ИНЖЕКТОР ДЛЯ ВОДНОГО РАСТВОРА МОЧЕВИНЫ

Изобретение относится к инжектору для водного раствора мочевины, с помощью которого водный раствор мочевины может быть введен в системы выпуска отработавшего газа (ОГ) автомобиля. Инжектор (1) для водного раствора мочевины, содержащий, по меньшей мере, основной корпус (2) с фитингом (3) для водного раствора мочевины, клапан (4) с приводом (5) клапана и отдельную питающую трубку (6) для водного раствора мочевины, причем питающая трубка (6), по меньшей мере частично, простирается через основной корпус (2). Технический результат, достигаемый при осуществлении изобретения, заключается в обеспечении надежной и долговечной защиты инжектора от повреждения в результате образования льда. 8 з.п. ф-лы, 8 ил.

УСТРОЙСТВО ДЛЯ ПОДАЧИ ЖИДКОГО ВОССТАНОВИТЕЛЯ

Изобретение относится к автомобильной промышленности. Устройство для подачи жидкого восстановителя в устройство для очистки отработавшего газа (ОГ) имеет бак с внутренним пространством, в котором может храниться восстановитель, также впуск во внутреннее пространство. Нагнетательное устройство, которое расположено в отдельной камере в днище бака. Трубопровод от нагнетательного устройства к устройству для очистки ОГ. Трубопровод проходит через днище бака в области отдельной камеры, а также очищающий слой, который покрывает впуск. Между впуском и очищающим слоем выполнено промежуточное пространство, в котором предусмотрен по меньшей мере один губчатый элемент, который может поглощать восстановитель и из которого нагнетательное устройство может извлекать восстановитель через впуск. Изобретение позволяет сделать процесс очистки восстановителя, поступающего из бака, адаптированным к подаче в меняющихся условиях эксплуатации, а также создать условия, при которых восстановитель из бака будет использован ...

УСТРОЙСТВО ДЛЯ ОБЕСПЕЧЕНИЯ ЖИДКОГО ВОССТАНОВИТЕЛЯ С СИТОМ ДЛЯ СЕПАРАЦИИ ЧАСТИЦ

Изобретение относится к устройствам для очистки отработавшего газа. Устройство (1) для подачи жидкого восстановителя (15) имеет бак (2) с внутренним пространством (3) и, по меньшей мере, частично расположенный во внутреннем пространстве (3) бака (2) резервуар (4). Резервуар (4) снаружи, по меньшей мере, частично окружен выполненным с возможностью прохода потока ситом (5) для сепарации частиц. В резервуаре (4) находится подающее устройство (8), которое выполнено для подачи восстановителя (15) из бака (2) через сито (5) для сепарации частиц, а затем к месту (9) впрыска восстановителя (15). При использовании изобретения появляется возможность создания сита, засорение которого может быть предотвращено в течение длительного периода времени за счет эффекта самоочищения, благодаря металлическому исполнению само сито может использоваться как нагреватель. 9 з.п. ф-лы, 13 ил.

СПОСОБ, ОТНОСЯЩИЙСЯ К УДАЛЕНИЮ ВОЗДУХА ИЗ СИСТЕМЫ ПОДАЧИ ЖИДКОСТИ, И СИСТЕМА ПОДАЧИ ЖИДКОСТИ

Изобретение может быть использовано в системах выборочного каталитического восстановления двигателей внутреннего сгорания. Способ относится к системе подачи жидкости, когда жидкость подают к нагнетающему устройству (230), через которое жидкость подается из контейнера (205) к, по меньшей мере, одной точке (250) потребления. Способ заключается в том, что определяют присутствие воздуха, подаваемого на вход нагнетающего устройства (230). Когда определено такое присутствие, уменьшают рабочую мощность нагнетающего устройства (230) по сравнению с обычной работой. Технический результат заключается в уменьшении количества нежелательных выхлопных газов в системе выборочного каталитического восстановления двигателей внутреннего сгорания в случае попадания в систему воздуха. Раскрыта система подачи жидкости, транспортное средство с системой подачи жидкости и машиночитаемый носитель. 4 н. и 19 з.п. ф-лы, 5 ил.

СИСТЕМА И СПОСОБ ПЕРЕДАЧИ ТЕКУЧЕЙ СРЕДЫ, И ВЫХЛОПНАЯ СИСТЕМА, СОДЕРЖАЩАЯ СИСТЕМУ ПЕРЕДАЧИ ТЕКУЧЕЙ СРЕДЫ

Изобретение может быть использовано для подачи мочевины в высокоточных дозированных количествах из бака в распылительную насадку, находящуюся в выхлопной системе двигателя внутреннего сгорания. Система содержит бак, принимающее устройство (распылительная насадка), проточное устройство, снабженное измерительным устройством, управляемый отсечной клапан, находящийся перед принимающим устройством и за проточным устройством, и управляющее устройство для управления отсечным клапаном, которое управляет отсечным клапаном в режиме широтно-импульсной модуляции. Такое выполнение повысит точность дозирования. 3 н. и 31 з.п. ф-лы, 13 ил.

СПОСОБ И УСТРОЙСТВО ДЛЯ ОБРАБОТКИ ОТРАБОТАВШИХ ГАЗОВ, ОБРАЗУЮЩИХСЯ ПРИ РАБОТЕ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Настоящее изобретение относится к способу и устройству для обработки отработавших газов (ОГ), образующихся при работе двигателя внутреннего сгорания (ДВС). Устройство (15) для обработки отработавших газов (ОГ), образующихся при работе двигателя внутреннего сгорания, имеющее испаритель (16) раствора восстановителя с испарительным блоком (12), предназначенным для испарения водного раствора (45), содержащего один предшественник восстановителя, и для приготовления таким путем газообразной смеси, содержащей одно из следующих веществ: а) один предшественник восстановителя и б) восстановитель, соединенный с испарителем (16) раствора восстановителя катализатор (17) гидролиза, прежде всего гидролиза мочевины до аммиака, и катализатор (18) селективного каталитического восстановления (СКВ-катализатор) оксидов азота, расположенный в выпускном трубопроводе (14), и отличающееся тем, что испаритель (16) раствора восстановителя и катализатор гидролиза (17) расположены вне выпускного трубопровода (14) с ...

СИСТЕМА ПОДАЧИ ДОБАВКИ К ВЫХЛОПНЫМ ГАЗАМ, ВКЛЮЧАЮЩАЯ УСТРОЙСТВО РАСПРЕДЕЛЕНИЯ ДОБАВКИ К ВЫХЛОПНЫМ ГАЗАМ И УСТРОЙСТВО ДОЗИРОВАНИЯ ДОБАВКИ К ВЫХЛОПНЫМ ГАЗАМ

Настоящее изобретение относится к системе подачи для турбины (6) турбокомпрессора выхлопной системы двигателя (2) внутреннего сгорания, причем система подачи включает распределительное устройство (24) и дозирующее устройство (26). Распределительное устройство (24) включает приемную поверхность (40, 46, 54) и по меньшей мере одну распределительную поверхность(-ти) (42, 48, 56). Приемная поверхность (40, 46, 54) предназначена для приема добавки к выхлопным газам, подаваемой в распределительное устройство (24). Распределительная поверхность (42, 48, 56) находится в сообщении по текучей среде с приемной поверхностью (40, 46, 54) и выполнена для распределения добавки к выхлопным газам в потоке выхлопных газов, проходящем через турбину турбокомпрессора, в результате вращательного движения распределительного устройства (24). Распределительное устройство (24) прочно присоединено к валу (20) или ступице турбины (6) турбокомпрессора. Дозирующее устройство (26) включает подводящий канал (28), дозировочный ...

СОЕДИНИТЕЛЬ ДЛЯ ТРУБОПРОВОДА ДЛЯ ТЕКУЧЕЙ СРЕДЫ

Изобретение относится к соединителю для трубопровода для текучей среды. Соединитель содержит корпус, имеющий соединительный патрубок для соединения с трубой и соединительный геометрический элемент для соединения с сопряженным элементом. Корпус в выходной части имеет выходное отверстие, через которое наружу из корпуса выведено нагревательное устройство, проходящее через заглушку. Заглушка расположена в выходном отверстии. Выходная часть снабжена литьевой массой, закрывающей выходное отверстие. Между литьевой массой и заглушкой установлен разделительный элемент. Изобретение упрощает процесс изготовления соединителя. 8 з.п. ф-лы, 1 ил.

СПОСОБ, ОТНОСЯЩИЙСЯ К SCR-СИСТЕМЕ, И SCR-СИСТЕМА (SCR-ИЗБИРАТЕЛЬНОЕ КАТАЛИТИЧЕСКОЕ ВОССТАНОВЛЕНИЕ)

Изобретение относится к SCR-системе для очистки выхлопных газов. Способ относится к SCR-системе для очистки выхлопных газов, посредством которой восстанавливающий агент подается в подающее устройство (230), которое подает его в дозирующее устройство (250) для дозированной подачи восстанавливающего агента посредством клапанного механизма (350, 360) в точке потребления в SCR-системе. Способ содержит этапы непрерывного определения (s410) совокупного числа (N) доз, впрыснутых упомянутым дозирующим устройством (250), непрерывного сравнения (s420, s430) упомянутого совокупного числа (N) впрыснутых доз с предварительно определенным числовым значением (TH) и предоставления указания (s440), когда упомянутое совокупное число (N) впрыснутых доз превышает упомянутое предварительно определенное числовое значение (TH). Изобретение также относится к компьютерному программному продукту, содержащему программный код (P) для компьютера (200; 210; 500) для реализации способа согласно изобретению. Изобретение ...

СПОСОБ УМЕНЬШЕНИЯ ВЫБРОСОВ NOxСКВ И УСТРОЙСТВО ДЛЯ ЭТОГО

... 1. Способ уменьшения содержания окислов азота (NOx) в выхлопных газах дизельных двигателей или турбин для стационарных или передвижных применений/транспортных средств в системе СКВ обеспечением источника для хранения жидкого восстанавливающего агента и подачей этого восстанавливающего агента к выхлопным газам, причем указанный способ включает перенос жидкого восстанавливающего агента из внешнего резервуара для хранения в один или более мембранных резервуаров для хранения, каждый из которых снабжен внутренним сильфоном, состоящим из непроницаемой гибкой мембраны, и гидравлической или пневматической вытесняющей текучей средой, расположенной вне внутреннего сильфона, заполнение гибкого внутреннего сильфона жидким восстанавливающим агентом и одновременно приложение давления к вытесняющей текучей среде в мембранном резервуаре для хранения до тех пор, пока не достигнуто давление подачи, повышение давления вытесняющей текучей среды в мембранном резервуаре для хранения переносом дополнительного ...

СИСТЕМА ОЧИСТКИ ОТРАБОТАВШИХ ГАЗОВ ДВИГАТЕЛЯ С РЕАГЕНТОМ, ВПРЫСКИВАЕМЫМ В БАЙПАСНЫЙ КАНАЛ ТУРБОНАГНЕТАТЕЛЯ

СОЕДИНИТЕЛИ ТРУБОПРОВОДОВ ДЛЯ СИСТЕМ ПОДАЧИ ВОССТАНОВИТЕЛЯ

... 1. Система, содержащая:двигатель внутреннего сгорания, выполненный с возможностью вырабатывать поток выхлопных газов, проходящий через систему последующей обработки выхлопных газов, соединенную с указанным двигателем;причем указанная система последующей обработки выхлопных газов соединена с системой подачи восстановителя, которая содержит дозирующий блок восстановителя с впускным отверстием и по меньшей мере одну линию подачи восстановителя, соединенную с указанным дозирующим блоком восстановителя посредством соединителя трубопроводов;причем указанный дозирующий блок восстановителя содержит камеру, расположенную ниже по потоку от впускного отверстия; ипричем указанный соединитель трубопроводов содержит корпус, выполненный из первого материала, причем указанный корпус проходит между указанной линией подачи восстановителя и указанным впускным отверстием указанного дозирующего блока восстановителя и соединяет их, причем указанный соединитель трубопроводов дополнительно содержит вставку, выполненную ...

ТРУБОПРОВОД ДЛЯ ТЕКУЧЕЙ СРЕДЫ

... 1. Трубопровод для текучей среды, содержащий трубу (2), соединитель (3), имеющий соединительный патрубок (4) и установленный на одном конце трубы (2), и нагревательное устройство (8), расположенное в трубе (2), отличающийся тем, что нагревательное устройство выполнено в виде нагревательного стержня (12), проходящего из трубы (2) в соединительный патрубок (4) соединителя (3) и выходящего из соединителя (3) через отверстие (11).2. Трубопровод для текучей среды по п.1, отличающийся тем, что нагревательный стержень (12) выполнен из полимерного материала (13) в который заделан по меньшей мере один нагревательный проводник (14, 15).3. Трубопровод для текучей среды по п.1 или 2, отличающийся тем, что нагревательный стержень (12) выполнен гибким.4. Трубопровод для текучей среды по п.1, отличающийся тем, что отверстие (11) уплотнено при помощи кольцевого уплотнения (20), которое прилегает к нагревательному стержню (12).5. Трубопровод для текучей среды по п.4, отличающийся тем, что кольцевое уплотнение ...

СОЕДИНИТЕЛЬ ДЛЯ НАГРЕВАЕМОГО ТРУБОПРОВОДА ДЛЯ ТЕКУЧЕЙ СРЕДЫ И НАГРЕВАЕМЫЙ ТРУБОПРОВОД ДЛЯ ТЕКУЧЕЙ СРЕДЫ

... 1. Соединитель для нагреваемого трубопровода (1) для текучей среды, содержащий корпус (17), который имеет соединительный патрубок (4) для соединения с трубой (3), соединительный геометрический элемент (7) для соединительного элемента и выходной канал (9) для нагревательного средства, при этом через соединительный патрубок (4) к соединительному геометрическому элементу (7) проходит сквозной канал (6) а выходной канал (9) для нагревательного средства образует со сквозным каналом (6) угол α≠0, отличающийся тем, что в сквозном канале (6) установлен рамповый элемент (15), имеющий направляющую поверхность (16), ведущую из сквозного канала (6) к выходному каналу (9) для нагревательного средства.2. Соединитель по п.1, отличающийся тем, что направляющая поверхность (16) не имеет перегибов.3. Соединитель по п.1 или 2, отличающийся тем, что рамповый элемент (15) заполняет сквозной канал (6) в плоскости, которая проходит через сквозной канал (6) и выходной канал (9) для нагревательного средства, а ...

Verbinder für eine Fluidleitung und Fluidleitung

Metering device for introducing aqueous urea solution in exhaust gas in selective catalytic reduction converter of exhaust gas after-treatment system of motor vehicle, has reduction duct element thermally coupled with conduit element

The device has a retaining container for retaining a reducing agent and connected with a metering element i.e. nozzle, through a reduction duct element (10) for supplying the reducing agent to the metering element. A cooling conduit element (20) supplies coolant to an aggregate of the vehicle, and thermally coupled with the reduction duct element for heating the reducing agent in the reduction duct element. Another reduction duct element (12) supplies the reducing agent into the retaining container through the metering element and is thermally coupled with the cooling conduit element.

Reduktionsmittelschnittstelle

Verbrennungsmotorsystem (2), umfassend – einen Hubkolben-Verbrennungsmotor (3), – ein SCR-Modul (1) zur Abgasbehandlung, wobei das SCR-Modul (1) eine hydraulische Schnittstelle (18) zur Versorgung des SCR-Moduls (1) mit Reduktionsmittel, ein Einspritzelement (11), eine Abgasschnittstelle (22), z. B. ein Abgasrohrstutzen (23), und einen Abgasstrang (7) mit einem SCR-Katalysator (10) umfasst, – wenigstens eine Reduktionsmittelhauptleitung (28) zum Leiten von Reduktionsmittel zu dem SCR-Modul (1), – eine Reduktionsmittelschnittstelle (26), wobei die wenigstens eine Reduktionsmittelhauptleitung (28) mit der Reduktionsmittelschnittstelle (26) verbunden ist, dadurch gekennzeichnet, dass die Reduktionsmittelschnittstelle (26) wenigstens eine Schraub- und/oder wenigstens eine Steckkupplung zur hydraulischen Verbindung mit der wenigstens einen Reduktionsmittelhauptleitung (28) umfasst und/oder die Reduktionsmittelschnittstelle (26) wenigstens eine Schraub- und/oder wenigstens eine Steckkupplung ...

Ventilvorrichtung und Fahrzeug

Die Erfindung betrifft eine Ventilvorrichtung (100). Die Ventilvorrichtung (100) weist eine Schieberventileinrichtung (110) mit einem bewegbaren Schieber (111) auf. Zudem weist die Ventilvorrichtung (100) eine Sitzventileinrichtung (120) auf. Die Sitzventileinrichtung (120) weist einen Ventilsitz (121), einen Schließkörper (123) und ein Rückstellelement (125) auf. Ferner ist die Schieberventileinrichtung (110) derart an der Sitzventileinrichtung (120) angeordnet, dass der Schließkörper (123) durch Bewegen des Schiebers (111) gegen die Rückstellkraft des Rückstellelements (125) von dem Ventilsitz (121) gehoben werden kann, um die Sitzventileinrichtung (120) zu öffnen.

Wächter für Ammoniak in einem Dosiersystem

Ein Ammoniak-Dosiersystem weist einen Behälter, dessen Inneres Ammoniak-Luminophore beinhaltet, und eine Zuführvorrichtung zum Zuführen von Ammoniak aus dem Behälterinneren in ein Abgasnachbehandlungssystem auf, um es mit Motorabgas, welches zu einem SCR-Katalysator zum katalytischen Umwandeln von NOx in dem Motorabgas strömt, mitzureißen.

