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    UREA WATER CONSUMPTION AMOUNT DIAGNOSTIC DEVICE FOR UREA SCR
    91.
    发明公开
    UREA WATER CONSUMPTION AMOUNT DIAGNOSTIC DEVICE FOR UREA SCR 审中-公开
    尿素水消耗量尿素SCR诊断装置

    公开(公告)号：EP2963260A1

    公开(公告)日：2016-01-06

    申请号：EP14743139.9

    申请日：2014-01-15

    申请人： Isuzu Motors, Ltd.

    发明人： NIHONGI, Shigeru ,  FUKUOKA, Takeshi ,  MINEZAWA, Masanobu

    IPC分类号： F01N3/18 ,  F01N3/08 ,  G01F23/30

    CPC分类号： F01N3/208 ,  F01N3/2896 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/1806 ,  F01N2900/1814 ,  G01F1/00 ,  G01F23/0069 ,  G01F23/64 ,  G01N33/18 ,  Y02T10/24

    摘要： Provided is a urea water consumption amount diagnostic device for urea SCR which calculates an appropriate urea water consumption amount taking into account quantization errors of a urea water sensor due to replenishment. Based on the calculated amount, the urea water consumption amount diagnostic device performs a comparison with a cumulative injected amount, which is injected from a dosing valve, to detect abnormality in the dosing valve and/or other components. The urea water consumption amount diagnostic device includes a urea water sensor (22) which detects a level of urea water in a urea water tank (15), a consumed amount calculation means (32) which calculates a cumulative consumed amount (D) by calculating the cumulative consumed amount (D) based on a detection value entered from the urea water sensor (22) and calculating the replenishment amount (R) based on the change in level of the urea water sensor (22) after replenishment of the urea water, and an abnormality diagnostic means (33) which, when the cumulative instructed injection amount (P) of the urea water injected from the dosing valve (12) has become greater than or equal to a determination amount L, determines whether or not there is clogging of the urea water by comparing the cumulative consumed amount (D) to the cumulative instructed injection amount (P). The consumed amount calculation means (32) subtracts 1 level from the changed level of the urea water sensor upon replenishment to the urea water tank (15), and stores the resulting level as the replenishment amount.

    摘要翻译： 本发明提供一种尿素SCR用尿素水消耗量诊断装置，其考虑尿素水传感器的补充量化误差来计算适当的尿素水消耗量。 基于计算出的量，尿素水消耗量诊断装置与从定量阀喷射的累积喷射量进行比较，以检测定量阀和/或其他部件中的异常。 尿素水消耗量诊断装置具有：检测尿素水箱（15）内的尿素水的水位的尿素水传感器（22）;消耗量计算单元（32），其计算累计消耗量（D） 基于从尿素水传感器（22）输入的检测值计算累计消耗量（D），并基于补充尿素水后的尿素水传感器（22）的水位变化计算补给量（R） 和异常诊断单元（33），当从定量阀（12）喷射的尿素水的累计指示喷射量（P）变为判定量L以上时，判定是否堵塞 通过比较累计消耗量（D）和累计指示喷射量（P）来计算尿素水的量。 消耗量计算装置（32）在向尿素水箱（15）补充时，从尿素水传感器的改变水平中减去1水平，并将所得水平作为补充量存储。

    EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE
    98.
    发明公开
    EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化装置

    公开(公告)号：EP2759684A1

    公开(公告)日：2014-07-30

    申请号：EP11872718.9

    申请日：2011-09-20

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： SHIRASAWA, Takeru ,  OGISO, Makoto ,  NOGI, Yoshito

    IPC分类号： F01N3/00 ,  B01D53/94 ,  F01N3/023 ,  F01N3/025 ,  F01N3/029 ,  F01N3/08 ,  F01N3/18 ,  F01N3/24

    CPC分类号： B01D53/9495 ,  B01D53/9409 ,  B01D2251/2067 ,  F01N3/035 ,  F01N3/2066 ,  F01N2560/05 ,  F01N2610/02 ,  F01N2610/1493 ,  F01N2900/0408 ,  F01N2900/1404 ,  F01N2900/1411 ,  Y02T10/24

    摘要： A decrease in determination accuracy on filter trouble due to a decrease in detection accuracy of a PM sensor is restricted. A filter, a selective reduction type NOx catalyst provided on a downstream of the filter, the PM sensor detecting an amount of PM on a downstream of the selective reduction type NOx catalyst, and a removal section conducting a process for removing a reducing agent attached to the PM sensor in a case where at least one of conditions is satisfied that a temperature of the selective reduction type NOx catalyst is equal to or lower than a threshold, that a temperature of the exhaust is equal to or lower than a threshold, that a flow rate of the exhaust is equal to or higher than a threshold, and that an adsorption amount of the reducing agent in the selective reduction type NOx catalyst is equal to or larger than a threshold are included.

