公开(公告)号：EP2899379B1

公开(公告)日：2018-11-21

申请号：EP14152280.5

申请日：2014-01-23

Applicant: Delphi International Operations Luxembourg S.à r.l.

Inventor： Schmitt, Julien ,  Parmentier, Michael

IPC: F01N3/20 ,  F01N3/035 ,  F01N9/00 ,  B01D53/94 ,  F01N13/00 ,  F01N13/02

CPC classification number: B01D53/9418 ,  B01D53/9431 ,  B01D53/9495 ,  B01D2255/904 ,  B01D2255/911 ,  B01D2255/915 ,  F01N3/035 ,  F01N3/208 ,  F01N9/00 ,  F01N9/005 ,  F01N13/009 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2900/1602 ,  F01N2900/1616 ,  Y02T10/24 ,  Y02T10/47

Abstract: A method of controlling a catalytic exhaust system including a first catalytic unit located upstream of a second catalytic unit, comprising: i) providing a relationship between the temperature of the first catalytic unit, the amount of NH3 stored in the second catalytic unit and the corresponding limit value of the amount of NH3 permitted in the first unit; ii) measuring or estimating the amount of NH3 in the second catalytic unit; iii) measuring or estimating the temperature of the first catalytic unit; iv) using said relationship and measured/estimated parameters of steps ii) and iii) to providing a said limit value for the amount of NH3 to be stored in said first catalytic unit v) using said parameter from iv) in the control of said system.

公开(公告)号：EP3401522A1

公开(公告)日：2018-11-14

申请号：EP18171068.2

申请日：2018-05-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： OOMUKAI, Rio

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

CPC classification number: F01N9/00 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9477 ,  B01D53/9495 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2900/0416 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1614 ,  F01N2900/1621 ,  F01N2900/1622

Abstract: An exhaust gas control system for an internal combustion engine (1) includes: a first catalyst (4a) disposed on an exhaust passage for the internal combustion engine (1), the first catalyst (4a) being a NOx storage reduction catalyst; a second catalyst (6) disposed on the exhaust passage at a position downstream of the first catalyst (4a), the second catalyst (6) being a NOx selective catalytic reduction catalyst; a first NOx sensor (N2) mounted on the exhaust passage at a position between the first catalyst (4a) and the second catalyst (6); a second NOx sensor (N3) mounted on the exhaust passage at a position downstream of the second catalyst (6); and an electronic control unit (10). The electronic control unit (10) is configured to evaluate NOx reducing performance of the second catalyst (6) based on a value detected by the first NOx sensor (N2) and a value detected by the second NOx sensor (N3), when an evaluation condition is satisfied.

公开(公告)号：EP3377198A1

公开(公告)日：2018-09-26

申请号：EP16797883.2

申请日：2016-11-16

Applicant: Shell Internationale Research Maatschappij B.V.

Inventor： GOES, Marinus Franciscus ,  MORELLO, Bradley Douglas

IPC: B01D53/86

CPC classification number: B01D53/8628 ,  B01D53/8625 ,  B01D53/9427 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2255/20738 ,  B01J23/28 ,  B01J23/30

Abstract: The present invention provides a process for the treatment of a NOX-containing gas stream, said NOX-containing gas stream containing NO2 and NO in a molar ratio of NO2:NO of at least 1:1, to remove at least a portion of the NOX contained therein, said process comprising: i) providing an additional gas stream comprising NO to the NOX-containing gas stream, such that the molar ratio of NO2:NO in the NOX-containing gas stream is reduced to be less than 1:1; and ii) then passing the NOX-containing gas stream through a catalyst bed comprising a deNOX catalyst under suitable conditions to reduce the level of NOX in the gas stream and thus produce a deNOX treated gas stream, said deNOX treated gas stream containing a reduced amount of NOX.