Leitungsverbinder sowie Leitungssatz für fluidische Medien

Druckspeicher

Ein Druckspeicher (2a–2f), insbesondere für ein Abgasnachbehandlungssystem, umfasst: ein Gehäuse (4) mit einem darin ausgebildeten Hohlraum (20); einen Kolben (6), der beweglich so in dem Hohlraum (20) angeordnet ist, dass in dem Hohlraum (20) ein Druckspeichervolumen (21) ausgebildet ist, dessen Größe durch Bewegen des Kolbens (6) in einer Längsrichtung variierbar ist; ein Dichtungselement (12), das zwischen dem äußeren Umfang des Kolbens (6) und dem inneren Umfang des Hohlraums (20) derart angeordnet ist, dass der äußeren Umfang des Kolbens (6) von dem inneren Umfang des Hohlraums (20) beabstandet ist; sowie ein Führungselement (18), das sich in der Längsrichtung durch das Gehäuse (4), den Hohlraum (20) und den Kolben (6) erstreckt, und das ausgebildet ist, die Bewegung des Kolbens (6) in der Längsrichtung zu führen.

Vorrichtung, System und Verfahren zum Reduzieren von NOx-Emissionen bei eine SCR-Katalysator unter Verwendung von Ammoniakspeicherung und Schlupfsteuerung

Vorrichtung zum Reduzieren von NOx-Emissionen in einem Motorabgasstrom, umfassend: ein NOx-Reduktions-Soll-Modul, das konfiguriert ist, eine NOx-Reduktionsanforderung zu bestimmen, wobei die NOx-Reduktionsanforderung eine auf einem Katalysator mit selektiver katalytischer Reduktion (SCR) mit einem Katalysatorbett zu reduzierende Menge an NOx in dem Abgasstrom umfasst; ein Ammoniakspeichermodul, das konfiguriert ist, einen Ammoniakspeichermodifizierer zu bestimmen; ein Ammoniak-Soll-Modul, das konfiguriert ist, eine Ammoniakzusatzanforderung zu bestimmen, wobei die Ammoniakzusatzanforderung eine dem Abgasstrom zugesetzte Ammoniakmenge umfasst, um die NOx-Reduktionsanforderung zu erreichen, wobei das Ammoniak-Soll-Modul in Daten empfangender Kommunikation mit dem Ammoniakspeichermodul kommunizieren kann, um den Ammoniakspeichermodifizierer zu empfangen, wobei das Ammoniak-Soll-Modul konfiguriert ist, den Ammoniakspeichermodifizierer zu der Ammoniakzusatzanforderung hinzuzufügen; und ein Reduktionsmittel-Soll-Modul ...

Reduktionsmittelzufuhrsysteme und Verfahren

Ein Dosiermodul schließt einen Einlasskrümmer, einen Auslasskrümmer, eine erste Abzweigung und eine zweite Abzweigung ein. Der Einlasskrümmer ist konfiguriert, um wahlweise Reduktionsmittel von einer Pumpe aufzunehmen. Der Auslasskrümmer ist konfiguriert, um wahlweise das Reduktionsmittel einer Düse bereitzustellen. Die erste Abzweigung ist mit dem Einlasskrümmer und dem Auslasskrümmer gekoppelt. Die erste Abzweigung ist konfiguriert, um wahlweise dem Auslasskrümmer das Reduktionsmittel aus dem Einlasskrümmer bereitzustellen. Die erste Abzweigung schließt einen ersten Durchflussbegrenzer ein, der konfiguriert ist, um das Reduktionsmittel zu begrenzen, wenn das Reduktionsmittel dem Auslasskrümmer bereitgestellt wird. Die zweite Abzweigung ist mit dem Einlasskrümmer und dem Auslasskrümmer gekoppelt. Die zweite Abzweigung ist konfiguriert, um wahlweise dem Auslasskrümmer das Reduktionsmittel aus dem Einlasskrümmer separat von der ersten Abzweigung bereitzustellen. Die zweite Abzweigung schließt ...

Fördervorrichtung zur Zuführung eines Feststoffes zu einem Reaktor eines Abgasnachbehandlungssystems

Fördervorrichtung zur Zuführung eines Feststoffes (7) zu einem Reaktor (9) eines Abgasnachbehandlungssystems mit einer Dosiereinrichtung (5) für den Feststoff (7) und einem von einem Förderfluid durchströmten Förderkanal (2), dadurch gekennzeichnet, dass vom Förderkanal (2) vor dem Ende (8) des Förderkanals (2) ein Fluidrückführkanal (10) abzweigt, über den das Förderfluid zumindest teilweise in Strömungsrichtung vor die Dosiereinrichtung (5) zurückführbar ist.

System for dosing a urea-water solution into the exhaust gas tract of a vehicle having a diesel engine to reduce nitrogen oxide emissions comprises a supply tank, a dosing unit and a pipe system

System comprises a supply tank (110) for storage a urea-water solution, a dosing unit (124) for dosing the solution into an exhaust gas tract and a pipe system (112) for conveying the solution from the tank to the dosing unit. The tank, dosing unit and pipe system each have a blocking element (122). Preferred Features: The blocking element has a swelling element having an elastomer which swells in the presence of hydrocarbons. The elastomer is ethylene-propylene terpolymer. The swelling source is s sponge element.

Conduit system e.g. double wall hose assembly, for use in e.g. diesel engine, has inner conduit, where current is applied at two pairs of electrical conduits, such that inner conduit is heated by warming electrical conduits

The conduit system has an inner conduit (2), through which the fluid flows. Two pairs of electrical conduits (6, 7) are attached to the inner conduit in their longitudinal direction, and are connected with one another to form closed conduits, respectively. Current is applied at the pair of electrical conduits (6) and/or at the pair of the electrical conduits (7), in such a manner that the inner conduit is heated by warming the electrical conduits.

VERFAHREN UND VORRICHTUNG ZUR DOSIERUNG EINES REDUKTIONSMITTELS ZUR ENTFERNUNG VON STICKOXIDEN AUS ABGASEN

ABGASBEHANDLUNGSSYSTEM, BEI DEM EIN REAKTIONSMITTEL IN EINEN TURBOLADER-BYPASS-KANAL EINGESPRITZT WIRD

Es ist ein Abgasbehandlungssystem für ein Fahrzeug bereitgestellt. Das Abgassystem umfasst: einen Abgaskanal, eine Turboladerturbine, die am Abgaskanal bereitgestellt ist, einen Turbolader-Bypass-Kanal, der ein erstes und ein zweites Ende umfasst, wobei das erste Ende prozessaufwärts der Turboladerturbine mit dem Abgaskanal in Fluidverbindung steht und das zweite Ende prozessabwärts des Turboladers mit dem Abgaskanal in Fluidverbindung steht, eine Abgasnachbehandlungsvorrichtung, die prozessabwärts des Turbolader-Bypass-Kanals bereitgestellt ist, und einen Einspritzer, der am Turbolader-Bypass-Kanal bereitgestellt und dafür gestaltet ist, ein Reaktionsmittel in den Turbolader-Bypass-Kanal einzuführen.

Dieseloxidationskatalysator

Die Erfindung betrifft einen Dieseloxidationskatalysator (1), welcher als Hohlkörper ausgebildet ist, und wobei der Dieseloxidationskatalysator (1) von seinem Außenumfang hin zu seinem Innenumfang von einem Abgasmassenstrom durchströmbar ist, und wobei am Innenumfang des Dieseloxidationskatalysators (1) Reduktionsmittel dem Abgasmassenstrom zuführbar ist.Erfindungsgemäß weist der Dieseloxidationskatalysator (1) in seiner Längserstreckung ein erstes Ende (4) mit einem ersten Außenquerschnitt (Q1) und mit einem ersten Innenquerschnitt (Q2) und ein zweites Ende (5) mit einem zweiten Außenquerschnitt (Q3) und mit einem zweiten Innenquerschnitt (Q4) auf.Der erste Außenquerschnitt (Q1) kann mit dem zweiten Außenquerschnitt (Q3) übereinstimmen.Der erste Innenquerschnitt (Q2) stimmt nicht mit dem zweiten Innenquerschnitt (Q4) überein. Am Innenumfang des Dieseloxidationskatalysators (1) ist mindestens ein Strömungsleitelement (6) angeordnet.

Beheizbare Medienleitung und Verfahren zu deren Herstellung

Bei einer Beheizbare Medienleitung (1) mit zumindest einem Leitungsverbinder (11, 17, 211) und Heizelement (2), wobei das Heizelement (2) wenige Litzen (20, 21), insbesondere zwei Litzen, aufweist, erstrecken sich ein und dieselben Litzen (20, 21) durchgängig sowohl entlang der Medienleitung (10) als auch entlang dem zumindest einen Leitungsverbinder (11, 17, 211). Bei einem Verfahren zum Herstellen einer solchen beheizbaren Medienleitung (1) wird eine rohrförmige Medienleitung kontinuierlich mit dem Heizelement bewickelt und das Heizelement auf der Medienleitung durch zumindest ein Befestigungsmittel (16) befestigt oder fixiert vorkonfektioniert, wird die Medienleitung anwendungsspezifisch in einer ersten Länge abgelängt, die der gewünschten Medienleitungslänge (lR) zuzüglich der zum Umwickeln des zumindest einen Leitungsverbinders (11, 17, 211) und des Übergangsbereichs (18, 19) erforderlichen Heizelementlänge (lH) entspricht, wird das Befestigungsmittel (16) in dem Bereich (12, 13, 112 ...

Flüssigkeitsentnahmemodul, Flüssigkeitstank

Die Erfindung betrifft ein Flüssigkeitsentnahmemodul (1) zur Entnahme von Flüssigkeit aus einem Flüssigkeitstank, insbesondere eines Abgasnachbehandlungssystems eines Kraftfahrzeugs, mit einem zumindest im Wesentlichen aus Kunststoff gefertigten, wenigstens eine Entnahmeöffnung (5) und wenigstens einen Steckanschluss (14) zum elektrischen Kontaktieren eines elektrischen Verbrauchers (10, 7) des Flüssigkeitsentnahmemoduls (1) aufweisenden Einsatzteil (2). Es ist vorgesehen, dass ein Gehäuse (16) des Steckanschlusses (14) separat ausgebildet ist und wenigstens einen umspritzten Hinterschnitt (22, 32) zur Befestigung an dem Einsatzteil (2) aufweist.

Aerosol system, to give a dosed delivery of an air/liquid mixture into a motor exhaust, has a heater at the air feed and a mixing zone with separate air and liquid supply lines

The assembly (1) to deliver a dosed aerosol mixture of air and a liquid urea solution into the exhaust, of a vehicle internal combustion motor, has a mixing zone (11) with separate air (3) and liquid (2) feeds. An electric heater (12) is within or outside the air feed.

Behälter mit einer Entnahmeleitung für eine Betriebsflüssigkeit eines Kraftfahrzeugs

Die Erfindung betrifft einen Behälter (1) für eine Betriebsflüssigkeit (2) für ein Kraftfahrzeug (3), aufweisend eine Behälterwand (4), die einen Innenraum (5) des Behälters (1) begrenzt. Der Behälter (1) hat einen ersten Wandabschnitt (6) und einen zweiten Wandabschnitt (7) und zumindest eine Entnahmeleitung (8) zur Entnahme von Betriebsflüssigkeit (2) aus dem Behälter (1) mit einer Länge (9). Die Entnahmeleitung (8) erstreckt sich von dem ersten Wandabschnitt (6) zu dem zweiten Wandabschnitt (7) und sie ist in ihrer Länge (9) an einen Abstand (10) zwischen dem ersten Wandabschnitt (6) und dem zweiten Wandabschnitt (7) anpassbar.

Reducing agent tank for storing freezing reducing agent in exhaust system of internal combustion engine, has conveying equipment whose conveying channel is switched for extracting reducing agent out from container by transfer valve

The tank (10) has heatable containers (16, 18) for storing reducing agent. A conveying equipment (23) and a conveying channel (22) of the conveying equipment are provided for extracting the reducing agent out from one of the containers (16). Another conveying channel (30) of the conveying equipment is switched for extracting the reducing agent out from the other container (18) by a transfer valve (24). A filling quantity measuring device (38) is provided at the former container, which is operationally coupled with the transfer valve.

Dosing system for injecting fluid into exhaust tract of internal combustion engine, comprises pumping unit, which is hydraulically connected with fuel injection system

The dosing system is connected with a fuel injection system, which is formed for injecting fuel under pressure into a combustion chamber. The dosing system comprises a pumping unit (4), which is hydraulically connected with the fuel injection system, such that the fluid is injected into the exhaust tract by pressure produced in the fuel injection system.

Improved Fuel Vaporiser System

Vehicle catalyst liquid additive transport arrangement

Selective dosing module control system

Systems and methods to selectively control plurality of dosing modules may include receiving data indicative of an exhaust flow rate. An amount of reductant to be dosed may be determined based, at least in part, on the data indicative of the exhaust flow rate. A decomposition delay time may also be determined and a first dosing module and a second dosing module may be selectively activated. The first dosing module may be selectively activated at a first time and the second dosing module is selectively activated at a second time. The second time is based on the first time and the determined decomposition delay time.

Multi doser SCR system

A Selective Catalytic Reduction (SCR) system 10 comprises a tank 12 (containing a reagent R), a pump 14, a first doser 16 and a last doser 30. The dosers are arranged in-line. A first feed pipe 18 connects the first doser and the pump. A last feed pipe is arranged between the first doser and the last doser. A plurality of dosers may be arranged in series so each doser receives reagent from the previous doser in line. All the dosers apart from the last doser may have an inlet 22 for receiving reagent and an outlet 24 for delivering reagent to the next doser in line. All the feed pipes in the system may directly extend from an outlet to an inlet of a doser. The system may be free from connecting blocks, manifolds, distributors and T-junctions.

Systems and methods for purging an exhaust reductant delivery system

Dosing module having removable dosing tray

Compact radial exterior exhaust assisted decomposition reactor pipe

Method, apparatus and device for improved aftertreatment of exhaust gas

A mixing device 260 for aftertreatment of an exhaust gas. The mixing device comprises a housing 261 defining an inner cavity 262, an exhaust inlet 252 into the inner cavity, an exhaust outlet 290 from the mixing device, and a double funnel-shaped tubular flow guide 263 in the inner cavity. The flow guide has first and second funnel-shaped portions 301, 302 connected at their smaller diameters, the first portion defining an inlet 264 of the flow guide, and the second portion defining an outlet 265 of the flow guide. The flow guide forms a swirling flow of exhaust gas around the flow guide within the inner cavity. A slot 266 between the inlet of the flow guide and a first end wall 267 of the inner cavity allows the swirling flow to enter the flow guide, and flow there through to the outlet thereof. The mixer unit may be provided downstream of a diesel particulate filter (DPF) and a mixer unit which dispenses a reducing agent (such as urea or ammonia), and upstream of a selective catalytic ...

Exhaust gas treatment system

Multi doser scr system

Systems and methods for purging an exhaust reductant delivery system

Selective dosing module control system

Apparatus, system and method for heating diesel exhaust fluid heating control

Method to reduce urea crystal formation in an SCR doser

Producing ammonium carbamate and reducing nitrogen oxides

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

FAILURE DIAGNOSTIC DEVICE FOR EMISSION CONTROL SYSTEM AND FAILURE DIAGNOSTIC PROCEDURE FOR EMISSION CONTROL SYSTEM

DOSING SYSTEM FOR POLLUTANT REDUCTION IN MOTOR VEHICLE EXHAUST GASES

SYSTEM FOR THE STORAGE OF ENGINE EXHAUST ADDITIVES

HEATABLE PLUG CONNECTOR

PROMOTION MODULE FOR SELECTIVE CATALYTIC REDUCTION

EMISSION CONTROL DEVICE

DOSING SYSTEM FOR A LIQUID MEDIUM, IN PARTICULAR UREA WATER SOLUTION

HEATABLE MEDIUM LINE

ASSEMBLY ARRANGEMENT FOR A WASTE GAS SYSTEM

ACTIVE SWIMMING UREA HEATERS

DEVICE AND PROCEDURE FOR INJECTING LIQUID IN A GAS FLOW, AND THE DEVICE EXHIBITING SYSTEM FOR THE OFF-GAS TREATMENT OF VEHICLES

CONVEYER SYSTEM FOR A SCR SYSTEM

REDUCING AGENT TANK FOR MAKING AVAILABLE REDUCING AGENT AT AN EXHAUST SYSTEM WITH A STOP VALVE

VEHICLE OFF-GAS TREATMENT SYSTEMS

WASTE GAS EMISSION CONTROL SYSTEM FOR AN ENGINE AND A CONTROL PROCEDURE FOR IT

ABGASREINIGUNGSEINRICHTUNG FÜR DIE ABGASE EINES VERBRENNUNGSMOTORS

The invention relates to an exhaust gas treatment device (10) for cleaning exhaust gases of an internal combustion engine, having a housing (11) to which exhaust gases (17) of an internal combustion engine can be fed via an exhaust gas inlet opening (12) and from which cleaned exhaust gas can be discharged via an exhaust gas outlet opening (13), wherein a fluid inlet arrangement (21) is provided, an exhaust gas cooling arrangement (14) is provided in the area of the exhaust gas inlet opening (12).

