КАТАЛИЗАТОР С УЛУЧШЕННЫМИ ПАРАМЕТРАМИ НАЧАЛА РАБОТЫ

Изобретение относится к металлическим сотовым элементам для очистки отработавших газов двигателей внутреннего сгорания. Сущность изобретения: катализатор для очистки отработавших газов двигателей внутреннего сгорания, содержащий сотовый элемент из гладких и гофрированных металлических листов с входной торцевой поверхностью и выходной торцевой поверхностью для отработавших газов, причем металлические листы снабжены отверстиями для уменьшения их теплоемкости, а на металлические листы нанесена катализаторная масса, при этом отверстия металлических листов заполнены катализаторной массой, а площадь отверстий всех отверстий в совокупности составляет от 5 до 80% площади металлических листов. Также использование катализатора для очистки отработавших газов двигателя внутреннего сгорания. Техническим результатом изобретения является уменьшение теплоемкости и теплопроводности катализатора. 2 н. и 10 з.п. ф-лы, 3 табл., 7 ил.

УСТРОЙСТВО ОЧИСТКИ ОТРАБОТАННЫХ ГАЗОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ (ВАРИАНТЫ)

Устройство очистки отработанных газов двигателя внутреннего сгорания содержит выпускной канал (15) для выведения отработанных газов, выпускаемых из двигателя, наружу, катализатор (5), расположенный в выпускном канале (15), канал (24а) впрыска, соединенный со стороной впуска катализатора (5) в выпускном канале (15), клапан (23) впрыска добавки, установленный в канале (24а) впрыска для подачи добавки в катализатор (5) по каналу (24а) впрыска, и приточную часть (30), которая обеспечивает подачу части отработанных газов, проходящих в выпускном канале в канал впрыска, и средство формирования продувочного потока. Выпускной канал имеет изогнутую часть (15а). Канал впрыска (24а) ответвляется наружу от середины изогнутой части выпускного канала. Приточная часть может представлять трубчатый элемент. Средство формирования продувочного потока имеет часть для столкновения, с которой сталкиваются отработанные газы, вводимые из приточной части. Такое выполнение уменьшает образование отложений в канале ...

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.

УСТРОЙСТВО ДЛЯ ОЧИСТКИ ОТРАБОТАННОГО ГАЗА

Изобретение может быть использовано в устройствах для очистки отработанных газов автомобильных двигателей внутреннего сгорания. Устройство (1) для очистки отработанного газа (ОГ) имеет компонент (2) очистки ОГ, который выполнен проточным в направлении (3) потока от стороны (4) набегающего потока к стороне (5) стекающего потока. В направлении (3) потока за стороной (5) стекающего потока предусмотрено устройство (6) подачи для восстановителя в устройство (1) для очистки ОГ. Устройство (6) подачи имеет направление (7) подачи, которое, по меньшей мере, частично проходит противоположно направлению (3) потока. Сторона (5) стекающего потока компонента (2) очистки ОГ, по меньшей мере, частично перекрыта пористым пластом (8). Между устройством (6) подачи и компонентом (2) очистки ОГ имеется расстояние (9), которое выбрано так, что впрыскиваемый восстановитель (10) достигает пористого пласта (8). Пористый пласт (8) содержит металлическую ткань или металлический нетканый материал. Раскрыт автомобиль ...

СИСТЕМА ХРАНЕНИЯ ПРИСАДКИ К ВЫХЛОПНЫМ ГАЗАМ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к обработке выхлопных газов двигателя внутреннего сгорания. Бак для хранения жидкой присадки к выхлопным газам выполнен из двух частей, нижней и верхней, изготовленных как две отдельные детали. Части собираются вместе, лишь когда по меньшей мере один внутренний компонент вставлен/установлен на по меньшей мере одной из этих двух отдельных деталей. Внутренним компонентом, закрепленным внутри по меньшей мере одной из половин, является нагреватель. Использование изобретения позволяет упростить размещение протяженного нагревателя и реализовать непосредственное соединение модуля насоса сквозь отверстие в баке. 2 н. и 12 з.п. ф-лы, 5 ил.

СИСТЕМА ВЫПУСКА ОТРАБОТАВШИХ ГАЗОВ, В ЧАСТНОСТИ, ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ ТРАНСПОРТНОГО СРЕДСТВА И НАГРЕВАТЕЛЬНЫЙ ЭЛЕМЕНТ, ИСПОЛЬЗУЕМЫЙ В ДАННОЙ СИСТЕМЕ

Система выпуска ОГ, в частности, для ДВС транспортного средства, содержащая направляющий канал (14) для ОГ, устройство (20) впрыска реактива (R) в протекающие в направляющем канале (14) ОГ (А), ниже по потоку за устройством (20) впрыска реактива смесительное устройство (22) для поддержания перемешивания впрыскиваемого устройством (20) впрыска реактива (R) с протекающими в направляющем канале (14) ОГ (А), ниже по потоку за устройством (20) впрыска реактива и выше по потоку перед смесительным устройством (22) устройство (24) нагрева реактива, расположенное в направляющем канале (14) для ОГ (А) и обтекаемое протекающими ОГ (А) и впрыскиваемым устройством (20) впрыска реактивом (R). Нагревательный элемент для устройства нагрева реактива системы выпуска ОГ содержит по меньшей мере два извитых в форме меандра электронагревательных участка. Каждый электронагревательный участок имеет в своем продольном направлении несколько выпуклостей, следующих друг за другом, ориентированных попеременно напротив ...

КАТАЛИТИЧЕСКИЙ ФИЛЬТР С ПРОТОЧНЫМИ СТЕНКАМИ С КАТАЛИЗАТОРОМ НЕЙТРАЛИЗАЦИИ ПРОСКОКА АММИАКА

Изобретение предназначено для очистки выхлопных газов. Каталитический монолитный фильтр с проточными стенками для использования в системе очистки выхлопов имеет первую торцевую поверхность, вторую торцевую поверхность, длину фильтра, определяемую расстоянием от первой торцевой поверхности до второй торцевой поверхности, продольное направление между первой торцевой поверхностью и второй торцевой поверхностью и первое и второе множества каналов, простирающихся в продольном направлении. Первое множество каналов открыто на первой торцевой поверхности и закрыто на второй торцевой поверхности, а второе множество каналов открыто на второй торцевой поверхности и закрыто на первой торцевой поверхности. Монолитный фильтр содержит пористый субстрат, имеющий поверхности, которые образуют каналы, и имеющий первую зону, простирающуюся в продольном направлении от первой торцевой поверхности ко второй торцевой поверхности на расстояние, меньшее длины фильтра, и вторую зону, простирающуюся в продольном ...

СИСТЕМЫ И СПОСОБЫ ОХЛАЖДЕНИЯ ФОРСУНКИ В СИСТЕМАХ ВПРЫСКА ЖИДКОСТИ ДЛЯ ВЫХЛОПНЫХ СИСТЕМ ДИЗЕЛЬНЫХ ДВИГАТЕЛЕЙ

Изобретение относится к системам снижения токсичности отработавших газов двигателей внутреннего сгорания (ДВС). Предложена система подачи жидкости для выхлопных систем дизельных двигателей или другого восстановителя в распылитель для впрыскивания в систему для дополнительной очистки выхлопных газов двигателя. Распылитель содержит форсунку в сборе, которая термически защищает жидкость для выхлопных систем дизельных двигателей от температур выхлопного газа. Также предложены способы подачи жидкости для выхлопных систем дизельных двигателей для охлаждения форсунки перед работой распылителя для снижения выбросов. 3 н. и 23 з.п. ф-лы, 11 ил.

ПРИСПОСОБЛЕНИЕ И СПОСОБ ФОРМОВАНИЯ КОЖУХА ОЧИСТНОГО УСТРОЙСТВА (ВАРИАНТЫ)

Изобретение относится к области обработки металлов давлением и может быть использовано для формирования кожуха очистительного устройства. Варианты способа и устройства позволяют получать кожух с некруглым профилем, полученный из начальной конфигурации с уменьшением размеров. При перемещении вставной части приспособления из открытого положения в закрытое положение внутренняя поверхность его кольцевой части толкает обжимные элементы внутрь, заставляя их взаимодействовать по существу со всей внешней поверхностью и перемещать ее из начальной конфигурации в расчетную конфигурацию, превращая начальный внешний профиль в расчетный внешний профиль с уменьшением размеров и формируя кожух из заготовки. Повышается точность размеров кожуха, имеющего некруглый профиль. 6 н. и 18 з.п. ф-лы, 15 ил.

КАТАЛИТИЧЕСКОЕ ИЗДЕЛИЕ ДЛЯ ПРИМЕНЕНИЯ В СИСТЕМЕ ОБРАБОТКИ ВЫХЛОПНЫХ ГАЗОВ

Группа изобретений относится к области катализаторов, а именно к каталитическим изделиям, предназначенным для обработки потока отработавших газов, образующихся при сгорании топлива. Описаны: каталитическое изделие, содержащее каталитически активную подложку, включающую один или более каналов, проходящих вдоль ее осевой длины, через которые при использовании протекает отработавший газ, образующийся при сгорании топлива, причем один или более каналов имеют первую поверхность для контакта с потоком отработавших газов, образующихся при сгорании топлива; при этом подложка выполнена из материала экструдированного ванадийсодержащего катализатора SCR, причем первый слой расположен по меньшей мере на части первой поверхности, при этом первый слой содержит покрытие из пористого оксида композиции каталитического нейтрализатора проскока аммиака, содержащего один или более металлов платиновой группы, поддерживаемых на материале носителя на основе частиц оксида металла, и при этом слой, содержащий покрытие ...

УЛУЧШЕННЫЕ РАМНЫЕ ЭЛЕМЕНТЫ ДЛЯ РАЗМЕЩЕНИЯ МОНОЛИТОВ

Предлагается элемент для поддержания монолитов, содержащих катализаторы, в потоке выхлопных газов от источников горения, содержащий две пары противоположных стенок, в котором стенки образуют прямоугольную или квадратную форму, внутреннее пространство, образованное стенками, впускной конец, выпускной конец, по меньшей мере один блокирующий элемент, по меньшей мере один мат и по меньшей мере один монолит, содержащий впуск, выпуск, четыре боковые стороны и по меньшей мере один катализатор, эффективный в отношении уменьшения концентрации одного или более газов в выхлопных газах, в котором по меньшей мере один мат и по меньшей мере один монолит расположены внутри рамного элемента таким образом, что по меньшей мере по меньшей мере один мат расположен между монолитом и каждой смежной стенкой, каждый блокирующий элемент расположен поперек впускного конца или выпускного конца рамного элемента и соединен с двумя противоположными сторонами рамного элемента. 2 н. и 12 з.п. ф-лы, 15 ил.

СОТОВЫЙ ЭЛЕМЕНТ С ИЗРЕЗАННЫМИ ИЛИ ИСПЕЩРЕННЫМИ НЕРОВНОСТЯМИ ТОРЦЕВЫМИ СТОРОНАМИ

Сотовый элемент (1) изготовлен из свернутых в рулон, скрученных в рулон и/или набранных в пакет металлических листов (2, 3) и имеет множество образованных ими по меньшей мере частично профилированных слоев (2), профильная структура которых образует каналы (4), проходящие от входной торцовой стороны (5) сотового элемента (1) до его выходной торцовой стороны (6). Часть образованных металлическими листами (2, 3) слоев имеет на своих краях (7, 8) с входной торцовой стороны (5) либо с входной торцовой стороны и выходной торцовой стороны (6) сотового элемента выемки (9, 10), придающие входной торцовой стороне (5), соответственно выходной торцовой стороне (6) сотового элемента испещренную или изрезанную неровностями структуру. Более 80% каналов (4) оканчиваются с по меньшей мере одной торцовой стороны (5, 6) сотового элемента в зоне по меньшей мере одной выемки (9, 10). Использование изобретения позволит обеспечить уменьшение вероятности осаждения частиц сажи на торцовых сторонах сотового элемента ...

ВЫХЛОПНАЯ СИСТЕМА С КАТАЛИЗАТОРОМ РЕФОРМИНГА

Изобретение относится к выхлопной системе, предназначенной для обработки выхлопного газа двигателя внутреннего сгорания. Выхлопная система включает тройной катализатор (TWC – three-way catalyst), катализатор реформинга топлива, расположенный по потоку после TWC, и устройство подачи топлива, расположенное по потоку до катализатора реформинга топлива, при этом первую часть выхлопного газа направляют в обход TWC и приводят в контакт с катализатором реформинга топлива в присутствии топлива, добавляемого из устройства подачи топлива, с образованием потока газообразных продуктов реформинга, а вторую часть выхлопного газа приводят в контакт с TWC и используют для нагревания катализатора реформинга топлива, после чего сбрасывают в атмосферу, и при этом поток газообразных продуктов реформинга рециркулируют в систему впуска двигателя. Изобретение обеспечивает улучшение теплообмена и максимальное снятие тепла выхлопного газа с целью улучшения каталитического реформинга. 7 з.п. ф-лы, 2 ил., 4 табл.

КАТАЛИЗАТОРНАЯ СИСТЕМА И ЕЕ ПРИМЕНЕНИЕ

Изобретение относится к катализаторной системе и ее применению для нейтрализации или снижения токсичности отработавших газов (ОГ). Сущность изобретения: катализаторная система для нейтрализации или снижения токсичности отработавших газов (ОГ) двигателя внутреннего сгорания, имеющая по меньшей мере два размещенных в общем корпусе (2) катализатора (3, 4), которые в направлении потока ОГ расположены последовательно и с интервалом (d) друг от друга и которые способны обеспечивать каталитическое сгорание содержащихся в обедненных ОГ углеводородов и моноксида углерода, и расположенная перед вторым корпусом (5) с размещенным в нем сажевым фильтром (6), причем интервал (d) между двумя соседними катализаторами составляет от 2 до 30 мм, а катализаторы (3, 4) представляют собой катализаторы окисления или комбинацию из катализаторов окисления и трехкомпонентных каталитических нейтрализаторов. Техническим результатом изобретения является обеспечение снижения скорости старения при каталитическом сгорании ...

НОСИТЕЛЬ РАЗМЕЩАЕМОГО ВБЛИЗИ ДВИГАТЕЛЯ КАТАЛИТИЧЕСКОГО НЕЙТРАЛИЗАТОРА, КАТАЛИТИЧЕСКИЙ НЕЙТРАЛИЗАТОР С ТАКИМ НОСИТЕЛЕМ, СИСТЕМА ВЫПУСКА ОТРАБОТАВШИХ ГАЗОВ И АВТОМОБИЛЬ

Носитель каталитического нейтрализатора, пригодный для применения в системе выпуска отработавших газов вблизи двигателя внутреннего сгорания, имеет множество проходящих рядом друг с другом от его входной стороны до его выходной стороны проточных для ОГ каналов и средства для поддержания либо создания турбулентности в потоке ОГ, проходящем через указанные каналы, причем носитель изготовлен из по меньшей мере одной фольги, условный предел Rp0,2 текучести которой при температуре 900°С составляет по меньшей мере 50 Н/мм2. Даны: соответствующий каталитический нейтрализатор, соответствующая система выпуска ОГ и автомобиль с системой выпуска. Такое выполнение позволяет повысить эффективность и долговечность устройства для нейтрализации и снижения токсичности ОГ, подвергающегося воздействию высоких термических и динамических нагрузок. 4 н. и 10 з.п. ф-лы, 4 ил.

КАЛИБРОВАННЫЙ НОСИТЕЛЬ КАТАЛИТИЧЕСКОГО НЕЙТРАЛИЗАТОРА С ГОФРИРОВАННОЙ ВТУЛКОЙ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Изобретение может быть применено в системах впуска отработавших газов ДВС самоходных машин и транспортных средств. Способ изготовления носителя каталитического нейтрализатора, содержащего сотовый элемент, состоящий из множества по меньшей мере частично профилированных или структурированных слоев, образующих проточные для текучей среды каналы, кожух, который по меньшей мере частично охватывает сотовый элемент и по меньшей мере одну гофрированную втулку, расположенную между сотовым элементом и кожухом и соединяющую их между собой, заключается в том, что изготавливают сотовый элемент, который имеет наружный размер, который по меньшей мере частично определяется свободными концами слоев, изготавливают по меньшей мере одну гофрированную втулку с профильным контуром, изготавливают кожух с внутренним контуром, сотовый элемент помещают по меньшей мере в одну гофрированную втулку, по меньшей мере одну гофрированную втулку вместе с находящимся в ней сотовым элементом помещают в кожух и кожух подвергают ...

СПОСОБ ИЗГОТОВЛЕНИЯ СОТОВОГО ЭЛЕМЕНТА ИЗ МЕТАЛЛИЧЕСКИХ ЛИСТОВ, ИМЕЮЩИХ ПО МЕНЬШЕЙ МЕРЕ ЧАСТИЧНО МНОГОСЛОЙНУЮ СТРУКТУРУ

Изобретение предназначено для изготовления сотовых элементов, применяемых, как правило, в качестве корпусов-носителей каталитических нейтрализаторов. Способ изготовления сотового элемента, в котором набирают в пакет и/или свертывают в рулон металлические листы. По меньшей мере одна часть металлических листов выполнена из первоначально многослойного материала, который включает по меньшей мере один слой из содержащей хром стали и по меньшей мере один содержащий в основном алюминий слой, которые при последующей термической обработке в значительной мере гомогенизируются за счет диффузии. По меньшей мере часть металлических листов имеет структуру, повышающую упругость сотового элемента до и во время термической обработки. Сотовый элемент вставляют в трубчатый кожух с таким предварительным сжатием, при котором при термической обработке обеспечивается постоянное прилегание листов друг к другу в местах их контакта. За счет дополнительных микроструктур по меньшей мере на одной части металлических ...

ЭЛЕКТРОИЗОЛИРУЮЩАЯ ОПОРНАЯ СТРУКТУРА С ВОЗМОЖНОСТЬЮ МЕТАЛЛИЧЕСКОГО ПРИСОЕДИНЕНИЯ, СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ И ЕЕ ПРИМЕНЕНИЕ

Изобретение относится к электротехнике и может быть использовано, в частности, в электрообогревательных элементах с сотовой структурой в тех случаях, когда электропроводящие детали необходимо располагать электроизолированно одна от другой. Задачей настоящего изобретения является создание электроизолирующей опорной структуры, выполненной с возможностью металлического присоединения к электрически отделенным одна от другой электропроводящим деталям, которая выдерживает высокие механические нагрузки во всех направлениях, в частности растягивающие усилия. Сущность изобретения состоит в том, что в опорной структуре в качестве электроизолирующего материала применен пространственно практически со всех сторон запрессованный керамический материал, который расположен между первой и второй металлическими структурами. При этом обеим металлическим структурам придана такая форма, что они практически со всех сторон оказывают давление на керамический материал, не соприкасаясь друг с другом. Способ получения ...

Каталитический нейтрализатор

Полезная модель предназначена для снижения токсичных выбросов от теплоэнергетических установок и может быть использована в теплоэнергетике и проектировании двигателей внутреннего сгорания транспортных средств.Устройство представляет собой корпус с каталитическими элементами, перед которым расположена камера предварительного нагрева. Камера выполнена в виде набора коаксиальных кольцевых пластин, установленных вдоль корпуса камеры нагрева, с электропитанием от внешнего источника. Перед камерой предварительного нагрева находится фильтр со сменными обоймами, перед фильтром установлен диффузор, а перед ним лопастной завихритель в узлах вращения. Температура воздуха перед входом в каталитический реактор измеряется датчиками температур и через блок сравнения регулируется изменением напряжения от источника питания, обеспечивая необходимый диапазон температур нагрева воздуха.

УСТРОЙСТВО ОЧИСТКИ ОТРАБОТАВШЕГО ГАЗА

Изобретение относится к устройству очистки отработавшего газа. Сущность изобретения: устройство очистки отработавшего газа содержит: выхлопную трубу; блок впрыскивания водной мочевины, который впрыскивает водную мочевину в выхлопную трубу; каталитический блок, который содержит использующий мочевину катализатор SCR, который способствует взаимодействию между аммиаком и оксидами азота, и носитель, который поддерживает использующий мочевину катализатор SCR в выхлопной трубе и размещается ниже по ходу потока от точки, где впрыскивается водная мочевина; блок измерения концентрации, расположенный ниже по ходу потока отработавшего газа от каталитического блока для измерения концентрации аммиака в отработавшем газе, который прошел через использующий мочевину катализатор SCR; блок регулирования, который регулирует впрыскивание водной мочевины с помощью блока впрыскивания водной мочевины на основании данных о концентрации аммиака, измеренной с помощью блока измерения концентрации; блок измерения концентрации ...

