公开(公告)号：EP2581576A8

公开(公告)日：2013-09-25

申请号：EP11837288.7

申请日：2011-08-29

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： BISAIJI, Yuki ,  YOSHIDA, Kohei ,  INOUE, Mikio

IPC分类号： F01N3/08 ,  F01N3/36 ,  F02D41/04

CPC分类号： F02D41/1408 ,  B01D53/9409 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2073 ,  F01N2510/06 ,  F01N2610/03 ,  F01N2900/0601 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1411 ,  F01N2900/1614 ,  F01N2900/1621 ,  F02D41/0275 ,  F02D41/1461 ,  F02D41/405 ,  F02D2200/0806 ,  F02D2200/0811

摘要： An exhaust purification system of an internal combustion engine is provided with an exhaust purification catalyst where NO x which is contained in exhaust gas and modified hydrocarbons react. The exhaust purification catalyst carries precious metal catalysts and is formed with a basic exhaust gas flow surface part. The exhaust purification catalyst has the property of reducing NO x if making the concentration of hydrocarbons which flow into the exhaust purification catalyst vibrate by within a predetermined range of amplitude and within a predetermined range of period. The system estimates the holding ability by which the NO x in the exhaust gas is held on the basic exhaust gas flow surface part of the exhaust purification catalyst and, when the holding ability becomes less than a predetermined judgment value of the holding ability, makes the concentration of hydrocarbons which flow into the exhaust purification catalyst rise.

摘要翻译： 内燃机的排气净化装置具备排气净化催化剂，排气中含有的NOx与改性烃反应。 排气净化催化剂承载贵金属催化剂并形成有碱性排气流动表面部分。 如果使流入排气净化催化剂的烃的浓度在规定的振幅范围内且在规定的范围内振动，则排气净化催化剂具有使NOx还原的性质。 该系统估计废气中的NOx保持在排气净化催化剂的碱性废气流动表面部分上的保持能力，并且当保持能力变得低于保持能力的预定判定值时，使得浓度 流入排气净化催化剂的烃的量增加。

公开(公告)号：EP2567077A1

公开(公告)日：2013-03-13

申请号：EP11778101.3

申请日：2011-05-02

申请人： Cummins Inc.

发明人： GEVECI, Mert ,  OSBURN, Andrew, W.

IPC分类号： F01N3/00

CPC分类号： F01N3/208 ,  F01N13/0093 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0402 ,  F01N2900/0408 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1616 ,  F01N2900/1621 ,  F01N2900/1622 ,  Y02T10/24

摘要： A system includes an internal combustion engine, an exhaust conduit fluidly coupled to the internal combustion engine and an SCR catalyst, and a reductant doser operationally coupled to the exhaust conduit at a position upstream of the SCR catalyst. The reductant doser is responsive to a reductant doser command. The system includes a controller having a number of modules functionally structured to execute operations to compensate for transient operation of the system. An NH3 target module interprets a reductant amount target that is a target amount of reductant in the exhaust conduit at a position upstream of the SCR catalyst. A transient adjustment module detects a transient event in the SCR catalyst and provides an adjusted reductant amount target in response to the transient event and the reductant amount target. A dosing control module provides the reductant doser command in response to the adjusted reductant amount target.

公开(公告)号：EP2529092A1

公开(公告)日：2012-12-05

申请号：EP11737360.5

申请日：2011-01-25

申请人： Scania CV AB

发明人： WESTERBERG, Björn

IPC分类号： F01N3/20 ,  F01N9/00

CPC分类号： F01N3/208 ,  F01N9/005 ,  F01N11/00 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2900/0406 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1616 ,  F01N2900/1621 ,  Y02T10/24 ,  Y02T10/47

摘要： The present invention comprises a method and a system for estimation of a deviation for at least one model variable of a catalyst model, which estimation is based on the catalyst model and on at least one measured sensor signal from at least one sensor which is so situated that it comes into contact with exhaust gases downstream from a catalyst. According to the present invention, an actual signal is compared with an estimated signal, such that said actual signal depends on said measured sensor signal and that said estimated signal depends on at least one estimation function and represents the catalyst model's match with said actual signal, said catalyst model being spatially resolved. This comparison is thereafter used to determine at least one deviation parameter for the respective one or more estimation functions, such that each of these at least one deviation parameters describes a relation between a value for a model variable of a catalyst model and a corresponding actual value.

