МНОГОЦИЛИНДРОВЫЙ ДВИГАТЕЛЬ ВНУТРЕННЕГО СГОРАНИЯ, ТРАНСПОРТНОЕ СРЕДСТВО, МОРСКОЕ СУДНО И СПОСОБ ВЫПУСКА ДЛЯ МНОГОЦИЛИНДРОВОГО ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к многоцилиндровым двигателям внутреннего сгорания, которые могут быть использованы на транспортных средствах, в частности на морских судах. Многоцилиндровый двигатель внутреннего сгорания содержит множество камер сгорания, каждая из которых имеет, по меньшей мере, одно выпускное отверстие, множество выпускных клапанов, каждый из которых выполнен с возможностью открытия или закрытия выпускного отверстия, и выпускной канал для направления отработанного газа, выпущенного из каждой из камер сгорания через выпускное отверстие. Выпускной канал содержит сужающуюся секцию, имеющую площадь поперечного сечения для потока, меньшую на ее выходном конце, чем на ее входном конце, расширяющуюся секцию, расположенную дальше по потоку относительно сужающейся секции и имеющую площадь поперечного сечения для потока, большую на ее выходном конце, чем на ее входном конце, и выпускную соединительную секцию, расположенную ближе по потоку относительно расширяющейся секции, для соединения ...

УСТРОЙСТВО И СПОСОБ РЕГЕНЕРАЦИИ ФИЛЬТРА ТВЕРДЫХ ЧАСТИЦ, РАСПОЛОЖЕННОГО В ЛИНИИ ОТРАБОТАННОГО ГАЗА ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Изобретение относится к устройству и способу для регенерации фильтра твердых частиц, расположенного в линии отработанного газа двигателя внутреннего сгорания, с по меньшей мере одним расположенным выше по потоку, чем фильтр твердых частиц, катализатором окисления NO для окисления NO, в частности до NO. Согласно способу по изобретению выше по потоку, чем фильтр (6) твердых частиц, предусмотрено, кроме того, по меньшей мере одно нагревательное устройство (8; 19), с помощью которого подходящий к фильтру (6) твердых частиц поток отработанного газа (2'") нагревается до определенной температуры в зависимости от определенных параметров регенерации, в частности в зависимости от степени заполнения фильтра (6) твердых частиц и/или от степени эффективности, основанной на NOрегенерации фильтра (6) твердых частиц, с помощью по меньшей мере одного катализатора (4) окисления NO, образующего NO. Техническим результатом изобретения является обеспечение конструктивно простой и компактной, безопасной в функционировании ...

СИСТЕМА ОБРАБОТКИ ОТРАБОТАВШИХ ГАЗОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ С КАТАЛИТИЧЕСКИМ НЕЙТРАЛИЗАТОРОМ

Полезная модель относится к машиностроению, а именно к двигателестроению, и может быть использована для очистки отработавших газов двигателей внутреннего сгорания с использованием каталитического нейтрализатора. Система обработки отработавших газов двигателя внутреннего сгорания с каталитическим нейтрализатором содержит трубопровод системы выпуска, связанный с двигателем (1) внутреннего сгорания, перепускное устройство (2), электромагнитный клапан (3) для управления подвода давления сжатого воздуха к перепускному устройству (2), двухступенчатый каталитический нейтрализатор (4). Система обработки отработавших газов также содержит электромагнитный клапан (5) подачи воздуха в каталитический нейтрализатор (4), датчик (6) температуры отработавших газов на выходе из двигателя (1) внутреннего сгорания, систему (7) фильтрации подводимого атмосферного воздуха. Датчик (6) температуры отработавших газов расположен на трубопроводе выхода отработавших газов из двигателя (1) внутреннего сгорания и связан с электронным блоком (8) управления. Система (7) фильтрации подводимого атмосферного воздуха расположена над каталитическим нейтрализатором (4) и связана трубопроводами с двигателем (1) внутреннего сгорания. Электромагнитный клапан (5) связан с цилиндропоршневой частью (9) двигателя (1) внутреннего сгорания и электронным блоком (8) управления. Каталитический нейтрализатор (4) состоит из двух пористых каталитических блоков: металлокерамического окислительного блока (10) и восстановительного блока (11), а между металлокерамическим окислительным блоком (10) и восстановительным каталитическим блоком (И) расположен смеситель (12). Каталитический нейтрализатор (4) имеет корпус с внешней стенкой (13) и внутренней стенкой (14), которые установлены с зазором (15), торцевые крышки (16), входной патрубок (17) и выходной патрубок (18). Входной патрубок (17) и выходной патрубок (18) выполнены вдоль корпуса каталитического нейтрализатора (4). Зазор (15) служит теплоизоляцией и выполнен по ...

МНОГОЦИЛИНДРОВЫЙ ДВИГАТЕЛЬ ВНУТРЕННЕГО СГОРАНИЯ, ТРАНСПОРТНОЕ СРЕДСТВО, МОРСКОЕ СУДНО И СПОСОБ ВЫПУСКА ДЛЯ МНОГОЦИЛИНДРОВОГО ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

... 1. Многоцилиндровый двигатель внутреннего сгорания, содержащий: ! множество камер сгорания, каждая из которых имеет, по меньшей мере, одно выпускное отверстие; ! множество выпускных клапанов, каждый из которых выполнен с возможностью открытия или закрытия выпускного отверстия; и ! выпускной канал для направления отработанного газа, выпущенного из каждой из камер сгорания через выпускное отверстие; ! при этом ! выпускной канал содержит: ! сужающуюся секцию, имеющую площадь поперечного сечения для потока, меньшую на ее выходном конце, чем на ее входном конце; ! расширяющуюся секцию, расположенную дальше по потоку относительно сужающейся секции и имеющую площадь поперечного сечения для потока, большую на ее выходном конце, чем на ее входном конце; и ! выпускную соединительную секцию, расположенную ближе по потоку относительно расширяющейся секции, для соединения множества камер сгорания, периоды открытия выпускных отверстий которых не перекрываются, и не соединения множества камер сгорания ...

СПОСОБ И УСТРОЙСТВО ДЛЯ РЕГЕНЕРАЦИИ РАСПОЛОЖЕННОГО В ВЫПУСКНОМ ТРАКТЕ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ ФИЛЬТРА ТВЕРДЫХ ЧАСТИЦ

... 1. Способ регенерации расположенного в выпускном тракте двигателя внутреннего сгорания фильтра твердых частиц по меньшей мере с одним расположенным по потоку перед фильтром (3) твердых частиц катализатором (6) окисления NO, в частности, в NO2, через который проходит поток (15) отработавших газов, отличающийся тем, что предусматривают по меньшей мере одно расположенное по потоку перед фильтром (3) твердых частиц нагревательное устройство (8), в частности нагревательный катализатор, через которое пропускают дополнительный поток (14) газа и с помощью которого дополнительный поток (14) газа нагревают, при этом нагретый дополнительный поток (14) газа смешивают по потоку перед фильтром (3) твердых частиц с приходящим из катализатора (6) окисления NO, в частности насыщенным NO2 потоком (15) отработавших газов. ! 2. Способ по п.1, отличающийся тем, что дополнительный поток (14) газа ответвляют от потока свежего воздуха на стороне наддува воздуха или от имеющегося по потоку ниже вхождения трубопровода ...

Pump supplying additional air to IC engine exhaust system - has pump which operates on air intake pulsations, fitted in air intake chamber, which feeds cylinder inlet pipes

Additional air is fed to the exhaust system (3) of an IC engine (1) for a pump (10), that is operated by the pulsations in the engine air intake system (2). The pump sucks air via a check valve (13) into a pump chamber (11) and forces it via a further check valve (14) to the exhaust. The pump is fitted to the air chamber (5) feeding the cylinder inlet pipes (6). ADVANTAGE - Positioning of the pump permits a greater pumped airflow.

Auxiliary device for exhaust collector, has pipe which is connected with exhaust collector in such a manner that fresh air is discharge into exhaust collector whereby air filter is provided for cleaning of inflowing fresh air

Auxiliary device has a pipe (13) which is connected with exhaust collector in such a manner that fresh air is discharge into exhaust collector. Auxiliary device is provided with an air filter (11) for cleaning of inflowing fresh air whereby a coupling tube (14) is firmly connected with the exhaust collector.

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.

Regenerierungssystem

Regenerierungssystem mit einer Ansaugluftquelle (38), einer Motorbremse (32), die zum Verringern der Drehzahl eines Motors (18) durch eine Verdichtung und ein Auslassen der Ansaugluft ausgebildet ist, einem Ventil (64), das zum Umleiten eines Teils der Ansaugluft zu einer Hilfsvorrichtung (60) ausgebildet ist, einer Steuerung (30), die mit der Motorbremse und dem Ventil in Verbindung steht, wobei die Steuerung dazu ausgebildet ist, das Ventil zum Verringern des zu der Hilfsvorrichtung umgeleiteten Teils der Ansaugluft zu bewegen, wenn die Motorbremse aktiv ist.

Abgas - Fahrtwind - Injektor

Abgas-Fahrtwind-Injektor, an einem Abgassystem montiert, dadurch gekennzeichnet, dass der Lufteintritt mittels einer Schlauchleitung mit dem Injektor verbunden ist, der Injektor ist im Rohr eines Abgassystems so konstruiert, dass sein Ende zum Abgasaustritt zeigt.

Vorrichtung zur katalytischen Reinigung der Auspuffgase von Verbrennungsmotoren

Einrichtung zum Nachbehandeln von Abgasen

Einrichtung zum Nachbehandeln von Abgasen einer selbstzündenden Brennkraftmaschine mit einem Abgassammelsystem (1), in dem ein Reduktionskatalysator (2) zur Reduktion von NOx-Bestandteilen des Abgases der Brennkraftmaschine angeordnet ist, mit einer Dosiereinrichtung bestehend aus einem elektrisch gesteuerten Dosierventil (6) zum dosierten Einbringen eines Reduktionsmittels in den Strom des dem Katalysator (2) zugeführten Abgases in Abhängigkeit von in einem Kennfeld gespeicherten Werten des NOx-Gehalts im Abgas bei verschiedenen Betriebsparametern der Brennkraftmaschine und des Katalysators und aus einer von einem Ventil gesteuerten Luftzufuhr aus einer Druckluftquelle (18), mit der die an der Austrittsseite (36) des elektrisch gesteuerten Dosierventils (6) austretenden Reduktionsmittelmengen fein mit Luft verteilt dem Abgas zugeführt werden, dadurch gekennzeichnet, dass das Ventil zur Steuerung der Luftzufuhr ein elektrisch gesteuertes Steuerventil (5) ist, das stromabwärts der Austrittsöffnung ...

Partikelfilterbaugruppe für Kraftfahrzeug, Kraftfahrzeug und Verfahren zum Regenerieren eines Partikelfilters

Es wird eine Partikelfilterbaugruppe (14) für ein Kraftfahrzeug (10) angegeben, mit mindestens einem Partikelfilter (20), mindestens einer abgasführenden Leitung (18), die in den Partikelfilter (20) mündet und mindestens einer Sekundärluftzuführung (30), die separat zur abgasführenden Leitung (18) ausgebildet ist, wobei dem Partikelfilter (20) über die Sekundärluftzuführung (30) Frischluft zuführbar ist, und wobei ein Abgriff der Frischluft in einer Ladeluftleitung nach einem Verdichter (44) eines Verbrennungsmotors (12) erfolgt. Des Weiteren werden ein Kraftfahrzeug (10) mit einem Partikelfilter (20) und ein Verfahren zum Regenerieren eines Partikelfilters angegeben.

Verfahren für den Betrieb einer Abgasreinigungsvorrichtung und Abgasreinigungsvorrichtung

Verfahren für den Betrieb einer Abgasreinigungsvorrichtung (10) eines Fahrzeugs, aufweisend die folgenden Schritte:- Überwachen eines motornahen Lambda-Wertes (Ln) einer motornahen Katalysatorvorrichtung (20),- Betreiben der motornahen Katalysatorvorrichtung (20) mit Kraftstoffüberschuss,- Kühlen des Abgasstroms zwischen der motornahen Katalysatorvorrichtung (20) und der motorfernen Katalysatorvorrichtung (30),- Überwachen eines motorfernen Lambda-Wertes (Lf) einer motorfernen Katalysatorvorrichtung (30),- Betreiben der motorfernen Katalysatorvorrichtung (30) in stöchiometrischer Betriebsweise.