УСТРОЙСТВО СНИЖЕНИЯ ТОКСИЧНОСТИ ВЫХЛОПНЫХ ГАЗОВ

... 1. Устройство снижения токсичности выхлопных газов, присоединенное к двигателю, содержащее:окислительный каталитический нейтрализатор, имеющий загрузку благородного металла, меньшую, чем 100 грамм (г)/кубический фут (фут); икомпонент избирательного каталитического восстановления (SCR), расположенный ниже по потоку от окислительного каталитического нейтрализатора и работающий между 150°C и 300°C при работе двигателя, для уменьшения формирования NO в каталитическом нейтрализаторе с избирательным каталитическим восстановлением (SCR).2. Устройство снижения токсичности выхлопных газов по п. 1, в котором благородный металл содержит платину (Pt).3. Устройство снижения токсичности выхлопных газов по п. 1, в котором благородный металл содержит только палладий (Pd).4. Устройство снижения токсичности выхлопных газов по п. 1, содержащее форсунку для восстановителя, расположенную между окислительным каталитическим нейтрализатором и каталитическим нейтрализатором SCR.5. Устройство снижения токсичности ...

УСТРОЙСТВО И СПОСОБ ДЛЯ ИЗГОТОВЛЕНИЯ ЭЛЕМЕНТА С СОТОВОЙ СТРУКТУРОЙ, В ЧАСТНОСТИ КОРПУСА-НОСИТЕЛЯ КАТАЛИТИЧЕСКОГО НЕЙТРАЛИЗАТОРА

В заявке описано устройство для изготовления элемента с сотовой структурой, состоящего из множества набранных по меньшей мере в один пакет по меньшей мере частично структурированных слоев металлических листов, образующих множество каналов для прохождения текучей среды. Устройство включает поворачивающееся вокруг оси, действующее на каждый пакет вильчатое скручивающее приспособление и смыкающиеся в цельную форму профильные сегменты. Форма образована по меньшей мере двумя профильными сегментами. Каждый профильный сегмент может поворачиваться вокруг соответствующей оси, проходящей параллельно оси скручивающего приспособления, против направления поворота последнего, что позволяет предотвратить деформацию пакетов. 3 с. и 18 з.п. ф-лы, 19 ил.

КАТАЛИТИЧЕСКИЙ ПРЕОБРАЗОВАТЕЛЬ ОТРАБОТАВШИХ ГАЗОВ ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ МАЛОЙ МОЩНОСТИ И СПОСОБ ИЗГОТОВЛЕНИЯ КАТАЛИТИЧЕСКОГО ПРЕОБРАЗОВАТЕЛЯ

Для сокращения производственных расходов на изготовление преобразователя в расположенном вблизи ДВС малой мощности корпусе глушителя размещен сотовый элемент, который имеет покрытие из каталитически активного материала и состоит из слоев по меньшей мере частично структурированных металлических листов, образующих проточные каналы для прохождения, при этом указанный сотовый элемент расположен таким образом, чтобы обеспечить принудительное прохождение через него по меньшей мере подавляющей части отработавших газов, образующихся при работе этого ДВС малой мощности, причем такой сотовый элемент образован пакетом уложенных слоями, свернутых в рулон или сфальцованных металлических листов, который при установке в корпус глушителя таким образом обжат при одновременной пластической деформации по меньшей мере 10%, предпочтительно 20-30% каналов, что сотовый элемент полностью заполняет собой по меньшей мере часть объема этого корпуса. За счет значительной пластической деформации части каналов в остальном ...

КАТАЛИТИЧЕСКИЙ КОНВЕРТЕР С ЭЛЕКТРИЧЕСКИМ НАГРЕВОМ

Использование: преобразование отработанных газов двигателей. Сущность изобретения: каталитический конвертер с электрическим нагревом содержит расположенные последовательно в направлении потока отдельные участки с различной осевой длиной и различным электрическим сопротивлением. Нагреваемые отдельные участки разделены запертым для электрического тока участком элемента с сотовой структурой. При запуске двигателя холодные выхлопные газы поступают на электронагреваемый участок, подвергаются экзотермическому каталитическому преобразованию на электрически запертом участке. Температура газов падает, но остается выше необходимой для каталитического преобразования (300oC), а на следующем электронагреваемом участке вновь повышается до 500oC, после чего в форкатализаторе температура газов понижается до 300oC. Каталитическое преобразование выхлопных газов происходит по всей длине конвертера с изменением температуры на отдельных участках, но всегда температура выхлопных газов выше необходимой для каталитического ...

КАТАЛИТИЧЕСКИЙ РЕАКТОР С ДВУМЯ ИЛИ БОЛЕЕ ЭЛЕМЕНТАМИ С СОТОВОЙ СТРУКТУРОЙ В ОДНОМ ТРУБООБРАЗНОМ КОЖУХЕ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Использование: очистка отработанных газов двигателей внутреннего сгорания преимущественно на транспортных средствах. Сущность изобретения: каталитический реактор состоит из трубообразного кожуха, в которой вставлено два отдельных элемента с сотовой структурой из листьев со структурированными слоями. Для обеспечения экономичного изготовления в крупносерийном производстве применяют упругие элементы с сотовой структурой, вставленные с предварительным натяжением в трубообразный кожух. Предварительное натяжение достигается путем упругого сжатия элементов с сотовой структурой на величину, составляющую от 2 до 10% их теоретического, без внутренних напряжений диаметра, причем их упруго сжимают перед вводом в трубообразный кожух и/или трубообразный кожух пластически сжимают после введения элементов с сотовой структурой. Такие элементы остаются благодаря их предварительному натяжению стабильными и во время механических нагрузок при ускоренных процессах изготовления, и пригодны для пайки в вертикальном ...

УСТРОЙСТВО И СПОСОБ ГЛУШЕНИЯ ШУМА В СИСТЕМЕ ВЫПУСКА ОТРАБОТАВШИХ ГАЗОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

... 1. Сотовый элемент (1), устанавливаемый в системе выпуска отработавших газов двигателя внутреннего сгорания и имеющий в основном отделенные друг от друга проточные для отработавших газов каналы (5, 8) и осевую длину (L), отличающийся тем, что он имеет по меньшей мере первое подмножество каналов (5) и второе подмножество каналов (8), при этом площади (6, 7, 9, 10) поперечного сечения каналов (5, 8) по меньшей мере одного из обоих их подмножеств изменяются по осевой длине (L) сотового элемента (1), за счет чего обеспечивается не одинаковая продолжительность прохождения отработавших газов (3) через каналы (5, 8), относящиеся к различным их подмножествам. 2. Сотовый элемент (1) по п.1, отличающийся тем, что каждый из каналов (5) первого их подмножества имеет первую площадь (6) входного поперечного сечения и первую площадь (7) выходного поперечного сечения, а каждый из каналов (8) второго их подмножества имеет вторую площадь (9) входного поперечного сечения и вторую площадь (10) выходного поперечного ...

КАТАЛИЗАТОР ДЛЯ УДАЛЕНИЯ ОКСИДОВ АЗОТА ИЗ ОТРАБОТАВШИХ ГАЗОВ ДИЗЕЛЬНЫХ ДВИГАТЕЛЕЙ

... 1. Катализатор для удаления оксидов азота из отработавших газов (ОГ) дизельных двигателей, состоящий из носителя длиной L и каталитически активного покрытия из одной или нескольких материальных зон, содержащих- цеолит или цеолитоподобное соединение, содержащий/содержащее медь в количестве от 1 до 10 мас.% в пересчете на всю его массу и выбранный/выбранное из группы, включающей шабазит, SAPO-34, ALPO-34 и β-цеолит, и- по меньшей мере одно соединение, выбранное из группы, включающей оксид бария, гидроксид бария, карбонат бария, оксид стронция, гидроксид стронция, карбонат стронция, оксид празеодима, оксид лантана, оксид магния, смешанный оксид магния и алюминия, оксид щелочного металла, гидроксид щелочного металла, карбонат щелочного металла и их смеси.2. Катализатор по п. 1, отличающийся тем, что цеолит, соответственно цеолитоподобное соединение, имеет средний размер пор менее 4 ангстрем и выбран/выбрано из группы, включающей шабазит, SAPO-34 и ALPO-34.3. Катализатор по п. 1 или 2, отличающийся ...

УСТРОЙСТВО С ПО МЕНЬШЕЙ МЕРЕ ОДНИМ ФОРМООБРАЗУЮЩИМ СЕГМЕНТОМ ДЛЯ ИЗГОТОВЛЕНИЯ МЕТАЛЛИЧЕСКИХ СОТОВЫХ ЭЛЕМЕНТОВ И СПОСОБ ИЗГОТОВЛЕНИЯ МЕТАЛЛИЧЕСКИХ СОТОВЫХ ЭЛЕМЕНТОВ

... 1. Устройство (1) для свертывания по меньшей мере частично профилированных листов фольги в сотовую структуру (2), имеющее по меньшей мере следующие компоненты: по меньшей мере одну скручивающую оправку (3), расположенную в центральной части (4) устройства (1) и имеющую зажим (5) для по меньшей мере одного листа фольги, и по меньшей мере один формообразующий сегмент (6) с по меньшей мере одним направляющим элементом (7), который служит для обеспечения направленного перемещения по меньшей мере одного листа фольги в процессе его свертывания и выполнен с по меньшей мере одним роликом (9) и по меньшей мере одной поворотной зажимной колодкой (8). ! 2. Устройство (1) по п.1, в котором по меньшей мере один формообразующий сегмент (6) выполнен перемещаемым относительно по меньшей мере одной скручивающей оправки (3). ! 3. Устройство (1) по п.1 или 2, в котором по меньшей мере один формообразующий сегмент (6) выполнен с примыкающими друг к другу направляющим элементом (7) и зажимной колодкой (8).

Многоступенчатый каталитический нейтрализатор отработавших газов дизеля

Многоступенчатый каталитический нейтрализатор отработавших газов дизеля предназначен для использования при реализации очистки отработавших газов двигателей внутреннего сгорания с воспламенением от сжатия. Устройство содержит кожух с внешней и внутренней стенками и теплоизоляцией между ними, торцевые крышки, корпус с блоком фильтрации твердых частиц, пористыми проницаемыми металлокерамическими каталитическими окислительным, окислительно-восстановительным и восстановительным блоками, поперечными перегородками со сквозными и глухими окнами. Блоки установлены последовательно попарно в сквозные и глухие окна поперечных перегородок с образованием кассет. Окислительно-восстановительный и восстановительный блоки установлены последовательно парой. Окислительный блок и блок фильтрации твердых частиц также установлены последовательно парой. Каждая последующая перегородка развернута относительно продольной оси нейтрализатора по сравнению с предыдущей перегородкой на угол, равный углу между осями сквозного ...

УСТРОЙСТВО ДЛЯ НАНЕСЕНИЯ ПОКРЫТИЯ НА ПОДЛОЖКУ

Устройство для смешивания отработанного газа с добавкой

СИСТЕМА ОХЛАЖДЕНИЯ ВЫХЛОПНЫХ ГАЗОВ ТРАНСПОРТНОГО СРЕДСТВА-АМФИБИИ

... 1. Система охлаждения выхлопных газов транспортного средства-амфибии, работающего в режимах на суше и на воде, содержащая: выхлопную систему, подлежащую охлаждению; по меньшей мере, один воздушно-жидкостный теплообменник; и первую охлаждающую жидкость в тепловом контакте с выхлопной системой и, по меньшей мере, один воздушно-жидкостный теплообменник, при этом при эксплуатации транспортного средства-амфибии первая охлаждающая жидкость нагревается посредством выхлопной системы и охлаждается, по меньшей мере, посредством одного воздушно-жидкостного теплообменника. 2. Система по п.1, дополнительно содержащая, по меньшей мере, один жидкостно-жидкостный теплообменник в тепловом контакте или с первой или со второй охлаждающей жидкостью, при этом при эксплуатации транспортного средства-амфибии первая или вторая охлаждающая жидкость могут охлаждаться посредством, по меньшей мере, одного жидкостно-жидкостного теплообменника. 3. Система по п.1, в которой выхлопная система, подлежащая охлаждению, содержит ...

СОТОВЫЙ ЭЛЕМЕНТ С ИЗРЕЗАННЫМИ ИЛИ ИСПЕЩРЕННЫМИ НЕРОВНОСТЯМИ ТОРЦОВЫМИ СТОРОНАМИ

... 1. Сотовый элемент (1), изготовленный из свернутых в рулон, скрученных в рулон и/или набранных в пакет металлических листов (2, 3) и имеющий множество образованных ими по меньшей мере частично профилированных слоев (2), профильная структура которых образует каналы (4), проходящие от входной торцовой стороны (5) сотового элемента (1) до его выходной торцовой стороны (6), отличающийся тем, что по меньшей мере часть образованных металлическими листами (2, 3) слоев имеет на своих краях (7, 8) с входной торцовой стороны (5) и/или с выходной торцовой стороны (6) сотового элемента выемки (9, 10), придающие входной торцовой стороне (5), соответственно выходной торцовой стороне (6) сотового элемента, испещренную или изрезанную неровностями структуру. ! 2. Сотовый элемент (1) по п.1, изготовленный из попеременно чередующихся слоев в основном гладких (2) и гофрированных (3) металлических листов, отличающийся тем, что выемки имеют только гладкие металлические листы (2). ! 3. Сотовый элемент (1) по ...

ОКИСЛИТЕЛЬНЫЙ КАТАЛИЗАТОР И СИСТЕМА ВЫПУСКА ВЫХЛОПНЫХ ГАЗОВ ДЛЯ ДИЗЕЛЬНОГО ДВИГАТЕЛЯ

СМЕСИТЕЛЬ ДЛЯ СМЕШИВАНИЯ ОТРАБОТАВШИХ ГАЗОВ

СПОСОБ НАНЕСЕНИЯ ПОКРЫТИЯ НА ФИЛЬТРОВАЛЬНУЮ ОСНОВУ

КАТАЛИЗАТОР ДЛЯ ОКИСЛЕНИЯ МЕТАНА И ЭТАНА В ВЫХЛОПНЫХ ГАЗАХ ДВИГАТЕЛЕЙ, РАБОТАЮЩИХ НА ПРИРОДНОМ ГАЗЕ

КАТАЛИЗАТОР СГОРАНИЯ ТВЕРДЫХ ЧАСТИЦ (РСС ИЛИ РССz) И КАТАЛИЗАТОР СГОРАНИЯ ТВЕРДЫХ ЧАСТИЦ С ПОКРЫТИЕМ (СРСС ИЛИ СРССz)

КАТАЛИЗАТОР СКВ, ДОПУСКАЮЩИЙ ПЕРЕДОЗИРОВКУ NH3

СИСТЕМА ОЧИСТКИ ВЫХЛОПНЫХ ГАЗОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

... 1. Система очистки выхлопных газов двигателя внутреннего сгорания, в которой катализатор очистки выхлопных газов размещен в выпускном канале двигателя для обеспечения реакции NO, содержащегося в выхлопном газе, и реформированных углеводородов, чтобы формировать восстанавливающее промежуточное соединение, содержащее азот и углеводороды, причем на поверхность протекания выхлопных газов катализатора очистки выхлопных газов нанесен катализатор на основе драгоценных металлов, и базовая часть поверхности протекания выхлопных газов формируется вокруг катализатора на основе драгоценных металлов, при этом катализатор очистки выхлопных газов имеет свойство формирования восстанавливающего промежуточного соединения и восстановления NO, содержащегося в выхлопном газе, посредством действия восстановления сформированного восстанавливающего промежуточного соединения, при вызывании колебания концентрации углеводородов, протекающих в катализатор очистки выхлопных газов, в предварительно определенном диапазоне ...

УСТРОЙСТВО БАКА И ДОЗИРУЮЩАЯ СИСТЕМА ВОССТАНОВИТЕЛЯ

... 1. Устройство (1) для обеспечения жидкого восстановителя, имеющее бак (2) восстановителя для хранения восстановителя с дном (3) бака, которое имеет изолированную камеру (4), и с дозирующим узлом (6) для забора восстановителя из бака (2) восстановителя в расположенной на изолированной камере (4) точке (7) забора, причем дозирующий узел (6) расположен внутри изолированной камеры (4).2. Устройство (1) по п.1, в котором изолированная камера (4) расположена в дне (3) бака.3. Устройство (1) по п.1, в котором изолированная камера (4) расположена в боковой стенке (54) бака рядом с дном (3) бака.4. Устройство (1) по одному из пп.1-3, в котором дозирующий узел (6) разъемно соединен с баком (2) восстановителя.5. Устройство (1) по одному из пп.1-3, в котором дозирующий узел имеет по меньшей мере один компонент (36) из группы следующих компонентов:- насос;- фильтр;- датчик давления;- температурный датчик, и- клапан.6. Устройство (1) по одному из пп.1-3, в котором изолированная камера (4) выполнена с ...

КАТАЛИТИЧЕСКИЙ ФИЛЬТР С ПРОТОЧНЫМИ СТЕНКАМИ, СНАБЖЕННЫЙ МЕМБРАНОЙ

УСТРОЙСТВО ДЛЯ ОЧИСТКИ ВЫХЛОПНЫХ ГАЗОВ

... 1. Устройство для очистки выхлопных газов двигателя, содержащее ! корпус, имеющий впускное отверстие и выпускное отверстие и образующий продольный путь движения потока между указанными впускным отверстием и выпускным отверстием; ! элемент для обработки текучей среды, установленный в корпусе на продольном пути движения потока и предназначенный для очистки выхлопных газов; ! патрубок, сообщающийся по текучей среде, по меньшей мере, с одним из указанных отверстий корпуса и имеющий первый и второй цилиндрический участки, при этом первый участок имеет первое поперечное сечение с внутренним диаметром, а второй участок имеет в основном удлиненное второе поперечное сечение с внутренней шириной и внутренней длиной; ! при этом внутренняя длина второго поперечного сечения патрубка меньше, чем внутренний диаметр первого поперечного сечения патрубка, а внутренняя ширина второго поперечного сечения патрубка больше, чем внутренний диаметр первого поперечного сечения патрубка. ! 2. Устройство по п.1, в ...

СОТОВЫЙ ЭЛЕМЕНТ, СОСТОЯЩИЙ ИЗ СЛОЕВ С ВЫВЕРНУТЫМИПРОФИЛЬНЫМИ ЭЛЕМЕНТАМИ И СЛОЕВ С СОПРЯЖЕННЫМИ СТРУКТУРАМИ

... 1. Сотовый элемент (13), прежде всего носитель каталитического нейтрализатора и/или фильтр, предпочтительно для применения в автомобильной системе выпуска отработавших газов, образованный из попеременно чередующихся преимущественно гладких (10) и по меньшей мере частично профилированных (1) слоев, образующих проточные для текучей среды в основном в осевом направлении (19) потока полости (12), при этом профилированные слои (1) имеют экстремумы (4, 5) своих профильных структур, контактирующие с соседними преимущественно гладкими слоями (10), и расположенные в зоне этих экстремумов (4, 5) профильных структур вывернутые профильные элементы (2), которые выступают в указанные полости (12) и которые имеют в поперечном сечении сотового элемента (13) плоскостью, перпендикулярной направлению (19) потока, примерно инверсную по отношению к экстремумам (4, 5) профильных структур профилированных слоев форму с образованием в результате в зоне расположения вывернутых профильных элементов (2) разрывов ( ...

METHOD FOR MANUFACTURE AND REINFORCEMENT OF CATALYST BLOCK

Behälter für eine Flüssigkeit, insbesondere ein Reduktionsmittel

Behälter (1) für eine Flüssigkeit (2) mit einer Behälterwand (3) und wenigstens einem Innenraum (4) zur Aufnahme der Flüssigkeit (2), wobei der Behälter (1) zumindest eine Entnahmeleitung (5) zur Entnahme von in dem wenigstens einen Innenraum (4) befindlicher Flüssigkeit (2) aufweist, wobei die zumindest eine Entnahmeleitung (5) Relativbewegungen von zueinander beabstandeten Bereichen der Behälterwand (3) zumindest reduziert.

Integriertes Nachbehandlungssystem

Hierin beschriebene Implementierungen betreffen Merkmale für ein integriertes Nachbehandlungssystem. In einer Implementierung umfasst ein integriertes Nachbehandlungssystem ein Gehäuse, das einen Gegenflansch mit einem ersten konstanten Durchmesser aufweist, und eine Katalysatorkomponente, die so gestaltet ist, dass sie mit dem Gegenflansch des Gehäuses zusammenpasst. Die Katalysatorkomponente beinhaltet einen Ummantelungskörper, der einen ersten Abschnitt einschließt, der größenmäßig so gestaltet ist, dass er einen zweiten konstanten Durchmesser aufweist, der mit dem ersten konstanten Durchmesser des Gegenflansches zusammenpasst. In einer anderen Implementierung umfasst ein integriertes Nachbehandlungssystem ein Gehäuse, eine Katalysatorkomponente, die innerhalb des Gehäuses angeordnet ist, einen Partikelfilter mit einem Außengehäuse und einen Partikelfilterverbinder, der mit dem Partikelfilter am Auslass verbunden ist. Ein Ende des Partikelfilterverbinders wird auf ein Ende des Partikelfilters ...