公开(公告)号：EP2998531B1

公开(公告)日：2018-09-26

申请号：EP14772872.9

申请日：2014-02-14

Applicant: Bosch Corporation

Inventor： WATANABE Masanori ,  TANIOKA Kenichi

IPC: F01N3/08 ,  B01D53/94 ,  F01N3/02 ,  F01N3/023 ,  F01N3/025 ,  F01N3/029 ,  F01N3/24 ,  F01N9/00

CPC classification number: F01N3/208 ,  B01D53/94 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9459 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/2067 ,  F01N3/02 ,  F01N3/021 ,  F01N3/023 ,  F01N3/025 ,  F01N3/029 ,  F01N3/08 ,  F01N3/24 ,  F01N9/00 ,  F01N9/002 ,  F01N11/002 ,  F01N2550/05 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/11 ,  F01N2610/144 ,  F01N2610/146 ,  F01N2610/1493 ,  F01N2900/0422 ,  F01N2900/08 ,  F01N2900/1602 ,  F01N2900/1811 ,  Y02T10/24 ,  Y02T10/47

Abstract: To provide an exhaust purifying system and a method for controlling the exhaust purifying system that avoid occurrence of clogging, breakage, or the like of a reducing agent injection valve caused by the solidification of a reducing agent and prevent reduction in the efficiency of reducing agent recovery processing and exhaust gas purification. An exhaust purifying system and a method for controlling the exhaust purifying system according to an aspect of the present invention is configured to detect the injection valve temperature of the reducing agent injection valve according to detection of turn-off of an ignition switch for stopping the internal combustion engine or detection of an injection stop of the reducing agent injection valve, whichever is earlier, calculate the waiting time until reducing agent recovery processing starts based on the injection valve temperature, and permits the reducing agent recovery processing under condition of the detection of turn-off of the ignition switch and an elapse of the waiting time.

公开(公告)号：EP3133257B1

公开(公告)日：2018-09-19

申请号：EP15780707.4

申请日：2015-04-16

Applicant: Isuzu Motors Limited

Inventor： MINEZAWA, Masanobu ,  SAKUMOTO, Kouji ,  HARA, Shinji

IPC: F01N3/08 ,  B01D53/94 ,  F01N3/20 ,  F01N11/00

CPC classification number: B01D53/9495 ,  B01D53/94 ,  B01D53/9418 ,  B01D53/9431 ,  F01N3/08 ,  F01N3/20 ,  F01N3/208 ,  F01N11/002 ,  F01N11/007 ,  F01N2550/02 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1602 ,  Y02C20/10 ,  Y02T10/24 ,  Y02T10/47

Abstract: An exhaust gas purification system which effectively prevents NH3 slip or misdiagnosis when an exhaust gas temperature is rapidly increased is provided. The exhaust gas purification system includes a SCR 41, an NOx sensor 22 which is provided on a downstream side of the SCR 41, and an NOx purifying controller 51 which controls an amount of urea water being ejected to the SCR 41 and performs an abnormality diagnosis based on a detection value of the NOx sensor 22, wherein the exhaust gas purification system includes an exhaust gas temperature sensor 21 which acquires temperature of the exhaust gas flowing into the SCR 41, a temperature increasing rate calculating unit 54 which calculates a temperature increasing rate at which the exhaust gas temperature acquired by the exhaust gas temperature sensor 21 reaches a second temperature from a predetermined first temperature, and a prohibiting unit 55 which prohibits abnormality diagnosis by the NOx purifying controller 51 in a case in which the temperature increasing rate calculated by the temperature increasing rate calculating unit 54 is higher than a predetermined determination threshold value.

公开(公告)号：EP3368754A1

公开(公告)日：2018-09-05

申请号：EP16860388.4

申请日：2016-10-27

Applicant: Scania CV AB

Inventor： LUNDSTRÖM, Mikael

IPC: F01N3/20 ,  F01N11/00 ,  F02D43/00 ,  B01D53/94

CPC classification number: F02D41/0235 ,  B01D53/9418 ,  B01D53/9495 ,  B01D2251/2067 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N11/00 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/0416 ,  F01N2900/1818 ,  F02D41/1463 ,  F02D41/22 ,  F02D41/222 ,  F02D2250/26 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

Abstract: The present invention relates to a method for restricting work produced in a combustion chamber, wherein a substance resulting from combustion is reduced by supplying additive comprising a reagent to the exhaust gas stream. The method comprising: determining if a quality of said additive, estimated by means of a first sensor, being subjected to said additive, is below a first quality; determining if signals from a second sensor, being subjected to the exhaust gas stream, indicate insufficient reduction of said at least one substance; determining if a correction of the supply of additive has reached an upper limit; and restricting work produced by combustion only when: said estimated quality of said additive is below said first quality, said correction has reached said upper limit, and said measurement in the exhaust gas stream indicates insufficient reduction.