Aussenbordmotor

Method for regulating the oxidation of exhaust gas

... 945,559. Consuming waste gases. UNIVERSAL OIL PRODUCTS CO. Feb. 28, 1961 [Feb. 29, 1960], No. 7234/61. Heading F4B. [Also in Division F1] In a method of regulating the oxidation of exhaust gas issuing from the incomplete combustion of fuel at variable rate, oxygen-containing gas is aspirated into a low pressure diffusion zone through inlet opening 12, Fig. 1, by a jet 3 of exhaust gas, the mass ratio of the aspirated gas to the exhaust gas being increased by the reduction of the effective cross-sectional area of the jet whenever the exhaust gas flow diminishes and vice versa. Line 11 is connected to a point between an engine exhaust manifold and the jet 3, or to the engine exhaust manifold, and the pressure variations therein cause a spring- loaded piston 10 to rotate disc 4 to reduce the jet area through a rack and pinion 7, 8. In modifications, air is aspirated through more than one inlet 12 or through an annular open space between inlet conduit 1 and diffuser 13 and the disc 4 may be ...

Exhaust manifold device

Improvements in means for treating the exhaust gases of internal combustion engines

... 411,377. Treating exhaust gases. LANGTON, H. M., 26, Devonshire Terrace, Lancaster Gate, London, LUSH, E. J., The Laboratory, Powder Mill Lane, Dartford, Kent, and WATSON, G. P., Sandybank, Banks Road, Sandbanks, Bournemouth. Nov. 18, 1933, No. 32902. Divided on 413,744. [Class 7 (ii).] Exhaust gases are passed through or over two or more catalysts in series, or are wholly or partially byepassed around the whole or part of one or more of said catalysts. The gases pass into a pipe 3 from the cylinders through apertures 2 separated by partitions 7 of wire mesh, pumice, or asbestos which carry a catalyst operative at high temperatures, such as iron vanadate, and are mixed with air drawn in past a non-return valve 9 or forced in by a pump. A chamber 4 is mounted over a projecting end of the pipe 3, and a ringed valve 5 located at the end of the pipe causes the gases to pass through perforations and through or around carriers 8 of asbestos mat impregnated with a catalyst operative at low temperatures ...

A CATALYTIC CONVERTER

Supplying secondary air to exhausts

Supplying secondary air to exhausts

Reducing light-off time of a catalytic converter

In an internal combustion engine having an exhaust gas catalytic converter and fitted with an afterburner to assist in raising the temperature of the catalytic converter during cold starts, an ozonizer 42 is provided for ozonizing the additional air mixed with the exhaust gases in the afterburner to improve the ignitability of the mixture in the afterburner. An additional ozonizer 40 is located in the air filter casing 12. ...

Catalytic converter

A catalytic converter having a casing 1 housing which has an inlet 2 and an outlet 3 for the flow of exhaust gases therethrough and a plurality of catalyst coated plates provided within the casing. The plates have a series of apertures 6 the flow of gas therethrough and the plates are arranged so that the apertures 6 in one plate are offset from the apertures 6 in an adjacent plate. Hence, as gas flows through the plates, it passes through one plate and impinges on the surface of the adjacent plate. The plates may either be flat plates, (this enhances turbulence between the plates) or they may have protrusions for example cone shaped or pyramid protrusions which allow smoother gas flow characteristics. The converter may have a single chamber or alternatively a converter design with three chambers all comprising such plates is described. This three-chamber configuration is capable of five-way catalysis. The principles of the catalytic converter can also be applied to a mixing component which ...

System and method for producing diesel exhaust for testing diesel engine after treatment devices

A method of using a burner-based system to produce diesel exhaust gas that contains particulate matter of a desired composition, to simulate the PM matter in exhaust produced by a production-type diesel internal combustion engine.

Hydrogen supply unit for internal combustion engine and method of operating internal combustion engine

APPARATUS FOR IMPROVING PERFORMANCE OF IC ENGINE

EXHAUST CATALYST BY-PASS VALVE

... 1331885 Treating exhaust gas FORD MOTOR CO Ltd 4 May 1972 20822/72 Heading F1B [ Also in Division F2] The exhaust gases of an I. C. engine 10 are normally delivered from manifold 12 through a first catalytic converter 13 for reducing oxides of nitrogen and through a second catalytic converter 14 for oxidising the hydrocarbon and carbon monoxide present, whereafter they are discharged through a silencer 19 and tail pipe 20. If the system is in danger of overheating, a three-way 15 (see Division F2) closes the connection between the converters and silencer and connects the latter to a by-pass line 16. During engine warm-up air may be supplied to one or both converters via line 17. Exhaust gas may be recirculated to inlet manifold 11 via pipe 18.

A VALVE

Improvements in or relating to catalytic fume incineration

A catalytic fume incinerating assembly comprises parallel metallic screens 5, 6, Fig. 2, and a filling of metallic wire 7 composed of a core of a nickel-chromium or nickel-chromium-iron alloy with a coating of amorphous platinum, palladium, osmium, rhodium, iridium, or mixtures thereof. The wire filling may be arranged in regular bends, as shown, or irregularly. The noble metal may be deposited on the base metal by the process described in Specification 775,550. The assembly is used for the treatment of air streams containing volatile combustible materials, e.g. exhausts from ovens used for drying and baking of enamels, varnishes, &c., for the elimination of air pollution or for the utilisation of the heat of combustion. Fig. 5 shows a drying oven of the recirculating type. Material to be dried is carried on belt B and passes through oven O which is divided above perforated partition ...

EXHAUST EMISSION METHOD AND APPARATUS

... 1456025 Supplying additional air OUTBOARD MARINE CORP 21 Nov 1973 [13 Dec 1972] 54016/73 Heading B1W [Also in Division F1] An I.C. engine comprises a combustion chamber an exhaust port communicating with said chamber and communicating with an exhaust gas discharge system through which successive pulses of exhaust gas flow in response to periodic opening of the exhaust port, the discharge system including means operable subsequent to opening of the exhaust port for generating a returning negative pressure wave travelling in the discharge system toward the exhaust port, and the system also including normally-closed port means located in spaced relation from the exhaust port, which port means are opened in response to the returning negative pressure wave to introduce air into the discharge system. An exhaust passage 119 connected to the exhaust port of a two-stroke engine has an open end 123 and an air inlet port 127. A reed valve 131 is mounted inside the passage and allows air to enter during ...

Catalyst Protection System From Oxygen Deprived Exhaust

Internal combustion enigne, vehicle, marine vessel, and exhausting method for internal combustion engine

Internal combustion engine, vehicle marine vessel,and secondary air supply method for internal comb ustion engine

Internal combustion engine, vehicle, marine vessel, and exhaust gas cleaning method for internal combustion engine.

Multi-cylinder internal combustion engine, vehiclemarine vessel and exhausting method for multi-cyl inder internal combustion engine

Internal combustion engine, vehicle, marine vessel, and exhausting method for internal combustion engine

Internal combustion engine, vehicle, marine vessel, and secondary air supply method for internal combustion engine

Internal combustion engine, vehicle, marine vessel, and exhaust gas cleaning method for internal combustion engine

Multi-cylinder internal combustion engine, vehicle, marine vessel, and exhausting method for multi-cylinder internal combustion engine

SADDLE TYPE VEHICLE

Saddle type vehicle.

Multi-cylinder internal combustion engine, vehicle, marine vessel, and exhausting method for multi-cylinder internal combustion engine

Internal combustion engine, vehicle, marine vessel, and exhaust gas cleaning method for internal combustion engine

Internal combustion engine, vehicle, marine vessel, and exhausting method for internal combustion engine

Internal combustion engine, vehicle, marine vessel, and secondary air supply method for internal combustion engine

Saddle type vehicle.

Saddle type vehicle.

Internal combustion engine, vehicle, marine vessel, and exhaust gas cleaning method for internal combustion engine

Internal combustion engine, vehicle, marine vessel, and exhausting method for internal combustion engine

Multi-cylinder internal combustion engine, vehicle, marine vessel, and exhausting method for multi-cylinder internal combustion engine

Internal combustion engine, vehicle, marine vessel, and secondary air supply method for internal combustion engine

PROCEDURE AND DEVICE FOR THE OXIDATION OF CARBON MONOXIDE AND HYDROCARBONS, IN SPECIAL ONE FOR THE REDUCTION OF THE POLLUTANTS IN THE EXHAUST GASES OF MOTOR VEHICLES

PROCEDURE FOR NACHEINSPRITZUNG HYDROCARBONS SUITABLE BY FOR RECOVERY, ALCOHOLS AND/OR REDUCING AGENTS (E.G. DIESEL FUEL AND/OR UREA AND/OR AMMONIAKALI SOLUTION) TO THE REGENERATION OF EXHAUST FILTER SYSTEMS IN DIESEL ENGINES

EMISSION CONTROL DEVICE FOR A MOTORCYCLE AND WITH SUCH A EMISSION CONTROL DEVICE EQUIPPED MOTORCYCLE

WASTE GAS SYSTEM

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

A method for flushing a exhaust gas purifying system

Verfahren zum Spülen eines einen katalytischen Konverter (1) mit wenigstens einem Katalysatorbett (2) umfassenden Abgasreinigungssystems (3) einer Brennkraftmaschine (4), wobei in einer aktiven Betriebsphase des Abgasreinigungssystems (3) dem Abgasreinigungssystem (3) ein Abgas der Brennkraftmaschine (4) zugeführt wird und in einer passiven Betriebsphase des Abgasreinigungssystems (3) dem Abgasreinigungssystem (3) kein Abgas zugeführt wird, wobei eine Temperatur (T) des wenigstens einen Katalysatorbetts (2) ermittelt wird und das Spülen in Abhängigkeit von der ermittelten Temperatur (T) erfolgt, wobei das Abgasreinigungssystem (3) in der passiven Betriebsphase des Abgasreinigungssystems (3) durch eine Spülvorrichtung, welche mit einer Abgasleitung verbunden ist, gespült wird.

EMISSION CONTROL DEVICE FOR A COMBUSTION ENGINE AND PROCEDURE FOR YOUR CONTROL

REGENIERUNG OF DUST COLLECTOR, IN PARTICULAR FOR DIESEL ENGINES.

EXHAUST MANIFOLD CONNECTING CONSTRUCTION WITH AIR GAP

DEVICE TO THE AIR SUPPLY IN THE EXHAUST MANIFOLD OF AN INTERNAL-COMBUSTION ENGINE.

EXHAUST MANIFOLD DEVICE

CATALYTIC GAS TURBINE COMBUSTION CHAMBER

Device for the catalytic burn of the exhaust gases of internal-combustion engines

Gas-dynamic pressure-wave machine

Improvements in emissions control

APPARATUS FOR INCREASING REGENERATIVE FILTER HEATING ELEMENT TEMPERATURE

CATALYTIC CONVERTER WITH UNIFORM AIR DISTRIBUTION AND MIXING WITH THE EXHAUST GASES

EXHAUST CATALYST PRE-HEATING SYSTEM AND METHOD

A system and method according to which exhaust is directed from a stationary exhaust source and through a burner, and a combustible fluid is vented from at least one combustible fluid source other than the stationary exhaust source. The combustible fluid is captured and directed to flow from the combustible fluid source and towards the burner, and at least air is mixed with the captured combustible fluid to form a mixture. The mixture is introduced into the burner and burned therein to thereby pre-heat the exhaust flowing therethrough. The pre-heated exhaust contacts a catalyst.

AGRICULTURAL EXHAUST CONDITIONING SYSTEM

An exhaust conditioning system for use with a tractor towing an air seeding implement comprises an exhaust duct arranged to communicate exhaust emissions from the engine of the tractor to the seed fan of the air seeding implement. A condenser receives the exhaust emissions of the exhaust duct therethrough between the engine and the seed fan. A condenser fan cools a surface of the condenser. A computer controller controllably varies a rate of at least one of the condenser fan, the seed fan or revolutions per minute of the engine responsive to a sensed temperature of the exhaust emissions to maintain the temperature of the exhaust emissions within a selected temperature range and such that the exhaust emissions are arranged to influence germination of the seeds either by humidity, oxidised organic matter or bio-char.

TREATMENT OF GASEOUS EFFLUENT

REED VALVE ASSEMBLY FOR EXHAUST SYSTEM SECONDARY AIR

INTERNAL COMBUSTION ENGINE AND METHOD OF OPERATION FOR EXHAUST EMISSION CONTROL

PARTICULATE TRAP REGENERATION APPARATUS AND METHOD

Particulate Trap Regeneration Apparatus and Method Prior art trap regeneration devices employ one or two relatively large ceramic trap cores, and a regeneration cycle that burns off the soot in a direction that subjects the porous walls to excessive temperature spikes. Moreover, during regeneration it is normal to bypass dirty exhaust gas directly to the atmosphere. In a first embodiment the subject trap regeneration apparatus (10) includes an electrical heating element (82) and a reverse flow device (92) for each of a plurality of relatively smaller trap cores (61) arranged in a housing (12), with each reverse flow device (92) constructed for directing a source of air (180) at a controlled rate toward the normal second end (63) of the trap core (61), heating the air, forcing the heated air through the trap core (61) to the first end (62), and to controllably burn out particulate matter while the remaining trap cores (61) are functioning to filter the exhaust gases in the normal flow direction ...