PROCEDURES FOR BRINGING A REDUCING AGENT OF A NITROGEN OXIDE INTO A GAS MIXTURE AND DEVICE FOR WOULD DRIVE THROUGH THE PROCEDURE

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

SYSTEM AND PROCEDURE FOR THE DECREASE FROM NITROGEN OXIDES BY COMBUSTION ENGINES WITH LEAN BURN PRODUCED EXHAUST GASES

Catalytic treatment of engine exhaust gas

Quality sensor apparatus

An apparatus (100) for measuring quality of a urea solution is operated with at least a portion of the apparatus inserted into the urea solution. The apparatus (100) includes a configuration of sensors (180, 190, 200) for measuring mechanical and electrical properties within a volume of the urea solution, the measurements of mechanical and electrical properties being mutually differently influenced by components present in the urea solution. A data processing arrangement (230) of the apparatus (100) is operable to process the measurements of mechanical and electrical properties for generating output data (120) indicative of a quality of the urea solution. The apparatus (100) is also capable of being adapted to measure qualities of other types of solution.

Tractor

A tractor according to an embodiment of the present invention includes a first exhaust gas treatment unit, a second exhaust gas treatment unit, a urea water tank, and a urea water pump. The first exhaust gas treatment unit is provided above an engine inside a hood. The second exhaust gas treatment unit is provided laterally outside one of right and left sides of the hood, and uses urea water to further treat exhaust gas purified by the first exhaust gas treatment unit. The urea water tank is provided laterally outside another of right and left sides of the hood, and stores therein the urea water. The urea water pump is provided behind the second exhaust gas treatment unit, and supplies the urea water stored in the urea water tank to the second exhaust gas treatment unit.

REMOVAL OF PARTICULATES FROM DIESEL ENGINE EXHAUST GAS

SYSTEM AND METHOD FOR SUPPLYING OXYGENATE REDUCTANTS TO AN EMISSION TREATMENT SYSTEM

The invention provides a method for supplying reductants to an emission treatment unit (32) including supplying a first premixed fuel stream (14) to an engine (12), wherein the engine is configured to create an exhaust stream (30). A second premixed fuel stream (20) is supplied to a separation unit (18), wherein the first and second premixed fuel streams (14, 20) each comprise an oxygenate reductant component and a primary fuel component. At least a portion of the second premixed fuel stream is separated into a first fraction stream (42) and a second fraction stream (44) via the separation unit, wherein the first fraction stream comprises a higher concentration of the oxygenate reductant component than the second fraction stream, and supplying the first fraction stream to an emission treatment unit to treat the exhaust stream. The invention further provides a system to carry out said method.

METHOD AND APPARATUS FOR REDUCING EMISSIONS IN DIESEL ENGINES

A method of reducing emissions from a diesel engine including the steps of providing an injector to an exhaust outlet of the diesel engine, the injector having an orifice with a diameter of about 0.006 inch or less, providing a reagent to the injector at an inlet pressure between about 120 psi and about 60 psi, actuating the injector on and off at a frequency between about 10 Hz and about 1 Hz with an on-time of about 1 % or more, injecting the reagent via the orifice into the exhaust outlet at an injection rate, and wherein varying of at least two of the inlet pressure, the frequency, and the on-time achieves a turn-down ratio of a maximum injection rate to a minimum injection rate of at least about 31 :1.

INJECTION DEVICE

The invention relates to a device for injection of a liquid agent, such as fuel or reducing agent, into the exhaust line from a combustion engine. The device (1) comprises a nozzle arrangement (20) having a nozzle head (21), from which the liquid agent is injectable into the exhaust line. The nozzle arrangement (20) comprises a first conduit (22) leading to the nozzle head (21) for supply of compressed gas, preferably in the form of compressed air, to the nozzle head, and a second conduit (23) leading to the nozzle head (21) for supply of said liquid agent to the nozzle head. The nozzle head (21) is provided with at least one outlet opening (24) connected to the first conduit (22) and to the second conduit (23), through which outlet opening said liquid agent is injectable into the exhaust line under atomization thereof after mixing with compressed gas in a mixing zone (25) inside the nozzle head .

Ammonia injection system.

In einer Ausführungsform enthält ein System (10) ein Emissionsverringerungssystem (33) mit einem Verdichter (36) in Fluidverbindung mit einem Katalysatormischtank (34). Der Verdichter (36) ist dafür konfiguriert, einen Luftstrom auszugeben, um einen Katalysator aus dem Katalysatormischtank (34) an ein Katalysatoreinspritzgitter (32) auszugeben. Eine Temperatur des Luftstroms wird durch den Verdichter (36) erhöht.

ammonia injection system.

Die vorliegende Erfindung betrifft verbrennungsbasierte Anlagen (10), insbesondere Gasturbinenanlagen, mit einem Ammoniakeinspritzsystem (33). Das Ammoniakeinspritzsystem (33) beinhaltet ein Ammoniakeinspritzgitter (AIG) (32), das zur Einspritzung von Ammoniak in ein Abgas (26) aus einem Verbrennungsprozess konfiguriert ist, einen Ammoniakmischtank (34) in Fluidverbindung mit dem AIG (32) sowie einen Verdichter (36) in Fluidverbindung mit dem Ammoniakmischtank (34), wobei der Verdichter (36) dafür konfiguriert ist, einen Luftstrom mit einer Temperatur zum Verdampfen des Ammoniaks in dem Ammoniakmischtank (34) und mit einem Druck zum Einspritzen des verdampften Ammoniaks in das Abgas (26) über das AIG (32) auszugeben. Dabei ist der Verdichter (36) die einzige Vorrichtung, um die Temperatur des Luftstroms zum Verdampfen des Ammoniaks in dem Ammoniakmischtank (34) zu erhöhen.

Kraftstoffversorgungseinrichtung zum Zuführen eines Kraftstoffs und eine Verbrennungskraftmaschine.

Die Erfindung betrifft eine Kraftstoffversorgungseinrichtung zum Zuführen eines Kraftstoffs an eine Verbrennungskraftmaschine (1), umfassend: einen Kraftstoffspeicher (10) zur Speicherung eines Primärkraftstoffes und wenigstens zwei parallelen Kraftstoffzuführungspfade, die einerseits mit dem Kraftstoffspeicher (10) und andererseits mit der Verbrennungskraftmaschine (1) verbunden sind, wobei mittels des ersten Kraftstoffzuführungspfad der Primärkraftstoff aus dem Kraftstoffspeicher (10) der Verbrennungskraftmaschine (1) zum Zwecke der Verbrennung zuführbar ist, und der zweite Kraftstoffzuführungspfad wenigstens eine Reformierungsvorrichtung (20) aufweist, der den aus dem Kraftstoffspeicher (10) zugeführten Primärkraftstoff in einen Sekundärkraftstoff reformiert, und um zumindest einen Teil des erzeugten Sekundärkraftstoffes der Verbrennungskraftmaschine (1) zum Zwecke der Verbrennung zuzuführen ...

Regeneration system and method for particulate traps

The invention provides a regenerating system and method for a particulate traps. An internal combustion engine system has an internal combustion engine with an intake for air and an exhaust for products of combustion. The engine has a turbocharger for pressurizing intake air in response to passage of the products of combustion. An exhaust aftertreatment device receives the exhaust from the engineto filter diesel particulates. A device for regenerating the exhaust aftertreatment device has a feed line and nozzle for injecting duel upstream of the exhaust aftertreatment device on a periodic basis. A system and method for purging the fuel line and the nozzle utilizes pressurized air from the engine turbocharger via an air tank when the regenerating device is not injecting fuel.

Method and device for ammonia storage and delivery using in-situ re-saturation of a delivery unit

Electric heating medium pipe and a method of manufacturing the same

A fluid transfer system and method

The present invention relates to a fluid transfer system and method for transferring fluid from a reservoir (2) and to (a) delivery device typically being (a) nozzle. The present invention relates in particular to transferring urea in highly accurate metered amounts from a reservoir (2) to a nozzle (5) arranged within an exhaust system (4) of a combustion engine (1) or combustion engines.

Method and device for providing a gaseous mixture

The invention relates to a device (1) for providing a gaseous mixture comprising at least one of the following substances: a) at least one reducing agent and, b) at least one reducing agent precursor. A reservoir (20) is configured for the aqueous solution (45) comprising at least one reducing agent precursor. Said aqueous solution (45) can be transported from said reservoir by transporting means (19) in at least on supply line (2) equipped with output openings (3). The invention is characterised in that said device comprises means (4) for heating the supply line (2), said means being able to heat at least one supply line (2) above a critical temperature that is greater than the boiling point of water. Said inventive device (1) and the inventive method allow the aqueous solution comprising urea to be completely evaporated in an advantageous manner and subsequently hydrolysed to a mixture comprising ammonia. Said mixture is added in an advantageous manner to a SCR catalyst (18) as a reducing ...

ARRANGEMENT FOR MIXING AN ADDITIVE IN THE LIQUID STATE IN AN EXHAUST GAS, AND EXHAUST LINE COMPRISING SUCH A DEVICE

SYSTEM FOR INJECTING A NITROGEN OXIDE REDUCING AGENT INTO AN EXHAUST LINE OF A MOTOR VEHICLE

PROCESS OF DETECTION Of a CHANGE OF CARTRIDGE OF REDUCER IN a SYSTEM SCR, LINE Of EXHAUST AND VEHICLE

PROCESS AND Surveillance device Of a SYSTEM OF DOWNSTREAM TREATMENT OF EXHAUST FUMES

METHOD FOR MONITORING THE PERFORMANCE OF A CATALYST SYSTEM SCR

METHODS FOR DETECTING AND SUPPRESSON OF A PLUG IN A DEVICE FOR THE SELECTIVE CATALYTIC REDUCTION, SYSTEM AND CORRESPONDING MOTOR VEHICLE

Injection system for an internal combustion engine

The present invention relates to an internal combustion engine having an injector which functions as a a positive displacement pump and dispenses an amount of lubricant fixed for each and every operation of the injector. The fluid dispensed could be a lubricant delivered directly to crankshaft bearings, camshaft bearings, tappets or cylinder sleeve. Alternatively the fluid could be fuel, water or urea delivered to an exhaust system upstream of a catalytic converter. The injector can have a one-way valve with a valve element having a domed or conical surface for directing fluid flow across a sharp edge which induces turbulence in the fluid flow.

Method for feeding reducing agent into an exhaust gas system and corresponding exhaust gas system and motor vehicle

A method for feeding reducing agent or reducing agent precursor into exhaust systems of mobile internal combustion engines and an exhaust system are preferably used for internal combustion engines with high nitrogen oxide compound emissions. A feed time is established. An exhaust parameter and/or necessary quantity of reducing agent is determined and a feed state of the reducing agent is defined. The reducing agent is treated if the feed state does not correspond to a stored state. The reducing agent feed to the exhaust system takes place last. The steps are repeated multiple times. This permits reducing agent to be fed into an exhaust system in a state suitable for the exhaust temperature, so that complete conversion of reducing agent takes place and selectively catalytic reduction is also ensured. This reduces the quantity of electrical energy necessary for converting reducing agent. A motor vehicle having the system is also provided.

System for introducing fuels into the exhaust tract of a motor vehicle, and fuel vaporizer for the same

The invention relates to a system for introducing fuel into the exhaust line of a motor vehicle, having a fuel evaporator with a housing, which has an inlet and an outlet, and a heating device arranged in the housing, and a pump for pumping fuel into the fuel evaporator via the inlet. Provision is made for an inlet of the pump to be connected to a branching, which encompasses a first branch for supplying fuel and a second branch for supplying air. The invention further relates to a fuel evaporator for such a system

Systems and methods of determining a quality and/or depth of diesel exhaust fluid

A system for determining a quality and/or depth of a fluid in a tank. The system includes a controller, one or more transducers, and a temperature sensor. A fixed distance transducer transmits a sound wave toward a fixed surface. A depth transducer transmits a sound wave which reflects off a surface of the fluid. The temperature sensor senses a temperature of the fluid in the tank and provides an indication of the temperature to the controller. The controller measures the elapsed time for the sound waves to travel between the fixed distance transducer and a fixed surface and the elapsed time for the sound waves to travel between the depth transducer and the surface of the fluid held within the container. Using the elapsed times and the temperature of the fluid, the controller is able to determine a quality and the depth of the fluid.

Diesel-exhaust-fluid refill detection

A method is provided for detecting a level of diesel-exhaust-fluid (DEF) in a reservoir that is operatively connected to a catalyst for a diesel engine. The method is employed in a vehicle in order to facilitate a refill of the reservoir. The method includes sensing a level of diesel fuel in a fuel tank via a sensor operatively connected to the tank. The method also includes determining whether the vehicle is on an incline using the sensed level of diesel fuel in the fuel tank. The method additionally includes determining the level of DEF in the reservoir if the vehicle is determined to be substantially not on an incline. A system is also provided for detecting a level of DEF in the reservoir.

Method for diagnosing a fault of an scr system

A method is provided for diagnosing a fault in a selective catalytic reduction system having an electric driven transportation device that provide a mass flow of a Diesel Exhaust Fluid into the selective catalytic reduction system. The method includes, but is not limited to applying an electric signal to the transportation device for establishing the mass flow, monitoring a parameter value of the electric signal, monitoring the mass flow provided into the selective catalytic reduction system caused by the transportation device when it is driven with the signal, determining, for the monitored mass flow, the difference between the corresponding parameter value, and a corresponding parameter value stored in a data map.

Control system for internal combustion engine

The present invention is intended to suppress the inflow of an ammonia derived compound to an EGR passage. In the present invention, in an exhaust system, there is arranged an ammonia derived compound addition means in such a position as to enable at least a part of the ammonia derived compound added therefrom to arrive at a connection portion of the EGR passage. Further, in the present invention, the inflow of the ammonia derived compound added from the ammonia derived compound addition means into the EGR passage is suppressed by a suppression means.

Exhaust gas purification apparatus for an internal combustion engine

A liquid additive agent added into an exhaust gas is suppressed from adhering to a sensor. Provision is made for a sensor that is arranged in an exhaust passage of an internal combustion engine; an addition valve that is arranged in the vicinity of or at the downstream side of the sensor in the direction of flow of the exhaust gas, and adds an additive agent into the exhaust passage; a catalyst that is arranged at the downstream side of the addition valve, and receives a supply of the additive agent from the addition valve; and pressure difference generation unit that makes a pressure of the exhaust gas in the surrounding of the sensor higher than a pressure thereof in the surrounding of the addition valve. A pressure difference is caused to generate so that the additive agent is suppressed from flowing toward the direction of the sensor.

Construction machine

A construction machine including an engine, a fuel tank, and a liquid reductant tank. The construction machine further includes a tank cover, and the fuel tank has an upper surface including a high-position surface and a low-position surface located at a lower position than the high-position surface and adjacent to the high-position surface through a step. The tank cover is provided over the low-position surface and at a height position approximately equal to that of the high-position surface to define a liquid reductant tank installation space in cooperation with the low-position surface. The liquid reductant tank has a replenishment port, installed in the liquid reductant tank installation space so that the replenishment port is close to a lower surface of the tank cover.

Delivery device and tank configuration for a reducing agent and motor vehicle having a tank configuration

A delivery device for a reducing agent includes a metallic housing, at least one externally mounted metal suction pipe and an external pressure port. A metallic base plate, at which at least one pump and ducts are provided, is disposed inside the housing. The suction pipe, the housing, the metallic base plate, and the pump are in heat-conducting contact with each other. An elongate heating element is disposed next to the suction pipe. A tank configuration for a reducing agent and a motor vehicle having a tank configuration, are also provided.

Exhaust system having thermally conductive dosing channel

An exhaust system for use with a combustion engine is disclosed. The exhaust system may have an exhaust passage, a reduction catalyst disposed within the exhaust passage, and an injection device configured to inject reductant into the exhaust passage upstream of the reduction catalyst. The exhaust system may also have a dosing channel forming a portion of the exhaust passage. The dosing channel may have a thermal conductivity different than adjacent upstream and downstream portions of the exhaust passage and extend a distance upstream of the injection device sufficient to transfer enough heat to an extension of the dosing channel downstream of the injection device to cause vaporization of reductant that impinges on the downstream extension.

System and method for controlling emissions in a combustion system

A system includes an emissions control system. The emissions control system includes a chemical injection conduit. The emissions control system also includes a chemical injector coupled to the chemical injection conduit, wherein the chemical injector is configured to output an emissions control chemical into the chemical injection conduit. The emissions control system further includes a wave generator coupled to the chemical injection conduit, wherein the wave generator is configured to output multiple waves that propagate through the chemical injection conduit into a flow path of combustion products to drive improved mixing of the emissions control chemical with the combustion products.

Decomposition conduit fabrication method

A method of fabricating a decomposition conduit with an in-line static mixer, the method comprising molding a decomposition conduit housing around a sand core by inserting molding material into a cavity between a decomposition conduit housing mold and the sand core, where the sand core includes a static mixer and, where the act of molding the decomposition conduit housing is operative to mount the static mixer to the molded decomposition conduit housing.

Motor Vehicle Having a Storage Tank for a Reducing Agent

A motor vehicle includes a tank for storing a liquid reducing agent suppliable to the exhaust system of an internal-combustion engine, and an air delivery device, by which an excess pressure can be built-up in a cushion of air situated in the tank above the reducing agent level. Via the air delivery device, alternatively, a vacuum is generatable in the air cushion, which vacuum supports feeding of the agent into the tank. Via the vacuum in the air cushion, reducing agent can also be returned from a pipe, which leads the reducing agent to the exhaust system, back into the tank, and/or additional liquid reducing agent can be transferred from a storage tank by way of a supply duct.