Konischer Wabenkörper mit schräg radial verlaufenden Kanälen

Die vorliegende Erfindung betrifft einen aus Lagen (2, 3) gewickelten und/oder geschichteten Wabenkörper (1) mit einer geometrischen Mittelachse (4) und einem um die Mittelachse (4) herum rotationssymmetrisch angeordneten Hohlraum (5), sowie einer äußeren Mantelfläche (6), wobei jede Lage (2, 3) annähernd konzentrisch um die Mittelachse (4) verläuft, wobei mindestens eine der Lagen (2) zumindest teilweise strukturiert ist, so dass die Lagen (2, 3) eine Vielzahl von für ein Fluid durchströmbaren Kanälen (7) bilden, die von dem Hohlraum (5) in einem nicht rechten Konuswinkel () zur Mittelachse (4) nach außen zur äußeren Mantelfläche (6) verlaufen, und wobei die Kanäle (7) einen sich in ihrem Verlauf von innen nach außen ändernden Kanalquerschnitt (7i, 7a) aufweisen. Bevorzugt beträgt der Konuswinkel () zur Mittelachse (4) 25° bis 85°, vorzugsweise 40° bis 70°, insbesondere etwa 45°. Die besondere Form entsteht insbesondere dadurch, dass mindestens eine strukturierte Lage (2) im Wechsel mit ...

Abgasreinigungseinrichtung und Düse für dieselbe

Eine Düse (1) für eine Abgasreinigungsanlage weist einen Düsenkörper (10), einen im Inneren des Düsenkörpers (10) beweglich angeordneten Kolben (2), und eine Feder (3), welche zwischen dem Düsenkörper (10) und dem Kolben (2) angeordnet ist, auf. An dem Düsenkörper (10) sind ein Düseneinlass (11) für ein flüssiges Reduktionsmittel und eine Düsenmündung (14) ausgebildet. Dabei erstreckt sich zwischen dem Düseneinlass (11) und der Düsenmündung (14) ein Strömungskanal (12) für das flüssige Reduktionsmittel, und weitet sich die Düsenmündung (14) ausgehend vom Strömungskanal (12) zu einer Düsenöffnung (13) auf. Der Kolben (2) weist einen Kolbenkopf (21) auf. Dabei ist der Kolbenkopf (21) im Inneren der Düsenmündung (14) angeordnet und ausgebildet, die Düsenmündung (14) wahlweise zu verschließen oder freizugeben. Die Feder (3) spannt den Kolben (2) in eine Richtung vor, in welcher der Kolbenkopf (21) die Düsenmündung (14) verschließt. Dabei ist ein größter Durchmesser (D13) der Düsenöffnung (13 ...

Abgasnachbehandlungsanordnung

Die vorliegende Erfindung betrifft eine Abgasnachbehandlungsanordnung (1) an einer Verbrennungskraftmaschine, aufweisend zwei in Abgasströmungsrichtung aufeinander folgend angeordnete Abgasnachbehandlungskomponenten, wobei die Längsachsen beider Abgasnachbehandlungskomponenten in einem Winkel von 30 bis 150 Grad zueinander angeordnet verlaufen, wobei zwischen einer Außenmantelfläche der ersten Abgasnachbehandlungskomponente und einem Gehäuse der Abgasnachbehandlungsanordnung ein Strömungskanal ausgebildet ist und das Abgas nach Durchströmen der ersten Abgasnachbehandlungskomponente umgelenkt wird, wobei zumindest teilweise das Abgas durch den Strömungskanal geführt wird, bevor es in die zweite Abgasnachbehandlungskomponente einströmt, welche sich dadurch auszeichnet, dass im Bereich des Strömungskanals ein Injektor zum Eindüsen eines Reduktionsmittels in den Strömungskanal vorgesehen ist, wobei die zweite Abgasnachbehandlungskomponente ein SCR Katalysator ist.

VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG EINES WABENKÖRPERS, INSBESONDERE KATALYSATOR-TRÄGERKÖRPERS, MIT GEHÄUSE

Abgassteuersystem für Verbrennungsmotor

Abgassteuersystem für einen Verbrennungsmotor, umfassend:eine Abgassteuervorrichtung (60, 70), die in einer Abgasleitung (5) des Verbrennungsmotors (1) vorgesehen ist, wobei die Abgassteuervorrichtung (60, 70) einen Katalysator zur selektiven NOx-Reduktion (52) mit einer Funktion zum selektiven Reduzieren von NOx im Abgas mit Ammoniak als einem Reduktionsmittel und ein Abgassteuerelement (51) mit einer von dem Katalysator zur selektiven NOx-Reduktion (52) verschiedenen Abgassteuerfunktion einschließt;ein Zugabeventil (54), das in der Abgasleitung (5) vorgesehen ist und ein Additiv,das Ammoniak oder ein Vorläufer von Ammoniak ist, dem Katalysator zur selektiven NOx-Reduktion (52) zuführt; undeine Zugabesteuereinheit, die die Zugabe des Additivs durch das Zugabeventil (54) steuert; undeine Temperaturerhöhungsbehandlungseinheit, die, wenn eine festgelegte Bedingung für die Durchführung der Temperaturerhöhung erfüllt ist, eine Temperaturerhöhungsbehandlung durchführt, die die Temperatur des ...

Abgassteuersystem für Verbrennungsmotor

Es wird eine Abgassteuervorrichtung offenbart, die ein Abgassteuerelement aufweist, welches von einem SCR-Katalysator verschieden ist. Eine Temperaturerhöhungsbehandlungseinheit führt eine Temperaturerhöhungsbehandlung durch, bei der die Temperatur des in die Abgassteuervorrichtung strömenden Abgases so erhöht, dass die Temperatur des Abgassteuerelements auf eine festgelegte Zieltemperatur erhöht wird. In diesem Fall wird, wenn der Betrieb des Verbrennungsmotors gestoppt wird während die Temperaturerhöhungsbehandlungseinheit keine Temperaturerhöhungsbehandlung durchführt, nach dem Betriebsstop des Verbrennungsmotors eine Zugabe eines Additivs aus einem Zugabeventil zu dem SCR-Katalysator durchgeführt. Wenn der Betrieb des Verbrennungsmotors gestoppt wird während die Temperaturerhöhungsbehandlungseinheit die Temperaturerhöhungsbehandlung durchführt, wird nach dem Betriebsstop des Verbrennungsmotors keine Zugabe des Additivs aus einem Zugabeventil zu dem SCR-Katalysator durchgeführt.

Abgasnachbehandlungssystem und Brennkraftmaschine

Abgasnachbehandlungssystem, nämlich SCR-Abgasnachbehandlungssystem, einer Brennkraftmaschine, mit einem in einem Reaktorraum (10) aufgenommenen SCR-Katalysator (9), mit einer zum Reaktorraum (10) und damit zum SCR-Katalysator (9) führenden Abgaszuleitung (8) und mit einer vom Reaktorraum (10) und damit vom SCR-Katalysator (9) wegführenden Abgasableitung (11), mit einer der Abgaszuleitung (8) zugeordneten Einbringeinrichtung (16) zum Einbringen eines Reduktionsmittels, insbesondere von Ammoniak oder einer Ammoniak-Vorläufersubstanz, in das Abgas, und mit einer von der Abgaszuleitung (8) stromabwärts der Einbringeinrichtung (16) bereitgestellten Mischstrecke (18) zum Mischen des Abgases mit dem Reduktionsmittel stromaufwärts des Reaktorraums (10) bzw. SCR-Katalysators (9), wobei innerhalb des Reaktorraums (10) mindestens eine Blasvorrichtung (24) positioniert ist, die dem Freiblasen des SCR-Katalysators (9) dient.

Bimodales Harnstoff-SCR-Katalysatorsystem zur verbesserten NOx Umwandlung und erhöhter Lebensdauer

Vorrichtung zur Emissionskontrolle.

Abgasreinigungskatalysator und Herstellungsverfahren dafür

Dieser Katalysator umfasst eine untere katalytische Schicht 2 mit einer katalytischen Fähigkeit, HC und CO zu oxidieren, und eine obere katalytische Schicht 3 mit einer katalytischen Fähigkeit, NOx zu reduzieren. Die untere katalytische Schicht 2 enthält Pt und Pd, die als katalytische Metalle dienen, Zeolith, ein Ce-haltiges Oxid und aktiviertes Aluminiumoxid, und die obere katalytische Schicht 3 enthält aktiviertes Aluminiumoxid, das ein Rh-dotiertes Ce-haltiges Oxid lädt, und ein NOx-Speichermaterial.

Wabenkörper aus Lagen mit Umstülpungen und Lagen mit Gegenstrukturen

Die Erfindung betrifft einen aus abwechselnden im wesentlichen glatten (10) und zumindest teilweise strukturierten (1) Lagen gebildeten Wabenkörper (13), insbesondere Katalysator-Trägerkörper und/oder Filter, vorzugsweise für das Abgassystem eines Automobils, wobei die Lagen (1, 10) für ein Fluid im Wesentlichen in einer axialen Strömungsrichtung (19) durchlässige Hohlräume (12) bilden, wobei die strukturierten Lagen (1) Strukturextrema (4, 5) aufweisen, die mit benachbarten im Wesentlichen glatten Lagen (10) in Kontakt sind, und wobei die strukturierten Lagen (1) im Bereich ihrer Strukturextrema (4, 5) Umstülpungen (2) aufweisen, die in die Hohlräume (12) hineinragen und in einem zur Strömungsrichtung (19) senkrechten Querschnitt durch den Wabenkörper (13) eine zu den Strukturextrema (4, 5) etwa inverse Form aufweisen, so dass im Bereich der Umstülpungen (2) Unterbrechungen (22) in den Strukturextrema (4, 5) entstehen. Erfindungsgemäß sind im Bereich der Umstülpungen (2) und/oder der Strukturextrema ...

Katalysator zum Anordnen in einer Abgasleitung, federndes Dichtblech für einen solchen Katalysator und Abgasleitung

Katalysator (2) zum Anordnen in einer Abgasleitung (6), wobei der Katalysator (2) einen Katalysatorrahmen (4) aufweist, gekennzeichnet durch zumindest ein federndes Dichtblech (10), das radial außen an dem Katalysatorrahmen (4) angeordnet ist.

In Zonen aufgeteilter katalysierter Substratmonolith

Beschrieben wird ein in Zonen aufgeteilter katalysierter Substratmonolith, der eine erste Zone und eine zweite Zone umfasst, wobei die erste Zone und die zweite Zone axial in Reihe angeordnet sind, wobei die erste Zone ein auf einen Träger geladenes Platingruppenmetall und ein erstes Oxid eines unedlen Metalls, das aus der Gruppe ausgewählt ist, die aus Eisenoxid, Manganoxid, Kupferoxid, Zinkoxid, Nickeloxid und Gemischen hiervon besteht, oder ein erstes unedles Metall, das aus der Gruppe ausgewählt ist, die aus Eisen, Mangan, Kupfer, Zink, Nickel und Gemischen hiervon besteht, das auf ein anorganisches Oxid geladen ist, umfasst und die zweite Zone auf einen Zeolith geladenes Kupfer oder Eisen und ein zweites Oxid eines unedlen Metalls, das aus der Gruppe ausgewählt ist, die aus Eisenoxid, Manganoxid, Kupferoxid, Zinkoxid, Nickeloxid und Gemischen hiervon besteht, oder ein zweites unedles Metall, das aus der Gruppe ausgewählt ist, die aus Eisen, Mangan, Kupfer, Zink, Nickel und Gemischen ...

Arrangement of a catalytic converter housing in the exhaust line of vehicle internal combustion engines

The inlet opening into the housing of a catalytic converter arranged in the exhaust line of a motor vehicle is situated on that side of the housing remote from the internal combustion engine. Since the exhaust line leading to the inlet opening is led through the catalytic converter housing, a greater pipe length between internal combustion engine and inlet opening can be achieved without having to accept increased heat losses as a result.

Haltendes Dichtungsmaterial, Herstellungsverfahren von haltendem Dichtungsmaterial und Abgasreinigungsvorrichtung

Catalytic converter for IC engines has intake socket with curved section containing flow element to form flow channels with socket wall

The catalytic converter has a housing with catalyst carrier and intake socket. The socket (16) has a curved section with at least one flow element (28), positioned so that flow channels are formed by element guide surfaces (30) and a wall of the socket. The channels evenly distribute the exhaust gas to an intake flow surface (26) of the catalyst carrier (14). At least some of the channels extend conically in flow direction. The flow element is welded to the socket wall.

I.c. engine exhaust gas temperature increasing device uses selectively closed throttle valve downstream of exhaust catalyser with simultaneous increase in quantity of fuel injected into engine

The exhaust gas temperature increasing device uses an exhaust throttle valve (49) inserted in the exhaust gas line (45,47), which is moved into a fully closed position by a valve control device, with simultaneous control of the main fuel injection device for the engine (1), for increasing the quantity of fuel injected by the fuel injection valves (32), for heating an emission control catalyser (46) inserted in the exhaust line upstream of the throttle valve to its required working temperature.. An Independent claim for an i.c. engine exhaust gas temperature increasing method is also included.

Aufbau einer metallischen Wabenstruktur und Verfahren zu dessen Herstellung

Wabenstruktur (1) mit einer Vielzahl von im Wesentlichen parallel zueinander angeordneten Kanälen (2), umfassend eine Lage (3) von zumindest teilweise strukturierten Blechfolien (4, 5) sowie ein Gehäuse (6), dadurch gekennzeichnet, dass die Lage (3) eine Anzahl (N) zumindest teilweise strukturierte Blechfolien (5) und eine Anzahl (N + 1) glatte Blechfolien (4) umfasst, wobei die Anzahl N = 1, 2 oder 3 ist und zwei äußere glatte Blechfolien (4) vorgesehen sind. Weiter wird ein Verfahren zur Herstellung einer solchen Wabenstruktur (1) beschrieben. Solche Wabenstrukturen (1) werden insbesondere in Abgasanlagen mobiler Verbrennungskraftmaschinen eingesetzt.

RICHTUNG

WABENKÖRPER AUS LAGEN MIT UMSTÜLPUNGEN UND LAGEN MIT GEGENSTRUKTUREN

VERFAHREN ZUM HERSTELLEN VON ABGASFÜHRENDEN VORRIC

VERFAHREN ZUR HERSTELLUNG EINES RINGFÖRMIGEN WABENKÖRPERS, SOWIE RINGFÖRMIGER WABENKÖRPER

Niederdruck EGR-System mit Turbo-Bypass

Abgasleitsystem (1) für einen Ottomotor (2) mit einer an einen Auslasskrümmer (2.1) des Ottomotors (2) anschließbaren Abgasleitung (2.3), mit einer an einen Einlasskrümmer (2.2) des Ottomotors (2) anschließbaren Einlassleitung (2.4) und mit einem in der Einlassleitung (2.4) angeordneten Ladeluftverdichter (4) sowie mit einer in der Abgasleitung (2.3) angeordneten Turbine (3), wobei die Abgasleitung (2.3) mindestens eine Bypass-Leitung (1.1) mit einer Bypass-Drosselklappe (1.4) aufweist, die stromauf der Turbine (3) an einer Abzweigung (1.1a) an der Abgasleitung (2.3) abzweigt und die stromab der Turbine (3) an einer Mündung (1.1b) in die Abgasleitung (2.3) mündet, und dass mindestens eine Abgasrückführungsleitung (1.5) mit einer EGR-Drosselklappe (1.3) vorgesehen ist, die an einer Abzweigung (1.5a) an der Abgasleitung (2.3) abzweigt und die in der Einlassleitung (2.4) an einer Mündung (1.5b) mündet, wobei eine Kopplungsleitung (1.7) mit einem ersten Knotenpunkt (1.7a) und mit einem zweiten ...

KATALYTISCHER WANDSTROMFILTER, DER EINE MEMBRAN AUFWEIST

Die vorliegende Erfindung betrifft einen katalytischen Wandstrom-Monolith zur Verwendung in einem Emissionsbehandlungssystem, wobei der Monolith ein poröses Substrat umfasst und eine erste Fläche und eine zweite Fläche, die eine Längsrichtung dazwischen definieren, und eine erste und eine zweite Vielzahl von Kanälen, die sich in der Längsrichtung erstrecken, aufweist, wobei die erste Vielzahl von Kanälen eine erste Vielzahl von inneren Oberflächen liefert und an der ersten Fläche offen und an der zweiten Fläche geschlossen ist, und wobei die zweite Vielzahl von Kanälen an der zweiten Fläche offen und an der ersten Fläche geschlossen ist, wobei ein erstes katalytisches Material in dem porösen Substrat verteilt ist, wobei eine mikroporöse Membran in der ersten Vielzahl von Kanälen auf einem sich in Längsrichtung erstreckenden ersten Bereich der ersten Vielzahl von inneren Oberflächen bereitgestellt ist, und wobei der erste Bereich sich von der ersten Fläche über 75 % bis 95 % einer Länge ...

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.

Exhaust system for vehicle engines has lean burn probe mounted in inflow knuckle region and brought into exhaust gas contact with exhaust gas flows in all inlet pipes

The exhaust system includes a catalytic converter with lean burn probe (15) mounted in at least one of the inflow knuckle regions (11). The lean burn probe can be brought into exhaust gas contact with the exhaust gas flows in all the inlet pipes (9,10) which make up the inflow knuckle region. Each pipe has in the knuckle region a wall opening (17,18) in which the lean burn probe is mounted to produce the exhaust gas contact.

Oxidationskatalysator für einen magerverbrennenden Verbrennungsmotor

Vorrichtung, die einen mager verbrennenden Verbrennungsmotor, ein Motormanagementmittel und ein Abgassystem zur Behandlung von Abgas des Motors umfasst, wobei das Abgassystem einen ersten Oxidationskatalysator umfasst, der auf einem ersten Wabenmonolithsubstrat angeordnet ist, wobei der erste Oxidationskatalysator auf einem ersten Metalloxidträger geträgertes Platin, der mindestens ein reduzierbares Oxid umfasst, umfasst, wobei der erste Oxidationskatalysator im Wesentlichen frei von Alkalimetallen und Erdalkalimetallen ist, wobei das Motormanagementmittel so angeordnet ist, dass es, wenn es sich in Gebrauch befindet, intermittierend die lambda-Zusammensetzung des mit dem ersten Oxidationskatalysator in Berührung gelangenden Abgases auf eine fette lambda-Zusammensetzung moduliert.

Auspuffvorrichtung eines Motorrades

Ein Motorrad ist mit einem zweimotorigen V-Motor ausgestattet, bei dem vordere und hintere Zylinder in einer V-Form entlang einer Kraftfahrzeug-Vorder- und Rückrichtung angeordnet sind. Eine Auspuffvorrichtung umfasst: eine Katalysatorvorrichtung, die an einer Auspuffstromabwärtsseite eines Sammelteils einer Auspuffrohrleitung des vorderen Zylinders und einer Auspuffrohrleitung des hinteren Zylinders sind angeordnet ist; und eine Verbindungsrohrleitung, mittels der die Auspuffrohrleitung des vorderen Zylinders und die Auspuffrohrleitung des hinteren Zylinders miteinander in Verbindung stehen, und die Verbindungsrohrleitung läuft durch einen Raum zwischen der Auspuffrohrleitung des hinteren Zylinders und der Katalysatoreinrichtung.

Verfahren zum Herstellen eines Doppeltrichters, insbesondere aus Edelstahl, für ein Katalysatorgehäuse

Verfahren zum Herstellen eines Doppeltrichters (4), insbesondere aus Edelstahl, für ein Katalysatorgehäuse (1) insbesondere für Abgasanlagen von Verbrennungskraftmaschinen von Kraftfahrzeugen, gekennzeichnet durch die folgenden Schritte: a) Aufsetzen eines rohrförmigen Teils (14) mit einem Ende auf einen konischen Stempel (15), dessen größter Außendurchmesser mindestens so groß wie der gewünschte Maximaldurchmesser des Doppeltrichters (4) ist und dessen Schräge der gewünschten Schräge des Doppeltrichters (4) entspricht, b) Axiales Aufpressen des Teils (14) auf den Stempel (15), wobei das Teil (14) von einer Seite her auf das gewünschte Maß konisch aufgeweitet wird, c) Abnehmen des Teils (14) von dem Stempel (15), Wenden und Aufsetzen des Teils (14) mit seinem gegenüberliegenden Ende auf den Stempel (15), d) Axiales Aufpressen des Teils (14) auf den Stempel (15), wobei das Teil (14) von seiner anderen Seite her auf das gewünschte Maß aufgeweitet wird.