HEATER AND CATALYTIC CONVERTER

A heater is composed of (a) a honeycomb structure having a large number of passages, (b) an adsorbent composed mainly of zeolite or an adsorbent-catalyst composition comprising said adsorbent and a catalyst component supported on the adsorbent, coated on the honeycomb structure and (c) at least two electrodes for electrification of the honeycomb structure, fixed to the honeycomb structure, in which heater a gas is allowed to flow through the passages in the honeycomb structure and heated. A catalytic converter has at least one main monolith catalyst and the above heater provided upstream or downstream of the main monolith catalyst or between the main monolith catalysts. A catalytic converter for purification of automobile exhaust gas, has (a) at least one main monolith catalyst, (b) a honeycomb heater comprising a honeycomb structure having a large number of passages and at least two electrodes for electrification fixed to the honeycomb structure and (c) an adsorbent composed mainly of ...

SIDE CHANNEL BLOWER

A side channel blower, preferably for burners for cleaning soot particle filters mounted in exhaust gas lines of vehicles by burning off, is shown, in which a chamber housing (6) with a chamber (5) is arranged on the air discharge side, wherein air flows into said chamber from the side channel blower (1) and said chamber permits adjustable return of air from said chamber into the annular channel (8) via a bypass (12, 13) and return of additional air, also into said annular channel (2), via an air transfer channel (9) that can be closed with a valve (16), and the air delivered can be fed from said chamber to the filters for cleaning by burning off via two air discharge openings (8a, 8b), which can be closed such that one discharge opening is open and the other discharge opening is closed.

OUTBOARD MOTOR HAVING CATALYTIC CONVERTER

An outboard motor includes an exhaust emission control system which is arranged rationally and neatly in the housing of an outboard motor body, irrespective of various limitations on the outside shape of the housing. An oil pan disposed below an engine of the outboard motor has an oil holding portion, and an exhaust pipe is disposed vertically along a vertical wall portion of the oil holding portion. A catalytic converter is disposed in an intermediate portion of the exhaust pipe in confronted relation to the vertical wall portion. The catalytic converter has a particular shape in horizontal section which is greater in side in a first direction than in a second direction perpendicular to the first direction. A fresh-air delivery passage is provided for introducing fresh air into an exhaust passage disposed upstream of the exhaust pipe. The fresh-air delivery passage is connected at one end to the top plate of an intake box and includes a check valve disposed at an intermediate portion of ...

OUTBOARD MOTOR HAVING CATALYTIC CONVERTER

An outboard motor includes an exhaust emission control system which is arranged rationally and neatly in the housing of an outboard motor body, irrespective of various limitations on the outside shape of the housing. An oil pan disposed below an engine of the outboard motor has an oil holding portion, and an exhaust pipe is disposed vertically along a vertical wall portion of the oil holding portion. A catalytic converter is disposed in an intermediate portion of the exhaust pipe in confronted relation to the vertical wall portion. The catalytic converter has a particular shape in horizontal section which is greater in side in a first direction than in a second direction perpendicular to the first direction. A fresh-air delivery passage is provided for introducing fresh air into an exhaust passage disposed upstream of the exhaust pipe. The fresh-air delivery passage is connected at one end to the top plate of an intake box and includes a check valve disposed at an intermediate portion of ...

EXHAUST GAS PURIFIER

An exhaust purification apparatus comprising an expansion pipe and a thin catalyst in the exhaust system of an internal combustion engine. Two openings for discharging an exhaust gas are formed in the peripheral wall of the expansion pipe at the end thereof on the upstream side in its longitudinal direction, and center portions of gaspermeable thin catalyst in their transverse direction are disposed separately round the expansion pipe in such a manner as to oppose the openings for the exhaust gas. Both side portions of the thin catalyst are curved towards the expansion pipe and are welded integrally to the outer peripheral surface. The outer periphery of the thin catalyst is sealed by a thin sealing plate as a seal member, and an opening is formed in the sealing plate on the opposite side to the openings for the exhaust gas of the expansion pipe. A communication pipe whose upper end is fitted into the opening of the thin sealing plate penetrates through an opening of a muffler casing which ...

EXHAUST GAS PURIFIER

An exhaust purification apparatus comprising an expansion pipe and a thin ca talyst in the exhaust system of an internal combustion engine. Two openings for discharging an exhaust gas are formed in the peripheral wall of the expansion pipe at the end thereof on the upstream side in its longitudin al direction, and center portions of gas- permeable thin catalyst in their transverse direction are disposed separatel y round the expansion pipe in such a manner as to oppose the openings for the exhaust gas. Both side portions of the th in catalyst are curved towards the expansion pipe and are welded integrally to the outer peripheral surface. The outer p eriphery of the thin catalyst is sealed by a thin sealing plate as a seal member, and an opening is formed in the sealing plate on the opposite side to the openings for the exhaust gas of the expansion pipe. A communication pipe whose upper end is fitted into the opening of the thin sealing plate penetrates through an opening of a muffler casing ...

Vorrichtung zur katalytischen Entgiftung und Desodorierung von Industrie- und Heizungsabgasen

Vorrichtung zur katalytischen Verbrennung der Abgase von Brennkraftmaschinen

Verfahren zur Verringerung des Gegendruckes der Abgase sowie Abgasanlage für einen Verbrennungsmotor

NACHVERBRENNUNGSANLAGE FUER VERBRENNUNGSMOTOREN.

COMPOSITION CATALYTIQUE, PROCEDE POUR SA PREPARATION, ET UTILISATION DE CETTE COMPOSITION CATALYTIQUE.

Katalysatorfreie Abgas-Nachbrennvorrichtung

Einrichtung zur Reinigung der Abgase von Verbrennungsmotoren von Fahrzeugen, die durch einen Strassentunnel fahren

Vehicle exhaust system with gas cleaner

Vehicle exhaust system with gas cleaner has exhaust pipe connected to ram effect or fan operated fresh air pipe ...

System for injecting a liquid into a conduit.

Die Erfindung betrifft ein System zum Einspritzen einer Flüssigkeit in eine Leitung, vorzugsweise zum Einspritzen eines flüssigen Reduktionsmittels in eine Abgasleitung einer Brennkraftmaschine, wobei das System eine Gaspumpe (11), eine Flüssigkeitspumpe (21), einen Injektor (50), eine von der Flüssigkeitspumpe zum Injektor führende Flüssigkeitsleitung (40) und eine von der Gaspumpe zum Injektor führende Gasleitung (10) aufweist, wobei in der Flüssigkeitsleitung oder innerhalb des Injektors ein steuerbares Sperrventil (25) angeordnet ist, um einen Flüssigkeitsstrom zum Injektor oder durch den Injektor hindurch im Takt freigeben und blockieren zu können, und/oder wobei der Injektor eine zentrale Flüssigkeitsaustrittsöffnung zur Abgabe eines Flüssigkeitsstrahls in die Leitung aufweist, die von einem durch eine oder mehrere Gasaustrittsöffnungen gebildeten Ring umgeben ist, wobei die eine oder die mehreren Gasaustrittsöffnungen ausgebildet sind, einen kegelförmig zur Achse des Flüssigkeitsstrahls ...

УСТРОЙСТВО ДЛЯ ВЫХЛОПНОГО КОЛЛЕКТОРА

СЕЛЬСКОХОЗЯЙСТВЕННАЯ СИСТЕМА КОНДИЦИОНИРОВАНИЯ ВЫБРОСОВ ВЫХЛОПНЫХ ГАЗОВ

Предложена система кондиционирования выхлопов для использования с трактором, тянущим пневматическую сеялку, причем система содержит выхлопной канал для подачи выбросов выхлопных газов от двигателя трактора на засевной вентилятор пневматической сеялки. В конденсатор подают выбросы выхлопных газов через выхлопной канал между двигателем и засевным вентилятором. Вентилятор конденсатора охлаждает поверхность конденсатора. Компьютерный контроллер контролируемо меняет скорость по меньшей мере одного из вентиляторов конденсатора, засевного вентилятора или частоту вращения двигателя при изменении замеренной температуры выхлопных газов для поддержания температуры выхлопных газов в пределах выбранного диапазона температур и таким образом, чтобы выхлопные газы влияли на прорастание семян либо влажностью, либо окисленными органическими веществами, либо биоуглем.

Regeneration system and method for particulate traps

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

DEVICE Of GAS CLEANING Of EXHAUST Of an INTERNAL COMBUSTION ENGINE AND PROCEEDED OF REGENERATION Of SUCH a DEVICE

Device of additional gas introduction for internal combustion engine.

PROCEEDED OF CONTROL OF the OPERATION Of an AIR PUMP OF INTERNAL COMBUSTION ENGINE

Group generator-pump with air of purification for car

DRIVING EQUIPMENT HAS TURBOCOMPRESSOR FOR A VEHICLE

Treatment of exhaust gases - from internal combustion engines for removal of atmospheric pollutants

Exhaust purifying apparatus of saddle-ride type vehicle

An exhaust purifying apparatus achieving placement of components so as to prevent an increase in the size of the vehicle caused by the placement of the exhaust purifying apparatus while maintaining the performance of the exhaust purifying apparatus by secondary air in a saddle-ride type vehicle. An exhaust purifying apparatus of a saddle-ride vehicle includes a secondary air supply pipe of which one end is connected an exhaust passage of an internal combustion engine. A secondary air control valve is connected with the other end of the secondary air supply pipe for controlling the supply of secondary air to the secondary air supply pipe. An outdoor air introduction passage is connected to the secondary air control valve, wherein an air filter for secondary air and a resonant passage are installed in the middle of the outdoor air introduction passage.

EXTRACTION OF HOT GAS FOR REAGENT VAPORIZATION AND OTHER HEATED GAS SYSTEMS

A method to extract hot exhaust gas from the exhaust flue and use its heat energy to vaporize aqueous reactive reagents such as aqueous ammonia or to provide a heated air process gas mixture. Compressed air provides motive force to induce a vacuum in an ejector venturi device which draws hot exhaust gas (“hot gas”) from the exhaust flue. In one embodiment the hot gas is drawn into a vaporizer unit. The heat energy in the hot gas vaporizes the injected aqueous reagent. The vaporized mixture is drawn into the ejector and is entrained in the motive air. The diluted reagent vapor mixture is injected back into the exhaust flue to support the selective catalytic reduction (SCR) process and reduce nitrogen oxide (NOx). 1. A system for vaporizing reactive reagents for use in selective catalytic reduction systems without any moving mechanical parts becoming exposed to hot exhaust flue gas and/or reactive reagent vapor comprising:a first source of compressed gas;a venturi ejector having an input port, a suction port and an output port with the first source of compressed gas providing compressed gas to the input port;a hot gas inlet pipe for providing hot gas from an exhaust flue;a hot gas outlet pipe for reintroducing a gas mixture into the exhaust flue downstream of the hot gas inlet pipe whereby a vacuum at the suction port draws hot gas from the exhaust flue and through the hot gas inlet pipe and the compressed gas and hot gas mixture exiting the outlet port is forced through the hot gas outlet pipe and back into the exhaust flue; and a reactive reagent atomizing device within the reaction vessel; and', 'a source of reactive reagent operatively connected to the reactive reagent atomizing device., 'a reaction vessel having a gas inlet and a gas outlet disposed between the hot gas inlet pipe and the hot gas outlet pipe in fluidic communication therewith, the reaction vessel comprising2. The system according to claim 1 , wherein the atomizing device further comprises a ...

Operating method for a particle filter

The systems and methods herein relate the operation of a particle filter which is arranged in an exhaust-gas path of an internal combustion engine, to a device for exhaust-gas aftertreatment which can be operated in accordance with the method that comprises determining a mass flow rate of an exhaust-gas flow flowing in the exhaust-gas path; and supplying ambient air into the exhaust-gas path as a function of the determined mass flow rate. By this method, the spontaneous regeneration of a particle filter within the exhaust system may be abated.

Exhaust air injection

Embodiments for controlling exhaust air-fuel ratio are provided. In one example, an engine method comprises adjusting upstream exhaust air-fuel ratio to maintain a first emission control device at or below a threshold temperature, and when the upstream exhaust air-fuel ratio is below a threshold, injecting air into an exhaust passage between the first emission control device and a second emission control device to maintain downstream exhaust at a different, higher air-fuel ratio. In this way, excess emissions may be converted while maintain the emission control devices below a maximum temperature.