Delivery device for delivering a reducing agent and motor vehicle having a delivery device

A delivery device for delivering a reducing agent from a reducing agent tank to an exhaust gas treatment device of an internal combustion engine, includes a partially rigid reducing agent line and a delivery pump disposed in the reducing agent line and having a delivery direction from the reducing agent tank to the exhaust gas treatment device. The delivery device has at least one vibration compensating device selected from the following group: an inflow compensating device upstream of the delivery pump in the delivery direction, an outflow compensating device downstream of the delivery pump in the delivery direction, a pump-internal compensating device within the delivery pump, and a structure borne noise compensating device on a fixing of the delivery pump. A motor vehicle having the delivery device is also provided.

Urea injector diagnostics using spectral analysis for scr nox reduction system

A method to indicate an injector fault in a urea dosing module in an aftertreatment system includes monitoring a control command for the urea dosing module, determining a carry frequency for the control command, monitoring a delivery line pressure for the delivery line, evaluating the delivery line pressure at the carry frequency, and indicating the injector fault based upon the evaluating.

Reducing agent injection nozzle and nitrogen oxide purification system with reducing agent injection nozzle

A reducing agent injection nozzle includes a nozzle body, the lower end portion of the nozzle body is provided with flat opening surfaces which are inclined so as to face different directions, the opening surfaces of the lower end portion of the nozzle body are each provided with a pair of injection apertures which are opened to the opening surfaces, and the pair of injection apertures are formed so that aqueous urea solutions respectively injected from the injection apertures collide with each other.

Exhaust emission control device

Arranged are a selective reduction catalyst for reacting NO x in exhaust gas 2 with ammonia, an exhaust passage 5 for guiding the exhaust gas 2 to the selective reduction catalyst, and a urea water addition unit 4 incorporated in the exhaust passage 5 for adding urea water 3 into the exhaust gas 2. A portion of the exhaust passage 5 adjacent to an added position of the urea water 3 is constituted by a divisional piece 5 a made of material having higher corrosive resistance to a substance produced by addition of the urea water 3 than that of a material constituting the remaining portion of the exhaust passage 5 other than the adjacent portion.

Def pump and tank thawing system and method

A fluid supply system configured to be utilized with a coolant system of an engine, the fluid supply system including; a fluid tank, a fluid pump coupled to the fluid tank and a thermal management system in thermal communication with the fluid tank and the fluid pump, wherein the thermal management system includes; a first coolant circuit in thermal communication with the fluid tank and a second coolant circuit in thermal communication with the fluid pump, wherein flow of coolant from the coolant system through the first fluid circuit and second fluid circuit is in parallel when coolant flows through the second fluid circuit.

Emission control system for a vehicle

In accordance with an exemplary embodiment, an emission control system and method is provided for a vehicle. The system comprises a reductant reservoir having an intake pipe for receiving reductant and a heater for heating the reductant. A pump provides the heated reductant to an injector and also to a conduit extending into the intake pipe to provide heated reductant into the intake pipe to melt any frozen reductant in the intake pipe. The method comprises heating reductant stored within a reservoir of a vehicle emission control system, and pumping the heated inductant into an intake pipe of the reservoir to melt any frozen reductant in the intake pipe.

Reductant Injection Control System

A control system for reducing nitrogen oxides in an engine exhaust of an engine includes an emissions catalyst having an inlet adapted to receive an exhaust from the engine. A reductant tank stores a reductant. An injector is in fluid communication with the reductant tank and is operable to inject the reductant into the exhaust upstream of the catalyst. A reductant pump pumps the reductant from the reductant tank to the injector. A controller determines a target pressure of the reductant based on an engine operating condition and operates the reductant pump based on the target pressure.

Purge phase control strategy for a selected catalytic reduction system

The method according to the invention is a method for controlling the purging of a sélective catalytic réduction System ( 1 ) for a vehicle. The sélective catalytic réduction System ( 1 ) has a pump ( 4 ) for reducing agent ( 3 ), at least one supply line ( 5 ) supplying reducing agent ( 3 ) to an exhaust line ( 10 ) of the vehicle, and a purge fluid suction device. The method is characterized in that it involves determining a purge duration as a fonction of a state of fill of the supply line ( 5 ) prior to activation of the purge phase, and in that the method forther comprises the updating of the purge duration during purging.

Method for metering a reducing agent, method for setting up a control unit for a metering device and motor vehicle having a metering device

A method for metering a reducing agent from a metering device to an exhaust gas treatment device includes initially determining at least one operating parameter of the metering device. An injector pressure at an injector for feeding the reducing agent into the exhaust gas treatment device is then calculated from the at least one operating parameter. Then, an opening time for the injector is calculated, in which at least the injector pressure determined in step b) is used. The injector is then opened for the opening time calculated in step c). A method for setting up or configuring a control unit for a metering device and a motor vehicle having a metering device are also provided.

Solid scr system and heating method for solid scr reductant using the same

A solid SCR system includes solid state reductant, a container storing the solid state reductant, an exhaust pipe supplying gas state reductant converted from the solid state reductant and SCR catalyst disposed on the exhaust pipe, an exhaust heat recovery device disposed on the exhaust pipe and recovering waste heat from exhaust gas exhausted through the exhaust pipe and a heat exchanger connected to the exhaust heat recovery device and supplying the recovered heat to the solid state reductant.

Device for reducing pollutants in the exhaust gas flow of an internal combustion engine

The invention relates to a device ( 40 ) for reducing pollutants, in particular nitrogen oxides, in an exhaust gas flow of an internal combustion engine, comprising a reducing agent ( 46 ), in particular a urea-water solution, which is stored in a storage tank ( 42 ), a metering module, in particular a nozzle ( 68 ), for injecting the reducing agent ( 46 ) into the exhaust gas flow, and a pump ( 56, 100 ) for delivering the reducing agent ( 46 ) from a suction point ( 62 ) in the storage tank ( 42 ) to the metering module via lines ( 58, 66 ). According to the invention, the pump ( 56, 100 ) lies beneath a reducing agent level ( 44 ) in the storage tank ( 42 ), and a non-return valve is provided. As a result of the non-return valve, the device ( 40 ) is prevented from refilling with the reducing agent ( 46 ) after the reducing agent ( 46 ) is completely sucked back from the device ( 40 ) after shutting off the internal combustion engine, in particular after extended idle times of the internal combustion engine. In a first embodiment, the non-return valve is a filter ( 64 ) that is formed with a plurality of screens ( 80, 82, 84, 86 ) which are connected one behind the other, which have a special microstructure, and which are formed with a plastic material. In the case of a second embodiment, the non-return valve is formed with a hermetically sealing valve ( 158 ) which is heavily preloaded by a spring force in particular and which is directly integrated into the pump ( 100 ) that is necessary for delivering the reducing agent ( 46 ) in the device ( 40 ).

Selective catalytic reduction sensor

Provided is an SCR sensor that does not degrade a measurement accuracy of a quality sensor even when a remaining amount of a urea tank is reduced. A quality sensor 122 is installed between a minimum remaining amount liquid level S and a bottom portion 105 b of a urea tank 105; a drop pipe 131 is installed from a ceiling portion of the urea tank 105 to a top space in the urea tank 105; a support 174 is installed from the bottom portion to the ceiling portion of the urea tank 105; the quality sensor 122 and the drop pipe 131 are integrated through the support 174; and a bubble diffusion region B caused by the urea aqueous solution dropping from the drop pipe 131 is out of a sensitive region F of the quality sensor 122.

Valve arrangement for metering a fluid medium in an exhaust line of an internal combustion engine

The invention relates to a valve arrangement ( 2 ) for metering a fluid medium into an exhaust line ( 22 ), comprising a valve seat ( 10 ) which acts together with a closing body ( 12 ) and in which a valve passage ( 14 ) is implemented, and a perforated disc ( 6 ) that is disposed downstream of the valve seat, closes off the valve passage, and has at least one axial hole ( 8 ) in the area of the valve passage through which the fluid medium can be injected into the exhaust line ( 22 ). The valve arrangement further comprises a connecting flange ( 16 ) for connecting the valve arrangement ( 2 ) to the exhaust line ( 22 ) in a fluid-tight manner, wherein the perforated disc ( 6 ) extends from the valve passage to the connecting flange and is implemented such that said perforated disc seals the connecting flange against the exhaust line in a fluid-tight manner in the installed state. A separate seal is thus no longer required, because the perforated disc performs the sealing function.

Urea heating system and heating method thereof

A urea solution heating device prevents freezing of a urea solution by using exhaust gas of an engine. More particularly, a urea solution heating device may use a pressure difference between an exhaust gas pipe and a muffler to bypass the exhaust gas to exchange heat between the exhaust gas and the urea solution. The urea solution heating device may include an exhaust gas pipe, a muffler, a first bypass pipe diverged from the exhaust gas pipe, a urea solution tank to which the bypassed exhaust gas is supplied, a second bypass pipe connected to the muffler, and a heat exchanger, wherein the exhaust gas sequentially flows through the first bypass line, the heat exchanger, and the second bypass line by a pressure difference between the exhaust gas pipe and the muffler. An urea solution heating method is also described.

Mis-fill prevention system

A reductant delivery and supply system including a storage tank, a pump, a dosing module, and a mis-fill prevention system. The storage tank stores a fluid. The pump is coupled to the storage tank by a delivery line. The dosing module is coupled to the pump by a supply line. The mis-fill prevention system includes an expandable plug. The expandable plug is configured in contact with the fluid. Moreover, the expandable plug is configured to expand on contact with a hydrocarbon.

Exhaust gas purification system

A diesel particulate defuser (DPD) for collecting particulate matter (PM) in exhaust gas is connected to an exhaust pipe of a diesel engine, and when the amount of PM in the DPD becomes equal to or greater than a predetermined amount, the exhaust gas temperature of the diesel engine is increased by performing exhaust pipe injection and DPD is automatically regenerated. In such an exhaust gas purification system, an exhaust gas temperature during DPD regeneration in automatic regeneration is detected, a difference between the detected exhaust gas temperature and a target regeneration temperature is determined, and in a case where an exhaust pipe injection amount is PID controlled based on the difference, when a transition is made from the traveling automatic regeneration to the idle automatic regeneration conducted during a stop, an integral control term in the PID control is reset to zero to control the exhaust pipe injection amount.

Reactant delivery for engine exhaust gas treatment

A reactant delivery system for engine exhaust gas treatment may include a tank in which a reactant is received, a pumping device, a pressure relief device, and a reactant distribution device. The pumping device may have an inlet disposed within the interior of the tank to receive the reactant, and an outlet through which the reactant is discharged. The pressure relief device may have an inlet in fluid communication with the outlet of the pumping device, a primary outlet to discharge the reactant under pressure to a downstream location, and a bypass outlet through which at least some of the reactant discharged from the pumping device is selectively discharged. And the reactant distribution device may be in fluid communication with the bypass outlet of the pressure relief device and have a plurality of outlets to distribute the reactant to at least two different locations within the tank.

Fluid reservoir having a heating reserve bowl

The invention relates in particular to a reservoir for a urea-based reducing agent, with an integrated electric heating element, usable on a heat engine vehicle for pollution control. The heating element ( 10 ) provided to thaw the reducing agent ( 6 ) is placed inside a cavity ( 16 ) delimited by a bowl ( 13 ), itself placed inside the reservoir ( 1 ). The cavity ( 16 ) of the bowl ( 13 ) communicates with the inner volume ( 5 ) of the reservoir by a valve ( 20 ). A suction pipe ( 12 ) for the reducing agent is submerged in the cavity ( 16 ) of the bowl ( 13 ), the starting point ( 18 ) of said pipe being situated near the heating element ( 10 ). Operation is thus guaranteed when the vehicle is under sloping and inclined conditions, and also in case of freeze.

Methods for an exhaust fluid sensor

Various methods are provided for diagnosing an exhaust fluid sensor disposed in an exhaust fluid passage. By monitoring the sensor during conditions when it is in contact with the exhaust fluid and when it is not in contact with the exhaust fluid, an expected change in the sensor output can be monitored to identify whether the sensor is generating sufficiently accurate readings.

Heatable medium pipe and method for producing same

A heatable medium pipe having at least one pipe connector and heating element, wherein the heating element has a few wires, in particular two wires, and said wires extend continuously along the medium pipe and along the at least one pipe connector. In a method for producing such a heatable medium pipe, the heating element is continuously wound around a tubular medium pipe and the heating element is pre-assembled on the medium pipe in that the heating element is fastened or fixed by at least one fastening element, the medium pipe is cut to a first length for the particular application, the length corresponding to the desired medium pipe length (I R ) plus the heating element length (I H ) required for wrapping around the at least one pipe connector and the transition area the fastening element is removed in the region outside the desired medium pipe length (I R ), the heating element is unwrapped from the medium pipe section cut from the first length, the medium pipe is cut to the desired medium pipe length (I R ) to form a second medium pipe section, the medium pipe section is connected to the at least one pipe connector as the medium pipe, and the heating element is at least wrapped around the at least one pipe connector.

Quality Sensor Apparatus

An apparatus ( 100 ) for measuring quality of a urea solution is operated with at least a portion of the apparatus inserted into the urea solution. The apparatus ( 100 ) includes a configuration of sensors ( 180, 190, 200 ) for measuring mechanical and electrical properties within a volume of the urea solution, the measurements of mechanical and electrical properties being mutually differently influenced by components present in the urea solution. A data processing arrangement ( 230 ) of the apparatus ( 100 ) is operable to process the measurements of mechanical and electrical properties for generating output data ( 120 ) indicative of a quality of the urea solution. The apparatus ( 100 ) is also capable of being adapted to measure qualities of other types of solution.

Method and device pertaining to cooling of dosing units of hc dosing systems for exhaust cleaning

A method pertaining to an HC dosing system for exhaust cleaning for an engine which comprise a dosing unit ( 250 ) for fuel. After cessation of an exhaust flow, deciding about a need to cool the fuel dosing unit by use of fuel. Predicting a temperature pattern of the dosing unit ( 250 ) as a basis for deciding. Predicting whether a predetermined temperature of the dosing unit ( 250 ) will be reached after exhaust flow cessation. Also a computer programme product containing programme code (P) for implementing the method. Also an HC dosing system and a motor vehicle which is equipped with the HC dosing system are disclosed.

Device for providing liquid reducing agent, method for thawing frozen reducing agent and motor vehicle having the device

A device for providing a liquid reducing agent includes a reducing agent tank for storing the liquid reducing agent. The reducing agent tank has at least one heater disposed in a movable manner in the reducing agent tank and constructed as an active heater. A method for thawing frozen reducing agent and a motor vehicle having the device are also provided.

Fluid filter

A fluid filter may include a filter housing including a pot and a lid. A ring filter element may be arranged within the filter housing, through which flow may pass radially and which separates an untreated space from a clean space. The ring filter element may have an upper and a lower end disc. A heating device may be configured to allow heating of the fluid to be filtered. The filter housing may define a port into which the heating device is inserted and the port may separate the heating device from the fluid to be heated.

Method for determining the degree of saturation of solid ammonia storage materials in containers

A method is provided for estimating the degree of saturation (S) of a reversible solid ammonia storage material ( 3 ) in a storage unit ( 1 ). The storage unit ( 1 ) is equipped with a heater ( 2 ) to release ammonia and a connected tube ( 4 ) for ammonia flow. The initial temperature (T INIT ) is measured with a sensor ( 9 ) in or around the storage unit ( 1 ) before any heating is initiated. Heating is initiated while recording the active time of heating (t) or the amount of energy (Q) released by the heater. The desorption pressure created by solid storage material in the storage unit ( 1 ) is measured via a pressure sensor ( 8 ) in fluid communication with the storage unit ( 1 ). The time (t TARGET ), or the heat (Q TARGET ) where the pressure reaches a certain target pressure (P TARGET ) is recorded. The values of the target-pressure time (t TARGET ), or the target-pressure heat (Q TARGET ), and the initial temperature (T INIT ) are used to compute an approximate degree of saturation (S).

Exhaust gas sensor module

Described herein is a sensor module for sensing characteristics of a fluid flowing through a fluid conduit. The sensor module includes a sample probe with at least one sample arm that extends radially inwardly from a sidewall portion of the fluid conduit to a center portion of the fluid conduit, defines a fluid flow channel, and includes a plurality of inlet apertures. The sample probe also includes a sensor well that is located at a radially outer end of the at least one sample arm. The sensor well defines an interior volume that is in fluid communication with the fluid flow channel, an upstream portion closed to an first portion of the fluid conduit upstream of sensor well, and a discharge aperture open to a second portion of the fluid conduit downstream of the sensor well. The sensor module also includes a sensor positioned in the interior volume.

Injection device for introducing a urea solution into the exhaust tract of an internal combustion engine

The invention relates to an injection device ( 1 ), designed in particular for injecting fluid into an exhaust tract of an internal combustion engine, having a valve needle ( 14 ), an injection chamber ( 12 ) having at least one injection opening ( 44 ), and a control chamber ( 20 ). The injection device ( 1 ) is designed such that a pressure differential between the injection chamber ( 12 ) and the control chamber ( 20 ) brings about a displacement of the valve needle ( 14 ) between an open position in which a fluid flow through the injection opening ( 44 ) from the injection chamber ( 12 ) is released, and a closed position, in which the injection opening ( 44 ) is closed off. The injection chamber ( 22 ) and the control chamber ( 20 ) are hydraulically connected to an inlet ( 40, 42; 9 ), such that a pressure rise in the inlet ( 40, 42; 9 ) results in a pressure rise in the injection chamber ( 12 ), and a pressure rise in the control chamber ( 20 ) delayed in time relative to the pressure rise in the injection chamber ( 12 ), and said pressure differential brings about a displacement of the valve needle ( 14 ) from the closed position into an open position.