IC engine exhaust gas after burner - has one catalyst block contg. coarsely grained active material followed by spaced second block contg. finely grained material

The IC exhaust gas afterburner is of the catalysing-and-bypassing type and is pref. bolted directly onto the exhaust manifold. Gas flows through radila holes in a central inlet pipe projecting into the casing into a header space and through an annular catalyser block. The butterfly-type bypass valve is further along the inlet pipe. Both catalysed and bypassed gas flows via a second chamber through a further, full width catalyser block before entering the exhaust pipe. Thickness of the first block is about 40mm, and the second block is 25mm thick. The blocks respectively contain coarse and fine-grained active material.

KATALYSATOREN FÜR DIESELMOTOREN

Aussenbordmotor

Katalytischer Konverter mit zwei oder mehr Wabenkörpern in einem Mantelrohr und Verfahren zu seiner Herstellung

Verfahren und Vorrichtung zum Herstellen eines Wabenkörpers

Katalytischer Konverter für einen Kleinmotor

The present invention relates to a catalytic converter for a small-size engine and a method for the production thereof. In order to cut production costs, a honeycomb shaped body, coated with a catalytically active material made out of at least partially structured metal sheets (5, 6) with exhaust gas conduits (7), is placed in the housing of a silencer located close to the engine in order to enable at least the greater part of the exhaust gas from the engine to flow through the honeycomb body. The honeycomb body is a layered, wound or folded pile of metal sheets (5,6) which is squeezed into the silencer housing (3.1, 3.2, 3.3) with a plastic deformation of at least 10 %, preferably 20-30 % of the conduits (7), whereby said body entirely fills at least a partial volume. The considerable deformation that occurs in part of the conduits (7) also leads to high elastic deformation in the rest of the honeycomb body, thereby guaranteeing the stability of the honeycomb body even in the case of alternating ...

Oxidation catalyst for a lean burn internal combustion engine

Disclosed is a lean-burn internal combustion engine, engine management means and an exhaust system for treating exhaust gas of the engine. The exhaust system comprises an oxidation catalyst disposed on a honeycomb monolith substrate, the catalyst comprising platinum supported on a first metal oxide support, the metal oxide support comprising at least one reducible oxide. The oxidation catalyst is substantially free of alkali metals and alkaline earth metals. The engine management means is arranged to intermittently modulate the air to fuel ratio or lambda composition of the exhaust gas entering the first oxidation catalyst to a fuel rich or low lambda composition and the rich engine mode is used to purge the NOx catalyst. The oxidation catalyst may be a diesel oxidation catalyst.

Diesel oxidation catalyst and exhaust system

Extruded honeycomb catalyst

Process and apparatus for removing sulphur dioxide from flue gas

... SO2 is removed from flue gases by passing them through a reactor having a plurality of independent compartments containing a porous bed of catalyst which accelerates the oxidation of SO2 to SO3. The reactor has duct means for directing the flue gases through the compartments and a means for selectively isolating one or more of the compartments to enable purging gas to be passed into the isolated compartment so as to re-activate the catalyst while passing the flue gases through at least some of the remaining compartments. As shown in Fig. 2, SO2-containing flue gases, after passing through an electrostatic dust precipitator (38), see Fig. 1 (not shown), enter the cylindrical reactor through duct 72 and pass through those radially spaced cells 52 containing catalyst which are not isolated by hood members 82, 84. The cells 52 have highly perforated walls. The treated flue gases leave via duct 74. Hood members 82, 84 of sectorial cross-section rotate about shaft 91 fitted ...

EXHAUST GAS REACTOR

A catalytic converter assembly

EXHAUST SYSTEMS FOR INTERNAL COMBUSTION ENGINES

... 1314504 Purifying IC engine exhaust gases BRITISH LEYLAND MOTOR CORP Ltd 21 Dec 1971 [19 Jan 1971] 2459/71 Heading F1B An exhaust system for an I. C. engine includes a catalytic reactor and injector means whereby air or other oxygen rich gaseous fluid can be fed into at least two regions of the catalytic reactor. Exhaust gases enter a reactor 11 via a pipe 12 and pass successively through compartments 15--19 which are separated by foraminous walls and which contain particulate catalytic material, which may differ from compartment to compartment. An engine-driven air pump feeds a manifold 21 from which pipes 22 to 26 lead to respective compartments, each pipe containing a valve 22a to 26a, the valves being independently adjustable. The air-flow to the compartments is adjusted to optimize the reactions to produce minimum quantities of nitric oxide, ammonia, carbon monoxide and unburnt hydro-carbons.

Zoned diesel oxidation catalyst

An oxidation catalyst for treating an exhaust gas from a diesel engine. The oxidation catalyst comprises a substrate 5 having three washcoat regions 1, 2, 3. A first washcoat region comprises a first platinum group metal (PGM) and a first support material. A second washcoat region, adjacent to the first washcoat region, comprises a second PGM and a second support material. A third washcoat region comprises a third PGM and a third support material. The third washcoat region may be adjacent to the second washcoat region, with each region comprising a respective washcoat zone (figure 1). The third washcoat region may be adjacent to the second washcoat region, with the second washcoat region comprising an overlap between upstream and downstream washcoat layers (figures 3 and 4). The second washcoat region may be disposed or supported on the third washcoat region (figure 2).

An emission control device for an engine

Mounting arrangement for fluid injector of exhaust aftertreatment system

A mounting arrangement for a fluid injector 14, eg a diesel exhaust fluid (DEF) injector, of an exhaust aftertreatment system of an engine includes a first annular member 34 having one end 36 received in the opening of a housing 18 and its opposite end 38 attached to a mixing chamber 46 in the housing 18. A second annular member 40 has one end 44 attached to the first annular member 34; the injector 14 is coupled to the other end 42 of the second annular member with the axis F of the injector 14 inclined at an angle A to the axis M of the mixing chamber 46, eg by means of the ends 42, 44 of the second annular member 40 being inclined to each other. Pressurised atomized fluid, eg reductant, is injected from the outlet 50 of the injector 14 towards the axis M of the mixing chamber 18.

Ruthenium supported on supports having a rutile phase as stable catalysts for NH3-SLIP applications

An ammonia slip catalyst (ASC) comprising a first SCR catalyst, an oxidation catalyst comprising ruthenium or a ruthenium mixture on a support comprising a rutile phase, and a substrate. The ruthenium mixture may also comprise Pt. The catalyst may be a single layer comprising a mixture of the first SCR catalyst and the oxidation catalyst, or a single layer with the first SCR located upstream of the oxidation catalyst, or it may be a bi-layer catalyst with the first SCR as the top layer and the oxidation catalyst as the bottom layer. When the oxidation catalyst further comprises Pt, the Pt may be on the same support or a different support. The first SCR catalyst can be a blend with a Cu-SCR catalyst. Ruthenium can be present from 0.110 wt% relative to the weight of the ASC. The ASC may further comprise a second SCR catalyst, either in a layer over the bi-layer ASC, or upstream to the bi-layer ASC catalyst. The ASC may further comprise a third SCR catalyst which may be an under layer located ...

PROCESS FOR OXIDISING PARTICLES IN DIESEL EXHAUST

Extruded honeycomb catalyst

Exhaust system

An exhaust system for a motor vehicle includes a housing having an inflow funnel defined by an expanding cross sectional area. Received in the housing is an exhaust-gas treatment device which includes a tubular guide element arranged in the inflow funnel and having a curvature with an outer side formed with at least one embossment. The embossment causes a deflection of the exhaust-gas flow and thereby increases a contact time of the exhaust-gas flow with an insert of the exhaust-gas treatment device.

Exhaust Gas Treatment Device

A mounting mat for an exhaust gas treatment device includes a blend of inorganic fibers and organic nanofibrillated fibers. An exhaust gas treatment device includes a housing and a fragile structure mounted within the housing by the mounting mat that is disposed in a gap between the housing and the fragile catalyst support structure. Additionally disclosed are methods of making a mounting mat for an exhaust gas treatment device and for making an exhaust gas treatment device incorporating the mounting mat.

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.

Electric heating catalyst

The present invention is intended to suppress a decrease in insulation resistance between electrodes and a case in an electric heating catalyst (EHC). An EHC ( 1 ) according to the present invention is provided with a heat generation element ( 3 ) that is energized to generate heat thereby to heat a catalyst, a case ( 4 ) that receives the heat generation element therein, an insulating member ( 5 ) that is arranged between the heat generation element ( 3 ) and the case ( 4 ) for insulating electricity, electrodes ( 7 ) that are connected to the heat generation element ( 3 ) through an electrode chamber ( 9 ) which is a space located between an inner wall surface of the case ( 4 ) and an outer peripheral surface of the heat generation element ( 3 ), and a ventilation passage ( 10 ) that ventilates the electrode chamber.

Exhaust Cooler

An internal combustion engine is coupled to an electric power generator. An exhaust manifold for the engine includes an exhaust gas conduit. A housing includes a catalyst in fluid communication with the conduit to receive exhaust produced by the engine. The catalyst is operable to reduce one or more constituents of the exhaust.

Exhaust Injection Muffler

An internal combustion engine is coupled to an electric power generator. An exhaust manifold for the engine includes an exhaust gas conduit. A housing includes a catalyst in fluid communication with the conduit to receive exhaust produced by the engine. The catalyst is operable to reduce one or more constituents of the exhaust.

Mats

A mat for supporting a monolith, the mat comprising one or more first portions comprising fibres at least partially coated with an erosion resistant inorganic (e.g. silica) gel composition or a precursor thereof.

Mixing pipe for scr mufflers

An apparatus for treating exhaust includes a housing having an inlet and an outlet, the housing defining a chamber. The inlet is in fluid communication with a source of exhaust. A mixing tube is connected to the inlet. The mixing tube has at least two branches and a plurality of apertures defined in a wall of the mixing tube. A substrate is disposed between the mixing tube and the outlet. The at least two branches converge at an end section of the mixing tube to form a mixing loop.

Pollution control device and inorganic fiber sheet material with a fused edge

Inorganic fiber mounting and insulating sheet materials for use in pollution control devices with at least one edge of the inorganic fiber sheet material having at least one group of two or more fibers fused together. A pollution control device comprising such a sheet material. A process for cutting at least one section from a sheet containing inorganic fiber material, where the sheet material is suitable for use in a pollution control device. The fibrous sheet material is cut so that the cut edge has at least one group of two or more fibers fused together. A laser beam can be used to cut the desired section out of the inorganic fiber sheet material.

Hydrocarbon Retaining System Configuration for Combustion Engine

Systems, methods, and computer readable storage media are described in which exhaust gas is routed to a hydrocarbon retaining device during starting, and purged to the engine intake manifold. Various alternative approaches are described for controlling operation and diagnosing degradation. Further, various interrelated configurations are described.

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.

Mounting Mat with Flexible Edge Protection and Exhaust Gas Treatment Device Incorporating the Mounting Mat

A mounting mat for an exhaust gas treatment device includes first and second major opposite facing surfaces, leading and trailing edges, and opposite lateral edges. At least a portion of one or both of the opposite lateral edges includes an edge protectant that protects the mounting mat against erosion from hot gases encountered during the normal operation of the exhaust gas treatment device. The edge protectant remains flexible after it has been applied to the mounting mat and substantially dried. Also disclosed is an exhaust gas treatment device that includes a housing and a fragile structure mounted within the housing by the mounting mat having the edge protectant deposited thereon. Additionally disclosed are methods of making the mounting mat and an exhaust gas treatment device.

Exhaust gas treatment device for use near an engine and motor vehicle having the device

An exhaust gas treatment device includes at least a housing and a second exhaust gas treatment unit which is disposed at a distance from the housing and extends into the housing. The housing has an opening that is disposed laterally relative to the second exhaust gas treatment unit and extends laterally at least across 50% of the second exhaust gas treatment unit which extends into the housing. A motor vehicle having the exhaust gas treatment device is also provided.

Non-woven mat and pollution control device with the same

Non-woven layer having a first and second, generally opposed major surfaces, a length with first and second, generally opposed edges, wherein the non-woven layer comprising inorganic fibers and having a binder content not greater than 7 percent by weight, based on the total weight of the non-woven layer, wherein there is at least one line of stitching. The non-woven layer is useful, for example, for mounting mats for pollution control devices.

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.

Self-supporting insulating end cone liner and pollution control device

The invention provides a flexible and self-supporting insulating end cone liner comprising resilient and compressible intumescent or non-intumescent material molded into a single, continuous piece having a three dimensional cone shape, with the insulating material comprising inorganic fibers and an organic binder, and a pollution control device that includes such an end cone liner.

Exhaust Treatment Device for an Internal Combustion Engine

An internal combustion engine has an exhaust gas treatment system comprises a multiple piece canister having a first canister portion and a second canister portion, a conical portion extending axially from an end of the first canister portion including a wall that is inclined inwardly, towards a central axis of the multiple piece canister, a funnel portion extending axially from an end of the second canister portion including a wall that is inclined outwardly, away from the central axis of the multiple piece canister, the wall of the conical portion and the wall of the funnel portion defining an insulation gap therebetween and an annular band of insulating and cushioning mat material disposed under compression by the walls within the insulation gap.

Exhaust Flow Distribution Device

The present disclosure relates to an diesel exhaust treatment device including a main body having a central longitudinal axis that extends between first and second ends of the main body. A catalyzed substrate is positioned within an interior of the main body. A side inlet is positioned at a side of the main body for directing exhaust gas into the interior of the main body. A flow distribution element is positioned within the interior of the main body at a location between the side inlet and an upstream face of the substrate. The flow distribution element extends across a direction of exhaust flow through the main body and is mounted at a side of the main body that is opposite the side inlet.

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.

Electric heating type catalyst and a method for manufacturing the same

Electricity is suppressed from flowing to a case ( 2 ) of an electric heating type catalyst ( 1 ). The electric heating type catalyst ( 1 ) is provided with a heat generation element ( 4 ) to be electrically energized to generate heat, the case ( 2 ) in which the heat generation element ( 4 ) is received, and a mat ( 3 ) inserted between the heat generation element ( 4 ) and the case ( 2 ) for insulating electricity, wherein the case ( 2 ) is formed into double pipes ( 24 ) at an upstream side and downstream side of the heat generation element ( 4 ), respectively, and an inner pipe ( 28 ) of each of the double pipes ( 24 ) is formed such that it is in contact at an upstream side or downstream side one end ( 25 ) thereof with an outer pipe ( 27 ) of each double pipe ( 24 ), with a gap being formed between the inner pipe ( 28 ) and the outer pipe ( 27 ) of each double pipe ( 24 ) at an upstream side or downstream side other end ( 26 ) of the inner pipe ( 28 ), and an insulating layer ( 6 ) for insulating electricity is provided on a surface of the case ( 2 ) from the mat ( 3 ) to the other end ( 26 ) including a range surrounded by the outer pipe ( 27 ) and the inner pipe ( 28 ) of each double pipe ( 24 ).

Electrically-heated catalytic converter

An electrically-heated catalytic converter comprises a catalyst support which produces heat when electric current is applied, a holding mat made of an electrical insulating material, the holding mat being provided so as to cover an outer circumference of the catalyst support, and a case which houses the catalyst support and holds the catalyst support via the holding mat. The catalytic converter treats gas flowing in the case by a catalyst supported on the catalyst support. The holding mat has a water-absorbing property. An insulation layer made of an electrical insulating material is provided between the case and the holding mat.

Catalytic converter apparatus

A catalytic converter apparatus for use in an exhaust system of an internal combustion engine includes a housing having a gas inlet and a gas outlet, and at least one catalytic substrate element disposed in the housing. The at least one substrate element is divided into a plurality of zones or sections, the zones at least partially separated from one another to inhibit heat flow. The zones can be at least partially separated with walls. The walls can include insulating material for reducing the mobility of heat radially outwardly. Each of the zones defines a generally separate flow passage connecting the inlet and outlet in fluid communication. The apparatus can heat more rapidly from a cold start compared with conventional catalytic converters.

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.

Exhaust treatment device with integral mount

An exhaust treatment device includes an insulation material positioned between an inner shell and an outer shell. An inlet tube has an end in communication with a cavity defined by the inner shell. A substrate for treating engine exhaust is positioned within the inner shell. A metal mounting ring is positioned between the inner and outer shells and includes a mounting provision for receipt of a fastener.

DEVICE FOR PARTICLE SEPARATION IN AN EXHAUST-GAS RECIRCULATION SYSTEM AND MOTOR VEHICLE HAVING THE DEVICE

A device for separating particles from an exhaust gas of an internal combustion engine includes at least a pot with a base having a multiplicity of openings, at least one nonwoven layer positioned on the base of the pot, and a cover. The at least one nonwoven layer is positioned between the base and the cover. A motor vehicle having the device is also provided. 1. A device for separating particles from an exhaust gas of an internal combustion engine , the device comprising:a pot having a base with a multiplicity of openings formed therein;a cover; andat least one nonwoven layer disposed at said base and positioned between said base and said cover.2. The device according to claim 1 , wherein said cover is wrapped around an outside of said pot.3. The device according to claim 1 , wherein at least one of said base or said cover has a curved shape.4. The device according to claim 1 , wherein said at least one nonwoven layer is catalytically coated.5. The device according to claim 1 , wherein said at least one nonwoven layer is in the form of a fabric.6. The device according to claim 1 , wherein said base has at least one central first zone and a second zone surrounding said at least one central first zone claim 1 , and said first and second zones have differently configured openings.7. A motor vehicle claim 1 , comprising an exhaust-gas recirculation system equipped with a device according to . This is a continuation, under 35 U.S.C. §120, of copending International Application No. PCT/EP2011/060399, filed Jun. 22, 2011, which designated the United States; this application also claims the priorities, under 35 U.S.C. §119, of German Patent Application Nos. DE 10 2010 025 284.0, filed Jun. 28, 2010 and DE 10 2010 050 393.2, filed Nov. 3, 2010; the prior applications are herewith incorporated by reference in their entirety.The present invention relates to a device for separating, depositing, intercepting or capturing particles which are conducted through an exhaust-gas ...

Arrangement of a Catalytic Converter in an Exhaust System

An arrangement of a catalytic converter in an exhaust system of an internal combustion engine which can be operated with fuel containing manganese is provided, wherein the catalytic converter is arranged in the exhaust tract in an exhaust gas flow path from the internal combustion engine. A sacrificial disk, which is permeable to exhaust gas, is arranged in the exhaust tract upstream of the catalytic converter in the flow direction of the exhaust gas. When the exhaust gas back pressure becomes too high for normal internal combustion engine operation owing to manganese deposits, the relatively inexpensive sacrificial disk can be replaced other than exchanging and/or cleaning the relatively expensive catalytic converter.

Apparatus and method for purifying exhaust gases for combustion engines

An engine exhaust gas purification device comprising control unit having successively arranged switching device (), counter-current heat exchanger () and at least one exhaust gas purification component (). The switching device () has a first position where a flow path () of the exhaust gas to the exhaust gas purification component () is opened and a second position where a flow path () of the exhaust gas to the exhaust gas purification component () is blocked and the exhaust gas flows along a further flow path () where the exhaust gas is heated and conveyed, via a flow path () of the exhaust gas purification component (), and exits the exhaust gas purification unit () through outlet channels () of the counter-current heat exchanger (). The switching device, the exhaust gas purification component, the counter-current heat exchanger and the flow paths are integrated in a compact exhaust gas treatment unit. 114-. (canceled)15. A device for exhaust gas purification for internal combustion engines , the device comprising:a control unit,{'b': '1', 'a switching device (),'}{'b': '3', 'a counter-current heat exchanger (), and'}{'b': '2', 'at least one exhaust gas purification component (),'}{'b': 1', '2', '3, 'wherein the switching device (), the at least one exhaust gas purification component () and the counter-current heat exchanger () are arranged in succession,'}{'b': 1', '1', '6', '2', '1', '6', '2', '7', '8', '3', '20', '2', '5', '4', '3, 'the switching device () is continuously or abruptly adjustable between first and second positions, and in the first position of the switching device (), a flow path () of the exhaust gas to the at least one exhaust gas purification component () is opened, and in the second position of the switching device (), a flow path () of the exhaust gas to the at least one exhaust gas purification component () is blocked so that the exhaust gas flows along a further flow path () in inlet channels () of the counter-current heat exchanger (), ...