公开(公告)号：EP2516816A2

公开(公告)日：2012-10-31

申请号：EP10842735.2

申请日：2010-12-21

申请人： Cummins IP, Inc.

发明人： WILHELM, Daniel D. ,  OWUSU, Kwadwo O. ,  EVANS, April ,  LIN, Xiao ,  KERN, Robert ,  MITCHELL, Douglas Alan ,  FARRELL, Lisa

IPC分类号： F01N11/00 ,  F01N3/18 ,  B01D53/94 ,  F01N3/023

CPC分类号： F01N13/009 ,  F01N3/021 ,  F01N3/023 ,  F01N3/106 ,  F01N3/208 ,  F01N11/00 ,  F01N2550/05 ,  F01N2610/02 ,  F01N2610/1493 ,  F01N2900/0422 ,  F01N2900/08 ,  F01N2900/1602 ,  F01N2900/1606 ,  F01N2900/1621 ,  F02D41/0235 ,  F02D41/024 ,  F02D41/027 ,  F02D41/1441 ,  F02D41/1448 ,  F02D41/1461 ,  F02D41/1463 ,  Y02T10/24 ,  Y02T10/47

摘要： According to one embodiment, described herein is an apparatus for mitigating on-board diagnostic (OBD) faults generated by an OBD system of an internal combustion engine (ICE) system (10) having a selective catalytic reduction system (230) with a diesel exhaust fluid (DEF) decomposition tube (239). The apparatus includes a fault mitigation module (320) that is configured to monitor at least one OBD signal of the OBD system and issue a request (325) for regenerating the DEF decomposition tube when a value of the at least one OBD signal reaches a predetermined regeneration threshold corresponding with the at least one OBD signal. The regeneration threshold is reachable prior to an OBD fault threshold corresponding with the at least one OBD signal. The apparatus also includes a regeneration module (340) that is configured to regenerate the DEF decomposition tube according to the issued request.

摘要翻译： 根据一个实施例，本文描述了用于缓解由具有柴油机排气的选择性催化还原系统（230）的内​​燃机（ICE）系统（10）的OBD系统产生的车载诊断（OBD） 流体（DEF）分解管（239）。 该设备包括故障减轻模块（320），该模块被配置成监测OBD系统的至少一个OBD信号并且当至少一个OBD信号的值达到预定值时发出用于再生DEF分解管的请求（325） 再生阈值与所述至少一个OBD信号相对应。 再生阈值在与至少一个OBD信号相对应的OBD故障阈值之前是可达的。 该装置还包括再生模块（340），该再生模块（340）被配置为根据所发出的请求来再生DEF分解管。

公开(公告)号：EP2501910A1

公开(公告)日：2012-09-26

申请号：EP10785130.5

申请日：2010-10-18

申请人： Peugeot Citroën Automobiles SA

发明人： CHARIAL, Christophe ,  GRISE, Clément

IPC分类号： F01N11/00 ,  F01N3/20 ,  F01N3/023

CPC分类号： F01N3/208 ,  F01N3/0231 ,  F01N3/103 ,  F01N3/106 ,  F01N9/005 ,  F01N11/00 ,  F01N13/009 ,  F01N2610/02 ,  F01N2900/0411 ,  F01N2900/0412 ,  F01N2900/1621 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： The invention relates to a method for controlling a system for the treatment of exhaust gases in an exhaust line of an internal combustion engine. The invention is characterised in that it consists in estimating the molar ratio of nitrogen dioxide to nitrogen monoxide at the inlet of an NOx selective reduction catalyst based on a cartography that is dependent on the residence time of the exhaust gases in an oxidation catalyst disposed upstream of the gas treatment means leading to a reduction in nitrogen oxides.