Motor Vehicle Exhaust Line

A Motor vehicle exhaust line includes a hot pipe, and a cold pipe for exhaust gases. A mechanical decoupling element connects a downstream end of the hot pipe to an upstream end of the cold pipe. The exhaust line also includes a nitrogen oxide treatment device and an injector intended to reinject a reagent into, or to produce a reagent in the exhaust line upstream of the nitrogen oxide treatment device. The exhaust line includes a mixer intended to mix the exhaust gases and the reagent injected or produced by the injector. The mixer is positioned upstream of the nitrogen oxide treatment device. The nitrogen oxide treatment device is disposed in the cold pipe downstream of the mechanical decoupling element. The injector and the mixer form an assembly connected directly to the mechanical decoupling element.

Insert for a Filler Neck of a Urea Container

An insert for a filler neck of a urea container in diesel-operated motor vehicles, preferably lorries, wherein two plastic components which preferably engage into one another and receive, between them, a preferably annular component which is composed of magnetic material and is magnetized permanently before the installation, are welded to one another in a gas-tight and liquid-tight manner.

Exhaust gas purification system

The present invention relates to a technology of reducing nitrogen oxide (NOx) which is harmful discharge gas discharged from an internal combustion engine or a combustor, and to an exhaust gas purification system which inputs solid ammonium salt such as ammonium carbamate or ammonium carbonate into a reactor, thermally decomposes and converts the solid ammonium salt into the ammonia by using engine cooling water, exhaust gas, or an electric heater, which are installed in the reactor, and reduces the nitrogen oxide included in the exhaust pipe on a selective catalytic reduction into nitrogen by injecting the ammonia by using a pressure regulator and a dosing valve.

Burner device for raising temperature of exhaust gas

A burner device placed upstream of an exhaust treatment device mounted in an exhaust pipe to raise a temperature of an exhaust gas, comprises a fuel supply valve for supplying fuel into the exhaust pipe, an igniter that ignites the fuel supplied from the fuel supply valve, and a burner catalyst held in the exhaust pipe through a support member. The support member is formed in a corrugated shape in cross section including outer arc-shaped portions in contact with the exhaust pipe, inner arc-shaped portions in contact with an outer peripheral member of the burner catalyst, and coupling portions for coupling the outer arc-shaped portions and the inner arc-shaped portions to each other.

Exhaust system having multiple dosers

An exhaust system for a machine is disclosed. The exhaust system may have a diffuser configured to receive exhaust from an engine. The exhaust system may further have a plurality of dosers associated with the diffuser and configured to inject fuel into the diffuser. The exhaust system may also have a controller configured to selectively control an amount of fuel injected by each of the plurality of dosers based on a velocity of the exhaust adjacent to each doser. In addition, the exhaust system may have an after-treatment component fluidly connected downstream of the diffuser and configured to heat the exhaust by oxidizing the injected fuel.

Service test for exhaust gas treatment system

A service procedure to test the SCR device involves turning on an upstream and downstream SCR NOx sensor, turning off an NH 3 injector, running the engine until enough upstream NOx mass has been generated by the engine to deplete any NH 3 load remaining in the SCR device, determining the operational status of the NOx sensors as follows: if 1−downstream NOx ppm/upstream NOx ppm=approx. 0; then the downstream NOx sensor is reading the same as the upstream NOx sensor and the downstream NOx sensor is determined to be good and the SCR device may have to be replaced; and if 1−downstream NOx ppm/upstream NOx ppm>approx. 0; then the downstream NOx sensor is reading high and the downstream NOx sensor is determined to be bad and downstream NOx sensor may have to be replaced.

Filler neck for an auxiliary liquid reservoir

The invention relates to a filler neck ( 1 ) for an auxiliary liquid reservoir for a motor vehicle, in particular for a urea reservoir, having a neck housing ( 9 ), which defines a mouth hole stub ( 10 ) for a filler nozzle ( 7 ) and a filling channel ( 11 ) leading into the reservoir, wherein a receiving structure for a filler nozzle ( 7 ) is provided within the neck housing ( 9 ). At least one venting path, which is of enlarged cross section, at least in a section or sections, and of chamber-like or labyrinth-like design, is formed within the neck housing ( 9 ), allowing a venting flow parallel and counter to the refilling volume to flow through the neck housing ( 9 ) during refilling.

Metering Arrangement and Method for Operating a Metering Arrangement

A method and arrangement for controlling heating and thawing of a metering arrangement with a metering device for the feeding of a reducing agent solution for the exhaust gas after treatment in an exhaust system. The metering device is connected with a supply container for the reducing agent solution via at least one pipe. At least one heating device is provided for the heating of at least one component of the metering arrangement. At least one first component of the metering arrangement is assigned a first heating device, which can be operated separately from a second heating device provided for the heating of at least a second component of the metering arrangement.

Line connector for media lines

A line connector having a connector piece with at least one junction portion for junction connection to a media line or to an assembly, a transitional portion contiguous to the junction portion, and a flow duct. In at least the region of the transitional portion, an electrical heating element for the media line is provided in an arrangement at least partially surrounding the flow duct. The connector piece, together with the heating element, is surrounded by an outer cladding. At least one of the junction portions is designed as a hollow, cylindrical receptacle for directly plugging in the end of the media line, the media line being capable of being fastened in a materially integral manner. The junction portion including, at least in regions, a material transparent to laser beams in such a way that the media line can be fastened by way of laser welding.

Common rail reductant injection system

An exhaust system including a selective catalytic reduction (SCR) component and an oxidation catalyst component. The exhaust system also includes an exhaust treatment fluid injection system for dispersing an exhaust treatment fluid into an exhaust stream at a location adjacent either the SCR component or the oxidation catalyst component, wherein the exhaust treatment fluid injection device includes a common rail that provides the exhaust treatment fluid under pressure to a plurality of injectors that dose the exhaust treatment fluid into the exhaust stream. The exhaust treatment fluid injection device also includes a return rail for returning unused exhaust treatment fluid to the fluid source.

Model-based system and method for mitigating diesel emission fluid deposits

A system and method for mitigating deposit of diesel emission fluid (DEF) decomposition products on interior surfaces of an internal combustion engine exhaust system ( 14 ). A processor in a controller ( 34 ) contains a model-based control algorithm ( 50 A; 50 B) for controlling DEF injection by a DEF injector ( 24 ) to mitigate deposit formation.

Method of operating a selective catalytic reduction (scr) assembly, and assembly therefor

A selective catalytic reduction (SCR) assembly, and method of operating the assembly, is described. In one example, the SCR assembly includes an SCR line, a flow restrictor, and a pressure sensor. The SCR line carries a reducing agent such as urea, and the flow restrictor is located in the SCR line. The pressure sensor senses the pressure of the reducing agent flowing through the SCR line, and the sensed pressure can be used to do one or more of the following: i) monitor the functionality of the SCR injector, ii) as one or more bases for controlling operation of an SCR fluid pump, and/or iii) determine a volume or volumetric flow rate of reducing agent that is ejected into an exhaust stream.

Reducing Agent Metering System with Metering Chamber for Exact Setting of the Metered Amount

The invention relates to a reducing agent metering system for injection of a reducing agent into the exhaust gas flow of an internal combustion engine for selective catalytic reduction, with a delivery pump ( 2 ) by means of which the reducing agent is delivered from a reducing agent tank ( 1 ) via a delivery line ( 3 ) and is introduced into the exhaust gas flow of the internal combustion engine via at least one nozzle ( 7 ), a metering chamber ( 4 ) being integrated into the delivery line ( 3 ) and being divided into two separate volumes ( 10, 20 ) by means of a position-variable element ( 5 ), each of the two volumes ( 10, 20 ) having at least one input ( 11, 21 ) and at least one output ( 12, 22 ). Furthermore the invention relates to a method for operating such a reducing agent metering system for injection of a reducing agent into the exhaust gas flow of an internal combustion engine for selective catalytic reduction.

Air driven reductant delivery system

A dosing system for delivering reductant to an exhaust gas treatment system of an internal combustion engine using air driven hydraulic pumps for closed-loop controlling reductant pressure and a two-stage PWM control method for controlling dosing rate. Reductant residue in the dosing systems is purged by using compressed air after a dosing process completes, and when the air driven hydraulic pumps are positioned inside a reductant tank, dedicated heating means for the pumps is not necessary. The air driven hydraulic pumps can also use low pressure compressed air, and the closed-loop pressure control together with the two-stage PWM control allow dosing accuracy insensitive to pressure variations in compressed air. These new features enable the dosing system use a variety of compressed air sources, including an engine turbo.

Exhaust Gas After Treatment System

The invention relates to an exhaust gas aftertreatment system for delivering a reducing agent ( 15 ) into the exhaust gas stream of an internal combustion engine for selective catalytic reduction, the system having a reducing agent tank ( 1 ) and a pump ( 3 ) for delivering the reducing agent from the tank ( 1 ) to an injection unit, the tank ( 1 ) having at least one opening, the pump ( 3 ) being made as an integrated unit ( 2 ) and being plugged into the opening of the tank, the integrated unit ( 2 ) forming a tank closure and sealing the tank.

Mixing device in an exhaust gas pipe

In an exhaust gas pipe, a first fluid flows in a flow direction in the pipe, and a second fluid is injected inside the pipe by a nozzle, from an injection inlet arranged in the pipe wall, according to an injection direction. A mixing device fastened inside the pipe upstream from the injection inlet creates turbulence that helps the mixing of the fluids. The mixing device has a first portion located on the injection inlet side of the pipe and a second portion located opposite the injection inlet side of the pipe, the portions being designed so that the fluid velocity is higher downstream from the mixing device second portion than downstream from the mixing device first portion. An aqueous solution of urea can be injected inside an exhaust pipe of a diesel engine.

Reducing agent tank having a sensor for determining a fill level and motor vehicle having the tank

A tank for a reducing agent includes a tank wall having an outer side and an interior at least partially delimited by the tank wall. A sensor is disposed at the tank wall and has a first electrical contact and a second electrical contact. The first electrical contact and the second electrical contact communicate in an electrically conductive manner with the interior, extend through the tank wall from the interior to the outer side of the tank wall and are disposed at a first spacing of less than 5 cm from one another. A motor vehicle having the tank is also provided.

REDUCING AGENT METERING MODULE WITH HEAT TRANSFER COATING

A module for metering a reducing agent intended for a vehicle selective catalytic reduction post-treatment, this module including: a body in which the reducing agent circulates, this body including a first compartment and a second compartment which are separated by a fluidtight partition; and a heating shell partially surrounding the body in the first compartment. The body includes a heat transfer coating made from a thermoplastic elastomer material having a thermal conductivity of at least 3 Watts per meter Kelvin, this heat transfer coating including: a first portion positioned between the heating shell and the body; a second portion partially surrounding the body in the second compartment; and thermal bridges passing through the fluidtight partition and connecting the first portion to the second portion. 292221. The metering module as claimed in claim 1 , wherein the fluidtight partition () comprises open-ended orifices () which are filled by the thermal bridges ().3192. The metering module as claimed in claim 1 , wherein the heat transfer coating () is made as a single piece overmolded on the body ().42. The metering module as claimed in claim 1 , wherein the body () is made as a single piece.51210. The metering module as claimed in claim 1 , wherein the heating shell () is in direct contact with the heat transfer coating ().612919. The metering module as claimed in claim 5 , wherein the heating shell () is fixed to the fluidtight partition () and is clamped against the heat transfer coating ().71924. The metering module as claimed in claim 1 , wherein the heat transfer coating () has ribs () on its an external surface.87215122315. The metering module as claimed in claim 1 , wherein the the first compartment () of the body () comprises electronic means () and wherein the heating shell () is equipped with electrical heating elements () connected to the electronic means ().912137215. The metering module as claimed in claim 1 , wherein the heating shall () is ...

STRAINER

A strainer is provided in an interior of an injection pipe serving as an injection opening through which a liquid containing a reducing agent is injected into a tank body. In the strainer, a front end portion, having a substantially triangular or substantially trapezoidal shape when a cross section is taken along a plane including an axis of a strainer body having a substantially cylindrical shape, is formed integrally with a front end of the strainer body. 1. A strainer for an injection pipe that serves as an injection opening through which a liquid containing a reducing agent is injected into a tank body , the strainer comprising:a strainer body having a substantially cylindrical shape; anda front end portion integrally formed with an end of the strainer body on a side serving as an outlet of the liquid, and having a substantially triangular or substantially trapezoidal shape when a cross section is taken along a plane including an axis of the strainer body.2. The strainer according to claim 1 , wherein the front end portion is formed using a material through which the liquid cannot pass and protruding toward a hollow portion of the strainer body.3. The strainer according to claim 1 , wherein the front end portion comprises:a frame formed using a material through which the liquid cannot pass; anda screen portion formed using a material through which the liquid can pass, andis formed protruding to a side opposite to the strainer body.4. An injection pipe that serves as an injection opening through which a liquid containing a reducing agent is injected into a tank body claim 1 , the injection pipe comprising a strainer claim 1 ,wherein the strainer comprises:a strainer body having a substantially cylindrical shape; anda front end portion integrally formed with an end of the strainer body on a side serving as an outlet of the liquid when the strainer body is disposed in an interior of the injection pipe, and having a substantially triangular or substantially ...

ANTI-CLOGGING DEVICE FOR DIESEL EXHAUST FLUID SUPPLY

An apparatus for supplying Diesel Exhaust Fluid to an engine exhaust gas treatment system includes a reservoir to collect trapped air if the dosing module is clogged with crystalized urea. The reservoir is placed at the dosing valve inlet on a T-connection. The reservoir provides a closed chamber to receive trapped air in the DEF supply line, allowing DEF to flow to the dosing module. When DEF contacts the crystallized urea causing the clog, the urea dissolves, freeing the injector so that normal action of the dosing module is restored. 1. An apparatus for delivering aqueous urea fluid into an exhaust gas system of a combustion engine , comprising:a dosing module mountable on an engine exhaust conduit and configured to deliver aqueous urea fluid to the exhaust conduit;a feed line connected to carry aqueous urea fluid to an inlet of the dosing module; and,a reservoir for collecting air trapped in the feed line connected to the feed line at the inlet of the dosing module, wherein the feed line includes a branch at the inlet of the dosing module, the reservoir connected to the branch.2. The apparatus of claim 1 , comprising a pump connected on the feed line to deliver aqueous urea fluid to the feed line.3. The apparatus of claim 2 , comprising an aqueous urea fluid supply tank and a supply line connecting the supply tank to the pump.4. The apparatus of claim 1 , wherein the reservoir is vertically above the dosing module.5. An apparatus for delivering aqueous urea fluid to an exhaust gas system of a combustion engine claim 1 , comprising:{'b': '10', 'a supply tank for storing aqueous urea fluid;'}{'b': '20', 'a pump having an inlet and an outlet, the inlet connected by a supply line to the supply tank;'}{'b': '30', 'a dosing module ;'}{'b': 24', '26', '40', '42', '20', '44', '30', '46, 'a feed line connecting the pump outlet to the dosing module, the feed line having a T-connector at the dosing module, the T connector having an inlet to receive DEF from the pump , a ...

EXHAUST TRACT HAVING A METERING DEVICE WHICH SPRAYS COUNTER TO A DIRECTION OF FLOW, METHOD FOR OPERATING AN EXHAUST TRACT AND VEHICLE HAVING AN EXHAUST TRACT

Methods and systems are provided for an exhaust tract for vehicles having an internal combustion engine, the exhaust tract including a first exhaust gas aftertreatment device and a metering device arranged downstream therefrom. In one example, a region of the first exhaust gas aftertreatment device which is situated downstream is designed as an SCR region. Further, the metering device is designed to spray a reducing agent onto a side of the first exhaust gas aftertreatment device which faces the metering device, counter to a main direction of flow of an exhaust gas. 1. An exhaust tract for vehicles having an internal combustion engine , comprising:a first exhaust gas aftertreatment device and a metering device arranged downstream therefrom, where a first region of the first exhaust gas aftertreatment device which is situated downstream in the exhaust tract in a main direction of flow of exhaust gas is designed as an SCR region and the metering device is designed to spray a reducing agent onto a downstream-facing side of the first exhaust gas aftertreatment device, counter to the main direction of flow of the exhaust gas.2. The exhaust tract as claimed in claim 1 , further comprising a first mixing device arranged in a spraying region of the metering device.3. The exhaust tract as claimed in claim 1 , further comprising a second mixing device arranged downstream of the metering device.4. The exhaust tract as claimed in claim 1 , wherein a second region of the first exhaust gas aftertreatment device comprises an oxidation catalyst.5. The exhaust tract as claimed in claim 1 , wherein a second region of the first exhaust gas aftertreatment device comprises a NOx storage catalyst.6. The exhaust tract as claimed in claim 1 , wherein a second region of the first exhaust gas aftertreatment device comprises one of an oxidation catalyst and a NOx storage catalyst and wherein the second region and the SCR region of the first exhaust gas aftertreatment device are connected to ...