ELECTROCHEMICAL CATALYSIS SYSTEM

The present invention relates to an electrocatalytic system for the joint treatment of oxidizing polluting entities of the NOtype and reducing polluting entities of the hydrocarbons HC or CO type present in a gas to be purified, in particular an exhaust gas resulting from a combustion engine, said system comprising: 2. The electrocatalytic system of claim 1 , wherein claim 1 , in formula (I) claim 1 , y is from 0.1 to 0.3 and z=0.3. The electrocatalytic system of claim 1 , wherein the oxide which conducts ions and electrons has formula CeOGd.4. The electrocatalytic system of claim 1 , wherein claim 1 , in formula (I) claim 1 , z is greater than 0.5. The electrocatalytic system of claim 4 , wherein the oxide which conducts ions and electrons has formula CeOYTi claim 4 , wherein y is from 0.1 to 0.3 and z is from 0.01 to 0.1.6. The electrocatalytic system of claim 1 , wherein the compound E comprises oxygen holes and wherein a portion of Ce cations of the crystal lattice is converted into Ce cations.7. The electrocatalytic system of claim 6 , wherein the proportion of Ce ions claim 6 , as given by the Ce/Ce ratio claim 6 , is between 25 and 75%.8. The electrocatalytic system of claim 1 , wherein claim 1 , in formula (I) claim 1 , x is from 0.1 to 0.4.9. The electrocatalytic system of claim 1 , wherein the oxide which conducts ions and electrons exhibits a specific surface of from 0.5 to 100 m/g.10. A structure configured to decontaminate and/or filter a gas comprising gaseous pollutants and optionally comprising solid particles claim 1 , the structure comprising a porous inorganic material comprising a coating comprising the catalytic system of .11. The structure of claim 10 , comprising a monolithic honeycomb block comprising a collection of adjacent channels with axes parallel to one another separated by walls claim 10 , the open porosity of which is greater than 30% claim 10 , wherein the channels are sealed by plugs at one or other of their ends in order to ...

EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE

In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve () and an exhaust purification catalyst () are arranged. The concentration of hydrocarbons which flows into the exhaust purification catalyst () is made to vibrate by within a predetermined range of amplitude of a 200 ppm or more and within a predetermined range of period of 5 second or less, whereby the NOwhich is contained in exhaust gas is reduced at the exhaust purification catalyst (). At this time, the nitrogen-containing intermediate which is produced in the NOreduction process is exhausted from the exhaust purification catalyst (). An intermediate purification catalyst () for removal of the exhausted nitrogen-containing intermediate is arranged downstream of the exhaust purification catalyst (). 1. An exhaust purification system of an internal combustion engine in which an exhaust purification catalyst for reacting NOcontained in exhaust gas and reformed hydrocarbons is arranged inside of an engine exhaust passage , a precious metal catalyst is carried on an exhaust gas flow surface of the exhaust purification catalyst and a basic exhaust gas flow surface part is formed around the precious metal catalyst , the exhaust purification catalyst has a property of reducing the NOwhich is contained in exhaust gas if a concentration of hydrocarbons flowing into the exhaust purification catalyst is made to vibrate within a predetermined range of amplitude and within a predetermined range of period and has a property of being increased in storage amount of NOwhich is contained in exhaust gas if the vibration period of the hydrocarbon concentration is made longer than the predetermined range , at the time of engine operation , to reduce the NOwhich is contained in exhaust gas at the exhaust purification catalyst , the concentration of hydrocarbons flowing into the exhaust purification catalyst is made to vibrate within said predetermined range of amplitude and within said ...

BETA-SPODUMENE-CORDIERITE COMPOSITION, ARTICLE, AND METHOD

Porous spodumene-cordierite honeycomb bodies of high strength but low volumetric density, useful for the manufacture of close-coupled engine exhaust converters, gasoline engine particulate exhaust filters, and NOx integrated engine exhaust filters, are provided through the reactive sintering of batches comprising sources of magnesia, alumina and silica together with a lithia source, such as a spodumene or petalite ore. 1. A method for making a porous ceramic article comprising the steps of:mixing inorganic batch ingredients with a liquid and an organic binder to form a plasticized batch mixture, the inorganic batch ingredients comprising sources of magnesia, silica, alumina and lithia, wherein the lithia source comprises one or more lithium-containing compounds, wherein the magnesia source comprises one or more magnesium-containing compounds, and wherein the magnesia source constitutes less than 25 wt % of the inorganic batch ingredients;forming the plasticized batch mixture into a green body; andheating the green body to a top temperature of 1180 to 1260° C. for a time sufficient to convert the green body into the porous ceramic article, the article being comprised of a principal phase of beta-spodumene and a minor phase of cordierite.2. The method of wherein the beta-spodumene and cordierite phases together constitute more than 80% of the porous ceramic article.3. The method of wherein the porous ceramic article contains less than 4 wt % glass.4. The method of wherein the lithia source is selected from the group consisting of spodumene claim 1 , petalite claim 1 , and combinations thereof.5. The method of wherein the magnesia source is selected from the group consisting of MgO claim 1 , magnesium hydroxide claim 1 , talc claim 1 , and combinations thereof.6. The method of wherein the plasticized batch mixture further comprises a pore forming agent.7. The method of wherein the inorganic batch ingredients comprise α-spodumene in an amount of at least 40 wt % with ...

Engine with exhaust treatment device and attachment method for exhaust treatment device

An engine with an exhaust treatment device ( 2 ) wherein a rotation moment of a side support stay ( 12 ) is generated by a load of a side portion ( 50 ) received by side support stay fastening tool ( 13 ) via an edge portion ( 21 ) of a cutout groove ( 20 ). As a result, a load of the side portion ( 50 ) of the exhaust treatment device ( 2 ) can be supported by the side support stay ( 12 ). A one-side temporary mount portions ( 22 ) is provided in a one-side support stay ( 10 ). The one-side support stay ( 10 ) can be temporarily mounted on the one-side temporary mount portions ( 22 ).

REDUCING AGENT AQUEOUS SOLUTION MIXING DEVICE AND EXHAUST GAS POST-TREATMENT DEVICE

A reducing agent aqueous solution mixing device includes an exhaust pipe, an injector, a mixing pipe and an inner pipe. The exhaust pipe includes an elbow part having a curved portion, and a linear part disposed on the downstream side of the elbow part. The injector is disposed outside the curved portion and injects the reducing agent aqueous solution towards the linear part. The mixing pipe is disposed inside the elbow part to enclose a surrounding of the reducing agent aqueous solution injected from the injector, and includes a plurality of openings on an outer peripheral surface thereof. The inner pipe is disposed on the downstream side of the mixing pipe and spaced apart from an outlet portion of the mixing pipe and from an inner wall of the linear part, and allows the exhaust gas to flow through the inside thereof and the outer periphery thereof. 1. A reducing agent aqueous solution mixing device for adding a reducing agent aqueous solution to an exhaust gas , the reducing agent aqueous solution mixing device being adapted to be disposed between a filter for trapping particulate substance in the exhaust gas and a reducing catalyst unit for reducing and purifying nitrogen oxide in the exhaust gas , the reducing agent aqueous solution mixing device comprising:an exhaust pipe including an elbow part having a curved portion, and a linear part disposed on an exhaust downstream side of the elbow part;an injector disposed outside the curved portion of the elbow part, the injector being configured to inject the reducing agent aqueous solution into the elbow part towards the linear part;a mixing pipe having a plurality of openings on an outer peripheral surface thereof, the mixing pipe being disposed inside the elbow part to enclose a surrounding of the reducing agent aqueous solution injected from the injector; andan inner pipe disposed on an exhaust downstream side of the mixing pipe and spaced apart from an exhaust downstream side outlet portion of the mixing pipe in ...

Electrically heated catalyst

Electricity is suppressed from flowing to a case ( 4 ) of an electrically heated catalyst ( 1 ). Provision is made for a heat generation element ( 2 ) adapted to be electrically energized to generate heat, the case ( 4 ) in which the heat generation element ( 2 ) is contained, a mat ( 5 ) arranged between the heat generation element ( 2 ) and the case ( 4 ) to insulate electricity and at the same time to support the heat generation element ( 2 ), an electrode ( 6 ) connected to the heat generation element ( 2 ) from outside of the case ( 4 ), an insulation part ( 7 ) to plug a gap between the case ( 4 ) and the electrode ( 6 ), an electrode chamber ( 8 ) which is a space formed around the electrode ( 6 ) at an inner side of the case ( 4 ) and at an outer side of the heat generation element ( 2 ), and which is formed by providing a gap between the electrode ( 6 ) and the mat ( 5 ), and a partition part ( 9 ) arranged in the electrode chamber ( 8 ) at an upstream side of the electrode ( 6 ) in a direction of flow of an exhaust gas, in such a manner that the exhaust gas flowing through the interior of the electrode chamber ( 8 ) impinges against the partition part ( 9 ).

Electrically heated catalyst

Electricity is suppressed from flowing through a case of an electrically heated catalyst. For this purpose, the case for accommodating a heat generating element includes a tubular portion which is formed in parallel to a central axis, an inlet portion which is provided on the upstream side from the tubular portion and which has an inner diameter smaller than that of the tubular portion, an inclined portion which connects the tubular portion and the inlet portion, and an introducing portion which extends from a connected portion between the inlet portion and the inclined portion toward inside of the case and which is curved so that a center of curvature is positioned at the outside; and an inner tube interposed by a mat for supporting the heat generating element includes a tubular portion which is formed in parallel to a central axis, and an inclined portion which is provided on the upstream side from the tubular portion, which has inner diameters that are decreased on the more upstream side, and which is curved.

Method for encasing a body of an exhaust gas system

A method for encasing a body of an exhaust gas system with a housing which is wound around the body. Using a winding method, the body is placed in a loop formed by a belt-shaped conveyor element that can be driven in a conveyor device, wherein the conveyor element is seated against the outer casing face at a wrapping angle u of at least 270 degrees. Starting with a first edge, the metal strip is then introduced in a conveyor device between the body and the conveyor element, is drawn into the gap between the body and the conveyor element and is bent around the body until the body is encased at least twice by the metal strip.

Annular Heat Exchanger

An annular heat exchanger for cooling hot gases comprises an inner shell, an intermediate shell and an outer shell. Where the heat exchanger is integrated with a catalytic converter for treatment of hot exhaust gases in a motor vehicle, the inner shell contains a catalyst for treatment of the exhaust gases. Inner and outer gas flow passages are provided between the shells, and a coolant flow passage is provided, either on the outer surface of the outer shell, or inbetween the intermediate and outer shells. The exhaust gases change direction twice as they pass through the heat exchanger, and the annular structure of the heat exchanger provides a large surface area, and a large flow section, relative to volume, and thereby provides effective heat exchange without significantly increasing space requirements.

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.

Silicon carbide ceramic and honeycomb structure

Provided is a silicon carbide ceramic having a small amount of resistivity change due to temperature change and being capable of generating heat by current application; and containing silicon carbide crystals having 0.1 to 25 mass % of 4H—SiC silicon carbide crystals and 50 to 99.9 mass % of 6H—SiC silicon carbide crystals, preferably having a nitrogen content of 0.01 mass % or less, more preferably containing two or more kinds of silicon carbide particles containing silicon carbide crystals and silicon for binding these silicon carbide particles to each other and having a silicon content of from 10 to 40 mass %.

Honeycomb structure comprising a cement skin composition with crystalline inorganic fibrous material

Disclosed is a honeycomb support structure comprising a honeycomb body and an outer layer or skin formed of a cement that includes an inorganic filler material having a first coefficient of thermal expansion from 25° C. to 600° C. and a crystalline inorganic fibrous material having a second coefficient of thermal expansion from 25° C. to 600° C.

Spin formed catalyst

A catalytic device and method for forming a catalytic device are described. The devices and methods described can be used for emissions systems in heavy duty diesel engines. In particular, a method of spin forming a catalytic device generally includes disposing a mat about an outer surface of a catalyst substrate and inserting the catalyst substrate and mat inside a shell. The mat is between the shell and the catalyst substrate. The shell, catalyst substrate, and mat can be spin formed into at least a generally elliptical shape but generally other than a circle shape.

Production method for exhaust gas-purifying catalyst and motor vehicle

A method for producing an exhaust gas purifying catalyst according to the present invention includes step (a) of preparing a metal oxide support containing zirconium; step (b) of preparing a solution containing rhodium; and step (c) of adding the metal oxide support prepared in the step (a), and ammonium carbonate, ammonium hydrogencarbonate or ammonia water, to the solution prepared in the step (b) to obtain the solution having a pH adjusted to a range of 3.0 or higher and 7.5 or lower. The present invention provides a method capable of producing an exhaust gas purifying catalyst including a metal oxide support containing zirconium and rhodium of a minute particle size which is supported on the metal oxide support at a high degree of dispersion.

Exhaust system for variable cylinder engine

An exhaust system for a variable cylinder engine for assuring purification of exhaust gas without increasing the number of catalysts and an intake system for purifying blow-by gas. The exhaust system includes an activation side exhaust pipe connected to an activation cylinder group that operates normally. A deactivation side exhaust pipe is connected to a deactivation cylinder group wherein fuel supply is stopped under a particular condition. A gathering section is connected to downstream ends of the activation side exhaust pipe and the deactivation side exhaust pipe with a sub-catalyst disposed in the activation side exhaust pipe and a main catalyst disposed at the gathering section. The main catalyst is formed wherein gas passing therethrough is partitioned into flows independent of each other in a flow path direction. The activation side exhaust pipe and the deactivation side exhaust pipe are connected in a mutually independent state to the main catalyst.

CATALYST CONVERTER DEVICE FOR PURIFYING EXHAUST GAS AND SADDLE-RIDE TYPE VEHICLE

A catalyst converter having a retaining mat with a thickness wherein the apparent density during assembling becomes 0.25 g/cmor more and less than 0.51 g/cmand the outside diameter D1 of a catalyst retainer is set according to interference of the retaining mat in passing through a press-in tool and interference of the retaining mat after being pressed into a retaining tube. The retaining mat is formed of a non-expandable inorganic fiber sheet. A pressing force moves the catalyst retainer in the axial direction with respect to the retaining tube while the catalyst converter device is used with the length L2 along the longitudinal direction of the catalyst retainer in the retaining mat wound around the catalyst retainer being set longer than the winding diameter D1 of the retaining mat around the catalyst retainer so that a retaining force R greater than the pressing force F can be secured. 1. A catalyst converter device for purifying exhaust gas with a catalyst retainer having a catalyst carried by a ceramics honeycomb carrier of a cylindrical shape and retained by a metal tubular member covering the outer part of the catalyst retainer through a retaining mat , comprising:{'sup': 3', '3, 'b': '1', 'a thickness of the retaining mat is set wherein the apparent density of the retaining mat during assembling becomes 0.25 g/cmor more and less than 0.51 g/cmand the outside diameter (D) of the catalyst retainer is set according to an interference of the retaining mat when the retaining mat wound around the catalyst retainer passes through a press-in tool that presses-in the catalyst retainer to the metal tubular member and an interference of the retaining mat after being pressed into the metal tubular member within a range that does not exceed a predetermined single body allowable strength of the catalyst retainer;'}said retaining mat being formed of a non-expandable inorganic fiber sheet;a catalyst retainer pressing force for moving the catalyst retainer in an axial ...

Exhaust Gas System

An exhaust gas system of an internal combustion engine, in particular for a vehicle, includes an exhaust gas conveying duct, at least one insert disposed in the exhaust gas conveying duct for purifying the exhaust gas, an injection system disposed upstream of the insert in the flow path and a turbuliser disposed between the injection system and the insert. A flow rectifier is provided in the exhaust gas conveying duct between the turbuliser and the insert. 1. An exhaust gas system of an internal combustion engine , comprising:an exhaust gas conveying duct;at least one insert, disposed in the exhaust gas conveying duct, for cleaning exhaust gas from the internal combustion engine;an injection system, disposed upstream of the insert in a flow path of the exhaust gas;a turbulizer, disposed between the injection system and the insert; anda flow rectifier disposed in the exhaust gas conveying duct between the turbulizer and the insert.2. The exhaust gas system according to claim 1 , wherein the flow rectifier is disposed directly upstream of the insert.3. The exhaust gas system according to claim 2 , wherein a cone is disposed in the exhaust gas conveying duct claim 2 , the exhaust gas conveying duct emptying claim 2 , between the flow rectifier and the insert claim 2 , into the cone.4. The exhaust gas system according to claim 1 , wherein a cone is disposed in the exhaust gas conveying duct claim 1 , the exhaust gas conveying duct emptying claim 1 , between the flow rectifier and the insert claim 1 , into the cone.5. The exhaust gas system according to claim 3 , wherein the cone is disposed directly upstream of the insert and extends with its longitudinal axis obliquely to a longitudinal axis of the insert.6. The exhaust gas system according to claim 4 , wherein the cone is disposed directly upstream of the insert and extends with its longitudinal axis obliquely to a longitudinal axis of the insert.7. The exhaust gas system according to claim 1 , wherein the flow ...

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.

Coaxial Flow Injector

An injector for injecting a reagent includes an axially translatable valve member positioned within a housing. An electromagnet is positioned within the housing and includes a coil of wire positioned proximate the valve member such that the valve member moves between a seated position and an unseated position relative to an orifice in response to energizing the electromagnet. A connector coupled to the housing includes an inlet tube concentrically aligned with and surrounding a return tube. The inlet tube is adapted to receive pressurized reagent from a source of reagent. The return tube is adapted to return reagent to the source. 1. An injector for injecting a reagent , comprising:a housing;an axially translatable valve member positioned within the housing;an electromagnet positioned within the housing and including a coil of wire positioned proximate the valve member, wherein the valve member moves between a seated position and an unseated position relative to an orifice in response to energizing the electromagnet; anda connector coupled to the housing, the connector including an inlet tube concentrically aligned with and surrounding a return tube, the inlet tube being adapted to receive pressurized reagent from a source of reagent, the return tube being adapted to return reagent to the source.2. The injector of claim 1 , wherein the connector includes a plurality of webs interconnecting the inlet tube and the return tube.3. The injector of claim 2 , wherein the webs are positioned inside of the inlet tube and radially extend between the inlet and return tubes.4. The injector of claim 3 , wherein portions of the inlet and return tubes extend perpendicular to an axis about which the valve member translates.5. The injector of claim 1 , wherein reagent simultaneously flows in a first direction through the inlet tube and in a second opposite direction through the return tube when the valve member is in the seated position.6. The injector of claim 1 , further including ...

MOUNTING MEMBER FOR POLLUTION CONTROL ELEMENT, MANUFACTURING METHOD THEREOF, AND POLLUTION CONTROL DEVICE

A mounting member that can sufficiently suppress scattering of inorganic fiber material when a pollution control element is assembled in a casing, and that can maintain sufficiently high contact pressure between the inner surface of the casing and the pollution control element, even after the organic binder has combusted. The mounting member of the present invention is for wrapping and mounting a pollution control element () in a casing (), and provides a mat () made from inorganic fiber material, and an aggregated substance () containing an organic binder and inorganic fine particles that is impregnated throughout most of the mat (). 1. A mounting member for wrapping and mounting a pollution control element in a casing of a pollution control device , comprising:a needle punched mat having inorganic fiber material; andan aggregated substance containing aggregates of an organic binder and inorganic fine particles, which aggregates are impregnated throughout most of the needle punched mat,wherein the mat is impregnated with the aggregates after the mat is needle punched.2. The mounting member according to claim 1 , wherein the organic binder is acrylic latex having glass transition temperature (Tg) of 15° C. or less.3. The mounting member according to claim 1 , wherein the total content of the organic binder in the mat is in the range of greater than 0 up to and including 5% by weight.4. The mounting member according to claim 1 , wherein the inorganic particles are made using at least one material selected from the group consisting of metal-oxide claim 1 , nitride claim 1 , carbide and combinations thereof.5. The mounting member according to claim 1 , wherein the inorganic fine particles have an average particle diameter of 1 micrometer or less.6. The mounting member according to claim 1 , wherein each aggregate of the aggregated substance has an average particle diameter of 1 micrometer or more.7. A pollution control device comprising:a casing,a pollution control ...

ELECTRIC HEATING CATALYST

The electricity is suppressed from flowing through a case () of an electric heating catalyst (). The electric heating catalyst () comprises a heat generating element () which generates heat by applying electricity; a case () which accommodates the heat generating element (); an inner tube () which is provided between the heat generating element () and the case (); a mat () which is provided between the heat generating element () and the inner tube () and between the inner tube () and the case () and which insulates the electricity; and an electrode () which is connected to the heat generating element () and which supplies an electric power to the heat generating element (); wherein an insulating layer (), which insulates the electricity, is formed on a surface of the inner tube (); and the insulating layer () is formed so that a portion, which is disposed on an inner circumferential surface side (), is thinner than a portion which is disposed on an outer circumferential surface side () of the inner tube. 1. An electric heating catalyst comprising:a heat generating element which generates heat by applying electricity;a case which accommodates the heat generating element;an inner tube which is provided between the heat generating element and the case;a mat which is provided between the heat generating element and the inner tube and between the inner tube and the case and which insulates the electricity; andan electrode which is connected to the heat generating element and which supplies an electric power to the heat generating element, wherein:an insulating layer, which insulates the electricity, is formed on a surface of the inner tube; andthe insulating layer is thin at a portion which is disposed on an inner circumferential surface side as compared with a portion which is disposed on an outer circumferential surface side of the inner tube.2. An electric heating catalyst comprising:a heat generating element which generates heat by applying electricity;a case which ...