Metering System for Spraying a Urea Solution into the Exhaust Gas Stream of an Internal Combustion Engine

A metering system for injecting a urea solution into the exhaust gas flow of an internal combustion engine for selective catalytic reduction, and method for controlling the injecting of a urea solution by means of compressed air, wherein the metering system is connected to a urea solution tank and a compressed air supply, wherein the metering system comprises at least one nozzle through which the urea solution can be injected into the exhaust gas flow by compressed air, including an electronic control unit and air valve for regulating the pressure and/or the quantity of air and/or the valve opening times of the compressed air supply and a sensor for measuring the pressure and/or the quantity of air disposed in the compressed air supply between the air valve and the nozzle so that the quantity of compressed air fed in for atomizing the urea solution is controlled. 27. A metering system according to claim 1 , wherein the air valve () is a proportional control valve.316. A metering system according to claim 1 , wherein the sensor is a pressure sensor ().411. A metering system according to claim 1 , wherein the metering system has means for calculating the exhaust gas mass stream or a sensor () for measuring the exhaust gas mass stream.517. A metering system according to claim 1 , wherein the metering system has a sensor () for measuring the exhaust gas temperature.6615. A metering system according to claim 1 , wherein the compressed air supply () has a butterfly valve ().73. A metering system according to claim 1 , wherein the metering system has a metering pump () for supplying the urea solution.81341314. A metering system according to claim 1 , wherein a connecting line () is arranged between a urea line () and a line of the compressed air supply claim 1 , whereby the connecting line () has a nonreturn valve ().9. A metering system according to claim 1 , wherein the metering system has a compressed air compressor.10127153111617. A metering system according to claim 1 ...

Method for Operating a Petrol Engine, in Particular of a Motor Vehicle, and Motor Vehicle

A method for operating a petrol engine, in which air is introduced into an exhaust tract through which exhaust gas from the petrol engine can flow, bypassing the petrol engine, includes introducing the air into the exhaust tract at a point arranged downstream of a first three-way catalytic converter arranged in the exhaust tract and upstream of a second three-way catalytic converter arranged in the exhaust tract downstream of the first three-way catalytic converter, while the petrol engine is operated with a sub-stoichiometric combustion air ratio, where a desulphurization of the second three-way catalytic converter is effected. 110.-. (canceled)11. A method for operating a petrol engine , comprising the steps of:introducing air into an exhaust tract through which exhaust gas from the petrol engine flows, wherein the air is introduced into the exhaust tract at a point disposed downstream of a first three-way catalytic converter disposed in the exhaust tract and upstream of a second three-way catalytic converter disposed in the exhaust tract downstream of the first three-way catalytic converter, while the petrol engine is operated with a sub-stoichiometric combustion air ratio whereby desulphurization of the second three-way catalytic converter is caused;wherein the air is introduced into the exhaust tract via an air duct which is different from the exhaust tract and is fluidically connected to the exhaust tract;detecting a temperature of air in the air duct by a temperature sensor; andsetting a quantity of air to be introduced into the exhaust tract depending on the detected temperature.12. The method according to further comprising the steps of:determining a degree of sulphurization of the second three-way catalytic converter characterizing a quantity of sulphur contained in the second three-way catalytic converter; andsetting a duration during which the air is introduced into the exhaust tract for desulphurization of the second three-way catalytic converter and ...

DIRECT REAGENT VAPORIZATION SYSTEM

The present invention provides for a protective sleeve for use with a reagent injection lance. The protective sleeve includes a tube having a bore therethrough. Further, the tube has a lance receiving end configured to receive a reagent injection lance and an exhaust gas chamber end that extends into an exhaust gas chamber. The tube further includes a shielding air opening located proximate to the lance receiving end and configured to receive shielding air. The shielding air enters into the bore through the shielding air opening, surrounds the lance, protecting it from the heat of the exhaust gas flow. The shielding air exits the bore through the exhaust gas chamber end. 1. A protective sleeve for use with a reagent injection lance , the protective sleeve comprising: the tube having a lance receiving end configured to receive a reagent injection lance,', 'a shielding air opening located proximate to the lance receiving end and configured to receive shielding air, and', 'an exhaust gas chamber end,, 'a tube having a bore therethrough,'}wherein shielding air enters into the bore through the shielding air opening and exits the bore through the exhaust gas chamber end.2. The protective sleeve of further comprising shield air shut-off valve in communication with the lance receiving end of the tube claim 1 , the shield air shut-off valve being configured to close the lance receiving end such that shield air is prevented from exiting the bore through the lance receiving end.3. The protective sleeve of further comprising a shield air source in communication with the shield air opening.4. The protective sleeve of wherein the shield air source is an air blower.5. A direct reagent vaporization system for injecting atomized reagent into a hot exhaust gas chamber claim 3 , the system comprising:a tube having a tube bore therethrough, the tube having a lance receiving end configured to receive a reagent injection lance, a shielding air opening, and an exhaust gas chamber end, the ...

PUMP PURGE FOR UREA DOSING SYSTEM

According to one embodiment, a diesel exhaust fluid purging system includes a metering valve with a supply port and a delivery port. The purging system also includes a pump assembly that is fluidly connected to the supply port of the metering valve. The pump assembly includes a pump and a single supply line that is fluidly connectable with a diesel exhaust fluid source. The purging system further includes an injection assembly that is fluidly connected to the delivery port of the metering valve. The injection assembly includes an air supply line that is fluidly connectable with an air supply source. Additionally, the purging system includes a controller in electrical communication with the metering valve, the pump assembly, and the injection assembly. The controller is configured to purge the pump assembly of residual diesel exhaust fluid using air from the air supply line. 1. A diesel exhaust fluid purging system , comprising:a metering valve comprising a supply port and a delivery port;a pump assembly fluidly connected to the supply port of the metering valve, the pump assembly comprising a pump and a single supply line fluidly connectable with a diesel exhaust fluid source;an injection assembly fluidly connected to the delivery port of the metering valve, the injection assembly comprising an air supply line fluidly connectable with an air supply source; anda controller in electrical communication with the metering valve, the pump assembly, and the injection assembly, the controller configured to purge the pump assembly of residual diesel exhaust fluid using air from the air supply line.2. The system of claim 1 , wherein the pump comprises an inlet and an outlet claim 1 , the single supply line being fluidly connected to the pump inlet.3. The system of claim 2 , wherein the system further comprises an accumulation line that fluidly connects the pump outlet to the supply port of the metering valve claim 2 , and a bypass line that fluidly connects the accumulation ...

METHOD FOR THE EXHAUST AFTERTREATMENT OF AN INTERNAL COMBUSTION ENGINE AND EXHAUST AFTERTREATMENT SYSTEM

The invention relates to a method for the exhaust aftertreatment of an internal combustion engine, which on the outlet side is connected to an exhaust gas system. Provided in the exhaust gas system is at least one exhaust aftertreatment component with which, upon reaching the light-off temperature of this exhaust aftertreatment component, the gaseous limited exhaust gas components may be converted into unlimited exhaust gas components. An introduction point is provided at an exhaust duct of the exhaust gas system, at which a hot gas, in particular an exhaust gas of an exhaust gas burner, is introduced into the exhaust duct. The hot gas mixes with the exhaust gas of the internal combustion engine in such a way that a hot mixed gas results in which the unburned exhaust gas components are oxidized to unlimited exhaust gas components, without a catalytically active surface. It is provided that the introduction of the hot gas is set as soon as the exhaust gas components of the exhaust aftertreatment system have reached their respective light-off temperature. 1. A method for the exhaust aftertreatment of an internal combustion engine , which on the outlet side is connected to an exhaust gas system , wherein at least one exhaust aftertreatment component is situated in the exhaust gas system , and wherein an introduction point for introducing a hot gas is formed at an exhaust duct of the exhaust gas system , comprising the following steps:operating the internal combustion engine with a fuel-air mixture,introducing the exhaust gases of the internal combustion engine into the exhaust duct,introducing a hot gas into the exhaust duct at an introduction point, wherein the hot gas mixes with the exhaust gas of the internal combustion engine in a mixing zone, so that a stoichiometric or overstoichiometric exhaust gas results downstream from the mixing zone, andoxidizing the unburned exhaust gas components of the exhaust gas of the internal combustion engine in a reaction zone ...

Removal of contaminants from air for use in aircraft engines

A secondary air system for an aircraft engine comprises an air flow path communicating between a source of pressurized cooling air and an air consuming component. A filter is disposed in the air flow path upstream from the air consuming component. The filter has at least one of: openings of a size selected for capturing suspended particles; and a filter surface material for binding with chemical contaminants.

EXHAUST GAS PURIFICATION SYSTEM WITH AIR INJECTION

The present invention relates to an exhaust gas purification system comprising two catalytic sub-systems, wherein the first catalytic sub-system is for conversion of NOx, HC, CO and optionally particulate matter, and the second sub-system is for conversion of CO. The second sub-system locates at the downstream of the first catalytic sub-system. An air injection is positioned between the first catalytic sub-system and second catalytic sub-system.

Feed tube restriction for on board diagnostic compliance in secondary air injection applications on v-engines

A flow restrictor for a secondary air injection system for an internal combustion engine. The flow restrictor includes a main body configured to be located between the intake end and a first injecting end of the supply conduit of the secondary air injection system. The main body defines a restricting orifice configured to reduce propagation of pressure fluctuations between the first injecting end a second injecting end. The main body includes a first connecting portion configured to connect to the supply conduit proximal to the intake end and a second connecting portion configured to connect to the supply conduit proximal to the first injecting end.

PROACTIVE CATALYST HEATING

A proactive heating system for a vehicle, which is used to increase the temperature of an exhaust catalyst prior to ignition of an engine to reduce emissions. The proactive heating system is part of an exhaust system for a vehicle, and includes an electrically heated catalyst and an air pump, which are activated prior to engine ignition, to increase the temperature of a three-way catalyst such that the three-way catalyst is at the desired target threshold temperature, or light-off temperature, prior to engine ignition, eliminating the delay in emissions treatment after cold-start of the engine. The proactive heating system addresses the high level of untreated emissions emitted from an internal combustion engine before the catalytic emissions system reaches the light-off temperature. The proactive heating system provides heating of a catalyst to light-off temperature without combusting hydrocarbon fuel, which leads to engine out emissions. 1. A proactive heating system for an exhaust system , comprising:an exhaust manifold connected to an engine;an exhaust treatment device located downstream from the exhaust manifold; andan air transfer device for directing air towards the exhaust treatment device;wherein the air transfer device and the exhaust treatment device are activated such that the temperature of the exhaust treatment device is increased to a predetermined temperature prior to ignition of the engine.2. The proactive heating system for an exhaust system of claim 1 , further comprising:an intake manifold connected to the engine;wherein a portion of the air flowing towards the intake manifold is diverted prior to entering the intake manifold and towards the exhaust treatment device by the air transfer device.3. The proactive heating system for an exhaust system of claim 1 , further comprising:an air pump filter, the air transfer device being in fluid communication with the air pump filter;wherein air from atmosphere is directed by the air transfer device from ...

EXHAUST SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

An exhaust system for an internal combustion engine, especially for the internal combustion engine of a vehicle, includes an exhaust gas duct () carrying an exhaust gas stream (A) and a reactant release arrangement () for releasing a reactant ® into the exhaust gas stream (A). A bypass flow generation arrangement () generates a bypass flow (M) surrounding the reactant stream ® that is released from the reactant release arrangement (). 1. An exhaust system for an internal combustion engine of a vehicle , the exhaust system comprising:an exhaust gas duct carrying an exhaust gas stream;a reactant release arrangement releasing a reactant stream into the exhaust gas stream; anda bypass flow generation arrangement generating a bypass flow surrounding the reactant stream released from the reactant release arrangement.2. An exhaust system in accordance with claim 1 , wherein:the bypass flow surrounds the reactant stream at least in some areas or essentially completely in relation to a main direction of flow of the reactant; anda main direction of flow of the bypass flow corresponds to a main direction of flow of the reactant stream.3. An exhaust system in accordance with claim 1 , wherein:the reactant release arrangement comprises a reactant release unit; andthe bypass flow generation arrangement comprises a bypass flow release unit annularly surrounding the reactant release unit.4. An exhaust system in accordance with claim 3 , wherein the bypass flow release unit comprises:a ring-shaped bypass flow release body; andupstream of the bypass flow release body a ring-shaped bypass flow release chamber leading to the bypass flow release body.5. An exhaust system in accordance with claim 4 , wherein the bypass flow release body comprises a porous configuration.6. An exhaust system in accordance with claim 4 , wherein the bypass flow release body comprises a sintered body.7. An exhaust system in accordance with claim 3 , further comprising a bypass flow gas source feeding bypass ...

Technologies For Producing Exhaust Gas With Controlled Hydrocarbon Speciation

Technologies for producing an exhaust gas stream with controlled hydrocarbon species are disclosed. In some embodiments the technologies include an apparatus for producing an exhaust gas stream. The apparatus may include a burner for combusting primary fuel and produce an exhaust gas stream, and an exhaust pipe coupled to the burner to receive the exhaust gas stream. One or more supplemental fuel inlets may be coupled to the exhaust gas pipe for the addition of supplemental fuel to the exhaust gas stream. In embodiments, the speciation and total concentration of hydrocarbon compounds in the exhaust gas stream may be adjusted by controlling the relative amount of supplemental fuel added to the exhaust gas stream. Methods for producing an exhaust gas stream are also disclosed.