EXHAUST GAS CONTROL SYSTEM

A first fuel addition valve disposed in a portion of a first exhaust passage upstream from a first upstream purification device, a first urea addition valve disposed in a portion of the first exhaust passage between the first upstream purification device and a first downstream purification device, and a first valve cooling passage configured such that i) refrigerant passes the first urea addition valve and the first fuel addition valve in order, and ii) the refrigerant cools the first fuel addition valve after the refrigerant cools the first urea addition valve. 1. An exhaust gas control system comprising:a first upstream purification device disposed in a first exhaust passage of an internal combustion engine, that is a compression ignition engine, the internal combustion engine configured to be operated to perform lean combustion, the first upstream purification device including an oxidation catalyst;a first downstream purification device disposed in a portion of the first exhaust passage downstream from the first upstream purification device, the first downstream purification device including a selective catalytic reduction catalyst;a first fuel addition valve disposed in a portion of the first exhaust passage upstream from the first upstream purification device, the first fuel addition valve configured to add fuel into exhaust gas;a first urea addition valve disposed in a portion of the first exhaust passage between the first upstream purification device and the first downstream purification device, the first urea addition valve configured to add urea aqueous solution into the exhaust gas; and i) refrigerant passes the first urea addition valve and the first fuel addition valve in order, and', 'ii) the refrigerant cools the first fuel addition valve after the refrigerant cools the first urea addition valve., 'a first valve cooling passage configured such that'}2. The exhaust gas control system according to claim 1 , whereinthe upstream purification device ...

Exhaust Gas Cleaning Component For Cleaning The Exhaust Gases Of An Internal Combustion Engine

An exhaust gas cleaning component, having a housing with an inflow port and an outflow port, a first honeycomb structure in the housing with a casing, the casing having an outer surface over which exhaust gas can flow, and also having an applicator device by which an exhaust gas cleaning additive can be applied to the outer surface of the casing. 19.-. (canceled)10. An exhaust gas cleaning component , comprising:a housing with an inflow port and an outflow port;a first honeycomb body arranged in the housing;a shell of the first honeycomb body having an outer surface over which exhaust gas can flow within the housing; anda feed device configured to feed an exhaust gas cleaning additive onto the outer surface of the shell.11. The exhaust gas cleaning component as claimed in claim 10 , further comprising:at least one bypass duct formed between the outer surface of the shell and the housing through which duct a partial exhaust gas flow of an exhaust gas flow flowing from the inflow port to the outflow port can bypass the first honeycomb body,wherein the feed device is arranged at the at least one bypass duct and configured so that the exhaust gas cleaning additive is fed into the at least one bypass duct.12. The exhaust gas cleaning component as claimed in claim 11 , further comprising:a second honeycomb body, through which the partial exhaust gas flow flowing through the at least one bypass duct flows, is arranged in the at least one bypass duct upstream of the feed device in an exhaust gas flow direction.13. The exhaust gas cleaning component as claimed in claim 11 , further comprising:a heater arranged in the at least one bypass duct upstream of the feed device in an exhaust gas flow direction and configured to heat the partial exhaust gas flow flowing through the at least one bypass duct.14. The exhaust gas cleaning component as claimed in claim 11 , further comprising:a surface heating system arranged at an impact region of the outer surface of the shell at which ...

INTEGRATED REDUCTANT MIXER AND HEATER APPARATUS FOR EXHAUST TREATMENT SYSTEMS

An integrated reductant mixer and heater apparatus for an exhaust treatment system is provided. The apparatus includes a housing for an exhaust stream to flow therethrough in an axial flow direction; a reductant injector configured to deliver a spray of reductant into the exhaust stream; at least one mixing fin disposed within the housing interior downstream of the reductant injector, the mixing fin having a primary deflection surface orientated parallel with, or at an acute angle relative to, the axial flow direction; a first heater element within the housing interior and extending within a first plane intersecting the axial flow direction proximate the primary deflection surface of the mixing fin; and a second heater element within the housing interior and extending within a second plane intersecting the axial flow direction proximate the primary deflection surface of the mixing fin and downstream from the first heater element. 1. An integrated reductant mixer and heater apparatus for an exhaust treatment system , comprising:a housing having a housing wall that defines a housing interior for an exhaust stream to flow therethrough in an axial flow direction coaxial with the housing interior;a reductant injector coupled to the housing and configured to deliver a spray of reductant into the exhaust stream;at least one mixing fin disposed within the housing interior downstream of the reductant injector, the mixing fin having a primary deflection surface orientated parallel with, or at an acute angle relative to, the axial flow direction;a first heater element within the housing interior and extending within a first plane intersecting the axial flow direction proximate the primary deflection surface of the mixing fin; anda second heater element within the housing interior and extending within a second plane intersecting the axial flow direction proximate the primary deflection surface of the mixing fin and downstream from the first heater element.2. The integrated ...

SYSTEM AND METHOD FOR DETERMINING REDUCTANT DELIVERY PERFORMANCE

An apparatus includes a pump, a delivery mechanism in fluid communication with the pump, and a controller communicatively coupled to the pump and the delivery mechanism. The controller is structured to interpret, via a pump diagnostic circuit, first and second pump parameters indicative of first and second pump rates, interpret, via a dosing diagnostic circuit, first and second dosing parameters indicative of at least one of (i) first and second reductant flows or (ii) first and second injector characteristics, determine, via a delivery diagnostic circuit, a delivery status based, at least in part, on the interpretation of the first and second pump parameters and the first and second dosing parameters, and generate, via the delivery diagnostic circuit, a status command indicative at least one of an under-restricted delivery mechanism or an over-restricted delivery mechanism in response to the determination of the delivery status. 1. A system comprising:a pump;a delivery mechanism in fluid communication with the pump; and interpret, via a pump diagnostic circuit, first and second pump parameters indicative of first and second pump rates;', 'interpret, via a dosing diagnostic circuit, first and second dosing parameters indicative of at least one of (i) first and second reductant flows or (ii) first and second injector characteristics;', 'determine, via a delivery diagnostic circuit, a delivery status based, at least in part, on the interpretation of the first and second pump parameters and the first and second dosing parameters; and', 'generate, via the delivery diagnostic circuit, a status command indicative at least one of an under-restricted delivery mechanism or an over-restricted delivery mechanism in response to the determination of the delivery status., 'a controller communicatively coupled to the pump and the delivery mechanism, the controller structured to2. The system of claim 1 , wherein the determination of the delivery status further comprises:determining ...

PRESSURE RELIEF SYSTEM FOR DIESEL EXHAUST FLUID FREEZE DAMAGE MITIGATION

A system for diesel exhaust fluid (DEF) pressure relief for a vehicle that includes a DEF pump assembly in an interior of a DEF storage tank is described. The system includes a DEF shear structure fixed to a top interior portion of the DEF storage tank. The DEF shear structure includes a plurality of expansion channels extending from the top interior portion of the DEF storage tank into stored DEF in the storage tank. When the DEF storage tank experiences a freeze event the plurality of expansion channels have smooth walls configured to guide a frozen DEF away from the DEF pump assembly. 1. A system for diesel exhaust fluid (DEF) pressure relief for a vehicle comprising:a DEF pump assembly in an interior of a DEF storage tank; and 'a plurality of expansion channels extending from the top portion of the DEF storage tank toward the DEF pump assembly, the plurality of expansion channels having smooth walls configured to guide displaced frozen DEF away from the DEF pump assembly.', 'a DEF shear structure fixed to a top portion of the DEF storage tank, wherein the DEF shear structure comprises2. The system of claim 1 , wherein the plurality of expansion channels are configured to relieve the DEF pressure on the DEF pump assembly by guiding the frozen DEF away from the DEF pump assembly in the plurality of expansion channels responsive to DEF pressure near the DEF pump assembly.3. The system of claim 2 , wherein the expansion channels are configured to relieve the DEF pressure on the DEF pump assembly when DEF pressure on the frozen DEF exceeds an ambient air pressure at an interior of the DEF storage tank.4. The system of claim 1 , wherein the DEF shear structure comprises a plurality of shear members configured in a rectangular array; andthe plurality of expansion channels are formed by intersections of the plurality of shear members.5. The system of claim 1 , wherein the DEF shear structure and the DEF storage tank are separate bodies claim 1 , and the DEF shear ...

LIQUID DELIVERY MODULE, A METHOD FOR ASSEMBLING SUCH A DELIVERY MODULE AND A TANK SET COMPRISING SUCH A DELIVERY MODULE

This delivery module includes: a pump for making the liquid flow; and an electronic circuit for controlling the pump. The delivery module further includes a channeling block having two channeling elements which define, when they are superimposed, channels for the liquid and which include: an inlet channel and an outlet channel. 1. A delivery module , for delivering a liquid from a tank toward a downstream conduit in a motor vehicle , the delivery module comprising at least:a pump configured to make the liquid flow from the tank toward the downstream conduit; andan electronic circuit connected to the pump and configured to control the pump;wherein the delivery module further comprises a channeling block, the channeling block comprising two channeling elements which are configured to define, when they are superimposed, at least two channels adapted for the circulation of the liquid, the channels including at least:i) an inlet channel configured to channel the liquid toward the pump, andii) an outlet channel configured to channel the liquid coming out from the pump.2. The delivery module according to claim 1 , wherein one of the channeling elements presents at least one cavity configured to define at least one of the channels claim 1 , and wherein another channeling element is configured to seal said cavity when the channeling elements are superimposed.3. The delivery module according to claim 1 , wherein each channeling element has generally the shape of a plate.4. The delivery module according to claim 1 , wherein at least one channeling element is formed by a flat gasket having at least one opening defining one of the channels claim 1 , the delivery module further comprising at least one retaining member configured to retain the flat gasket.5. The delivery module according to claim 1 , wherein at least one channeling element includes at least one protruding rim defining a closed contour.6. The delivery module according to claim 1 , further comprising at least one ...

LIQUID TRANSFER DEVICE AND A TANK ASSEMBLY COMPRISING SUCH A TRANSFER DEVICE

This transfer device includes at least one body defining at least partially a transfer conduit having a first orifice and a second orifice, and one heating member arranged at least partially in the body so as to heat the at least one transfer conduit. The first orifice and the second orifice are offset i) on the one hand, along a first direction, and ii) on the other hand, along a second direction, the second direction being perpendicular to the first direction. 116-. (canceled)17. A transfer device , for transferring a liquid between a tank and a supply module , the transfer device being intended to be placed in the tank and close to a bottom of the tank , the transfer device comprising at least:a body defining at least partially at least one transfer conduit, said at least one transfer conduit having a first orifice and a second orifice, anda heating member arranged at least partially in the body so as to heat said at least one transfer conduit;wherein the first orifice and the second orifice are offset i) on the one hand, along a first direction, and ii) on the other hand, along a second direction, the second direction being perpendicular to the first direction.18. The transfer device according to claim 17 , wherein the body and said at least one transfer conduit are arranged so that the first direction is substantially vertical when the transfer device is placed in the tank in service configuration.19. The transfer device according to claim 17 , wherein the heating member comprises a first heating portion and a second heating portion claim 17 , which are arranged so that the altitude of the first heating portion is lower than the altitude of the second heating portion when the transfer device is placed in the tank in service configuration claim 17 , the first heating portion extending transversely to the second heating portion.20. The transfer device according to claim 19 , wherein the first heating portion extends on either side of the first orifice claim 19 , ...

SYSTEM FOR WORKING MACHINE

An emissions abatement system for an engine system having an engine and an after-treatment system is provided. The emissions abatement system is configured for operation in an off-highway vehicle and comprises a controller arranged to: receive an input indicative of an intent to start the vehicle; upon receipt of said input, activate a heating component to raise an operating temperature of at least a portion of the after-treatment system; determine when the after-treatment system has reached a first heated condition; once the first heated condition has been reached, direct the engine to be started and direct the vehicle to operate in a first mode; determine when the after-treatment system has reached a second heated condition; and once the second heated condition has been reached, direct the vehicle to operate in a second mode. 1. An emissions abatement system for an engine system having an engine and an after-treatment system , the emissions abatement system being configured for operation in an off-highway vehicle and comprising a controller arranged to:receive an input indicative of an intent to start the vehicle,upon receipt of said input, activate a heating component to raise an operating temperature of at least a portion of the after-treatment system,determine when the after-treatment system has reached a first heated condition,once the first heated condition has been reached, direct the engine to be started and direct the vehicle to operate in a first mode;determine when the after-treatment system has reached a second heated condition, andonce the second heated condition has been reached, direct the vehicle to operate in a second mode.2. The emissions abatement system according to claim 1 , wherein in the first mode claim 1 , the vehicle is controlled to maintain the load on the engine below a predetermined load threshold.3. The emissions abatement system according to claim 2 , wherein claim 2 , in the second mode claim 2 , vehicle operations are not ...

AMMONIA STORAGE CAPACITY OF SCR CATALYST UNIT

The present disclosure describes methods for evaluating ammonia storage capacity of a close-coupled SCR unit while remaining compliant with prescribed emissions limits, methods of controlling an emission aftertreatment system including multiple SCR units and emission management systems for a vehicle including an internal combustion engine and an emission aftertreatment system that includes two or more SCR units. 1. A method of evaluating ammonia storage capacity of a selective catalytic reduction (SCR) unit in an emission aftertreatment system (EAS) , the method comprising:operating the EAS at steady state conditions;dosing diesel exhaust fluid, into exhaust gas from the internal combustion engine, upstream of a close-coupled SCR unit;flowing the exhaust gas, into which the diesel exhaust fluid has been dosed, through the close-coupled SCR unit;flowing the exhaust gas from the close-coupled SCR unit through a downstream SCR unit;controlling NOx emissions from the EAS using the downstream SCR unit;terminating the dosing of diesel exhaust fluid into the flowing exhaust gas upstream of the close-coupled SCR unit;depleting ammonia stored in the close-coupled SCR unit;restarting the dosing of diesel exhaust fluid into the flowing exhaust gas upstream of the close-coupled SCR unit;reloading the close-coupled SCR unit with ammonia;determining the close-coupled SCR unit has reached a maximum ammonia loading; andupon determining the close-coupled SCR unit has reached the threshold ammonia loading, determine (1) an amount of ammonia loaded in the close-coupled SCR unit after restarting dosing of diesel exhaust fluid into the flowing exhaust gas upstream of the close-coupled SCR unit, (2) an amount of ammonia used for NOx conversion in the close-coupled SCR unit after restarting dosing of diesel exhaust fluid into the flowing exhaust gas close-coupled of the close-coupled SCR unit and (3) an amount of ammonia oxidized in the SCR unit after restarting dosing of diesel exhaust ...

METHODS FOR EVALUATING DIESEL EXHAUST FLUID QUALITY

The present disclosure describes methods for evaluating quality of DEF dosed to an EAS including a close coupled SCR unit a downstream SCR unit. A NOx conversion efficiency of the close coupled SCR unit and a NOx conversion efficiency of the downstream SCR unit are used to evaluate quality of DEF. In some embodiments, the NOx conversion efficiency of close coupled SCR unit is used to evaluate quality of DEF. Operation of an EAS using the results of the evaluation of quality of DEF are described. 1. A method of evaluating DEF quality in an emissions aftertreatment system (EAS) including a close coupled selective catalytic reduction (SCR) unit and a downstream SCR unit , the method comprising:determining a NOx conversion efficiency of the close coupled SCR unit;comparing the determined NOx conversion efficiency of the close coupled SCR unit to a target NOx conversion efficiency for the close-coupled SCR unit;determining an NOx conversion efficiency of the downstream SCR unit;comparing the determined NOx conversion efficiency of the downstream SCR unit to a target NOx conversion efficiency for the downstream SCR unit; andusing a result of the comparing the determined NOx conversion efficiency of the close coupled SCR unit and a result of the comparing the determined NOx conversion efficiency of the downstream SCR unit to evaluate quality of diesel exhaust fluid (DEF) provided to the EAS.2. The method of claim 1 , further comprising initiating the determining NOx conversion efficiency of the close coupled SCR unit or the determining NOx conversion efficiency of the downstream SCR unit after an amount of DEF in a DEF tank of the EAS has changed more than 20 percent.3. The method of claim 1 , wherein the target NOx conversion efficiency of the close coupled SCR unit is obtained from a lookup table.4. The method of claim 3 , wherein the lookup table includes target NOx conversion efficiency values for the close coupled SCR unit as a function of age of a close coupled SCR ...

NOX SENSOR DIAGNOSTICS IN HEAVY-DUTY MOTOR VEHICLE ENGINES

A heavy-duty truck has a diesel engine, an exhaust after-treatment system, and an engine control unit. The exhaust after-treatment system includes a close-coupled selective catalytic reduction system and an underbody selective catalytic reduction system, a first NOsensor upstream of the close-coupled selective catalytic reduction system, a second NOsensor between the two selective catalytic reduction systems, and a third NOsensor downstream of the underbody selective catalytic reduction system. The engine control unit may perform methods allowing intrusive diagnostics to be performed on exhaust gas NOsensors using the selective catalytic reduction systems during normal operation of the heavy-duty truck. 1. A method , comprising:operating a diesel engine of a heavy-duty truck such that the diesel engine generates an exhaust gas flow and the exhaust gas flow flows into an exhaust after-treatment system of the heavy-duty truck, the exhaust after-treatment system including a close-coupled selective catalytic reduction system and an underbody selective catalytic reduction system downstream of the close-coupled selective catalytic reduction system with respect to the exhaust gas flow;controlling a DEF injector upstream of the close-coupled selective catalytic reduction system to increase a rate at which the DEF injector injects DEF into the exhaust gas flow;{'sub': x', 'x', 'x', 'x, 'measuring a first level of NOgases with a first NOsensor upstream of the close-coupled selective catalytic reduction system and a second level of NOgases with a second NOsensor downstream of the close-coupled selective catalytic reduction system as the rate at which the DEF injector injects DEF increases; and'}{'sub': 'x', 'using the measurements to determine a level of error in measurements provided by the first NOsensor.'}2. The method of claim 1 , further comprising controlling NOtailpipe emissions using the underbody selective catalytic reduction system.3. The method of claim 1 , further ...