SILICON CARBIDE MATERIAL, HONEYCOMB STRUCTURE, AND ELECTRIC HEATING TYPE CATALYST CARRIER

A silicon carbide material according to the present invention includes a substrate containing, as a main component, silicon carbide or containing, as main components, silicon carbide and metallic silicon, and a film covering at least a portion of the surface of the substrate. The film contains, as a main component, a phase including at least four elements: lithium (Li), aluminum (Al), silicon (Si), and oxygen (O). One example of such a silicon carbide material includes a substrate having a structure in which silicon carbide particles are bonded by metallic silicon, and a lithium aluminosilicate film covering at least a portion of the surface of the silicon carbide particles. Such a silicon carbide material can be used for a DPF, an electric heating type catalytic converter, or the like. 1. A silicon carbide material , including:a substrate containing, as a main component, silicon carbide or containing, as main components, silicon carbide and metallic silicon, anda film covering at least a portion of the surface of the substrate,wherein the film contains, as a main component, a phase including at least four elements: lithium (Li), aluminum (Al), silicon (Si), and oxygen (O).2. The silicon carbide material according to claim 1 , wherein the film does not contain potassium.3. The silicon carbide material according to claim 1 , wherein the film contains a lithium aluminosilicate.4. The silicon carbide material according to claim 3 , wherein the lithium aluminosilicate is spodumene.5. The silicon carbide material according to claim 1 , wherein the substrate has a structure in which silicon carbide particles are bonded by metallic silicon.6. The silicon carbide material according to claim 1 , wherein the substrate has a porosity of 20% to 70%.7. The silicon carbide material according to claim 1 , wherein the film has the maximum thickness of 2 to 102 μm.8. The silicon carbide material according to claim 1 , wherein the film has the film weight ratio of 4.1% to 58.3% by ...

CATALYST COMPOSITION

A catalyst composition comprises a mixed metal catalyst which comprises unalloyed palladium and palladium-gold alloy disposed on a support, wherein the palladium-gold alloy is enriched in gold and at least one promoter in which said promoter comprises at least one reducible metal oxide. 1. A catalyst composition comprising a mixed metal catalyst which comprises unalloyed palladium and palladium-gold alloy disposed on a support , wherein the palladium-gold alloy is enriched in gold and at least one promoter in which said promoter comprises at least one reducible metal oxide.2. A catalyst composition according to claim 1 , wherein the atomic ratio of Pd:Au in the mixed metal catalyst is from 100:1 to 1:100.3. A catalyst composition according to claim 1 , wherein the weight ratio of Pd:Au in the mixed metal catalyst is >1:1.4. A catalyst composition according to claim 1 , wherein the amount of palladium and gold in the mixed metal catalyst is from 0.5-10 wt %.5. A catalyst composition according to claim 1 , wherein the at least one reducible metal oxide is at least one oxide of manganese claim 1 , iron claim 1 , tin claim 1 , copper claim 1 , cobalt claim 1 , titanium and cerium.6. A catalyst composition according to claim 5 , wherein the at least one reducible metal oxide is at least one oxide of iron and cerium.7. A catalyst composition according to claim 6 , wherein the at least one reducible metal oxide is ceria.8. A catalyst composition according to claim 1 , wherein the at least one promoter is the support for the mixed metal catalyst.9. A catalyst composition according to claim 8 , wherein the promoter and support is ceria.10. A catalyst composition according to claim 8 , wherein the promoter and support is a mixed oxide or composite oxide of particulate ceria with alumina.11. A catalyst composition according to claim 1 , wherein the support is alumina claim 1 , magnesia claim 1 , silica-alumina claim 1 , zirconia claim 1 , a zeolite or a mixture claim 1 , ...

Oxidation catalyst for a lean burn internal combustion engine

An apparatus is disclosed. The apparatus comprises a lean-burn internal combustion engine, engine management means and an exhaust system for treating exhaust gas of the engine. The exhaust system comprises a first oxidation catalyst disposed on a first honeycomb monolith substrate. The first oxidation catalyst comprises platinum supported on a first metal oxide support comprising at least one reducible oxide, and is substantially free of alkali metals and alkaline earth metals. The engine management means is arranged, when in use, intermittently to modulate the lambda composition of the exhaust gas entering the first oxidation catalyst to a rich lambda composition.

Multiple Skewed Channel Bricks Mounted In Opposing Clocking Directions

A catalytic converter for use in motor vehicle exhaust systems includes a housing and a catalytic substrate disposed in the housing. The housing includes a central shell fixed to an inlet end cone and an outlet end cone. The catalytic substrate includes a primary body section is disposed in an internal chamber and has a plurality of skewed flow channels through which the hot exhaust gas flows. The skewed flow channels create turbulent flow to assist in improved light-off and improved purification efficiency.

HONEYCOMB STRUCTURE

A honeycomb structure includes a honeycomb structure section having porous partition walls, and an outer peripheral wall; and a pair of electrode sections, each of the pair of electrode sections are formed into a band shape, the one electrode section is disposed on an opposite side to the other electrode section via a center O of the honeycomb structure section, a shape of the cells is a quadrangular shape or a hexagonal shape, and in the cross section perpendicular to the extending direction of the cells and including the electrode sections, a straight line parallel to a diagonal line connecting two facing vertexes of the one cell and passing the center of the honeycomb structure section is a reference line L, and each of the electrode sections is disposed at a position to intersect with the at least one reference line L. 1. A honeycomb structure comprising a tubular honeycomb structure section having porous partition walls with which a plurality of cells extending from one end surface to the other end surface are formed to become through channels of a fluid , and an outer peripheral wall positioned in the outermost periphery; and a pair of electrode sections arranged on a side surface of the honeycomb structure section ,wherein an electrical resistivity of the honeycomb structure section is from 1 to 200 Ωcm,each of the pair of electrode sections is formed into a band shape extending in a cell extending direction of the honeycomb structure section,in a cross section perpendicular to the cell extending direction, the one electrode section in the pair of electrode sections is disposed on an opposite side to the other electrode section in the pair of electrode sections via the center of the honeycomb structure section,a shape of the cells in the cross section perpendicular to the cell extending direction is a quadrangular shape or a hexagonal shape, andin the cross section perpendicular to the cell extending direction and including the electrode sections, a straight ...

EXHAUST GAS PURIFYING APPARATUS

An exhaust gas purifying apparatus which can reduce or prevent the shifting of a honeycomb catalyst member relative to a cushion member, even if hard vibrations are applied to the exhaust gas purifying apparatus, for example, during operation of a vehicle. In some embodiments, there can be no increase of the radial pressure of the cushion member applied to the honeycomb catalyst member. In some embodiments, an exhaust gas purifying apparatus can comprise a honeycomb catalyst member carrying metallic catalyst, wherein the member can be contained in a cylindrical container via a cushion member. The catalyst structural member can be formed of a sheet-like catalyst structure and can be manufactured by a wet paper-making method. The structural member can be secured to the cushion member by press-fitting the structural member into the cushion member. 1. An exhaust gas purifying apparatus comprising:a honeycomb catalyst member carrying a metallic catalyst, wherein the catalyst member is contained in a cylindrical container via a cushion member;wherein the catalyst structural member is formed of a sheet-like catalyst structure made by a wet paper-making method; andwherein the catalyst structural member is secured to the cushion member by press-fitting the structural member into the cushion member.2. An exhaust gas purifying apparatus of claim 1 , wherein a contacting surface of the honeycomb catalyst member in contact with the cushion member has a fiber flow orientation substantially orthogonal to the press-fitting direction of the honeycomb catalyst member into the cushion member.3. An exhaust gas purifying apparatus of claim 2 , wherein the honeycomb catalyst member is formed by baking the sheet-like catalyst structure made by the wet paper making method from a flock obtained by adding flocculant to slurry formed of water mingled with fibers and binder claim 2 , and wherein the fiber flow orientation is formed during the paper-making process of the sheet-like catalyst ...

Exhaust gas purifying catalyst device

An exhaust gas purifying catalyst device, which can have high durability against vibration and high temperatures, can be configured to suppress the peeling of the catalyst layer from the catalyst carrier member during use. Additionally, the metallic catalyst can be easily recovered after use. According to the present disclosure, an exhaust gas purifying catalyst device can comprise a catalyst carrier member on which metallic catalyst for exhaust gas purification can be carried characterized in that the catalyst carrier member can be formed of a sheet-like catalyst carrier made by a wet paper-making method, and that the metallic catalyst can be carried as a catalyst layer on surfaces of the sheet-like catalyst carrier after the sheet-like catalyst carrier has been baked.

EXHAUST GAS PURIFICATION OXIDATION CATALYST

The oxidation catalyst for exhaust gas purification provided by the present invention includes a support supporting a noble metal that catalyzes the oxidation of carbon monoxide (CO). The support is mainly constituted by a composite metal oxide including, in terms of oxides, Al and Zr, or Al, Zr and Ti at the following mass ratios: AlO40 to 99% by mass, ZrO1 to 45% by mass, and TiO0 to 15% by mass. 2. (canceled)4. (canceled)5. The oxidation catalyst for exhaust gas purification according to claim 1 , wherein an average particle diameter of the noble metal particles determined by a CO pulse adsorption method is equal to or less than 5 nm.6. The oxidation catalyst for exhaust gas purification according to claim 1 , further comprising a hydrocarbon adsorbent in at least part of the catalyst coat layer.7. The oxidation catalyst for exhaust gas purification according to claim 6 , comprising zeolite particles as the hydrocarbon adsorbent.8. The oxidation catalyst for exhaust gas purification according to claim 1 , wherein an initial specific surface area of the support measured by a BET 1 point method is equal to or greater than 110 m/g.9. (canceled)10. The oxidation catalyst for exhaust gas purification according to claim 1 , that is used for purifying exhaust gas of a diesel engine.11. An exhaust gas purification device that purifies exhaust gas discharged from an engine claim 1 , comprising:an exhaust passage communicating with the engine; andan exhaust gas purification unit disposed in the exhaust gas passage, wherein{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the exhaust gas purification unit includes the oxidation catalyst for exhaust gas purification according to .'} The present invention relates to an oxidation catalyst for exhaust gas purification. More particularly, the present invention relates to an oxidation catalyst suitable for exhaust gas purification in a diesel engine and to a support constituting the catalyst. The present application claims ...

Catalytic Converter, a Kit for Servicing a Catalytic Converter, and Methods for Servicing a Catalytic Converter

A method is disclosed. The method comprises the steps of preparing a serviceable catalytic converter such that a catalyst substrate of the catalytic converter is serviceable while the catalytic converter remains connected to an exhaust system by forming a lower surface of the body of the catalytic converter with an absence of material in order to provide at least one opening in the lower surface of the body of the catalytic converter for permitting selective access to a fluid-flow passage that extends through the body of the catalytic converter that contains the catalyst substrate; and disposing at least one close-out member in the at least one opening for fluidly-sealing the at least one opening. A component of an exhaust system that is serviceable while remaining fluidly-connected and physically-connected to the exhaust system is also disclosed. A kit for servicing a component of an exhaust system that is serviceable while remaining fluidly-connected and physically-connected to the exhaust system is also disclosed.

CATALYTIC CONVERTER

A catalytic converter has a catalyst support that is heated due to supply of electricity, and a pair of electrodes that are disposed so as to contact an outer periphery of the catalyst support as seen in an orthogonal cross-section that is orthogonal to a direction in which exhaust flows. By making a volume resistivity of the electrodes be higher than that of electricity supplying portions of external cables that are connected to the electrodes respectively and are for supplying current to the electrodes, heat generated at the electrodes is provided to the catalyst support, and a generated heat amount of the catalyst support in vicinities of the electrodes is made to be large as compared with a generated heat amount at an inner portion of the catalyst support. 1. A catalytic converter comprising:a catalyst support that supports a catalyst for purifying exhaust discharged from an internal combustion engine, and that is heated due to electricity being supplied thereto; anda pair of electrodes that are disposed so as to contact an outer periphery of the catalyst support at opposing positions with the catalyst support therebetween, as seen in an orthogonal cross-section that is orthogonal to a direction in which the exhaust flows; andexternal cables that are connected to the electrodes respectively and supply current to the electrodes, and that are connected to positions at which a distance between the pair of electrodes is long as seen in the orthogonal cross-section,wherein, by making a volume resistivity of the electrodes higher than that of electricity supplying portions of external cables that are connected to the electrodes respectively and are for supplying current to the electrodes, heat generated at the electrodes is provided to the catalyst support, and a generated heat amount of the catalyst support in vicinities of the electrodes is made to be large as compared with a generated heat amount of an inner portion of the catalyst support, andthe pair of ...

After-Treatment System

An after-treatment system includes a Selective Catalytic Reduction (SCR) catalyst or a similar aftertreatment unit or brick that may be inserted into the opened end of a sleeve. The aftertreatment brick includes a substrate matrix with catalytic material that extends between a first face and a second face. A mantle is disposed around the substrate matrix and extends between a first rim proximate the first face and a second rim proximate the second face. The mantel may include a overhang extension that extends the first rim of the mantle beyond the first face of the substrate matrix. To enable retrieval of the SCR catalyst from the sleeve, a retrieval feature is disposed on a readily accessible, inner surface of the overhang extension.

Hydrocarbon trap having improved adsorption capacity

A hydrocarbon trap is provided for reducing cold-start hydrocarbon emissions. The trap is formed by extruding from about 60 to 80% by weight zeolite and from about 20 to 40% by weight of a binder to form an extruded zeolite monolith. A three-way catalyst and an oxygen storage capacity material may also be included in the trap. The hydrocarbon trap contains from about 5.0 to 8.0 g/in. 3 zeolite, which provides increased hydrocarbon retention. The hydrocarbon trap may be positioned in the exhaust gas passage of a vehicle such that hydrocarbons are adsorbed on the trap and stored until the monolith reaches a sufficient temperature for catalyst activation.

METHOD AND APPARATUS FOR REMOVAL OF CARBON DIOXIDE FROM AUTOMOBILE, HOUSEHOLD AND INDUSTRIAL EXHAUST GASES

An exhaust processing assembly for an exhaust generating device, the exhaust processing assembly comprising one or more cartridges, each of the cartridges including a housing and a constituent housed in the housing and capable of at least partially removing carbon dioxide from the exhaust of the exhaust generating device, said constituent being one or more of a solid absorber and any other constituent, wherein the cartridges are one of: removable from the exhaust processing assembly and replaceable with other like cartridges, and refillable with new constituent. 1. An exhaust processing assembly for an exhaust generating device , the exhaust processing assembly comprising:one or more cartridges, each of the cartridges including a housing and a constituent housed in the housing and capable of at least partially removing carbon dioxide from the exhaust of the exhaust generating device, said constituent being one or more of a solid absorber and any other constituent;wherein the cartridges are one of: (1) removable from the exhaust processing assembly and replaceable with other like cartridges, and (2) refillable with new constituent.2. An exhaust processing assembly in accordance with claim 1 , further comprising:an input connection assembly for selectively coupling the exhaust produced by the exhaust generating device with the one or more cartridges; anda control assembly for controlling the flow of the exhaust produced by the exhaust generating device through the input connection assembly to the one or more cartridges.3. An exhaust processing assembly in accordance with claim 2 , wherein the control assembly monitors carbon dioxide removing capacity of at least one cartridge while exhaust produced by the exhaust generating device is being conveyed through the at least one cartridge claim 2 , based on one or more of: carbon dioxide concentration in processed exhaust output from the at least one cartridge detected using one or more carbon dioxide sensors claim 2 , and ...

Exhaust Aftertreatment Device with Integrated Shell and Baffle

An exhaust treatment device includes an inner shell, an outer shell and insulation material positioned between the inner shell and the outer shell. An inlet tube has an end in communication with a cavity defined by the inner shell. A substrate for treating engine exhaust is positioned within the inner shell. A baffle plate includes a plurality of apertures positioned such that the exhaust passes through the apertures prior to entering the substrate. The baffle plate supports an end of the inner shell and the inlet tube. 1. An exhaust treatment device , comprising:an inner shell;an outer shell;an insulation material positioned between the inner shell and the outer shell;an inlet tube having an end in communication with a cavity defined by the inner shell;a substrate for treating engine exhaust positioned within the inner shell; anda baffle plate including a plurality of apertures positioned such that the exhaust passes through the apertures prior to entering the substrate, the baffle plate supporting an end of the inner shell and the inlet tube.2. The exhaust treatment device of claim 1 , wherein the baffle plate includes a circumferentially extending flange engaging the inlet tube.3. The exhaust treatment device of claim 2 , wherein the baffle plate includes a recess in receipt of the end of the inner shell.4. The exhaust treatment device of claim 3 , further including an inlet plate including a first aperture in receipt of the inlet tube and a second aperture in receipt of the outer shell.5. The exhaust treatment device of claim 4 , wherein the inlet tube is press-fit to the baffle plate.6. The exhaust treatment device of claim 5 , wherein the baffle plate and the inlet plate extend substantially parallel and spaced apart from one another.7. The exhaust treatment device of claim 6 , further including an insulation material positioned between the baffle plate and the inlet plate.8. The exhaust treatment device of claim 7 , further including a compressible mat ...

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.

EXHAUST TREATMENT DEVICE OF DIESEL ENGINE

An exhaust treatment device of a diesel engine is provided in which combustible gas is burned with oxygen in exhaust, combustion heat increases a temperature of the exhaust, and heat of the exhaust can burn and remove PM accumulating in a DPF. In order to cause a heater for radiating heat at a start of generation of the combustible gas to enter a catalyst inlet portion, and fit a liquid fuel retaining member over a periphery of the heater, a guide plate is provided to a lower face of the liquid fuel retaining member so that the air-fuel mixture moving down in the liquid fuel retaining member flows along an upper face of the guide plate out to a periphery of the guide plate. 12112221241252624272526242724752222227622234726667. An exhaust treatment device of a diesel engine , in which a combustible gas generating catalyst chamber is provided in a combustible gas generator , a combustible gas generating catalyst is housed in the combustible gas generating catalyst chamber , an air-fuel mixing chamber is formed at an upper portion of the combustible gas generator , air and liquid fuel are supplied into the air-fuel mixing chamber to thereby form an air-fuel mixture of the air and the liquid fuel in the air-fuel mixing chamber , the air-fuel mixture is supplied from a lower end portion of the air-fuel mixing chamber to a catalyst inlet portion at a center of an upper portion of the combustible gas generating catalyst , the combustible gas generating catalyst generates combustible gas , the combustible gas flows out from a catalyst outlet portion in a lower end portion of the combustible gas generating catalyst , the combustible gas is released from a combustible gas release port into an exhaust passage on an upstream side of a DPF , the combustible gas is burned with oxygen in exhaust , combustion heat increases a temperature of the exhaust , and heat of the exhaust can burn and remove PM accumulating in the DPF ,{'b': 67', '75', '71', '67, 'wherein, in order to cause a ...

Catalytic converter apparatus

A catalytic converter apparatus for use in an exhaust system of an internal combustion engine includes a housing having a gas inlet and a gas outlet, and at least one catalytic substrate element disposed in the housing. The at least one substrate element is divided into a plurality of zones or sections, the zones at least partially separated from one another to inhibit heat flow. The zones can be at least partially separated with walls. The walls can include insulating material for reducing the mobility of heat radially outwardly. Each of the zones defines a generally separate flow passage connecting the inlet and outlet in fluid communication. The apparatus can heat more rapidly from a cold start compared with conventional catalytic converters.

Exhaust system for a motor vehicle

An exhaust system ( 1 ) for a motor vehicle includes an exhaust gas-purifying device ( 2 ) for purifying exhaust gas ( 3 ) removed from an internal combustion engine with a reducing agent feed ( 4 ), which is arranged downstream and at a spaced location from the exhaust gas-purifying device ( 2 ) and by which a reducing agent can be introduced into the exhaust system ( 1 ). A reducing agent-deflecting device ( 7 ) is arranged between the exhaust gas-purifying device ( 2 ) and the reducing agent feed ( 4 ). The reducing agent-deflecting device ( 7 ) has at least one reducing agent-deflecting element ( 8 ) of a blade-like design.