EXHAUST GAS TEMPERATURE CONTROL

An exhaust gas system is provided for a transport refrigeration unit (TRU) engine. The exhaust gas system includes an exhaust system. The exhaust system includes a catalyst operable in a temperature range to catalyze exhaust gas produced in the TRU engine and flown through the exhaust system. The exhaust gas system further includes temperature sensors respectively disposed to sense exhaust gas temperatures upstream of and downstream from the catalyst, at least one of first, second and third valves which are proportionally controllable to moderate amounts of air provided to the TRU engine, fuel provided to the TRU engine and air provided to the catalyst, respectively, and a controller. The controller is configured to compare sensed exhaust gas temperatures with the temperature range and issue a proportional signal to the at least one of the first, second and third valves in accordance with results of the comparison. 1. An exhaust gas system for a transport refrigeration unit (TRU) engine , comprising:an exhaust system comprising a catalyst operable in a temperature range to catalyze exhaust gas produced in the TRU engine and flown through the exhaust system;temperature sensors respectively disposed to sense exhaust gas temperatures upstream of and downstream from the catalyst;at least one of first, second and third valves which are proportionally controllable to moderate amounts of air provided to the TRU engine, fuel provided to the TRU engine and air provided to the catalyst, respectively; anda controller coupled to the temperature sensors and the at least one of the first, second and third valves and configured to:compare sensed exhaust gas temperatures with the temperature range, andissue a proportional signal to the at least one of the first, second and third valves in accordance with results of the comparison.2. The exhaust gas system according to claim 1 , wherein the TRU engine comprises one of a gas engine claim 1 , a compressed natural gas engine claim 1 , ...

Systems and Methods for Reducing Emissions in Exhaust of Vehicles and Producing Electricity

Methods and apparatus for removing undesired pollutants from exhausts streams of spark-ignited internal-combustion engines in vehicles while producing electrical energy as a byproduct. The apparatus includes a reduction catalyst, a thermoelectric generator (TEG), and an oxidation catalyst. The TEG cools the exhaust stream and generates electricity. The exhaust stream is oxygenated after passing through the TEG and prior to passing through the oxidation catalyst. 1. An exhaust system for a vehicle , said system comprising:a three way catalytic converter (TWC) having a TWC input in fluid communication with an engine output of a spark-ignited internal combustion engine disposed in said vehicle, said engine generating an exhaust stream while operating at a stoichiometric air-fuel ratio, said TWC configured to remove nitrogen oxides (NOx) from said exhaust stream;a thermoelectric generator (TEG) having a TEG input in fluid communication with a TWC output of said TWC, said TEG configured to convert a first thermal energy of said exhaust stream to an electrical energy, said TEG outputting a TEG output exhaust stream having a second thermal energy, said second thermal energy less than said first thermal energy;a battery in electric communication with said TEG, said battery configured to store said electrical energy;a gas injector in fluid communication with said TEG output exhaust stream, said gas injector configured to increase an oxygen content of said TEG output exhaust stream; andan oxidation catalyst (OxCat) having an OxCat input in fluid communication with a TEG output of said TEG, said OxCat configured to remove a carbon monoxide, hydrocarbon, or other organic compound content of said TEG output exhaust stream,wherein said gas injector is disposed between said TEG and said OxCat.2. The system of further comprising a cooling unit disposed between said TEG and said OxCat claim 1 , said cooling unit configured to cool said TEG output exhaust stream.3. The system of ...

METHOD AND SYSTEM FOR THE REMOVAL OF PARTICULATE MATTER FROM ENGINE EXHAUST GAS OR PROCESS EQUIPMENT

Method and system for removal of particles such as soot, ash and heavy metals, and optionally additionally NOand SObeing present in exhaust gas from an engine or process equipment. 1. Method for removal of soot , hydrocarbons , ash and heavy metals being present in exhaust gas from an engine or process equipment , comprising the steps ofpassing the exhaust gas at exhaust gas temperaturethrough the at least one filtration unit each comprising at least one particulate filter and capturing particles, soot, ash and heavy metals contained in the exhaust gas;continuously burning the captured soot and adhered hydrocarbons off the at least one particulate filter by contact with a catalyst being arranged on the filter;periodically opening at least one particle discharge valve in a particle discharge valve arrangement comprising a particle collector mounted at each of the inlets for the filtration units;subsequently pulse injecting air into the outlet of at least one of the filtration units in reverse to the previous flow of the exhaust gas and blowing the particles off the at least one particulate filter;closing the at least one particle discharge valve; andsubsequently repeating the reverse pulse process for all the one or more filtration units without shutting off said filtration units from the exhaust gas.2. The method of claim 1 , wherein the at least one particulate filter is in form of a wall flow filter.3. The method of claim 2 , wherein the catalyst is coated on or inside the walls of the at least one particulate filter.4. The method of claim 1 , wherein the catalyst comprises of titanium dioxide claim 1 , oxides of vanadium and tungsten and metallic palladium.5. The method of claim 1 , wherein body of the at least one particulate filter is prepared from silicon carbide claim 1 , cordierite claim 1 , mullite claim 1 , aluminium titanate or sintered metal.6. The method of claim 1 , wherein the air is pulse injected with injection pulse duration of between 10 and 600 ...

Thermal management system for aftertreatment system

A thermal management system for an aftertreatment system includes an air pump and a compressed air rail. The compressed air rail is fluidly connected with the air pump. The thermal management system further includes a first valve located between the compressed air rail and an exhaust outlet pathway. The first valve is configured to selective supply air to the aftertreatment system of the engine. The thermal management system further includes a heater located between the compressed air rail and the first valve. The heater is configured to heat the air before supplying air to the aftertreatment system of the engine.

Ferrite as three-way catalyst for treatment of exhaust gas from vehicle engine

A kind of ferrite used as a three-way catalyst for treatment of exhaust gas from vehicle engines is revealed. Mono-nitrogen oxides (NO X ), carbon monoxide (CO) and hydrocarbons (HC) in exhaust gas from vehicle engines can be removed effectively by the three-way catalyst made from ferrite containing at least one substitutional metal.

EXHAUST GAS APPARATUS AND METHOD FOR THE REGENERATION OF A NOX TRAP AND A PARTICLE FILTER

Exhaust gas apparatus for the cleaning of exhaust gas where the exhaust gas apparatus comprises an exhaust conduit section which is formed with at least two separate flow paths. Each flow path is provided with a particle filter for the removal of particulate matter from the exhaust gas, an NOx trap for the removal of NOx from the exhaust gas. The exhaust gas apparatus further comprises at least one cold flame vaporizer in which fuel is partially oxidized in preheated air to form a cold flame gas where the cold flame vaporizer is arranged in fluid communication with each of the flow paths in the exhaust conduit section such that the cold flame gas can flow through the particle filter and the NOx trap, and valve means for controlling the flow of cold flame gas from the cold flame vaporizer to each flow path in the exhaust conduit section. Thereby, both the particle filter and the NOx trap in at least one of the flow paths can be regenerated in a single operation. There is also provided a method for regenerating cleaning means for exhaust gas where the cleaning means comprises an NOx trap and possibly a particle filter. 2. Exhaust gas apparatus according to claim 1 ,wherein the flow paths are formed by providing the exhaust conduit section as one conduit with one or more partitions such that two or more separate flow paths for the exhaust gas are formed in the exhaust conduit section.3. Exhaust gas apparatus according to claim 1 ,wherein the flow paths are formed by providing the exhaust conduit section with at least two separate conduits through which the exhaust gas can flow.4. Exhaust gas apparatus according to claim 1 ,wherein the at least one cold flame vaporizer is arranged outside the flow paths and that the cold flame vaporizer, is connected to each of the flow paths of the exhaust conduit section by fluid lines or conduits.5. Exhaust gas apparatus according to claim 1 ,wherein the at least one cold flame vaporizer is arranged within the exhaust conduit section ...

DIESEL ENGINE HIGH PRESSURE SCR VENTILATION AND PRESSURE STABILISATION SYSTEM

A diesel engine high pressure SCR ventilation and voltage stabilisation system, comprising an SCR reactor (), an air intake pipeline () and an exhaust pipeline () respectively connected to an air inlet and an exhaust outlet of the SCR reactor, a pressure difference sensing apparatus (), and a control apparatus, a first control valve () being arranged on the air intake pipeline () and a second control valve () being arranged on the exhaust pipeline (), and the control apparatus being connected to the pressure difference sensing apparatus (), the first control valve (), and the second control valve (). The control apparatus controls the first and second control valves such that the pressure difference between the SCR reactor and the exhaust side of the diesel engine remains in a predetermined pressure difference range. The present system implements rapid ventilation and ensures precise control and stabilisation of pressure difference. 1. A diesel engine high pressure SCR ventilation and pressure stabilization system , characterized by , comprising:an SCR reactor configured to denitrify from exhaust gas of the diesel engine;an air intake pipeline connected to an air inlet of the SCR reactor for circulation of compressed air and provided with a first control valve;an exhaust pipeline connected to an air outlet of the SCR reactor and provided with a second control valve;a pressure difference sensing device configured to detect a difference value between gas pressure in the SCR reactor and pressure on an exhaust side of the diesel engine; anda control device connected to the pressure difference sensing device, the first control valve, and the second control valve;wherein, the control device is configured to control the opening of the first control valve and the second control valve such that the SCR ventilation and pressure stabilization system starts to ventilate, and exhaust gas of the SCR reactor, the air intake pipeline, and the exhaust pipeline is pushed by the ...

Systems and methods for hot air injection into exhaust ports

Methods and systems are provided for reducing emissions during an engine cold start. In one example, a method may include, during emission control device heating, injecting heated air into an exhaust runner of each cylinder of the engine during an exhaust stroke of the corresponding cylinder, after a blowdown exhaust pulse. In this way, an amount of hydrocarbons in feedgas provided to the emission control device prior to the emission control device reaching its light-off temperature may be reduced.

Conditioning of the exhaust gas plume of a marine vessel

The present application relates to an arrangement for a marine vessel, comprising a combustion unit arranged in an engine room of the marine vessel, an exhaust gas cleaning system in flow connection with the combustion unit and being arranged for receiving and for cleaning the exhaust gas from the combustion unit to a cleaned exhaust gas, a cleaned gas exhaust pipe being in flow connection with the exhaust gas cleaning system and arranged for receiving the cleaned exhaust gas, a plume control system, comprising an air intake for taking in ambient air, a heater for heating the ambient air producing heated air, and a gas mixer placed in the cleaned gas exhaust pipe and arranged for mixing the cleaned exhaust gas in the cleaned gas exhaust pipe with the heated air resulting in an exhaust gas mixture that is blown out into the atmosphere via the one or more exhaust gas outlets. The application furthermore relates to a method for avoiding that exhaust gas that is created in a combustion unit in an engine room of a marine vessel and that is cleaned in an exhaust gas cleaning system that is in flow connection with an cleaned gas exhaust pipe which in its turn is in flow connection with one or more exhaust gas outlets, preferably arranged in a casing, and arranged for blowing out the exhaust gas into the atmosphere, descends and grounds on the marine vessel and/or other adjacent areas.

Vehicle control method and vehicle control device

An under-floor catalyst ( 33 ) includes a GPF ( 41 ) capable of trapping fine exhaust particles in exhaust gas, and a downstream-side catalyst ( 42 ) positioned on the downstream side of GPF ( 41 ). GPF ( 41 ) can be supplied with secondary air. When an internal combustion engine ( 10 ) is stopped during travel, the secondary air is supplied to GPF ( 41 ) in which the fine exhaust particles are accumulated. At this time, the temperature of GPF ( 41 ) is equal to or higher than a predetermined temperature. Thus, a deterioration in the exhaust gas purification performance of under-floor catalyst ( 33 ) at the time of the start of internal combustion engine ( 10 ) can be suppressed.

EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE (AS AMENDED)

Provided is an exhaust purification system for an internal combustion engine. The exhaust purification system comprising: a NOpurifying catalyst arranged in an exhaust passage of the internal combustion engine, wherein the NOpurifying catalyst comprises a base metal supported on a catalyst support; an oxygen sensor arranged at the downstream side of the NOpurifying catalyst in the exhaust passage; and an air-fuel, ratio control means for controlling the air-fuel ratio of exhaust gas flowing into the NOpurifying catalyst; wherein when the NOpurifying catalyst suffers from predetermined oxygen poisoning, the air-fuel ratio control means controls the air-fuel ratio of the exhaust gas, which flows into the NOpurifying catalyst, to a first air-fuel ratio wherein the first air-fuel ratio is richer than a theoretical air-fuel ratio, and then the air-fuel ratio control means switches the air-fuel ratio of the exhaust gas, which flows into the NOpurifying catalyst, to a second air-fuel ratio on the basis of an output value from the oxygen sensor wherein the second air-fuel ratio is leaner than the first air-fuel ratio. 1. An exhaust purification system for an internal combustion engine comprising:{'sub': X', 'X, 'a NOpurifying catalyst arranged in an exhaust passage of said internal combustion engine, wherein said NOpurifying catalyst comprises a base metal supported on a catalyst support;'}{'sub': 'X', 'an oxygen sensor arranged at the downstream side of said NOpurifying catalyst in the exhaust passage; and'}{'sub': 'X', 'an air-fuel ratio control means for controlling the air-fuel ratio of exhaust gas flowing into said NOpurifying catalyst;'}{'sub': X', 'X', 'X, 'wherein when said NOpurifying catalyst suffers from predetermined oxygen poisoning, said air-fuel ratio control means controls the air-fuel ratio of the exhaust gas, which flows into said NOpurifying catalyst, to a first air-fuel ratio wherein said first air-fuel ratio is richer than a theoretical air-fuel ratio, ...

Method for flushing an exhaust-gas cleaning system

A method for flushing an exhaust-gas cleaning system of an internal combustion engine having a catalytic converter with at least one catalyst bed, whereby an exhaust gas from the internal combustion engine is supplied to the exhaust-gas cleaning system in an active operating phase of the exhaust-gas cleaning system, and no exhaust gas is supplied to the exhaust-gas cleaning system in a passive operating phase of the exhaust-gas cleaning system, whereby a temperature of the at least one catalyst bed is determined and the flushing is performed depending on the determined temperature, whereby the exhaust-gas cleaning system is flushed in the passive operating phase of the exhaust-gas cleaning system by a flushing device, which is connected directly to an exhaust-gas line.

CONTROLLER FOR INTERNAL COMBUSTION ENGINE

A controller for an internal combustion engine is configured to be used in a vehicle to control the vehicle. The vehicle includes an internal combustion engine that is provided with an exhaust purifier and a generator that converts rotation power of a crankshaft of the internal combustion engine into electric power. The exhaust purifier includes a heater configured to generate heat by consuming electric power, a filter configured to collect particulate matter from an exhaust gas, and a catalyst arranged at an upstream side or downstream side of the filter and subjected to heating by the heater. The controller is configured to perform an increase process for increasing electric power generated by the generator by increasing electric power consumed by the heater on condition that a regeneration request for the filter is issued. 1. A controller for an internal combustion engine , wherein the controller is configured to be used in a vehicle to control the vehicle , the vehicle includes an internal combustion engine that is provided with an exhaust purifier and a generator that converts rotation power of a crankshaft of the internal combustion engine into electric power , the exhaust purifier includes a heater configured to generate heat by consuming electric power , a filter configured to collect particulate matter from an exhaust gas , and a catalyst arranged at an upstream side or downstream side of the filter and subjected to heating by the heater ,wherein the controller is configured to perform an increase process that increases electric power generated by the generator by increasing electric power consumed by the heater on condition that a regeneration request for the filter is issued.2. The controller according to claim 1 , whereinthe catalyst is arranged at the downstream side of the filter, andthe heater is arranged between the filter and the catalyst.3. The controller according to claim 2 , whereinthe catalyst is a selective catalytic reduction catalyst ...

Methods and systems for aftertreatment device

Methods and systems are provided for an exhaust system. In one example, a method includes heating an aftertreatment device during an engine off. The heating includes utilizing one or more of an injector, a heater, and a recirculation fan.

EXHAUST PURIFIER

The purpose of the present invention is to provide an exhaust purifier () which is capable of restoring a pressure difference (ΔP) and a purification rate (NOx removal efficiency) of a NOx catalyst () to the initial states thereof. An exhaust purifier () for removing particulate matter adhered to a NOx catalyst () by injecting pressurized air using an air injection nozzle () into a housing () of a catalyst reactor () in Which the NOx catalyst () serving as a catalyst is positioned, wherein the particulate matter is removed by increasing the pressure inside the catalyst reactor () to a prescribed pressure (ΔIP) within a prescribed interval of time (t) by operating an injection valve () for supplying pressurized air 1. An exhaust purifier wherein compressed air is injected into a catalyst reactor in which a catalyst is arranged so as to remove dust adhering to the catalyst ,characterized in thatby operating an injection valve supplying the compressed air, pressure in the catalyst reactor is raised to predetermined pressure within predetermined time so as to remove the dust.2. The exhaust purifier according to claim 1 , wherein a shock wave is generated in the catalyst reactor by the compressed air so as to remove the dust.3. The exhaust purifier according to claim 1 , wherein an injection port of an air injection nozzle injecting the compressed air is arranged near a wall surface of the catalyst reactor.4. The exhaust purifier according to claim 2 , wherein an injection port of an air injection nozzle injecting the compressed air is arranged near a wall surface of the catalyst reactor. The present invention relates to an exhaust purifier of an internal combustion engine.Conventionally, an exhaust purifier which reduces NOx to nitrogen and water with a catalyst reactor in which a selective reduction NOx catalyst (SCR catalyst) is arranged and ammonia which is a reducing agent so as to decrease NOx (nitrogen oxide) included in exhaust gas from an internal combustion ...

Apparatus and method for producing ammonia for exhaust gas aftertreatment

The invention relates to a device for generating ammonia from an ammonia precursor solution, having a reaction space with an inflow connector through which a gas flow can flow into the reaction space, with an outflow connector through which an ammonia-containing gas flow can exit the reaction space, and with a supply device by way of which an ammonia precursor solution can be supplied into the reaction space, wherein the inflow connector is connected to a first connecting line through which air can flow from an intake line of an internal combustion engine into the reaction space, and wherein the inflow connector is furthermore connected to a second connecting line through which exhaust gas can flow from an exhaust line of the internal combustion engine into the reaction space.

System and method for valve seat injection

Methods and systems are provided for implementing fluid injection through a cylinder valve seat. The engine system may include a cylinder valve with a valve head mating with a valve seat when the valve is closed. The valve seat includes an injection orifice blocked by the valve head when the cylinder valve is closed and unblocked when the cylinder valve is opened.

EXHAUST GAS PURIFICATION DEVICE FOR GENERAL-PURPOSE ENGINE

An exhaust gas purification device for a general-purpose engine includes a crankcase and a cylinder block provided continuously on an upper portion of the crankcase and inclined to one lateral side of the crankcase. A catalytic converter is provided in an exhaust muffler of the engine. A downstream end of a secondary air introduction pipe is connected to an exhaust pipe upstream of the muffler. A dedicated air filter is connected through a one-way valve to an upstream side of the secondary air introduction pipe. The filter is disposed between the crankcase and a lower surface of the cylinder block. The secondary air introduction pipe is arranged so as to meander on one side of the cylinder block. Accordingly, the device can be employed without increasing an outer size of the engine, and can also securely introduce secondary air into an exhaust system, thereby enhancing an exhaust gas purifying effect.

Burner With Air-Assisted Fuel Nozzle And Vaporizing Ignition System

An exhaust aftertreatment system includes a burner in heat transfer relation with exhaust gas in an exhaust gas passageway. The burner includes a housing assembly and a nozzle assembly, the housing assembly at least partially defining a combustion chamber. The nozzle assembly is at least partially received in the housing assembly and includes a nozzle body and an electric heating element. The heating element is disposed within the nozzle body and operable to heat fuel flowing through the nozzle body. A control module is in communication with the heating element and controls the heating element in a first mode in which the heating element heats fuel for combustion in the combustion chamber, and a second mode in which the heating element burns deposits off of the nozzle body when fuel is not supplied to the nozzle body.

AIR DITHERING FOR INTERNAL COMBUSTION ENGINE SYSTEM

Described herein is an air dithering system for an internal combustion engine generating exhaust gas that includes an exhaust line in exhaust gas receiving communication with the internal combustion engine. The system also includes an exhaust aftertreatment component positioned within the exhaust line in exhaust gas receiving communication with exhaust gas in the exhaust line. Further, the system includes an air injector in air injecting communication with exhaust gas in the exhaust line at a location downstream of the internal combustion engine and upstream of the exhaust aftertreatment component. 1. An air dithering system for an internal combustion engine generating exhaust gas , comprising:an exhaust line in exhaust gas receiving communication with the internal combustion engine;an exhaust aftertreatment component positioned within the exhaust line in exhaust gas receiving communication with exhaust gas in the exhaust line; andan air injector in air injecting communication with exhaust gas in the exhaust line at a location downstream of the internal combustion engine and upstream of the exhaust aftertreatment component.2. The air dithering system of claim 1 , wherein the air injector is coupled to the exhaust line upstream of the exhaust aftertreatment component.3. The air dithering system of claim 1 , wherein the air injector injects air substantially directly into an inlet of the exhaust aftertreatment component.4. The air dithering system of claim 1 , wherein the exhaust line is in exhaust providing communication with the atmosphere claim 1 , and wherein all the air injected by the air injector into the exhaust gas exits into the atmosphere via the exhaust line.5. The air dithering system of claim 4 , wherein all the air injected by the air injector into the exhaust gas passes through the exhaust aftertreatment component.6. The air dithering system of claim 1 , further comprising an internal combustion engine generating the exhaust gas claim 1 , wherein when ...

Burner

A burner includes a tubular inner tube portion and a tubular outer tube portion. The inner tube portion mixes fuel with air. The outer tube portion surrounds the inner tube portion. A peripheral wall of the inner tube portion has a gaseous mixture outflow hole. The gaseous mixture outflow hole causes a clearance between an inner peripheral surface of the outer tube portion and an outer peripheral surface of the inner tube portion to communicate with an interior of the inner tube portion. A peripheral wall of the outer tube portion has an air supplying hole. The air supplying hole further supplies air to the clearance.

GAS/GAS MIXER FOR INTRODUCING GAS INTO THE EXHAUST GAS STREAM OF AN INTERNAL COMBUSTION ENGINE

A gas/gas mixer for introducing gas into an exhaust gas stream of an internal combustion engine. The gas/gas mixer includes an exhaust gas flow duct () in an exhaust gas carrying element (), through which exhaust gas (A) can flow. A mixer body () is arranged in the exhaust gas carrying element () with a plurality of exhaust gas flow openings (), through which exhaust gas (A) flowing in the exhaust gas flow duct () can flow. A gas feed volume (), through which gas (G) to be introduced into the exhaust gas stream (A) can flow, is formed in the mixer body (). The gas feed volume () is open towards the exhaust gas flow duct () via a plurality of gas release openings (). 1. A gas/gas mixer for introducing gas into an exhaust gas stream of an internal combustion engine , the gas/gas mixer comprising:an exhaust gas flow duct in an exhaust gas carrying element, through which exhaust gas can flow; and a gas feed volume, through which gas to be introduced into the exhaust gas stream can flow, is formed in the mixer body; and', 'the gas feed volume is open towards the exhaust gas flow duct via a plurality of gas release openings., 'a mixer body arranged in the exhaust gas carrying element, the mixer body having a plurality of exhaust gas flow openings, through which exhaust gas, flowing in the exhaust gas flow duct, can flow through, wherein2. The gas/gas mixer in accordance with claim 1 , wherein the mixer body has a plate-shaped configuration and is arranged in the exhaust gas carrying element obliquely to an exhaust gas main flow direction of the exhaust gas flowing through the exhaust gas flow duct.3. The gas/gas mixer in accordance with claim 1 , wherein:the mixer body comprises a first mixer body part that is arranged in the exhaust gas carrying element oriented in an upstream direction;the mixer body comprises a second mixer body part that is arranged in the exhaust gas carrying element oriented in a downstream direction; andthe gas feed volume is at least partially ...

Method and system for the removal of noxious compounds from engine exhaust gas

Method and system for the removal of nitrogen oxides, volatile organic compounds and particulate matter from engine exhaust gasat cold start conditions.

METHOD OF CONTROLLING TEMPERATURE OF EXHAUST PURIFICATION DEVICE OF INTERNAL COMBUSTION ENGINE, AND INTERNAL COMBUSTION ENGINE CONTROL DEVICE

A control unit () calculates a temperature difference (ΔTg). The temperature difference (ΔTg) is a value obtained by subtracting the temperature (Tg) of a GPF () from a target GPF temperature (Tgt). If the temperature difference (ΔTg) is less than or equal to zero, the control unit () implements a fuel economy-oriented conventional control. If the temperature difference (ΔTg) is greater than zero, the control unit () implements a filter temperature-increasing control. The filter temperature-increasing control causes the exhaust temperature to be increased so that the temperature (Tg) of the GPF () becomes greater than or equal to the target GPF temperature (Tgt). 114.-. (canceled)15. An internal combustion engine exhaust purifier temperature control method for an internal combustion engine system in which an exhaust purifier is disposed in an exhaust passage connected to an internal combustion engine , and is structured to purify exhaust gas exhausted from the internal combustion engine , and includes a filter structured to collect exhaust particulate matter contained in the exhaust gas , the internal combustion engine exhaust purifier temperature control method comprising:performing a predetermined exhaust gas temperature increase control to increase temperature of the exhaust gas, in response to a condition that temperature of the filter is lower than or equal to a first preset temperature point; andsetting the first preset temperature point, based on collection efficiency at which the filter collects the exhaust particulate matter.16. The internal combustion engine exhaust purifier temperature control method as claimed in claim 15 , comprising:setting the first preset temperature point lower than a temperature point at which the exhaust particulate matter collected by the filter is burned and removed.17. The internal combustion engine exhaust purifier temperature control method as claimed in claim 15 , comprising:setting the first preset temperature point to a ...