AFTERTREATMENT SYSTEM WITH MULTIPLE DOSING MODULES

An aftertreatment system () includes a decomposition chamber (), a reductant pump (), a first dosing module (), a second dosing module (), and a controller (). The first dosing module () is coupled to the decomposition chamber () and configured to receive reductant from the reductant pump (). The second dosing module () is coupled to the decomposition chamber () and configured to receive reductant from the reductant pump () independent of the first dosing module (). The controller () is communicatively coupled to the first dosing module () and the second dosing module (). The controller () is configured to independently control a first volumetric flow rate of reductant provided from the first dosing module () into the decomposition chamber () and a second volumetric flow rate of reductant provided from the second dosing module () into the decomposition chamber (). 1. An aftertreatment system comprising:a decomposition chamber;a reductant pump;a first dosing module coupled to the decomposition chamber and configured to receive reductant from the reductant pump;a second dosing module coupled to the decomposition chamber and configured to receive reductant from the reductant pump independent of the first dosing module; anda controller communicatively coupled to the first dosing module and the second dosing module, the controller configured to independently control a first volumetric flow rate of reductant provided from the first dosing module into the decomposition chamber and a second volumetric flow rate of reductant provided from the second dosing module into the decomposition chamber.2. The aftertreatment system of claim 1 , wherein the first volumetric flow rate of reductant and the second volumetric flow rate of reductant are selected by the controller based upon a diameter of the decomposition chamber.3. The aftertreatment system of claim 1 , wherein:the first dosing module is coupled to the decomposition chamber such that reductant provided from the first ...

SYSTEMS AND METHODS FOR PURGING REDUCTANT FROM A REDUCTANT INJECTOR

A reductant insertion system for inserting reductant into an aftertreatment system via a reductant injector comprises a reductant insertion assembly comprising a pump operatively coupled to the reductant injector via a reductant delivery line. A compressed gas source is operatively coupled to the reductant injector and provides a compressed gas to the reductant injector for gas assisted delivery of the reductant. A controller is operatively coupled to the compressed gas source and the reductant insertion assembly and configured to determine whether there is a reductant demand for the reductant. In response to there being no reductant demand, the controller stops the pump and activates the compressed gas source for a predetermined time so as to provide compressed gas to the reductant injector at a pressure sufficient to force reductant contained in the reductant injector upstream towards the reductant insertion assembly via the reductant delivery line while the pump is stopped. 1. A reductant insertion system for inserting reductant into an aftertreatment system via a reductant injector , the reductant insertion system comprising:a reductant insertion assembly comprising a pump operatively coupled to the reductant injector via a reductant delivery line and configured to pump the reductant to the reductant injector;a compressed gas source operatively coupled to the reductant injector and configured to provide a compressed gas to the reductant injector for gas assisted delivery of the reductant through the reductant injector; and determine whether there is a reductant demand for the reductant,', 'in response to determining that there is no reductant demand, stop the pump, and', 'activate the compressed gas source for a predetermined time so as to provide the compressed gas to the reductant injector, at a pressure sufficient to force reductant contained in the reductant injector upstream towards the reductant insertion assembly via the reductant delivery line while the ...

Method for extracting a liquid additive from a tank

A method for extracting a liquid additive from an interior space of a tank at an extraction point includes: filtering the liquid additive by at least one filter that covers the extraction point and that is configured to separate the extraction point from the interior space of the tank and through which the liquid additive flows, wherein contaminants of the liquid additive are deposited on a surface of the filter, and extracting the liquid additive from the tank at the extraction point; forming at least one porous filter cake from contaminants of the liquid additive on the surface of the filter; and filtering the liquid additive by the at least one porous filter cake, wherein contaminants of the liquid additive are deposited in the filter cake, and extracting the liquid additive from the tank at the extraction point.

APPARATUS, METHOD, AND SYSTEM FOR DIAGNOSING REDUCTANT DELIVERY PERFORMANCE

A system for diagnosing and/or determining the performance of a reductant delivery system may include determining a flow rate offset value for the reductant delivery system. A reduced reductant flow rate may be determined for a reductant dosing command value based, at least in part, on the determined flow rate offset when reductant dosing command is non-zero. A reductant flow rate error can be determined based, at least in part, on a difference between an expected reductant flow rate value corresponding to the reductant dosing command value and the determined reduced reductant flow rate. A performance status value indicative of a performance status of the reductant delivery system may be outputted based, at least in part, on the determined first reductant flow rate error and a predetermined threshold. 1. A system , comprising:a reductant delivery system comprising a reductant pump; and determine a flow rate offset value for the reductant delivery system, the flow rate offset value based on a first pump command value for the reductant pump when an output pressure value is stabilized and a first reductant dosing command value is zero,', 'determine a first reduced reductant flow rate for a second reductant dosing command value based, at least in part, on the determined flow rate offset, the second reductant dosing command being non-zero,', 'determine a first reductant flow rate error based, at least in part, on a difference between a reductant flow rate value corresponding to the second reductant dosing command value and the first determined reduced reductant flow rate, and', 'output a performance status value indicative of a performance status of the reductant delivery system based, at least in part, on the determined first reductant flow rate error and a predetermined threshold., 'a controller configured to2. The system of claim 1 , wherein the reductant delivery system further comprises a control valve claim 1 , and wherein the controller is further configured to: ...

Device for delivering a liquid additive

A device for delivering a liquid additive includes: a tank configured to store the liquid additive; a pump; a suction point at which the liquid additive can be sucked out of the tank by the pump; and a filter at least partially delimiting an intermediate space between the filter and the suction point and separating the intermediate space from an interior space of the tank. The filter has a filter surface with a top edge and a bottom edge, the top edge and the bottom edge being spaced apart from one another in a vertical direction by 30 mm to 80 mm and the suction point being positioned at most 5 mm below the top edge in the vertical direction. 19-. (canceled)10138. A device () for delivering a liquid additive () , comprising:{'b': 2', '38, 'a tank () configured to store the liquid additive ();'}{'b': '4', 'a pump ();'}{'b': 3', '38', '2', '4, 'a suction point () at which the liquid additive () can be sucked out of the tank () by the pump (); and'}{'b': 5', '6', '5', '3', '6', '7', '2, 'a filter () at least partially delimiting an intermediate space () between the filter () and the suction point () and separating the intermediate space () from an interior space () of the tank (),'}{'b': 5', '8', '9', '10', '9', '10', '11', '3', '9', '11, 'wherein the filter () has a filter surface () with a top edge () and a bottom edge (), wherein the top edge () and the bottom edge () are spaced apart from one another in a vertical direction () by 30 mm to 80 mm and the suction point () is positioned at most 5 mm below the top edge () in the vertical direction ().'}11151271314. The device () according to claim 10 , wherein the filter () has: an outer surface () oriented towards the interior space () claim 10 , and inlet openings () with a hydraulic diameter () of between 100 μιη and 260 μιη.121171312515161665. The device () according to claim 11 , further comprising ducts () extending from the inlet openings () on the outer surface () of the filter () to outlet openings () on an ...

EXHAUST TREATMENT APPARATUS AND METHOD

The present invention relates to an exhaust treatment apparatus () for an internal combustion engine (). The apparatus includes a catalyst chamber () containing a catalyst (). One or more exhaust gas inlets (A-D) are provided for supplying exhaust gases from the internal combustion engine () to the catalyst chamber (C). An exhaust gas outlet () for supplying exhaust gases from the catalyst chamber to a turbocharger (). An injection nozzle () is provided for introducing a reductant () into the exhaust gases between the catalyst () and the turbocharger (). The reductant () and the exhaust gases can undergo mixing as they pass through the turbocharger (). The catalyst () can have a three-dimensional open structure to facilitate the flow of exhaust gases. The invention also relates to a method of treating exhaust gases from an internal combustion engine (). 1. An exhaust treatment apparatus for an internal combustion engine , the apparatus comprising:a manifold chamber defined by an exhaust manifold and containing a catalyst;a plurality of exhaust gas inlets for supplying exhaust gases from the internal combustion engine to the manifold chamber;an exhaust gas outlet for supplying exhaust gases from the manifold chamber to a turbocharger; anda plurality of recesses, each of said recesses comprising an aperture extending partway through the catalyst substantially coincident with one of said exhaust gas inlets;wherein the catalyst has a three-dimensional open structure for facilitating a flow of exhaust gases from the exhaust gas inlets to the exhaust gas outlet.2. The exhaust treatment apparatus of claim 1 , wherein the three-dimensional open structure of the catalyst comprises one of the following: an open cell structure claim 1 , a porous structure claim 1 , a granular structure claim 1 , or a lattice structure.3. The exhaust treatment apparatus of claim 1 , further comprising an injection nozzle for introducing a reductant into the exhaust gases between the catalyst ...

ASYNCHRONOUS REDUCTANT INSERTION IN AFTERTREATMENT SYSTEMS

An aftertreatment system comprises a first SCR system, a second SCR system positioned downstream of the SCR system and a reductant storage tank. At least one reductant insertion assembly is fluidly coupled to the reductant storage tank. The at least one reductant insertion assembly is also fluidly coupled to the first SCR system and the SCR system. A controller is communicatively coupled to the reductant insertion assembly. The controller is configured to instruct the reductant insertion assembly to asynchronously insert the reductant into the first SCR system and the second SCR system. 1. A system for asynchronously delivering reductant from a reductant storage tank to a first selective catalytic reduction system and a second selective catalytic reduction system included in an aftertreatment system , comprising:a reductant insertion assembly fluidly coupled to the reductant storage tank, the reductant insertion assembly configured to be fluidly coupled to each of the first selective catalytic reduction system and the second selective catalytic reduction system; and 'instruct the reductant insertion assembly to asynchronously insert the reductant into the first selective catalytic reduction system and the second selective catalytic reduction system.', 'a controller configured to, 'a control module communicatively coupled to the reductant insertion assembly, the control module comprising2. The system of claim 1 , wherein the asynchronously inserting includes inserting the reductant only into the first selective catalytic reduction system or only into the second selective catalytic reduction system at any given time.3. The system of claim 1 , wherein the reductant insertion assembly includes:a first injector fluidly coupled to the first selective catalytic reduction system; anda second injector fluidly coupled to the second selective catalytic reduction system.4. The system of claim 3 , wherein the controller is further configured to:activate the first injector; ...

Exhaust Gas Flowhood With Treatment Fluid Injector And Variable Mounting Angle

A flowhood assembly comprises an injector which is fixable to a mount in a number of alternative mounted positions defined by rotation of the injector about an injection axis X relative to the mount, The injector includes one or more coolant ports which are connected in use to a supply of liquid coolant C. The mount is fixable to a flowhood in an upright, design orientation and in alternative connected positions defined by rotation of the flowhood relative to the mount about a connection axis X In a normal use position of the assembly the connection axis X of the flowhood is arranged at a predefined angle, optionally 0°, relative to a nominal horizontal plane P The injector is not fixable to the mount other than in the alternative mounted positions. In use in the normal use position, and in each of the alternative mounted positions of the injector, the injection axis X of the injector is oriented downwardly away from the injector relative to the horizontal plane P and at least one of the coolant ports is arranged above the horizontal plane P which passes through the injection axis X at an outlet end of the nozzle. 1. A flowhood assembly for treatment of an exhaust gas with a treatment fluid , the assembly including:a flowhood,an injector, anda mount for mounting the injector on the flowhood;the flowhood including;an exhaust flowpath, anda connection portion opening into the exhaust flowpath, the connection portion defining a connection axis;the injector including:a nozzle, the nozzle having an outlet end and defining an injection axis of the injector,a treatment fluid port connectable to a supply of treatment fluid to conduct the treatment fluid to the nozzle, andone or more coolant ports connectable to a supply of liquid coolant for cooling the injector in use;the injector being arranged in use to inject the treatment fluid from the outlet end of the nozzle along the injection axis into the exhaust flowpath;the flowhood having a normal use position defined by a ...

Integrated Base Filter for a DEF Manifold

A base filter for a diesel exhaust fluid (DEF) filter of a header assembly in a fluid reservoir is disclosed may include first and second semi-cylindrical holder portions having a semi-cylindrical walls concluding at abutment surfaces that face and engage when the base filter is assembled. The semi-cylindrical holder portions have one or more mounting tabs extending inward from inner surfaces of the semi-cylindrical walls. The header assembly may include a header with a cylindrical header boss having mounting recess defined therein. The mounting tabs may be circumferentially spaced about the semi-cylindrical walls to align with and be inserted into the mounting recesses of the header boss the base filter is assembled on the cylindrical header boss. Fasteners may be inserted through fastener bosses of the semi-cylindrical holder portions and into fastener bores of the header boss to hold the semi-cylindrical holder portions together and on the header. 1. A base filter for a diesel exhaust fluid (DEF) filter of a header assembly in a fluid reservoir , wherein the header assembly includes a header having a cylindrical header boss with a boss outer surface having a first mounting recess , a second mounting recess , a third mounting recess and a fourth mounting recess defined therein , the base filter comprising:a first semi-cylindrical holder portion having a first semi-cylindrical wall with a first upper edge surface, the first semi-cylindrical wall concluding at a first abutment surface and a second abutment surface, wherein the first semi-cylindrical holder portion has a first mounting tab and a second mounting tab extending inward from an inner surface of the first semi-cylindrical wall proximate the first upper edge surface; anda second semi-cylindrical holder portion having a second semi-cylindrical wall with a second upper edge surface, the second semi-cylindrical wall concluding in a third abutment surface and a fourth abutment surface, wherein the second semi- ...

Reductant delivery conduit for a reductant storage tank

An apparatus comprises a reductant storage tank configured to store a reductant, and a reductant delivery conduit. A first end of the reductant delivery conduit is fluidly coupled to the reductant storage tank. A second end of the reductant delivery conduit opposite the first end is configured to be fluidly coupled to a connector of a reductant insertion assembly. At least one bend having a bend angle is provided in the reductant delivery conduit along a length thereof, the at least one bend being configured to inhibit failure at an interface between the second end of the reductant delivery conduit and the connector of the reductant insertion assembly due to freezing of a reductant in the reductant delivery conduit.

VALVE ASSEMBLY FOR VEHICLE EXHAUST SYSTEM

A valve assembly for a vehicle exhaust system includes an exhaust component body defining an exhaust gas flow path and a flap mounted to pivot in the exhaust gas flow path between a minimum flow position and a maximum flow position. At least one bushing supports the flap for rotational movement relative to the exhaust component body about an axis. In one example, a damper is positioned radially between the bushing and the flap and defines an inner diameter that is smaller than an outer diameter of the bushing. In another example, a damper is attached to the flap such that a distal edge is free from attachment to a distal edge of the flap such that as the flap returns to the minimum flow position the damper first contacts the exhaust component body and then the flap contacts the damper. 1. A valve assembly for a vehicle exhaust system comprising:an exhaust component body defining an exhaust gas flow path;a flap mounted to pivot in the exhaust gas flow path between a minimum flow position and a maximum flow position;at least one bushing to support the flap for rotational movement relative to the exhaust component body about an axis; andat least one damper positioned radially between the bushing and the flap, and wherein the at least one damper defines an inner diameter that is smaller than an outer diameter of the at least one bushing.2. The valve assembly according to wherein the flap includes a mounting boss that provides an internal recess that receives the at least one bushing claim 1 , and wherein the damper is positioned within the internal recess to surround the at least one bushing.3. The valve assembly according to wherein the damper comprises a low density wire mesh material.4. The valve assembly according to wherein the at least one bushing includes a mount structure that is fixed to the exhaust component body such that the flap pivots about the axis defined by the bushing.5. The valve assembly according to wherein the at least one damper comprises at least ...

Integrative reductant system and method using constant volume injection

Various embodiments relate to a selective catalytic reduction system for treating exhaust gases of an internal combustion engine. The system includes an inlet section that receives exhaust gases from the engine. The system includes a tank storing diesel exhaust fluid (“DEF”), a pump, a valve, and an injector each in fluid communication with each other. The injector is coupled to the inlet exhaust pipe and configured to inject DEF into the exhaust gases flowing through the inlet exhaust pipe in a plurality of pulses. Each of the plurality of pulses injects a constant volume of DEF into the inlet exhaust pipe. The system further includes a controller configured to operate the pump and the valve such that a time interval between successive constant volume pulses of the plurality of pulses is varied based on a variable oxides of nitrogen content of the exhaust gases.

Delivery unit for a liquid additive with a temperature sensor, method for checking the operating state of a delivery unit and motor vehicle having a delivery unit

A delivery unit for delivering a liquid additive in a motor vehicle, includes at least one temperature sensor for contactlessly measuring a temperature at least at one measurement point in the delivery unit. The temperature sensor and the measurement point have a spacing therebetween and a radiation channel which is free from fixtures is provided between the temperature sensor and the measurement point. A method for checking the operating state of a delivery unit and a motor vehicle having a delivery unit are also provided.

COOLING DEVICE FOR REDUCING AGENT INJECTION MODULE AND SELECTIVE CATALYTIC REDUCTION SYSTEM HAVING THE SAME

A cooling device for a reducing agent injection module includes a coolant circulation line connected to a module cooling channel for cooling the reducing agent injection module and configured that a coolant circulates therethrough, a closed circuit circulation line respectively connected to a first portion of the coolant circulation line in front of the module cooling channel and to a second portion of the coolant circulation line in rear of the module cooling channel and configured that a portion of the coolant circulation line is selectively used to form a closed circuit, and at least one heat dissipating part provided in the closed circuit to dissipate heat which is transported from the module cooling channel by natural convection of the coolant within the closed circuit. 1. A cooling device for a reducing agent injection module , the cooling device comprising:a coolant circulation line connected to a module cooling channel for cooling the reducing agent injection module and configured that a coolant circulates therethrough;a closed circuit circulation line respectively connected to a first portion of the coolant circulation line in upstream of the module cooling channel and to a second portion of the coolant circulation line in downstream of the module cooling channel and configured that a portion of the coolant circulation line is selectively used to form a closed circuit; andat least one heat dissipating part provided in the closed circuit to dissipate heat which is transported from the module cooling channel by natural convection of the coolant within the closed circuit.2. The cooling device of claim 1 , further comprising a closed circuit control valve provided in the closed circuit circulation line and configured to control a flow direction of the coolant.3. The cooling device of claim 2 , wherein the reducing agent injection module is installed at a position lower than the heat dissipating part in a vertical direction such that the coolant undergoes ...

