea water level condition determination unit 128 that stores a urea water level, which is measured by a level sensor 120 provided in the urea tank 105, in a storage unit 130 immediately before key-off, obtains a level difference between the urea water level stored in the storage unit 130 and a current urea water level after key-on, and allows a diagnosis by the competence diagnosis unit 127 through temperature comparison when the level difference is less than or equal to a predetermined threshold value.
摘要翻译：提供了一种用于尿素水温度传感器的能力诊断系统，其可以防止在尿素罐中补充尿素水时的误诊。用于尿素水温度传感器129的能力诊断系统包括能力诊断单元127，其通过将由温度传感器121测量的尿素水温度与环境温度进行比较来诊断设置在尿素箱105中的温度传感器121的故障。尿素水温传感器129的能力诊断系统包括：尿素水位状态判定部128，其将由尿素箱105内的液位传感器120测定的尿素水位存储在紧接着的键的存储部130内在存储单元130中存储的尿素水位与紧接着的尿素水位之间的水平差，得到能力诊断部127通过温度比较进行的诊断，当水平差小于或等于等于预定的阈值。

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