AIR-INJECTION SYSTEM TO IMPROVE EFFECTIVENESS OF SELECTIVE CATALYTIC REDUCTION CATALYST

Embodiments are described to improve the durability of a lean NOaftertreatment system. According to one embodiment of the present invention an air injection system is used to inject air continuously into the exhaust system between the upstream three-way catalyst and the downstream selective catalytic reduction (SCR) catalyst when the engine is operating at stoichiometric or rich air/fuel ratios and the exhaust temperatures are above a calibratable level (e.g., 700° C.). In another embodiment, an oxidation catalyst is positioned downstream of the air injection point to prevent exothermic reactions from occurring on the SCR. In another embodiment, the reductant for the SCR is generated in-situ. In yet another embodiment, a diverter valve with a reduction catalyst in a bypass arm is utilized to bypass the SCR during high load conditions. 1. A durable catalyst system for the reduction of emissions from a gasoline engine exhaust stream , comprising:a light-off catalyst closely coupled to the engine;a selective catalytic reduction catalyst positioned downstream of the light-off catalyst;a reductant injection system positioned between the light-off catalyst and the selective catalytic reduction catalyst; andan air injection system positioned between the light-off catalyst and the location for reductant injection to inject air into the exhaust stream at designated engine conditions to improve the durability of the selective catalytic reduction catalyst.2. The system of claim 1 , wherein engine controls are provided that operate in conjunction with the air injection system to inject air into the exhaust stream under designated conditions to improve the durability of the selective catalytic reduction catalyst.3. The system of claim 1 , wherein the air injection system is a pump that provides a continuous stream of air under the designated conditions.4. The system of claim 1 , wherein the air injection system provides pulsed air under the designated conditions.5. The system of ...

SYSTEMS AND METHODS FOR PURGING A REDUCTANT INSERTION ASSEMBLY OF A REDUCTANT

A reductant insertion assembly includes: a first pump configured to pump a predetermined amount of a reductant into a selective catalytic reduction system; a reductant delivery line configured to deliver the reductant to the first pump from a reductant storage tank; a reductant return line configured to return reductant to the reductant storage tank from the first pump; a second pump configured to pump the reductant from the reductant storage tank to the first pump; and a valve selectively moveable between a closed position in which the second pump pumps the reductant through the reductant delivery line to the first pump, and an open position in which the second pump draws air through the valve and pumps the air through at least a portion of the reductant delivery line downstream of the valve and the first pump to purge the reductant insertion assembly of the reductant. 1. A reductant insertion assembly comprising:a first pump configured to pump a predetermined amount of a reductant into a selective catalytic reduction system;a reductant delivery line fluidly coupled to the first pump, the reductant delivery line configured to deliver the reductant to the first pump from a reductant storage tank;a reductant return line fluidly coupled to the first pump and configured to return at least a portion of the reductant to the reductant storage tank from the first pump;a second pump positioned in the reductant delivery line upstream of the first pump, the second pump configured to pump the reductant from the reductant storage tank to the first pump; anda valve positioned in the reductant delivery line upstream of the second pump, the valve being selectively moveable between a closed position in which the second pump pumps the reductant through the reductant delivery line to the first pump, and an open position in which the second pump draws air through the valve and pumps the air through at least a portion of the reductant delivery line downstream of the valve and the first ...

Air Filter with a Primary Air Outlet and a Secondary Air Outlet as well as Filter Element Therefor

A filter element has a filter medium folded in a star shape that surrounds annularly a longitudinal axis of the filter element and is flowed through radially from exterior to interior. The filter element has a primary air passage and a secondary air passage. In the filter medium, a cutout is formed that penetrates a plurality of folds of the filter medium. A passage socket at which the secondary air passage is formed extends through the cutout. An air filter provided with a filter housing having a raw air inlet, a primary air outlet, and a secondary air outlet, has such a filter element that separates in the filter housing a raw side communicating with the raw air inlet from a clean side. The primary air outlet communicates through the primary air passage and the secondary air outlet through the secondary air passage with the clean side, respectively. 1. A hollow cylindrical filter element comprising:a filter medium folded in a star shape and surrounding a longitudinal axis of the filter element in an annular shape, wherein the filter medium is configured to be flowed through in a radial direction relative to the longitudinal axis from an exterior to an interior of the filter medium;wherein the filter medium comprises a circumferentially closed cutout penetrating a plurality of folds of the filter medium, wherein an axial extension of the cutout along the longitudinal axis is smaller than an axial extension of the filter medium along the longitudinal axis;a primary air passage and a secondary air passage;a passage socket extending through the cutout, wherein the secondary air passage is formed at the passage socket.2. The filter element according to claim 1 , wherein a fold course of the folds of the filter medium penetrated by the cutout continues axially bordering the cutout.3. The filter element according to claim 1 , wherein end edges of the folds of the filter medium penetrated by the cutout that are bordering the cutout are glued or bonded to each other along ...

Catalyst thermal regeneration by exhaust gas

Method and system for thermal regeneration of a catalyst by inlet turbine exhaust gas from a diesel engine, where a gas split stream ( 08 ) is led from the engine exhaust ( 02 ) through an eductor ( 04 ) and further to regeneration of a catalyst, wherein a cold air stream ( 09 ) is used to keep the regeneration gas stream at a desired constant temperature range.

NOx Reduction Without Urea Using a Dual Stage Catalyst System With Intercooling in Vehicle Gasoline Engines

An exhaust aftertreatment system includes a first catalytic converter, an oxidation catalyst including a storage catalyst, an air injector, and a cooling unit. The exhaust aftertreatment system is fluidly coupled to an output of a spark-ignited internal combustion engine that operates in the rich regime during acceleration and the lean regime during deceleration. In one aspect, the storage catalyst stores ammonia produced while the engine operates in the rich regime. The stored ammonia reacts with nitrogen oxide compounds produced when the engine operates in the lean regime. In another aspect, the nitrogen oxide compounds react with ammonia produced while the engine operates in the rich regime. 1. A system comprising:a first catalytic converter including a three-way catalyst, the first catalytic converter receiving an exhaust generated by a spark-ignited internal combustion engine in a vehicle;an oxidation catalyst comprising a storage catalyst, the oxidation catalyst in fluid communication with an output of the first catalytic converter;an exhaust conduit extending from the first catalytic converter to the oxidation catalyst;an air injector in fluid communication with the exhaust conduit; andan exhaust gas intercooler in thermal communication with the exhaust in the exhaust conduit, the exhaust gas intercooler configured to lower a temperature of the exhaust to about 350° F. to about 500° F.2. The system of claim 1 , further comprising:a radiator;an EGI radiator cooling fluid circuit in thermal communication with said exhaust gas intercooler and said radiator; andan engine radiator cooling fluid circuit in thermal communication with said engine and said radiator, wherein said engine radiator cooling fluid circuit is fluidically in parallel with said EGI radiator cooling fluid circuit.3. The system of claim 2 , wherein said EGI radiator cooling fluid circuit and said engine radiator cooling fluid circuit share a common radiator cooling fluid path that extends ...

REGENERATION AIR SYSTEM FOR AN EXHAUST AFTERTREATMENT SYSTEM OF AN INTERNAL COMBUSTION ENGINE, AND METHOD FOR EXHAUST AFTERTREATMENT

The invention relates to a regeneration air system for an exhaust aftertreatment system of an internal combustion engine and to such an exhaust aftertreatment system. The regeneration air system comprises a regeneration air delivery element, a regeneration air duct, and a regeneration air valve. A sensor system is provided in the regeneration air duct with which a regeneration air mass flow {dot over (m)}can be determined exactly. The exhaust aftertreatment system comprises an exhaust system with an exhaust duct in which, in the direction of flow of an exhaust gas through the exhaust duct, a three-way catalytic converter is arranged underhood and a four-way catalytic converter is arranged downstream. A provision is made that an intake point for the regeneration air from the regeneration air system is formed on the exhaust duct downstream from the underhood three-way catalytic converter and upstream from the four-way catalytic converter. 1. A regeneration air system for an exhaust aftertreatment system of an internal combustion engine , the regeneration air system comprising:a regeneration air delivery element,a regeneration air duct,a regeneration air valve, and{'sub': 'SL', 'a sensor system for determining a regeneration air mass flow {dot over (m)}arranged in the regeneration air duct.'}260. The regeneration air system as set forth in claim 1 , wherein the sensor system for determining the regeneration air mass flow {dot over (m)}comprises an air mass meter claim 1 , in particular a hot-film air mass meter ().3. The regeneration air system as set forth in claim 1 , wherein the sensor system comprises at least one differential pressure sensor for determining a pressure difference over the regeneration air delivery element.4. The regeneration air system as set forth in claim 1 , further comprising a controller that regulates the flow rate of the regeneration air delivery element by means of the sensor system.5. An exhaust aftertreatment system for an internal ...

Actuator for valves in internal combustion engines

An actuator for a valve in an internal combustion engine includes a housing, an electric drive unit arranged in an interior of the housing, an aeration opening arranged in the housing, a plug configured to electrically connect the electric drive unit to a voltage source, and a membrane comprising pores. The membrane is configured to close the aeration opening in the housing.

METHOD FOR OPERATING A DRIVE DEVICE AND CORRESPONDING DRIVE DEVICE

A method for operating a drive device includes heating a hot air stream with a heating device integrated in a cylinder head of an internal combustion engine of the drive device, wherein the internal combustion engine is connected with an exhaust gas system; mixing the hot air stream upstream of a catalytic converter with a cold fresh air stream for adjusting a defined temperature of the hot air stream; and supplying the hot air stream having the adjusted defined temperature to the catalytic converter in at least one operating state of the internal combustion engine so as to heat the catalytic converter. 1. A drive device , comprising:an internal combustion engine;an exhaust gas system connected to the internal combustion engine and including a catalytic converter;an air distributor; anda heating device integrated in a cylinder head of the internal combustion engine and configured to heat a cold air stream received from the air distributor for subsequent conduction as a hot air stream to the catalytic converter in an operating state of the internal combustion engine;said air distributor being configured to provide a cold fresh air stream for admixture to the hot air stream upstream of the catalytic converter to thereby adjust a temperature of the hot air stream.2. The drive device of claim 1 , wherein in the operating state of the internal combustion engine a cylinder of a plurality of cylinders of the internal combustion engine is deactivated so that the cold fresh air stream stays chemically unaltered in the absence of a combustion in the cylinder.3. The drive device of claim 2 , wherein the cylinder assumes a trailing throttle mode in the operating state of the internal combustion engine.4. The drive device of claim 2 , further comprising a valve assembly arranged downstream of the air distributor and configured to control a flow of the cold fresh air stream through the cylinder to the catalytic converter.5. The drive device of claim 1 , wherein the heating device ...

EXTERNAL AIR INTRODUCTION APPARATUS

An external air introduction apparatus includes: an external air introduction opening that guides external air into an exhaust channel, and opened and closed by a pressure difference between an external air pressure and a pressure inside the exhaust channel; a valve plate having a valve body that elastically deforms due to the pressure difference; a base plate stacked on the valve plate and having an opening that faces the valve body and smaller than the valve body and a seat surface formed around the opening; and a restriction plate that restricts elastic deformation of the valve body. The opening is closed and opened by the contact and separation of the valve body and the seat surface. The plates are fixed to a wall that forms the exhaust channel with a fastening member. 1. An external air introduction apparatus comprising:an external air introduction opening that guides external air into an exhaust channel through which exhaust gas is guided and that is opened said closed by a pressure difference between an external air pressure and a pressure inside the exhaust channel;a valve plate having a valve body that elastically deforms from an open position to a closed position in accordance with the pressure difference;a base plate stacked on the valve plate and having an opening that is formed at a position facing the valve body and that is smaller in area than the valve body and a seat surface that is formed around the opening, the opening being configured to be closed by a contact of the valve body with the seat surface when the valve body is at the closed position, and being configured to be opened by a separation of the valve body from the seat surface when the valve body is at the open position; anda restriction plate that is stacked on an opposite side of the valve plate to the base plate and that restricts elastic deformation of the valve body into a range up to the open position,wherein the valve plate, the base plate, and the restriction plate are fixed to a ...