Exhaust Gas Flow Distribution System

An exhaust after-treatment system for treating an exhaust produced by an engine, including an exhaust passage in communication with the engine; an injector for dosing an exhaust treatment fluid into the exhaust passage, a mixing device positioned downstream from the injector, the mixing device operable to intermingle the exhaust treatment fluid and the exhaust; an irregularly-shaped exhaust treatment substrate positioned downstream from the mixing device; and a dispersion device positioned between the mixing device and the irregularly-shaped exhaust treatment substrate. The dispersion device includes a plurality of dispersion members each being operable to direct an exhaust stream flowing through the dispersion device into a plurality of different directions to disperse the exhaust flow over substantially an entire surface of the irregularly-shaped exhaust treatment substrate. 1. An exhaust after-treatment system , comprising:an exhaust passage;an irregularly-shaped exhaust treatment component in communication with the exhaust passage; anda dispersion device disposed in the exhaust passage at a position upstream of the exhaust treatment device, the dispersion device including a plurality of dispersion members each being operable to direct an exhaust stream flowing through the dispersion device into a plurality of different directions to disperse the exhaust flow over substantially an entire surface of the irregularly-shaped exhaust treatment component.2. The exhaust after-treatment system of claim 1 , wherein the dispersion device includes a cylindrical mounting ring claim 1 , and each of the dispersion members extend from the cylindrical mounting ring.3. The exhaust after-treatment system of claim 2 , wherein the dispersion members extend radially outward relative to the cylindrical ring.4. The exhaust after-treatment system of claim 2 , wherein the dispersion members extend radially inward relative to the cylindrical ring.5. The exhaust after-treatment system of ...

SYSTEM FOR COLLECTING CARBON DIOXIDE IN FLUE GAS

A system for collecting carbon dioxide in flue gas includes a stack that discharges flue gas discharged from an industrial facility to outside, a blower that is installed at the downstream side of the stack and draws the flue gas therein, a carbon-dioxide collecting device that collects carbon dioxide in the flue gas drawn in by the blower, and a gas flow sensor arranged near an exit side within the stack. A drawing amount of the flue gas by the blower to the carbon-dioxide collecting device is increased until an flow rate of the flue gas from the stack becomes zero in the gas flow sensor, and when the discharged amount of flue gas from the stack becomes zero, drawing in any more than that amount is stopped, and the carbon dioxide in the flue gas is collected while the flue gas is drawn in by a substantially constant amount. 1. A system for collecting carbon dioxide in flue gas , comprising:a stack that discharges flue gas discharged from an industrial facility to outside;a blower that is installed at a downstream side of the stack and draws the flue gas therein;a carbon-dioxide collecting device that collects carbon dioxide in the flue gas drawn in by the blower; anda sensor that is arranged at least one location in a stack flue at a downstream side of the stack within the stack and measures gas temperature or gas type, whereina drawing amount of the flue gas by the blower to the carbon-dioxide collecting device is increased until the gas temperature or a concentration of the gas type changes in the sensor, andwhen the gas temperature or the concentration of the gas type changes, drawing in any more than the amount is stopped, and the carbon dioxide in the flue gas is collected while drawing in the flue gas by a substantially constant amount.2. The system for collecting carbon dioxide in flue gas according to claim 1 , wherein the gas type is oxygen or carbon dioxide. This is a divisional of U.S. application Ser. No. 12/368,474 filed on Feb. 10, 2009, the entire ...

EXHAUST GAS-TREATING DEVICE

An exhaust gas-treating device () for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (), which has a jacket () extending circumferentially on the side and two end-side end bottoms (). Maintenance is simplified with at least one mounting tube (), which passes through one or the first end bottom () and into the outlet end () of which a particle filter () is plugged axially from the outside, with a deflecting housing (). The deflecting housing () contains a deflecting chamber (), and has at least one inlet () communicating with the deflecting chamber () and at least one outlet () communicating with the deflecting chamber (). A fastening device () is provided for detachably fastening the respective inlet () at the respective outlet end () of the mounting tube (). 1. An exhaust gas-treating device for an exhaust system of a motor vehicle internal combustion engine , the exhaust gas-treating device comprising:a housing with a circumferentially extending jacket, a first axial end side connected to the jacket at a first axial end of said housing, and a second axial end side connected to the jacket at a second axial end of said housing;a first tube extending through said first end side, said first tube having an end arranged spaced from said housing and said first end side;a second tube extending through said first end side, said second tube having an end arranged spaced from said housing and said first end side, said second tube being separate from said first tube;a deflecting housing defining a deflecting chamber, said deflecting housing having an inlet communicating with said deflecting chamber and an outlet communicating with said deflecting chamber;a first fastening means for detachably fastening said inlet of said deflection housing to said end of said first tube;a second fastening means for detachably fastening said outlet of said deflection housing to said end of said second tube.2. An exhaust gas-treating device in ...

HONEYCOMB CATALYST BODY

The honeycomb catalyst body includes a honeycomb structure having porous partition walls, outflow side plugged portions, inflow side plugged portions, and catalyst layers formed on the surfaces of the partition walls on the side of the outflow cells, the cells are formed so that an open area of each outflow cell is larger than an open area of each inflow cell, a porosity of the partition walls of the honeycomb structure is from 25 to 55%, and in a cross section parallel to the extending direction of the cells, a total area of the catalyst layers formed on the surfaces of the pores in the partition walls is 5% or less of a total area of the pores in the partition walls. 1. A honeycomb catalyst body comprising:a honeycomb structure having porous partition walls with which a plurality of cells extending from an inflow side end surface to an outflow side end surface are defined and formed to become through channels of an exhaust gas;outflow side plugged portions arranged in open frontal areas of the predetermined cells in the outflow side end surface, to form the inflow cells which are open in the inflow side end surface and are closed in the outflow side end surface;inflow side plugged portions arranged in open frontal areas of the remaining cells in the inflow side end surface, to form the outflow cells which are open in the outflow side end surface and are closed in the inflow side end surface; andporous catalyst layers formed on the surfaces of the partition walls on the side of the outflow cells, and having a catalyst to purify the exhaust gas,wherein in the honeycomb structure, the inflow cells and the outflow cells are alternately arranged via the partition walls, and the plurality of cells are formed so that an open area of each of the outflow cells in a cross section of the outflow cell which is vertical to an extending direction of the cells is larger than an open area of each of the inflow cells in a cross section of the inflow cell which is vertical to the ...

SYSTEM AND METHOD FOR EMPLOYING CATALYTIC REACTOR COATINGS

A system includes a catalytic reactor configured to mount to a combustor. The catalytic reactor includes a catalyst configured to reduce emissions associated with combustion in the combustor. The catalytic reactor also includes a first sacrificial coating disposed over the catalyst prior to mounting of the catalytic reactor into the combustor, wherein the first sacrificial coating is removable while the catalytic reactor is mounted to the combustor without damaging the catalyst. 1. A system , comprising: a catalyst configured to reduce emissions associated with combustion in the combustor; and', 'a first sacrificial coating disposed over the catalyst prior to mounting of the catalytic reactor into the combustor, and the first sacrificial coating is removable while the catalytic reactor is mounted to the combustor without damaging the catalyst., 'a catalytic reactor configured to mount to a combustor, wherein the catalytic reactor comprises2. The system of claim 1 , comprising a second sacrificial coating disposed over the first sacrificial coating prior to mounting of the catalytic reactor to the combustor claim 1 , wherein the first and second sacrificial coatings are different from one another claim 1 , wherein the first and second sacrificial coatings are removable while the catalytic reactor is mounted to the combustor without damaging the catalyst.3. The system of claim 2 , comprising a third sacrificial coating disposed over the second sacrificial coating prior to mounting of the catalytic reactor to the combustor claim 2 , wherein the second and third sacrificial coatings are different from one another claim 2 , wherein the first claim 2 , second claim 2 , and third sacrificial coatings are removable while the catalytic reactor is mounted to the combustor without damaging the catalyst.4. The system of claim 2 , wherein the second sacrificial coating has a greater temperature resistance than the first sacrificial coating.5. The system of claim 2 , wherein the ...

UREA TANK AND BASE PLATE WITH AN INTEGRATED HEATING ELEMENT

Urea tank and base plate with an integrated heating element in which the heating element comprising at least one resistive track affixed to one flexible film and/or placed between two flexible films. 1. (canceled)2. A urea tank with an integrated heating element in which said heating element comprises at least one flexible heating part which is a flexible heater comprising at least one resistive track placed between two flexible films.3. The urea tank according to claim 2 , wherein the flexible heater comprises several resistive tracks connected in parallel.4. The urea tank according to claim 2 , wherein the flexible heater has a variable power loss per unit area of resistive track.5. The urea tank according to claim 2 , wherein the flexible heater is equipped with at least one tentacle comprising at least one part of resistive track.6. The urea tank according to claim 5 , wherein the tentacle has a free end and a sufficient length so that this end is able to rest on the bottom of the tank.7. The urea tank according to claim 5 , wherein at least one tentacle has a free end that is firmly attached to a float claim 5 , forcing such tentacle to remain in the liquid phase.8. The urea tank according to claim 5 , wherein at least one tentacle is sized so as to be able to be inserted into a tube and wherein this tentacle comprises a free end equipped with an orifice.9. The urea tank according to claim 5 , wherein at least one tentacle extends at least partly into a filling interface of the tank.10. The urea tank according to claim 2 , wherein the flexible heater is affixed to a support integrated into a base plate that integrates at least one active accessory of the tank and/or of a urea injection system.11. The urea tank according to claim 10 , wherein the support has a substantially cylindrical shape and extends substantially over the entire height of the tank.12. The urea tank according to claim 11 , wherein the flexible heater comprises at least one flexible tab ...

Honeycomb filter

A honeycomb filter 100 includes honeycomb segments 4 , plugging portions 5 , and joining layers 7 , area of outflow end surface 12 of honeycomb segment is larger than area of inflow end surface 11 , and shape of cross section of honeycomb segment vertical to axial direction X has a similarity in axial direction X. Moreover, thickness of joining layer decreases in at least a part of joining layer in direction from inflow end surface side toward outflow end surface side, and length L 2 of joining layer in axial direction X is smaller than 95% of length L 1 of honeycomb segment in axial direction X. Furthermore, a region of honeycomb segments 4 , 5 mm or more from outflow end surface 12 in axial direction X, is not provided with joining layers 7 which join side surfaces of honeycomb segments 4 to each other.

Flow device for an exhaust system

A flow device for an exhaust system includes a body that defines an interior cavity. An exhaust inlet passage is disposed in the interior cavity. An exhaust outlet passage is disposed in the interior cavity so that at least a portion of the exhaust inlet passage circumferentially surrounds at least a portion of the exhaust outlet passage. A doser is adapted to inject reductants into the interior cavity of the body such that the reductants are injected in the same general direction as the direction of flow of the exhaust gases.

CATALYTIC CONVERTER APPARATUS

A catalytic converter apparatus for use in an exhaust system of an internal combustion engine includes a housing having a gas inlet and a gas outlet, and at least one catalytic substrate element disposed in the housing. The at least one substrate element is divided into a plurality of zones or sections, the zones at least partially separated from one another to inhibit heat flow. The zones can be at least partially separated with walls. The walls can include insulating material for reducing the mobility of heat radially outwardly. Each of the zones defines a generally separate flow passage connecting the inlet and outlet in fluid communication. The apparatus can heat more rapidly from a cold start compared with conventional catalytic converters. 2. The apparatus of claim 1 , wherein the at least one wall comprises cementitious insulating material.3. The apparatus of claim 2 , wherein thickness of the insulating material between the zones is varied.4. The apparatus of claim 1 , wherein the insulating material has a thickness between the zones of less than 10 mm.5. The apparatus of claim 1 , wherein the insulating material comprises ceramic material.6. The apparatus of claim 1 , wherein the at least one wall separates the zones along substantially an entire length of the zones in a direction extending from the inlet to the outlet.7. The apparatus of claim 1 , wherein the zones comprise a central zone and at least one radial zone.8. The apparatus of claim 7 , wherein the at least one wall separating the central substrate zone from the at least one radial zone comprises at least one connecting portion.9. The apparatus of claim 1 , wherein the at least one substrate element substantially fills the housing in a radial dimension perpendicular to a direction of gas flow extending from the inlet to the outlet.10. The apparatus of claim 1 , wherein the zones are arranged generally in parallel in a direction of gas flow extending from the inlet to the outlet.11. The apparatus ...

TURBOCHARGER WITH ANNULAR ROTARY BYPASS VALVE FOR THE TURBINE, AND CATALYST DISPOSED IN THE BYPASS CHANNEL OF THE TURBINE HOUSING

A turbocharger includes a turbine wheel mounted within a turbine housing and connected to a compressor wheel by a shaft. The turbine housing defines an exhaust gas inlet connected to a volute that surrounds the turbine wheel, and an axial bore through which exhaust gas that has passed through the turbine wheel is discharged from the turbine housing. The turbine housing further defines an annular bypass passage surrounding the bore and arranged to allow exhaust gas to bypass the turbine wheel. An annular bypass valve is disposed in the bypass passage. The bypass valve comprises a fixed annular valve seat and a rotary annular valve member arranged coaxially with the valve seat. A catalyst is disposed in the annular bypass passage. The catalyst is formed of spaced-apart, undulating metal fins coated with a catalyst material and contained in a generally annular cage. 1. A turbocharger comprising:a compressor wheel mounted within a compressor housing;a turbine wheel mounted within a turbine housing and connected to the compressor wheel by a shaft;the turbine housing defining an exhaust gas inlet connected to a volute that surrounds the turbine wheel, the turbine housing further defining an axial bore through which exhaust gas that has passed through the turbine wheel is discharged from the turbine housing;the turbine housing defining an annular bypass passage surrounding the bore and arranged to allow exhaust gas to bypass the turbine wheel;an annular bypass valve disposed in the bypass passage, the bypass valve comprising a fixed annular valve seat and a rotary annular valve member arranged coaxially with the valve seat relative to an axis, the valve member being disposed against the valve seat and being rotatable about the axis for selectively varying a degree of alignment between respective orifices defined through each of the valve seat and valve member, ranging from no alignment defining a closed condition of the bypass valve, to at least partial alignment defining ...

EXHAUST GAS PURIFICATION DEVICE

A substrate () includes an inflow-side cell (), an outflow-side cell (), and a porous, gas-permeable partition wall () that separates the inflow-side cell () and the outflow-side cell () from each other, and also includes a first catalyst portion () that is provided on a side of the partition wall () that faces the inflow-side cell () at least at a portion in upstream side in an exhaust gas flow direction, and a second catalyst portion () that is provided on a side of the partition wall that faces the outflow-side cell at least at a portion in downstream side. With respect to a pore volume of pores with a pore size of 10 to 18 μm, when a measured value of the pore volume in the first catalyst portion () and the partition wall () within a region where the first catalyst portion () is provided is defined as a first pore volume, and a measured value of the pore volume in the second catalyst portion () and the partition wall () within a region where the second catalyst portion () is provided is defined as a second pore volume, the first pore volume is greater than the second pore volume. A catalytically active component contained in the first catalyst portion () and a catalytically active component contained in the second catalyst portion () are of different types. 1. An exhaust gas purification catalyst comprising:a substrate; anda catalyst portion provided in the substrate, an inflow-side cell including a space whose inflow-side in an exhaust gas flow direction is open and whose outflow-side is closed;', 'an outflow-side cell including a space whose inflow-side in the exhaust gas flow direction is closed and whose outflow-side is open; and', 'a porous partition wall that separates the inflow-side cell and the outflow-side cell from each other, and, 'the substrate including a first catalyst portion that is provided at least on a portion of a side of the partition wall that faces the inflow-side cell, the portion being located on an upstream side in the flow direction; ...

Emissions reduction systems and methods

An internal combustion engine emissions reduction system in which a emissions passing through a second catalyst element having a second catalyst function are mixed with emissions passing through a first catalyst element having a first catalyst function.

Exhaust gas purifying catalyst and exhaust gas purification method using same

A catalyst that is not only capable of efficiently treating CO even at a low exhaust gas temperature, but also capable of exerting favorable CO purification efficiency in a low-temperature exhaust gas even in a case of being exposed for a long time to an engine exhaust gas that is a high temperature and contains HC, CO, NOx, water vapor and the like; and an exhaust gas treatment technique are described. The catalyst for purifying exhaust gas contains: a noble metal; an oxide containing as a base material A at least two kinds of elements selected from the group consisting of aluminum, zirconium and titanium; and an oxide containing as a base material B at least one kind of element selected from the group consisting of silicon, cerium, praseodymium and lanthanum; in which the base material A and the base material B satisfy a specific formula.

Article of Manufacture for Securing a Catalyst Substrate

An aftertreatment component for use in an exhaust aftertreatment system. The aftertreatment component comprises an aftertreatment substrate and a compressible material. The compressible material may be formed from a plastic thermoset, a rubberized material, or a metal foil which permits for the selective expansion of the substrate within the compressible material, while also reducing cost and manufacturing complexity. In various embodiments, the aftertreatment substrate and the compressible materials may be formed separately and coupled to each other, or they may be formed concurrently via coextrusion. 113.-. (canceled)14. A method comprising:passing a heated exhaust stream into a aftertreatment substrate;thermally expanding the aftertreatment substrate into a compressible material defining the aftertreatment substrate; andas a result of thermally expanding the aftertreatment substrate into the compressible material defining the aftertreatment substrate, at least partially compressing corrugations of the compressible material.15. The method of claim 14 , further comprising confining the compressible material within an outer skin defining the compressible material.16. The method of claim 14 , further comprising positioning the aftertreatment substrate within the compressible material claim 14 , and applying a catalyst washcoat to the aftertreatment substrate after the positioning.17. The method of claim 16 , further comprising applying at least a portion of the catalyst washcoat to a substrate side of the compressible material.18. The method of claim 14 , wherein the compressible material is defined in part by an outer skin claim 14 , and wherein the compressible material is at least partially compressed between the outer skin and the aftertreatment substrate.19. The method of claim 14 , wherein the compressible material comprises a polymer-based thermoset.20. The method of claim 14 , wherein the compressible material comprises a thermoplastic material.21. The method ...

Dosing and mixing arrangement for use in exhaust aftertreatment

A method for causing exhaust gas flow to flow at least 270 degrees in a first direction about a perforated tube using a baffle plate having a main body with a plurality of flow-through openings and a plurality of louvers positioned adjacent to the flow-through openings. The method includes deflecting a first portion of the exhaust gas flow with the main body of the baffle plate. The method also includes allowing a second portion of the exhaust gas flow to flow through the flow-through openings of the baffle plate. The method also deflects the second portion of the exhaust gas flow at a downstream side of the main body with the louvers hereby causing the second portion of the exhaust gas flow to flow in the first direction about the perforated tube.

EXHAUST GAS PURIFICATION APPARATUS

A exhaust gas purification apparatus is provided with: a substrate having a wall-flow structure and including entry-side cells, exit-side cells, and a porous partition; a first catalyst region formed in small diameter pores having relatively small pore diameters among internal pores in the partition; and a second catalyst region formed in large diameter pores having relatively large pore diameters among the internal pores in the partition. The first catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support, while the second catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support and other than at least the precious metal present in the first catalyst region. 1. An exhaust gas purification apparatus that is disposed in an exhaust passage of an internal combustion engine and that purifies an exhaust gas discharged from the internal combustion engine , the exhaust gas purification apparatus comprising:a substrate having a wall-flow structure and including an entry-side cell in which only an exhaust gas inflow-side end part is open, an exit-side cell residing adjacent to an entry-side cell and in which only an exhaust gas outflow-side end part is open, and a porous partition that divides the entry-side cell from the exit-side cell;a first catalyst region formed in small pores having relatively small pore diameters among internal pores in the partition; anda second catalyst region formed in large pores having relatively large pore diameters among the internal pores in the partition, whereinthe first catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support, andthe second catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support and other than at least the precious metal present in ...

METHOD FOR THE PREPARATION OF A CATALYSED MONOLITH

Method for the preparation of a catalysed monolithic body or a catalysed particulate filter by capillary suction of sol-solution containing catalytically active material and metal oxide catalyst carriers or precursors thereof into pores of monolithic substrate. 1. A method for the preparation of a catalysed monolith , comprising the steps ofa) providing a porous monolith substrate with a plurality of longitudinal flow channels separated by gas permeable partition walls, the monolith substrate having a first end face and at a distance to the first end face a second end face;b) in a container providing a sol solution at least in an amount corresponding to pore volume of the gas permeable partition walls, the sol solution containing a water soluble or colloidal precursor of one or more catalytically active compounds and a water soluble or colloidal precursor of one or more metal oxides catalyst carrier compounds, at least one of the one or more precursors is colloid and at least one of the one or more precursors is water soluble;c) placing the monolith substrate substantially vertically in the container with the first or second end face dipped into the sol solution;d) sucking up the sol solely by capillary forces into pores of the permeable partition walls from the end face dipped into the sol solution without applying vacuum or pressure to a predetermined distance in the permeable partition walls from the end face dipped into the sol solution;e) subsequently inverting the monolith substrate and placing the monolith substrate substantially vertically in the container with the opposite end face dipped into the sol solution;f) sucking up the sol solely by capillary forces into pores of the permeable partition walls from the opposite end face dipped into the sol solution without applying vacuum or pressure; andg) drying and calcining the thus coated monolith substrate.2. The method of claim 1 , wherein the predetermined distance is about half of the whole distance between ...