公开(公告)号：EP2466087A1

公开(公告)日：2012-06-20

申请号：EP11189862.3

申请日：2011-11-21

申请人： Peugeot Citroën Automobiles SA

发明人： Leonardon, Mathilde ,  Chaillou, Christophe ,  Georgiadis, Evangelos ,  Vandevelde, Bruno ,  Bizet, Charles

IPC分类号： F01N11/00 ,  F01N3/20

CPC分类号： F01N11/00 ,  F01N3/208 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1621 ,  F01N2900/1622 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： L'invention se rapporte à un procédé de diagnostic d'un système de réduction catalytique sélective (130) ayant un pain de réduction catalytique pour un véhicule comprenant un moteur (100) connecté à une ligne d'échappement, le procédé comprenant
- la mesure des émissions de NO x dans la ligne d'échappement,
- la comparaison des émissions de NO x à une valeur seuil,
caractérisé en ce que le procédé comprend en outre, la détermination de conditions favorables à l'établissement d'un diagnostic et, le cas échéant, l'établissement d'un diagnostic de fonctionnement du système de réduction catalytique sélective en fonction de la comparaison.
L'invention se rapporte aussi à un véhicule comprenant une unité de commande apte à mettre en oeuvre le procédé

摘要翻译： 该方法包括测量排气管中氮氧化物的排放。 将氮氧化物发射与阈值进行比较。 确定有利于建立车载诊断（OBD）的条件，其中基于比较建立选择性催化还原系统（SCRS）（130）的诊断操作。 如果诊断显示SCRS失败，则确定发出警告信号。 有利于建立诊断的条件包括在预定变化范围内检测发动机转矩。 还包括用于包括发动机的车辆的独立权利要求。

公开(公告)号：EP2439386A1

公开(公告)日：2012-04-11

申请号：EP11184211.8

申请日：2011-10-06

申请人： Zayan, Nicholas Michael

发明人： Zayan, Nicholas Michael

IPC分类号： F01N3/20 ,  F01N9/00 ,  B01D53/94

CPC分类号： F01N3/208 ,  B01D53/9418 ,  B01D53/9495 ,  B01D2251/206 ,  B01D2258/012 ,  F01N9/005 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/0404 ,  F01N2900/0408 ,  F01N2900/0411 ,  F01N2900/0416 ,  F01N2900/1402 ,  F01N2900/1616 ,  F01N2900/1621 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

摘要： In one implementation of the disclosed technique, a NOx sensor polynomial algorithm is used to discriminate between NOx and ammonia emission. The polynomial algorithm uses the SCR's time constant property to infer the "loading state" of the SCR and estimate both the NOx conversion and quantity of ammonia slip. The polynomial algorithm assesses this by differentially analyzing the upstream and downstream NOx sensor signals through a comparison of the polynomial coefficients.

摘要翻译： 在所公开的技术的一个实现中，使用NOx传感器多项式算法来区分NOx和氨的排放。 多项式算法使用SCR的时间常数来推断SCR的“负载状态”，并估算NOx转化率和氨气量。 多项式算法通过多项式系数的比较差异分析上游和下游的NOx传感器信号来评估这一点。