    摘要翻译： 限制由于PM传感器的检测精度降低而引起的过滤器故障的判定精度下降。 过滤器，设置在过滤器下游的选择性还原型NOx催化剂，PM传感器检测选择还原型NOx催化剂下游的PM量，以及去除部，进行除去附着于 在满足以下条件中的至少一个条件的情况下的PM传感器：选择还原型NOx催化剂的温度等于或低于阈值，排气温度等于或低于阈值，a 排气的流量为阈值以上，选择还原型NOx催化剂中的还原剂的吸附量为阈值以上。

    FAULT DIAGNOSIS DEVICE FOR REDUCING AGENT SUPPLY DEVICE, AND REDUCING AGENT SUPPLY DEVICE
    100.
    发明公开
    FAULT DIAGNOSIS DEVICE FOR REDUCING AGENT SUPPLY DEVICE, AND REDUCING AGENT SUPPLY DEVICE 有权
    故障诊断装置对设备发出对问题进行还原剂的还原剂和设备

    公开(公告)号：EP2660437A1

    公开(公告)日：2013-11-06

    申请号：EP11854191.1

    申请日：2011-09-07

    申请人： Bosch Corporation

    发明人： NAGATA Masayasu

    IPC分类号： F01N3/36 ,  F01N3/08 ,  F01N3/18

    CPC分类号： F01N3/08 ,  F01N3/2066 ,  F01N11/00 ,  F01N2550/05 ,  F01N2550/14 ,  F01N2560/08 ,  F01N2610/02 ,  F01N2610/1433 ,  F01N2610/144 ,  F01N2610/146 ,  F01N2900/0416 ,  F01N2900/0418 ,  F01N2900/1806 ,  F01N2900/1808 ,  F01N2900/1821 ,  F01N2900/1822 ,  Y02T10/24 ,  Y02T10/47

    摘要： [Problem] To provide a reducing agent supply apparatus abnormality diagnosis unit that can reduce the limitation on when to perform abnormality diagnosis and on the applicability of abnormality diagnosis to facilitate the implementation of abnormality diagnosis of a reducing agent supply apparatus and to provide the reducing agent supply apparatus.
    [Means for Resolution] The reducing agent supply apparatus abnormality diagnosis unit includes: a reducing agent injection valve controller for determining an energization on/off duty ratio according to an instructed injection amount of the reducing agent to issue an instruction for driving the reducing agent injection valve; a pump controller for determining an energization on/off duty ratio to issue an instruction for driving the pump so that the pressure in the reducing agent passage is maintained at a predetermined system pressure, based on the difference between the detected pressure in the reducing agent passage and the system pressure; and an abnormality determiner for performing abnormality determination of the reducing agent supply apparatus based on the duty ratio of the reducing agent injection valve and the duty ratio of the pump in a predetermined period.

    摘要翻译： [问题]为了提供一种还原剂供给装置的异常诊断单元确实可以减少对何时执行异常诊断和异常诊断的适用性的限制，以便于还原剂供给装置的异常诊断的执行，并提供还原剂 供给装置。 [用于解决所述还原剂供给装置的异常诊断单元，包括：用于通电的确定性采矿开/关占空比雅丁于在还原剂的指示的喷射量的还原剂喷射阀控制器上的指令发出用于驱动还原剂喷射 阀门; 用于开/关占空比问题上指令通电确定性采矿泵控制器用于驱动泵所以没有在还原剂路径内的压力被保持在一个预定的系统压力的基础上，在还原剂通路所检测到的压力之间的差 和系统压力; 和异常判断用于执行基于该还原剂喷射阀的占空比和所述泵的在预定时段的占空比还原剂供给装置的异常判定。