METHOD FOR THE PREPARATION OF A ZONE COATED CATALYSED MONOLITH

Method for zone coating of monolithic substrates by using different sol-solution containing different catalyst carrier precursors and metal catalyst precursors and suction of one of the sol-solution up into pores in the walls of the zone to be coated, solely by capillary forces and another different sol-solution into the walls of another zone to be coated by capillary forces. 1. A method for the preparation of a catalysed monolith zone coated with different catalysts , comprising the steps ofa) providing a porous monolith substrate with a plurality of longitudinal flow channels separated by gas permeable partition walls, the monolith substrate having a first end face and at a distance to the first end face a second end face;b) providing a first sol solution in an amount corresponding to at least the pore volume in a first catalyst zone of the gas permeable partition walls to be coated with the first sol solution, the first sol solution containing water soluble or suspended precursors of one or more catalytically active compounds and water soluble or suspended precursors or oxides of one or metal oxides catalyst carrier compounds, at least one of the one or more precursors or oxides is suspended and at least one of the one or more precursors is dissolved in the sol solution;c) providing a second sol solution in an amount corresponding to at least the pore volume in a second catalyst zone of the gas permeable partition walls to be coated with the second sol solution, the second sol solution containing water soluble or suspended precursors of one or more catalytically active compounds different to the catalytically active compounds in the first sol solution and water soluble or suspended precursors or oxides of one or more metal oxides catalyst carrier compounds, at least one of the one or more precursors or oxides is suspended and at least one of the one or more precursors is dissolved in the second sol solution;d) placing the porous monolith substrate substantially ...

METAL SUBSTRATE FOR CATALYTIC CONVERTERS

A metal substrate for catalytic converter is characterized by: a flat foil and a corrugated metal foil arranged on a gas inlet side end section being joined to each other; the flat foil and the corrugated metal foil arranged in an outer circumferential joining section being joined to each other, said outer circumferential joining section being connected to an end section of the gas inlet side end section in the axial direction; an outer jacket and the honeycomb core being joined by interposing a bonding layer in the gas outlet side end section area P fulfilling formula (A), when P is the length of the bonding layer in the axial direction; a corrugated metal foil having an impact mitigating section; the impact mitigating section being formed in an area corresponding to at least the gas inlet side end section and the outer circumferential joining section. 1. A metal substrate for catalytic converter , comprising: a honeycomb core containing a flat metal foil and a corrugated metal foil laminated onto each other; and a metal outer jacket surrounding an outer circumferential surface of the honeycomb core , wherein:the flat metal foil and the corrugated metal foil disposed in a gas inlet side joining section are joined to each other;the flat metal foil and the corrugated metal foil disposed in an outer circumferential joining section are joined to each other, the outer circumferential joining section is connected to an axial end section of the gas inlet side joining section;the gas inlet side joining section extends 5 mm or more and 50% or less of an entire length in an axial direction from a gas inlet side end section of the honeycomb core, across all layers in a radial direction of the honeycomb core;the outer circumferential joining section extends from the axial end section of the gas inlet side joining section toward a gas outlet side end section of the honeycomb core across two or more layers and ⅓ or less of the total number of layers in the radial direction from ...

Catalyst Storage Case, Exhaust Duct, and Engine

A catalyst storage case includes a case body having an exhaust passage; and first and second oxidation catalysts disposed in the exhaust passage of the case body. The first and second oxidation catalysts are arrayed in a direction intersecting a direction along which the exhaust passage extends. 1. A catalyst storage case comprising:a case body having an inlet, an outlet, and an exhaust passage extending from the inlet to the outlet for allowing exhaust gas to pass therethrough; anda plurality of oxidation catalysts disposed in the exhaust passage of the case body, whereinthe plurality of oxidation catalysts are arrayed in a direction intersecting a direction along which the exhaust passage extends.2. The catalyst storage case according to claim 1 , comprising:a baffle plate disposed between the oxidation catalysts and the inlet in the exhaust passage of the case body for leading exhaust gas to each of the oxidation catalysts.3. An exhaust duct comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the catalyst storage case according to ; and'}an exhaust muffler communicating with the outlet of the catalyst storage case, whereinthe catalyst storage case and the exhaust muffler are integrally connected together.4. An engine comprising:a cylinder block having a cylinder;a cylinder head attached to the cylinder block, the cylinder head having an exhaust port communicating with the interior of the cylinder; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the catalyst storage case according to attached to the cylinder head, wherein'}the inlet of the catalyst storage case is in communication with the exhaust port of the cylinder head.5. The engine according to claim 4 , whereinthe cylinder block has a piston disposed in the cylinder and a crankshaft coupled to the piston,the cylinder block has a load-side end face from which a load-side end of the crankshaft protrudes,the catalyst storage case is disposed toward the load-side end face of the cylinder block, ...

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 ...

NON-RESPIRABLE, POLYCRYSTALLINE, ALUMINOSILICATE CERAMIC FILAMENTS, FIBERS, AND NONWOVEN MATS, AND METHODS OF MAKING AND USING THE SAME

A nonwoven web including a multiplicity of non-respirable, polycrystalline, aluminosilicate ceramic filaments entangled to form a cohesive mat, the polycrystalline, aluminosilicate ceramic filaments having an average mullite percent of at least 75 wt. %. The cohesive mat preferably exhibits a compression resilience after 1,000 cycles at 900° C. when measured according to the Fatigue Test, of at least 30 kPa. Insulation articles including the cohesive mats or formed by chopping the ceramic mats into ceramic fibers, pollution control devices including the insulation articles, and methods of making the non-respirable, polycrystalline, aluminosilicate ceramic filaments and fibers, nonwoven webs, insulation articles, and pollution control devices, are also described. 1. A nonwoven article , comprising:a plurality of non-respirable, polycrystalline, aluminosilicate ceramic filaments entangled to form a cohesive nonwoven mat, wherein the aluminosilicate ceramic filaments have an average mullite percent of at least 75 wt. %, optionally wherein the cohesive mat exhibits a compression resilience of at least 30 kPa after 1,000 cycles at 900° C. when measured according to the Fatigue Test using the open gap setting.2. The nonwoven article of claim 1 , wherein each of the plurality of non-respirable claim 1 , polycrystalline claim 1 , aluminosilicate ceramic filaments exhibits a diameter of at least 3 micrometers as determined using the Filament Diameter Measurement Procedure with electron microscopy.3. The nonwoven article of claim 1 , wherein the plurality of non-respirable claim 1 , polycrystalline claim 1 , aluminosilicate ceramic filaments exhibit at least one of a Process Capability Index (Cpk) for fiber diameters greater than three micrometers of at least 1.33 claim 1 , or a Process Performance Index (Ppk) for fiber diameters greater than three micrometers of at least 1.33 claim 1 , as determined using the Filament Diameter Measurement Procedure with electron microscopy.4 ...

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 ...

HONEYCOMB STRUCTURAL BODY

In a cross section, perpendicular to an axial direction of a honeycomb structural body having partition walls and cells, a plurality of sections having a different cell density is formed from a central area toward an outer peripheral area, and a partition wall is formed between the sections adjacent to each other. The boundary section has boundary partition walls and plural boundary cells having a polygonal shape different in shape from the cells in the sections formed adjacent to the boundary section. The partition walls in the sections adjacent to the boundary section are connected by the boundary partition walls. A part of the boundary cell is surrounded by at least the boundary partition walls. A relationship of φ1/φ2≧1.25 is satisfied, where φ1 indicates an average hydraulic diameter of the boundary cells and φ2 indicates an average hydraulic diameter of the cells. 1. A honeycomb structural body formed as a monolithic mold comprising partition walls arranged in a lattice shape and a plurality of cells surrounded by the partition walls , whereinthe honeycomb structural body comprises a plurality of cell density sections having a different cell density formed in a radial direction from a central side to an outer peripheral side,{'b': '2', 'a boundary section is formed between the cell density sections () which are immediately adjacent,'}the boundary section comprises boundary partition walls and a plurality of boundary cells having a polygonal shape,the boundary partition walls connect the partition walls in the cell density sections formed adjacent to the boundary section,the boundary cells having a polygonal shape are different in shape from the cells,at least a part of the boundary cell is surrounded by the boundary partition walls, and {'br': None, 'φ1/φ2≧1.25,'}, 'the honeycomb structural body satisfies a relationship of'}where φ1 indicates an average hydraulic diameter of the boundary cells formed in the boundary section, and φ2 indicates an average ...

Scr mixer and scr device comprising same

The present invention relates to an SCR mixer for mixing exhaust gas, and an SCR device comprising the same and, more specifically, to a mixing device for an exhaust gas post-treatment system of a diesel engine, the mixing device being for removing, by means of a catalyst and a filter, nitrogen oxide and diesel particulate matter contained in the exhaust gas to be discharged from an engine. According to the present invention, since a reducing agent is sprayed at an inner shell heated by exhaust gas, thereby increasing atomization and evaporation of reducing agent droplets, the SCR mixer has an effect of minimizing a phenomenon, occurring in a conventional mixer, in which a reducing agent is precipitated and sticks to the inner surface of an inner shell.

Compact Selective Catalytic Reduction System

A selective catalytic reduction (SCR) system for treating exhaust gas from a diesel engine is provided, along with a method of assembling such a system. The system comprises a frame, a SCR catalyst contained within a SCR canister, and an ammonia oxidation catalyst contained within an ammonia oxidation canister. Each of the SCR and ammonia oxidation canisters is removably attached to the frame.

AERODYNAMIC CATALYTIC CONVERTER

An improved catalytic converter includes a Coanda chamber assembly connected upstream of a catalytic reaction chamber, where the exhaust pipe is to be connected to the Coanda chamber assembly. The Coanda chamber assembly forms a Coanda chamber that has at least one narrower section and at least one wider section immediately downstream of the narrower section, with openings formed at the narrowest point of a narrower section. In operation, when engine exhaust gas is fed into the Coanda chamber, the gas pressure increases at the narrower section, and drops when the gas enters the wider section. As a result, air is sucked into the Coanda chamber via the openings and mixes with the exhaust gas. This lowers the exhaust temperature and enhances the efficiency of the catalytic reactions in the catalytic reaction chamber. 1. A catalytic converter comprising:a catalytic reaction chamber, which includes a catalytic reactor housing and a catalytic reactor core disposed inside the catalytic reactor housing; anda Coanda chamber assembly, having a downstream end connected to the catalytic reaction chamber and an upstream end adapted to be connected to an exhaust pipe, the Coanda chamber assembly including an interior housing which defines an interior space, wherein the interior space extends in a longitudinal direction and has varying diameters along the longitudinal direction defining a plurality of sections, including at least a first narrower section and a first wider section immediately downstream of the first narrow section, wherein a lateral dimension of a widest point of the first wider section is 2 to 3 times a lateral dimension of a narrowest point of the first narrower section, the interior housing further including one or more openings located at the narrowest point of the first narrower section or between the narrowest point of the first narrower section and the widest point of the first wider section.2. The catalytic converter of claim 1 , wherein the catalytic ...

MIXER BOX, A USE THEREOF AND A METHOD FOR MIXING

Mixer box for mixing, vaporization and decomposition of a liquid additive to the exhaust gas flow from a combustion engine, comprising a gas inlet (), a gas outlet () and internal duct means establishing a gas flow path (A-H, a-h) from the gas inlet () to the gas outlet (). The duct means includes a first duct portion () having an outer wall () and an inner wall (), which is surrounded by the outer wall (), such that the gas flow path through said first duct portion () is established inbetween. The first duct portion () is provided with at least two partitions (-) extending between the outer wall () and the inner wall (), which separate the first duct portion () into at least two duct sections (, , , ) of which at least one is an upstream duct section (, ) and at least one is a downstream duct section (, ). 118.-. (canceled)19108109108109107171161161171107161171107121124171161107101101102102101101102102106106107112106112106ab,a,ba,ba,b. A mixer box for mixing and complete or partial vaporization and/or decomposition of a liquid additive to the exhaust gas flow from a combustion engine , which mixer box has a gas inlet () , a gas outlet () and internal duct means establishing a gas flow path (A-H) from the gas inlet () to the gas outlet () , which duct means includes a first duct portion () having an outer wall () and an inner wall () , the inner wall () being surrounded by the outer wall () , such that the gas flow path through said first duct portion () thereby is established between said walls ( , ) , said first duct portion () is provided with at least two partitions (-) extending between the outer wall () and the inner wall () and separating said first duct portion () into at least two duct sections ( ,) of which at least one is an upstream duct section () and at least one is a downstream duct section () , wherein the duct means further includes a second duct portion () , which second duct portion () is surrounded by the first duct portion () , characterized in ...

HEATING SYSTEM

A heating system that heats the reducing agent supplier for supplying an urea aqueous solution to an exhaust passage of the internal combustion engine in a vehicle includes: a block heater that is provided in a housing formed with a coolant circuit of the internal combustion engine and can be supplied with power of an external power supply; a coolant circulation passage that is branched from the coolant circuit, is disposed in at least a part of the reducing agent supplier, and merges with the coolant circuit again; an on-off control valve that is provided in the middle of the coolant circulation passage; a bypass passage that connects an upstream side and a downstream side of the on-off control valve; and an on-off valve that is provided in the bypass passage. 11051. A heating system that heats a reducing agent supplier () for supplying a urea aqueous solution to an exhaust passage () of an internal combustion engine () in a vehicle , the heating system comprising:{'b': 40', '4', '1', '90, 'a block heater () that is provided in a housing formed with a coolant circuit () of the internal combustion engine () and is configured to be supplied with power of an external power supply ();'}{'b': 50', '4', '10', '4, 'a coolant circulation passage () that is branched from the coolant circuit (), is disposed in at least a part of the reducing agent supplier (), and merges with the coolant circuit () again;'}{'b': 61', '50, 'an on-off control valve () that is provided in the middle of the coolant circulation passage ();'}{'b': 50', '61, 'i': 'ba', 'a bypass passage () that connects an upstream side and a downstream side of the on-off control valve (); and'}{'b': 63', '50, 'i': 'ba', 'an on-off valve () that is provided in the bypass passage ().'}2. The heating system according to claim 1 , wherein{'b': '61', 'the on-off control valve () is a valve of a normally closed type that is driven with supplied power from an on-board power supply, and'}{'b': '63', 'the on-off valve () ...

EXHAUST AFTERTREATMENT SYSTEM FOR AN ENGINE

An exhaust aftertreatment system for an engine operating within a range of stoichiometric and sub-stoichiometric air-fuel ratios (0.92<λ≤1) includes an exhaust passageway, and a first catalytic module that has an inlet disposed in fluid communication with the exhaust passageway for receiving exhaust from the exhaust passageway. The exhaust aftertreatment system also includes a first device for introducing an oxidant into the exhaust of the first catalytic module, and a second device for mixing the introduced oxidant with the exhaust of the first catalytic module. The exhaust aftertreatment system also includes a second catalytic module concentric with the first catalytic module such that heat transfer is facilitated between the first and second catalytic modules while exhaust is prevented from flowing radially between the first and second catalytic modules, and a means for diverting the exhaust from an outlet of the first catalytic module to an inlet of the second catalytic module. 1. An exhaust aftertreatment system for an engine operating within a range of stoichiometric and sub-stoichiometric air-fuel ratios (0.92<λ≤1) , the exhaust aftertreatment system comprising:an exhaust passageway;a first catalytic module having an inlet disposed in fluid communication with the exhaust passageway for receiving exhaust from the exhaust passageway;a first device for introducing an oxidant into the exhaust of the first catalytic module;a second device for mixing the introduced oxidant with the exhaust of the first catalytic module;a second catalytic module concentric with the first catalytic module such that heat transfer is facilitated between the first and second catalytic modules while exhaust is prevented from flowing radially between the first and second catalytic modules; anda housing positioned between the first catalytic module and the second catalytic module for diverting the exhaust from an outlet of the first catalytic module to an inlet of the second catalytic ...

HONEYCOMB BODIES HAVING AN ARRAY OF THROUGH CHANNELS WITH A RANGE OF HYDRAULIC DIAMETERS

A ceramic honeycomb body, suitable for use in exhaust gas processing, includes a honeycomb structure having a plurality of through-channels, a first portion of the plurality of through-channels have a first hydraulic diameter dh, a second portion of the plurality of through-channels have a second hydraulic diameter that is smaller than the first hydraulic diameter dh, the first hydraulic diameter dh is equal to or greater than 1.1 mm, and the first and second portions of through-channels, taken together, have a geometric surface area GSA greater than 2.9 mm. Diesel oxidation catalysts and methods of soot removal are also provided, as are other aspects. 1. A honeycomb body , comprising: {'sup': '−1', 'a plurality of channels disposed in parallel to each other in an axial direction, wherein a first portion of the plurality of channels have a dh≥1.1 mm, a second portion of the plurality of channels have a dh<1.1 mm, and the plurality of channels comprise GSA≥2.9 mm, wherein dh is hydraulic diameter and GSA is a geometric surface area.'}, 'a honeycomb structure comprising a plurality of unit channel structures disposed in a repeating pattern, each unit channel structure comprising2. The honeycomb body of claim 1 , wherein the plurality of channels extend from an inlet face to an outlet face.3. The honeycomb body of claim 1 , wherein every channel of the plurality of channels is a flow-through channel.4. The honeycomb body of claim 1 , wherein every channel of the plurality of channels is devoid of plugging.5. The honeycomb body of claim 1 , wherein at least a portion of the plurality of channels have a catalytic coating disposed thereon.6. The honeycomb body of claim 1 , wherein the honeycomb body comprises:{'sup': '2', 'CD≥62.0 cm(400 cpsi);'}{'sup': 2', '2, 'the first portion of the plurality of channels comprise 6.2 channels/ cm(40 cpsi)≤CD≤46.5 channels/ cm(300 cpsi); and'}3%≤CR≤40% wherein CR is a channel ratio of a total cross-sectional area of the first portion ...

SYSTEMS AND METHODS FOR CONVERTING SHEAR FLOW INTO AXIAL FLOW IN AN EXHAUST SYSTEM

An aftertreatment system includes an exhaust conduit and a vane plate. The vane plate is located in the exhaust conduit. The vane plate includes a plurality of first vanes. The vane plate includes a plurality of second vanes that intersects the plurality of first vanes. The plurality of first vanes and the plurality of second vanes form a plurality of channels. The vane plate is configured to redirect flow of exhaust gas through the exhaust conduit to be in an axial direction of the exhaust conduit. 1. An aftertreatment system comprising:an exhaust conduit; and a plurality of first vanes; and', 'a plurality of second vanes that intersect the plurality of first vanes;', 'wherein the plurality of first vanes and the plurality of second vanes form a plurality of channels;, 'a vane plate located in the exhaust conduit, the vane plate comprisingwherein the vane plate is configured to redirect flow of exhaust gas through the exhaust conduit to be in an axial direction of the exhaust conduit.2. The aftertreatment system of claim 1 , wherein:an angle between a first direction in which the plurality of first vanes extend and a second direction in which the plurality of second vanes extend is in a range of 80° to 100°.3. The aftertreatment system of claim 1 , wherein:each of the plurality of channels has a rectangular cross-section.4. The aftertreatment system of claim 3 , wherein:each of the plurality of channels has a depth in a range of 10 mm to 80 mm in the axial direction of the exhaust conduit.5. The aftertreatment system of claim 3 , wherein:each of the plurality of channels has a length and a width in a range of 5 mm to 105 mm in a direction perpendicular to the axial direction of the exhaust conduit.6. The aftertreatment system of claim 3 , wherein:each of the plurality of channels has a depth in a range of 10 mm to 80 mm in the axial direction of the exhaust conduit; andeach of the plurality of channels has a length and a width in a range of 5 mm to 105 mm in a ...

Honeycomb structural body

A honeycomb structural body has plural cell density sections having a cell density which is changed stepwise in a radial direction. A partition wall is formed between adjacent cell density sections. The cell density sections have a high cell density section having a maximum cell density, excepting an outermost cell density section formed at an outermost side, and a low cell density section having a minimum cell density, excepting an innermost cell density section formed at an innermost side. A relationship of V−Va≧Vb+Vs is satisfied, where V indicates a volume of the honeycomb structural body if the overall honeycomb structural body is composed of the high cell density section, Va indicates a volume of the high cell density section, Vb indicates a volume of the cell density section, and Vs indicates a volume of the boundary wall which separates the low cell density section from the cell density section formed immediately inside of the low cell density section.