公开(公告)号：EP3056701B1

公开(公告)日：2018-09-05

申请号：EP14852286.5

申请日：2014-10-08

Applicant: Isuzu Motors Limited

Inventor： UCHIYAMA Tadashi ,  FUJIE Hidekazu ,  MURASAWA Naoto ,  HANAWA Satoshi

IPC: F01N3/08 ,  B01D53/94 ,  F01N3/00

CPC classification number: F01N3/208 ,  B01D53/9431 ,  B01D53/9495 ,  B01D2251/2067 ,  F01N3/021 ,  F01N3/103 ,  F01N3/106 ,  F01N13/008 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2560/021 ,  F01N2560/12 ,  F01N2610/02 ,  F01N2900/0601 ,  F01N2900/1602 ,  F01N2900/1622 ,  F02D9/02 ,  F02D41/0097 ,  F02D2009/0294 ,  Y02T10/24

Abstract: The present invention relates to an exhaust purification system and detects an internal NH 3 adsorption amount with high precision. An exhaust purification system includes an SCR catalyst (32) disposed at an exhaust system of an engine (10) for using ammonia that is generated from urea water as a reducing agent to reduce and purify NOx contained in exhaust gas, a urea water injection device (31) that injects urea water to the SCR catalyst (32), an inlet-side electrode (37) that detects capacitance within the SCR catalyst (32) at least from the vicinity of the inlet of the SCR catalyst to the vicinity of an intermediate section in an exhaust gas flowing direction, an outlet-side electrode (38) that detects the capacitance within the SCR catalyst (32) at least from the vicinity of the intermediate section to the outlet of the SCR catalyst in the exhaust gas flowing direction, and an NH 3 adsorption amount calculation unit (52) that calculates the ammonia adsorption amount within the SCR catalyst (32) on the basis of the capacitance entered from the inlet-side electrode (37) and the capacitance entered from the outlet-side electrode (38).

公开(公告)号：EP2141332B1

公开(公告)日：2018-09-05

申请号：EP08740965.2

申请日：2008-04-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： TOSHIOKA, Shunsuke ,  ODA, Tomihisa ,  ITOH, Takekazu ,  TANAI, Yutaka ,  WATANABE, Satoshi ,  NAKAMURA, Yoshitaka

IPC: F01N3/18 ,  B01D53/94 ,  F01N3/04 ,  F01N3/08 ,  F01N3/28 ,  F01N3/20

CPC classification number: F01N9/00 ,  B01D53/9431 ,  B01D53/9495 ,  B01D2251/2067 ,  B01D2257/404 ,  B01D2258/01 ,  F01N3/2066 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0097 ,  F01N2610/02 ,  F01N2610/1406 ,  F01N2610/142 ,  F01N2900/1806 ,  F01N2900/1814 ,  F02B37/00 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47 ,  Y10T137/7287

Abstract: In an internal combustion engine, an NO x selective reduction catalyst (15) is arranged in the engine exhaust passage and a urea aqueous solution stored in a urea aqueous solution tank (20) is fed to the NO x selective reduction catalyst (15) where the NO x is selectively reduced. Opening and closing of the urea aqueous solution refill port (40) of the urea aqueous solution tank (20) are detected and it is judged if the urea aqueous solution is refilled in the urea aqueous solution tank (20). When it is judged that the NO x purification rate has fallen to an allowable level or less at the time of engine operation right after the urea aqueous solution is refilled in the urea aqueous solution tank (20), it is judged that the refilled urea aqueous solution is abnormal.