公开(公告)号：EP2401485A1

公开(公告)日：2012-01-04

申请号：EP10704544.5

申请日：2010-02-10

申请人： Emitec Gesellschaft für Emissionstechnologie mbH

发明人： MAUS, Wolfgang ,  BRÜCK, Rolf

IPC分类号： F01N3/20 ,  F01N11/00

CPC分类号： F01N3/2066 ,  F01N3/106 ,  F01N11/00 ,  F01N11/002 ,  F01N13/009 ,  F01N2550/02 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2900/1621 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： The invention relates to a method for operating an exhaust gas system comprising at least one oxidation catalyst and at least one arrangement suitable for selective catalytic reduction, having at least one measuring probe for determining the effectiveness of the arrangement, wherein the method involves at least determining a conversion effectiveness of the arrangement using the at least one measuring probe and calculating an effectiveness of the nitrogen monoxide conversion in the oxidation catalyst from the determined conversion effectiveness. Using the method according to the invention, an estimate of the effectiveness of the nitrogen monoxide conversion to nitrogen dioxide of an oxidation catalyst in the exhaust gas system can be obtained without additional measuring probes in or on the oxidation catalyst. This reduces the maintenance frequency of the exhaust gas system and at the same time enables precise regulation of the exhaust gas conversion as a whole.

公开(公告)号：EP2347104A1

公开(公告)日：2011-07-27

申请号：EP09752787.3

申请日：2009-11-05

申请人： Valeo Systemes De Controle Moteur

发明人： SERRA, Bruno ,  FOURET, Rémi

IPC分类号： F01N3/20 ,  F01N11/00

CPC分类号： F01N11/007 ,  F01N3/20 ,  F01N2550/02 ,  F01N2560/025 ,  F01N2560/14 ,  F01N2900/1621 ,  Y02A50/2322 ,  Y02T10/47

摘要： The invention relates to a method for diagnosing the performance of a catalytic converter (3) of a petrol automobile onboard the vehicle, the catalytic converter being mounted on the exhaust line (1) of the vehicle, wherein said method comprises placing two oxygen probes (5, 6) on the exhaust line (1) upstream and downstream from the converter (3), respectively, analysing the signals (7, 16) thereof, and comparing the signal (16) of the downstream probe (6) with a threshold in order to carry out a passive diagnosis during a first period of the lifespan of the converter (3), after which, during a last period of the converter (3) lifespan, an intrusive diagnosis of the converter (3) performance is carried out using the two probes (5, 6) and a diagnosis automaton, by measuring the oxygen storage capacity of the converter (3).

公开(公告)号：EP2320043A1

公开(公告)日：2011-05-11

申请号：EP10197409.5

申请日：2008-05-20

申请人： Honda Motor Co., Ltd.

发明人： Yasui, Yuji ,  Kawasumi, Ikue

IPC分类号： F01N3/20 ,  F01N9/00 ,  F01N11/00

CPC分类号： F01N3/208 ,  F01N9/00 ,  F01N9/005 ,  F01N11/00 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/0404 ,  F01N2900/0408 ,  F01N2900/0411 ,  F01N2900/0412 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1621 ,  F01N2900/1814 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine (3), capable of supplying a just enough amount of reducing agent to a selective reduction catalyst (7) even when a NOx purification ratio of the catalyst is changed by various causes, thereby enabling a high NOx purification ratio and very low exhaust emissions to be maintained. An ECU (2) calculates a filtered value based on a signal from an exhaust gas concentration sensor (22), calculates a moving average value of a product of the filtered value and a reference input, calculates a control input such that the moving average value becomes equal to 0, and adds a reference input to the control input to calculate a FB injection amount. The ECU calculates a FF injection amount with a predetermined feedforward control algorithm, and adds the FF injection amount to the FB injection amount, to thereby calculate a urea injection amount.

摘要翻译： 即使催化剂的NOx净化率由于各种原因而变化，也能够向选择还原催化剂（7）供给足够量的还原剂的内燃机（3）的废气排放控制装置， 高NOx净化比和非常低的废气排放。 ECU（2）基于来自排气浓度传感器（22）的信号计算滤波值，计算滤波值与基准输入的乘积的移动平均值，算出移动平均值 变为等于0，并将参考输入添加到控制输入以计算FB注入量。 ECU使用预定的前馈控制算法计算FF喷射量，并将FF喷射量与FB喷射量相加，从而计算尿素喷射量。