Pump For Conveying A Liquid, In Particular An Exhaust-Gas Cleaning Additive

A pump for conveying liquid includes a pump housing having an inlet, an outlet, an inner circumferential surface and a geometric axis. An eccentric in the housing is rotatable about the geometric axis relative to the housing. A deformable element is disposed between the inner circumferential housing surface and the eccentric. A delivery duct from the inlet to the outlet is formed by the deformable element and the inner circumferential housing surface. The deformable element is pressed against the housing by the eccentric in sections so that a displaceable seal of the duct and a closed pump volume in the duct are formed and are displaceable to convey the liquid along the duct from the inlet to the outlet by rotation of the eccentric. A receptacle, accommodating an edge region of the deformable element, is formed by the inner circumferential housing surface and a counter bracket. 110-. (canceled)11. A pump for delivering a liquid , the pump comprising:at least one pump housing having at least one inlet, at least one outlet, an inner circumferential surface and a geometric axis;an eccentric disposed within said at least one pump housing and rotatable relative to said at least one pump housing about said geometric axis;a deformable element disposed between said inner circumferential surface of said at least one pump housing and said eccentric, said deformable element having at least one edge region;a delivery duct formed from said at least one inlet to said at least one outlet by said deformable element and said inner circumferential surface of said at least one pump housing;said eccentric pressing said deformable element in sections against said at least one pump housing to form at least one displaceable seal of said delivery duct and at least one closed pump volume in said delivery duct;said at least one displaceable seal and said at least one closed pump volume being displaceable along said delivery duct from said at least one inlet to said at least one outlet by a ...

Reducing agent injection device, exhaust gas treatment device and exhaust gas treatment method

A reducing agent injection device includes a honeycomb structure having a honeycomb structure body and a pair of electrode members arranged in a side surface of the honeycomb structure body and a urea spraying device spraying a urea water solution in mist form. The urea water solution sprayed from the urea spraying device is supplied inside cells from a first end face of the honeycomb structure body, and urea in the urea water solution supplied in the cells is heated and hydrolyzed inside the electrically heated honeycomb structure body to generate ammonia. The ammonia is discharged outside the honeycomb structure body from a second end face and injected outside. There is provided a reducing agent injection device that can generate and inject ammonia from a urea solution with less energy.

Filtering method for intermittent ultrasonic level sensors

Methods are provided for determining an exhaust fluid level in an exhaust fluid storage tank based on a signal, and a quality of the signal from an exhaust fluid level sensor located in the exhaust fluid tank of a vehicle.

Device for Injecting a Liquid into an Exhaust Gas Flow and Exhaust Gas Aftertreatment System

A device for injecting a liquid, particularly an aqueous urea solution, into an exhaust gas flow has at least one atomizing nozzle which is designed as a two-component nozzle and by means of which the liquid is injected into the exhaust gas flow by means of pressurized air such that the liquid can be mixed with the pressurized air first directly upon exiting, or after exiting, the respective atomizing nozzle outside of the atomizing nozzle. The atomizing nozzle, or each atomizing nozzle, has a nozzle base body, a nozzle air cap and a nozzle insert which are formed as turning parts. The respective atomizing nozzle can be connected to a nozzle lance via the nozzle base body, and the nozzle air cap and the nozzle insert are received and held in the nozzle base body.

Pouch assembly for holding an aqueous urea solution for use in an SCR system for treating the exhaust gases of an internal combustion engine of a vehicle and system for treating the exhaust gases of an internal combustion engine of a vehicle using the aqueous urea solution

The application relates to a pouch assembly () containing a liquid being an aqueous urea solution for use in a selective catalytic reduction system for treating the exhaust gases of an internal combustion engine of a vehicle and for transferring the liquid to a liquid tank of the vehicle from the outside of the liquid tank, the pouch assembly () comprising a flexible pouch () and a spout () attached thereto having a base () extending axially through an opening () provided in a wall of the pouch () and being attached to the opening (), a top end () being configured for insertion in the inside passage of the filling neck () of the liquid tank during the filling of the liquid tank, and a body () that extends between the base () and the top end () of the spout (), the body () having an elongated shape, and the body () at least partially extending in the inside passage of the filling neck () of the liquid tank during the filling of the liquid tank, the base (), the top end () and the body () having an elongated axial through-passage () to serve as a discharge passage for the liquid. The application relates furthermore to a system comprising such a pouch assembly () and a liquid tank having a filling neck () allowing insertion of the spout () for filling the liquid tank. 21002. The pouch assembly () according to claim 1 , wherein the spout () is formed of one piece.3100212111111. The pouch assembly () according to claim 1 , wherein the base () of the spout () is permanently attached to the opening () provided in the wall () of the flexible pouch ().410021. The pouch assembly () according to claim 1 , wherein a longitudinal central axis (X) of the spout () is disposed in an upward direction when the flexible pouch () is considered in an upright position.510023223221223323223232233. The pouch assembly () according to claim 1 , wherein the body () of the spout () has a lower end () that is connected to the base () of the spout () and a upper end () that is connected to the ...

EXHAUST SYSTEM INCLUDING SCRF CATALYST WITH OXIDATION ZONE

Systems and methods of the present invention related to an exhaust gas purification system comprising: (a) a first injector for injecting ammonia or a compound decomposable to ammonia into the exhaust gas; (b) a diesel particulate filter including an inlet and an outlet, wherein the filter includes a selective catalyst reduction (SCR) catalyst and an oxidation catalyst; (c) a second injector for injecting ammonia or a compound decomposable to ammonia into the exhaust gas, located downstream of the filter; and (d) a downstream catalyst comprising a selective catalytic reduction catalyst, located downstream of the second injector. 1. An exhaust gas purification system comprising:a. a first injector for injecting ammonia or a compound decomposable to ammonia into the exhaust gas;b. a diesel particulate filter including an inlet and an outlet, wherein the filter includes a selective catalyst reduction (SCR) catalyst and an oxidation catalyst;c. a second injector for injecting ammonia or a compound decomposable to ammonia into the exhaust gas, located downstream of the filter; andd. a downstream catalyst comprising a selective catalytic reduction catalyst, located downstream of the second injector.2. The exhaust gas purification system of claim 1 , wherein the oxidation catalyst is coated on the outlet of the filter.3. The exhaust gas purification system of claim 1 , wherein the oxidation catalyst comprises one or more platinum group metals.4. The exhaust gas purification system of claim 1 , wherein the oxidation catalyst comprises platinum claim 1 , palladium claim 1 , or combinations thereof.5. The exhaust gas purification system of claim 1 , wherein the selective catalytic reduction catalyst comprises a metal oxide based SCR catalyst formulation claim 1 , a molecular sieve based SCR catalyst formulation claim 1 , or mixtures thereof.6. The exhaust gas purification system of claim 1 , wherein the downstream catalyst further comprises an ammonia oxidation catalyst.7. ...

Automated Diesel Exhaust Fluid (DEF) System and Method

An automated diesel exhaust fluid (DEF) system and method for refilling DEF. The automated DEF system provides DEF refilling after an initial setup and without manual intervention. The automated DEF system includes a electric DEF flow control device that controls the flow of DEF. The electric DEF flow control device may include control circuitry, an electrics enclosure that encloses the control circuity, an electric fluid sensor, a valve, a beacon light, a status light, a button, a threaded swivel connection, and a mandrel on the inside of the threaded swivel connection. 1. A diesel exhaust fluid (DEF) refilling system , comprising:a supply tank comprising DEF;a supply line connecting the supply tank to a DEF tank configured to supply DEF to a diesel engine; an enclosure containing control circuity;', 'a valve having an inlet and an outlet and moveable between an open position and a closed position, the open position configured to permit DEF flow through the valve and the closed position configured to block DEF flow through the valve, the valve outlet in fluid communication with the DEF tank;', 'a valve actuator operable to move the valve between the open position and the closed position;', 'an electric fluid sensor disposed in a sensor housing and comprising a shaft extending into the DEF tank, the shaft comprising a slot such that the electric fluid sensor senses DEF when the slot is submerged; and', 'a battery configured to power the control circuity, the valve actuator, and the electric fluid sensor,', 'wherein the control circuity comprises logic configured to move the valve between the open position and the closed position in response to a signal provided by the electric fluid sensor., 'a DEF flow control device in fluid communication with the supply line, the DEF flow control device comprising2. The system of claim 1 , comprising a feeder line claim 1 , the feeder line further connecting the supply line to the DEF tank.3. The system of claim 1 , wherein the ...

EXHAUST GAS SYSTEM

An exhaust system for the aftertreatment of exhaust gases of an internal combustion engine, having an annular catalytic converter which is flowed through by exhaust gas, wherein the annular catalytic converter has an inflow point and an outflow point and the annular catalytic converter has a tubular first flow path and an annular second flow path which are oriented concentrically with respect to one another and which are flowed through in series, wherein the first flow path is surrounded to the outside in a radial direction by the second flow path, wherein a pipe is led in the radial direction from the outside through the second flow path, wherein the pipe opens into the annular catalytic converter and the pipe has a radial extent at least as far as into the inner first flow path. 1. An exhaust system for the aftertreatment of exhaust gases of an internal combustion engine , comprising:an annular catalytic converter which is flowed through by exhaust gas;an inflow point being part of the annular catalytic converter;an outflow point being part of the annular catalytic converter;a tubular first flow path being part of the annular catalytic converter;an annular second flow path being part of the annular catalytic converter, the tubular first flow path and the annular second flow path are oriented concentrically with respect to one another and which are flowed through in series; anda pipe led in the radial direction from the outside through the second flow path, the pipe opens into the annular catalytic converter and the pipe has a radial extent at least as far as into the inner first flow path;wherein the first flow path is surrounded to the outside in a radial direction by the second flow path.2. The exhaust system of claim 1 , wherein the exhaust gas claim 1 , at a first axial end region of the annular catalytic converter claim 1 , is caused to flow into the radially inner claim 1 , first flow path through the inflow point and is caused to flow into the radially ...

UREA CONCENTRATION SENSOR REFLECTOR

A urea concentration sensor reflector system includes a urea concentration sensor reflector assembly including a reflector having an upwardly convex dome shape integrally connected to and supported by multiple legs. The reflector includes a concave-shaped inner surface. The multiple legs are connected to and support the urea concentration sensor reflector assembly to an upward directed surface of a bottom tank wall of a urea storage tank. A sound wave generator and receiver is fixed to the bottom tank wall directly below and centrally aligned with the reflector. The sound wave generator and receiver generates ultrasonic sound waves directed upwardly toward the reflector. A concentration of a liquid urea in the urea storage tank is determined based on a time for the ultrasonic sound waves to travel to the reflector and return as echo signals to the sound wave generator and receiver, and a temperature of the liquid urea. 1. A urea concentration sensor reflector assembly , comprising:a reflector having a dome shape integrally connected to and supported by multiple legs, the reflector including a concave-shaped inner surface;the multiple legs connected to and supporting the urea concentration sensor assembly to an upward directed surface of a urea storage tank bottom tank wall; anda sound wave generator and receiver fixed to the bottom tank wall directly below and centrally aligned with the reflector, the sound wave generator and receiver generating ultrasonic sound waves directed upwardly toward the reflector.2. The urea concentration sensor reflector assembly of claim 1 , wherein the multiple legs include a first leg claim 1 , a second leg claim 1 , a third leg and a fourth leg claim 1 , each equidistantly spaced apart from a successive one of the legs.3. The urea concentration sensor reflector assembly of claim 1 , wherein a quantity of the multiple legs is one of three legs or more than four legs claim 1 , each angularly oriented with respect to the bottom tank wall ...

EXHAUST GAS POST-TREATMENT APPARATUS

An exhaust gas post-treatment apparatus comprises a first mixing chamber assembly and a second mixing chamber assembly. The first mixing chamber assembly comprises a first housing provided with a first mixing chamber, a gas inlet pipe, a first mixing pipe at least partially located in the first mixing chamber and a perforated pipe located in the first mixing pipe. The first mixing pipe includes a first pipe body located in the first mixing chamber and a second pipe body extending from the first mixing chamber, wherein a side wall of the first pipe body is provided with apertures and flow plates located in the first mixing chamber. In the axial direction of the perforated pipe, the perforated area of the perforated pipe fully covers the length of the flow plates. The second mixing chamber assembly includes a flow-guiding hood. 1. An exhaust gas post-treatment apparatus , comprising a first mixing chamber assembly and a second mixing chamber assembly located downstream of the first mixing chamber assembly , the first mixing chamber assembly comprising a first housing including a first mixing chamber , a gas intake pipe in communication with the first mixing chamber , a first mixing pipe at least partially located in the first mixing chamber , and a multi-holed pipe located in the first mixing pipe; the first mixing pipe including a first pipe body located in the first mixing chamber and a second pipe body extending out of the first mixing chamber , wherein a sidewall of the first pipe body is provided with a number of apertures and associated rotational flow plates located in the first mixing chamber wherein , in an axial direction of the multi-holed pipe , an opening region of the multi-hole pipe completely covers a length of the rotational flow plates , the second mixing chamber assembly comprising a second housing and a second mixing pipe located in the second housing; the second mixing pipe including a flow-guiding hood in receipt of a gas flow exiting the first ...

UREA TANK FOR SCR AFTERTREATMENT SYSTEM, AND TANK COVER THEREOF

A urea tank for an SCR aftertreatment system, and a tank cover thereof. The tank cover is mounted at a liquid injection port of a tank body of the urea tank. An air hole is provided in a portion of the tank cover corresponding to the liquid injection port. The air hole is covered by a water-blocking air-permeable film (). A gas inlet hole and a gas discharge hole () are further provided in the portion of the tank cover corresponding to the liquid injection port. A first constant pressure check valve () and a second constant pressure check valve () are mounted on the tank cover. An inlet of the first constant pressure check valve () is connected to the gas discharge hole (). An outlet of the first constant pressure check valve () communicates with the exterior of the tank body. An inlet of the second constant pressure check valve () is connected to the gas inlet hole. An outlet of the second constant pressure check valve () communicates with the interior of the tank body. 1. A tank cover of a urea tank for SCR aftertreatment system , wherein the tank cover is mounted at a liquid injection port of a urea tank body of the urea tank , a ventilation hole is provided at a part of the tank cover corresponding to the liquid injection port , the ventilation hole is covered by a water-impermeable and air-permeable membrane ,an air inlet hole and an air outlet hole are provided at the part of the tank cover corresponding to the liquid injection port, a first constant pressure check valve and a second constant pressure check valve are mounted on the tank cover,an inlet of the first constant pressure check valve is butted with the air outlet hole, and an outlet of the first constant pressure check valve is in communication with outside of the tank body,an inlet of the second constant pressure check valve is butted with the air inlet hole, and an outlet of the second constant pressure check valve is in communication with inside of the tank body.2. The tank cover according to ...

Decomposition system on board of a vehicle and the use thereof

The system for use in a vehicle, comprises a decomposition unit ( 20 ) for at least partial decomposition of a compound under catalysis of a biological catalyst. The system is further provided with a storage unit ( 30 ) for storage of biological catalyst, and with a dosing device ( 31 ) for transferring biological catalyst into the decomposition unit (20).

EXHAUST GAS PURIFICATION APPARATUS FOR AN INTERNAL COMBUSTION ENGINE

A lean control, in which a target air fuel ratio is made to vary to a lean air fuel ratio and a rich air fuel ratio across a lean air fuel ratio, and a rich control, in which the target air fuel ratio is made to vary to a lean air fuel ratio and a rich air fuel ratio across a rich air fuel ratio, are alternately carried out, wherein when carrying out the lean control, a period per one time in which the target air fuel ratio becomes the lean air fuel ratio is made longer than a period per one time in which the target air fuel ratio becomes the rich air fuel ratio, and a deviation of the lean air fuel ratio from the lean air fuel ratio is made smaller than a deviation of the rich air fuel ratio from the lean air fuel ratio. 1. An exhaust gas purification apparatus for an internal combustion engine comprising:a first catalyst in a form of a three-way catalyst that is arranged in an exhaust passage of the internal combustion engine, and has an oxygen storage capacity;a second catalyst in the form of a three-way catalyst that is arranged in said exhaust passage at a downstream side of said first catalyst, and has an oxygen storage capacity; anda controller configured to make a target air fuel ratio of said internal combustion engine vary;wherein said controller configured to carry out lean control and rich control in an alternate manner, said lean control setting a reference lean air fuel ratio, which is an air fuel ratio set as a target mean value of the target air fuel ratio at the time of making the target air fuel ratio of said internal combustion engine vary and which is an air fuel ratio leaner than a stoichiometric air fuel ratio, said lean control making the target air fuel ratio of said internal combustion engine vary between a first lean air fuel ratio, which is an air fuel ratio leaner than said reference lean air fuel ratio, and a first rich air fuel ratio, which is an air fuel ratio richer than the stoichiometric air fuel ratio, and said rich control setting ...