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    EQUIPMENT AND METHOD FOR DETERMINING CATALYST DETERIORATION
    2.
    发明公开
    EQUIPMENT AND METHOD FOR DETERMINING CATALYST DETERIORATION 有权
    一种用于确定磨损催化剂和方法用于确定穿催化剂

    公开(公告)号：EP2415983A4

    公开(公告)日：2013-04-24

    申请号：EP09815424

    申请日：2009-03-31

    Applicant: TOYOTA MOTOR CO LTD

    Inventor： HAGIMOTO TAIGA ,  SHIBATA DAISUKE

    IPC: F01N3/08

    CPC classification number: F01N11/002 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/14 ,  Y02T10/24 ,  Y02T10/47

    Abstract: The degree of deterioration of a catalyst is obtained accurately in cases where a plurality of catalysts is disposed at an exhaust passage of an internal combustion engine. Under the assumption that the degree of deterioration of a catalyst which is disposed at a location upstream of an NO 2 selective reduction catalyst and has an oxidizing ability is at a predetermined value, the ratio of NO 2 in the NO x which inflows into the NO x selective reduction catalyst is estimated; the NO x removal rate of the NO x selective reduction catalyst is calculated a plurality of times at least until a local maximum value is obtained; and the degree of deterioration of the catalyst having an oxidizing ability is determined by comparison between the ratio of NO 2 observed when the NO x removal rate of the NO x selective reduction catalyst reaches the local maximum value and a reference value of the ratio.

    BREAKDOWN DETERMINATION SYSTEM FOR EXHAUST PURIFICATION DEVICE
    4.
    发明公开
    BREAKDOWN DETERMINATION SYSTEM FOR EXHAUST PURIFICATION DEVICE 有权
    ERMITTLUNGSSYSTEMFÜRBETRIEBSAUSFLELLE EINER ABGASREINIGUNGSVORRICHTUNG

    公开(公告)号：EP2930325A4

    公开(公告)日：2016-08-03

    申请号：EP13860518

    申请日：2013-12-06

    Applicant: TOYOTA MOTOR CO LTD

    Inventor： MATSUMOTO ARIFUMI ,  KIDOKORO TORU ,  HAGIMOTO TAIGA ,  TAKAOKA KAZUYA ,  NISHIJIMA HIROKAZU ,  TERUI YUKI ,  UOZUMI AKIFUMI

    IPC: F01N3/20 ,  B01D53/94 ,  F01N11/00

    CPC classification number: F01N3/2066 ,  B01D53/9404 ,  B01D53/9495 ,  B01D2251/2067 ,  F01N3/035 ,  F01N3/106 ,  F01N3/208 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2550/05 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2610/1453 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1616 ,  F01N2900/1621 ,  F01N2900/1622 ,  F01N2900/1806 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

    Abstract: In a failure determination system that performs failure determination of an exhaust gas purification apparatus having a NOx selective catalytic reduction catalyst (NOx catalyst) that is disposed in an exhaust passage of an internal combustion engine and uses ammonia as a reducing agent, the failure determination of the exhaust gas purification apparatus is performed by a failure determination unit, based on a detected value of a NOx sensor that detects NOx in exhaust gas. Then, based on an adsorption amount difference at assumed failure that is the difference between an ammonia equilibrium adsorption amount in the NOx catalyst in an equilibrium state of ammonia adsorption, assuming that the exhaust gas purification apparatus is in a predefined failure state, and an actual ammonia adsorption amount in the NOx catalyst, the failure determination itself by the failure determination unit is inhibited or the use of the NOx sensor in the failure determination is restricted. Accordingly, in the failure determination system of exhaust gas purification apparatus having the NOx selective catalytic reduction catalyst, erroneous determinations at the time of failure determination are suppressed, thereby further improving the accuracy of the failure determination.

    Abstract translation: 在具有配置在内燃机的排气通路中并使用氨作为还原剂的NOx选择催化还原催化剂（NOx催化剂）的排气净化装置的故障判定系统中，故障判定系统 废气净化装置由故障确定单元基于检测废气中的NOx的NOx传感器的检测值进行。 然后，假设假定故障时的吸附量差异为氨吸附平衡状态下的NOx催化剂中的氨平衡吸附量之间的差异，假设废气净化装置处于预定的失效状态，实际上 NOx催化剂中的氨吸附量，故障判定单元的故障判定本身被抑制，或者在故障判定中使用NOx传感器受到限制。 因此，在具有NOx选择催化还原催化剂的废气净化装置的故障判定系统中，抑制故障判定时的错误判定，进一步提高故障判定的准确性。

    ERROR DIAGNOSTIC DEVICE FOR EXHAUST PURIFICATION DEVICE
    6.
    发明公开
    ERROR DIAGNOSTIC DEVICE FOR EXHAUST PURIFICATION DEVICE 有权
    排气净化装置的故障诊断装置

    公开(公告)号：EP3006690A4

    公开(公告)日：2016-06-08

    申请号：EP14804640

    申请日：2014-05-29

    Applicant: TOYOTA MOTOR CO LTD

    Inventor： KOGO TOMOYUKI ,  OGISO MAKOTO ,  HAGIMOTO TAIGA ,  MATSUMOTO ARIFUMI ,  TAKAOKA KAZUYA ,  NISHIJIMA HIROKAZU ,  FURUI KENJI

    IPC: F01N3/20 ,  F01N3/00 ,  F01N3/08 ,  F01N3/24 ,  F01N11/00 ,  F01N13/00

    CPC classification number: F01N11/007 ,  F01N3/2066 ,  F01N3/208 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/1453 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1616 ,  F02M26/06 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

    Abstract: An object of the invention is to suppress a reduction in accuracy of abnormality diagnosis with an abnormality diagnosis device for an exhaust gas control apparatus that performs the abnormality diagnosis regarding the exhaust gas control apparatus by using the amount of NO x flowing into an SCR catalyst as a parameter. In the abnormality diagnosis device for an exhaust gas control apparatus according to the invention provided with an exhaust gas control apparatus including the SCR catalyst, a supply device supplying ammonia to the exhaust gas control apparatus, an EGR device allowing some of exhaust gas to flow back to an intake passage from an exhaust passage further downstream than the supply device, acquiring means for acquiring a NO x inflow amount as the amount of NO x flowing into the exhaust gas control apparatus, and diagnostic means for diagnosing an abnormality of the exhaust gas control apparatus by using the NO x inflow amount acquired by the acquiring means as a parameter, the abnormality diagnosis regarding the exhaust gas control apparatus by the diagnostic means is prohibited in a case where the amount of the ammonia allowed to flow back along with the exhaust gas by the EGR device exceeds an upper limit value.

    Abstract translation: 本发明的目的是通过使用流入SCR催化剂的NO x量对排气控制装置进行异常诊断的排气控制装置的异常诊断装置，抑制异常诊断的精度降低 一个参数。 在本发明的排气控制装置的异常诊断装置中，具备包括SCR催化剂的排气控制装置，向排气控制装置供给氨的供给装置，使废气排出一部分的EGR装置 到从供给装置进一步下游的排气通道的进气通道，获取装置，用于获取作为流入废气控制装置的NO x量的NO x流入量，以及用于诊断废气控制异常的诊断装置 通过使用由获取装置获取的NO x流入量作为参数的设备，在废气排出量与氨流量一起返回的情况下，禁止通过诊断装置的排气控制装置的异常诊断 通过EGR装置超过上限值。

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