公开(公告)号：EP3366366A1

公开(公告)日：2018-08-29

申请号：EP18158562.1

申请日：2018-02-26

Applicant: Deutsches Zentrum für Luft- und Raumfahrt e.V.

Inventor： Hosseiny, Seyed Schwan ,  Lettenmeier, Philipp ,  Gago Rodriguez, Aldo Saul ,  Friedrich, Kaspar Andreas

IPC: B01D53/90 ,  B01D53/94 ,  F01N3/20 ,  F01N13/00

CPC classification number: B01D53/90 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/102 ,  B01D2251/202 ,  B01D2258/012 ,  F01N3/206 ,  F01N13/009 ,  F01N13/0097 ,  F01N2240/26 ,  F01N2240/34 ,  F01N2570/14 ,  F01N2610/04 ,  F01N2610/06

Abstract: Um ein System zur Abgasbehandlung von Verbrennungsvorrichtungen, insbesondere von Verbrennungsmotoren, umfassend eine erste Behandlungskammer mit einem ersten Abgaseinlass, einem ersten Abgasauslass, einem Reduktionsmitteleinlass und einem Reduktionskatalysator, welcher erste Abgaseinlass direkt oder indirekt mit der Verbrennungsvorrichtung fluidwirksam verbindbar ist, wobei das System einen Abgasbehandlungsmittelspeicher zum Speichern eines Abgasbehandlungsmittels und eine Reduktionsmittelerzeugungseinrichtung zum Erzeugen eines Reduktionsmittels aus dem Abgasbehandlungsmittel umfasst, zu verbessern, wird vorgeschlagen, dass die Reduktionsmittelerzeugungseinrichtung in Form einer Elektrolyseeinrichtung zum Erzeugen des Reduktionsmittels aus dem Abgasbehandlungsmittel durch Elektrolyse ausgebildet ist.
Ferner wird ein verbessertes Verfahren zur Abgasbehandlung von Verbrennungsvorrichtungen vorgeschlagen.

公开(公告)号：EP3093482B1

公开(公告)日：2018-08-01

申请号：EP14854298.8

申请日：2014-10-02

Applicant: Isuzu Motors, Ltd.

Inventor： NAGAOKA, Daiji ,  SAKAMOTO, Takayuki

IPC: F02M26/01 ,  B01D53/94 ,  F01N3/02 ,  F01N3/023 ,  F02D21/08

CPC classification number: F02D41/0055 ,  B01D53/944 ,  B01D53/9477 ,  B01D53/9495 ,  F01N3/02 ,  F01N3/021 ,  F01N3/023 ,  F01N3/0231 ,  F01N3/103 ,  F01N3/106 ,  F01N9/002 ,  F01N13/0097 ,  F01N2430/00 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2570/14 ,  F01N2900/1602 ,  F01N2900/1606 ,  F02D41/005 ,  F02D41/029 ,  F02D41/08 ,  F02D2200/0802 ,  F02D2200/0812 ,  F02D2250/36 ,  F02M26/05 ,  F02M26/15 ,  F02M26/23 ,  Y02A50/2322 ,  Y02T10/22 ,  Y02T10/47

Abstract: An exhaust gas after-treatment device 31 including an oxidation catalyst 31a and a DPF 31b in order from an upstream side is provided in an exhaust passage 15 of an internal combustion engine 10. A target value Et of an EGR rate E in EGR control is set to be a second EGR rate E2 higher than a first EGR rate E1 at the time of a normal operation of the internal combustion engine 10 and the EGR control is performed, in a case where a catalyst index temperature T that indexes a temperature of the oxidation catalyst 31a falls within a set temperature region Rab between a lower limit set temperature Ta and an upper limit set temperature Tb which are preliminarily set, and where an estimated PM deposition amount V of the DPF 31b is less than a preliminarily set regeneration start threshold value Vc, after an operation state of the internal combustion engine 10 transitions from a traveling operation state to an idling operation state. Thereby, in the idling operation state after travel of a vehicle, generation of NO 2 by the oxidation catalyst 31a included in the exhaust gas after-treatment device 31 of the exhaust passage 15 is decreased, and emission of NO 2 to the atmosphere is suppressed.