Emissions Control Systems and Methods for Vehicles

Systems and methods of reducing the emissions of vehicles having a spark ignited internal combustion engine are provided. When the exhaust temperature is less than a set point temperature, the oxygen concentration of the exhaust is increased as the exhaust passes from a first stage catalytic converter to a second stage catalytic converter. The increased oxygen content of the exhaust improves the removal efficiency of carbon monoxide and/or hydrocarbons at the second stage catalytic converter without (or with minimal) reforming nitrogen oxide compounds. The oxygen concentration of the exhaust is not increased when the exhaust temperature is greater than the set point temperature. 1. An apparatus comprising:a first catalytic converter including a three-way catalyst, the first catalytic converter receiving an exhaust generated by a rich burn spark-ignited internal combustion engine in a vehicle;a second catalytic converter in fluid communication with the first catalytic converter;a conduit extending from the first catalytic converter to the second catalytic converter;an air injector in fluid communication with the conduit; anda controller in electrical communication with the air injector, wherein the air injector injects air into the conduit when a temperature of the exhaust is lower than a temperature set point.2. The apparatus of claim 1 , wherein the temperature set point is 400° F. to 650° F.3. The apparatus of claim 2 , wherein the temperature set point is 550° F. to 600° F.4. The apparatus of claim 1 , further comprising a thermocouple disposed in the conduit claim 1 , the thermocouple in electrical communication with the controller.5. The apparatus of claim 1 , further comprising an oxygen sensor disposed in the conduit between an inlet port of the air injector and the second catalytic converter claim 1 , the oxygen sensor in electrical communication with the controller.6. The apparatus of claim 1 , wherein the controller sends a signal to stop the air injector ...

Method for operating an exhaust gas purification apparatus

A method for operating an exhaust gas purification apparatus ( 10 ) of a vehicle includes monitoring close-coupled lambda value (Ln) of a close-coupled catalytic converter apparatus ( 20 ), operating the close-coupled catalytic converter apparatus ( 20 ) with an excess of fuel, monitoring a non-close-coupled lambda value (Lf) of a non-close-coupled catalytic converter apparatus ( 30 ), and operating the non-close-coupled catalytic converter apparatus ( 30 ) in a stoichiometric method of operation.

Method and system for emission control device heating

Methods and systems are provided for expediting emission control device heating. In one example, a method may include flowing air from an intake of an engine to one or more emission control devices via an air injection system while operating a turbocharger via an electric motor to maintain a desired airflow to the engine in response to an emission control device heating condition. In this way, fresh air is provided to the one or more emission control devices without degrading engine performance or increasing engine speed.

Catalyst Protection System from Oxygen Deprived Exhaust

An exhaust purification system for the reduction of emissions from an exhaust stream, including an oxygen detection system; a catalyst; and an air injection system positioned between the oxygen detection system and the catalyst to inject air into the exhaust stream at designated exhaust conditions, to protect the catalyst from oxygen-deprived conditions. 1. An exhaust purification system for the reduction of emissions from an exhaust stream , comprising:a. an oxygen detection system;b. a catalyst; andc. an air injection system positioned between the oxygen detection system and the catalyst to inject air into the exhaust stream at designated exhaust conditions, to protect the catalyst from oxygen-deprived conditions.2. The system of claim 1 , wherein the oxygen detection system comprises an oxygen sensor.3. The system of claim 1 , wherein the oxygen detection system is exhaust-mounted.4. The system of claim 1 , wherein the oxygen detection system comprises a signal originating from an engine control unit.5. The system of claim 1 , wherein the catalyst comprises a NOx storage catalyst claim 1 , a cold start catalyst claim 1 , or combinations thereof.6. The system of claim 1 , wherein the designated exhaust conditions comprise an exhaust stream oxygen level below a minimum oxygen level.7. The system of claim 6 , wherein the minimum oxygen level comprises a level of oxygen above that required for complete combustion of all injected fuel into an engine and exhaust systems.8. The system of claim 6 , wherein the minimum oxygen level comprises about 1 wt % oxygen or greater.9. The system of claim 1 , wherein the air injection system is operated to inject air upstream of the catalyst to prevent lambda ratios below about 1.1 within the catalyst.10. A method of reducing emissions from an exhaust stream claim 1 , comprisinga. detecting an oxygen level in the exhaust stream upstream of a catalyst;b. injecting air upstream of the catalyst at designated exhaust conditions to ...

Gas flow control for an internal combustion engine

A gas flow control system is provided for at least one cylinder of an internal combustion of a motor vehicle. The gas flow control system includes a supply passage configured to supply gas to the cylinder and an exhaust gas passage configured to remove gas from the cylinder. A bypass passage is configured to connect the supply passage and exhaust gas passage, and a fluid control switch is selectively operable to supply gas out of the exhaust gas passage through the bypass passage into the supply passage in an exhaust gas return operating mode, and to supply gas out of the supply passage through the bypass passage into the exhaust gas passage in a post-air operating mode.

METHOD AND SYSTEM FOR REDUCING ENGINE EXHAUST EMISSIONS

Methods and systems are provided for addressing engine cold-start emissions while an exhaust catalyst is activated. In one example, a method for improving exhaust emissions may include flowing ionized air into an engine exhaust, downstream of an exhaust catalyst, to oxidize exhaust emissions left untreated by the catalyst. The approach reduces the PM load of the exhaust as well as of a downstream particulate matter filter. 1. A method for an engine , comprising:introducing ionized air downstream of an exhaust catalyst responsive to catalyst temperature.2. The method of claim 1 , further comprising claim 1 , oxidizing organic matter downstream of the exhaust catalyst using the ionized air.3. The method of claim 2 , wherein the catalyst is an exhaust oxidation catalyst claim 2 , and wherein the introducing includes initiating introduction of ionized air when a catalyst temperature is below a threshold claim 2 , continuing to introduce the ionized air until the catalyst temperature is at the threshold claim 2 , and discontinuing the introduction of ionized air when the catalyst temperature is above the threshold.4. The method of claim 3 , wherein the introducing includes operating an electric air pump and an ionizer so as to add a threshold portion of aircharge received at the catalyst with ionized air claim 3 , the threshold portion based on the catalyst temperature relative to the threshold.5. The method of claim 3 , further comprising claim 3 , adjusting one or more of an amount of ionized air introduced claim 3 , a rate of introduction of the ionized air claim 3 , and a duration of introduction of the ionized air based on the catalyst temperature relative to the threshold.6. The method of claim 2 , wherein the oxidizing includes oxidizing organic matter in a mixing chamber coupled downstream of the exhaust catalyst claim 2 , and releasing the oxidized organic matter from the mixing chamber into an exhaust tailpipe.7. The method of claim 1 , wherein the introducing ...

ON-SITE REGENERATION METHOD OF DENITRATION CATALYST IN EXHAUST GAS PURIFICATION SYSTEM

In an exhaust gas purification system provided with a denitration catalyst layer, a reducing agent oxidation catalyst layer is installed together; a reducing agent and air are supplied into the reducing agent oxidation catalyst layer at the time of catalyst regeneration of the denitration catalyst layer; a high-temperature oxidation reaction gas is produced by a reaction heat generated by an oxidation reaction of the reducing agent and the air in this reducing agent oxidation catalyst layer; and this high-temperature oxidation reaction gas is introduced into the denitration catalyst layer to heat the denitration catalyst, thereby recovering a denitration performance of the catalyst. 1. An on-site regeneration method of a denitration catalyst in an exhaust gas purification system , which is characterized in that in an exhaust gas purification system of purifying an exhaust gas by adding a reducing agent-entrained air to an exhaust gas on the upstream side of a denitration catalyst layer installed in an exhaust passage of an internal combustion engine and reducing nitrogen oxides in the exhaust gas in the denitration catalyst layer , thereby purifying the exhaust gas , a reducing agent oxidation catalyst layer is installed together; a reducing agent and air are supplied into the reducing agent oxidation catalyst layer at the time of catalyst regeneration of the denitration catalyst layer; a high-temperature oxidation reaction gas is produced by a reaction heat generated by an oxidation reaction of the reducing agent and the air in this reducing agent oxidation catalyst layer; and this high-temperature oxidation reaction gas is introduced into the denitration catalyst layer to heat the denitration catalyst , thereby regenerating the denitration catalyst.2. The on-site regeneration method of a denitration catalyst in an exhaust gas purification system according to claim 1 , which is characterized in that a heating temperature of the denitration catalyst by the high- ...

TEMPERING SYSTEM FOR GAS TURBINE SELECTIVE CATALYST REDUCTION SYSTEM

A gas turbine engine system is equipped with a tempering system for a selective catalyst reduction system. The subject tempering system for a selective catalyst reduction system comprises a tempering compartment equipped with a plurality of relatively high temperature environment self-supporting pipes, and optionally, a plurality of flow vanes. 2. The system of claim 1 , further comprising flow vanes arranged within the first pipe arrangement.3. The system of claim 1 , further comprising flow vanes arranged within the first pipe arrangement and arranged within the second pipe arrangement.4. The system of claim 1 , further comprising a tempering fluid supply operable to supply a tempering fluid to the tempering compartment via the plurality of openings.5. The system of claim 1 , wherein the first pipe arrangement is arranged horizontally extending between opposed side walls of the tempering compartment.6. The system of claim 1 , wherein the first pipe arrangement is arranged vertically extending from a bottom to a top of the tempering compartment.7. The system of claim 1 , wherein the one or more openings supply a tempering fluid to the tempering compartment in a plurality of directions.8. The system of claim 1 , wherein the one or more openings are arranged along an entire length of the pipes claim 1 , in a first end region of the pipes claim 1 , in a middle region of the pipes claim 1 , in a second end region of the pipes claim 1 , or a combination thereof.9. A method of using a gas turbine engine system comprising:supplying a polluted combustion gas comprising a pollutant content generated by a gas turbine engine to a downstream tempering system, the tempering system comprising a tempering compartment comprising an inlet, an outlet, at least one arrangement pair comprising a first pipe arrangement and a second pipe arrangement spaced a distance apart, a mix area in the distance between the first pipe arrangement and the second pipe arrangement, with the first pipe ...

METHODS AND SYSTEMS FOR AN AFTERTREATMENT SYSTEM

Methods and systems are provided for an aftertreatment system. In one example, a method comprises regenerating a NOtrap during an engine shut-down event. The method further comprises reversing a direction of flow of a gas through a HP-EGR passage during the regenerating. 1. A method for regenerating a NOx storage catalytic converter of an exhaust gas aftertreatment device of an internal combustion engine arrangement comprising an internal combustion engine , an electrically driven supercharger , a high pressure exhaust gas recirculation flow channel , a low pressure exhaust gas recirculation flow channel with an inlet downstream of the NOx storage catalytic converter , and an exhaust gas valve arranged downstream of the inlet of the low pressure exhaust gas recirculation flow channel , wherein the regenerating comprises:detecting a shut-down of the internal combustion engine;determining a load of the NOx storage catalytic converter;determining a current operating temperature of the NOx storage catalytic converter;regenerating the NOx storage catalytic converter in response to the load exceeding a threshold load and the current operating temperature exceeding a threshold temperature, wherein the regenerating comprises a mixture of air and recirculated exhaust gas being conducted via the electrically driven supercharger, wherein the regenerating comprises closing the exhaust gas valve.2. The method of claim 1 , further comprising flowing exhaust gas and fresh air through the low pressure exhaust gas recirculation flow channel claim 1 , wherein the low pressure exhaust gas recirculation flow channel comprises a low pressure exhaust gas recirculation valve claim 1 , wherein the low pressure exhaust gas recirculation valve is opened before the regenerating of the NOx storage catalytic converter claim 1 , further comprising flowing the fresh air and the exhaust gas through the high pressure exhaust gas recirculation flow channel claim 1 , wherein the high pressure exhaust ...

Aftertreatment System for Simultaneous Emissions Control in Stationary Rich Burn Engines

A catalyst system may include a three-way catalyst that may receive exhaust gases from an engine and convert the exhaust gases to first converted exhaust gases. An ammonia slip catalyst may receive the first converted exhaust gases and convert the first converted exhaust gases to second converted exhaust gases. A hydrocarbon oxidation catalyst may receive the second converted exhaust gases and convert the second converted exhaust gases to third converted exhaust gases. 1. A system comprising: a three-way catalyst that receives exhaust gases from an engine and converts the exhaust gases to first converted exhaust gases;', 'an ammonia slip catalyst that receives the first converted exhaust gases and converts the first converted exhaust gases to second converted exhaust gases;', 'a hydrocarbon oxidation catalyst that receives the second converted exhaust gases and converts the second converted exhaust gases to third converted exhaust gases; and', 'a mid-bed air injection system that injects air into the first converted exhaust gases upstream of the ammonia slip catalyst and injects air into the second converted exhaust gases upstream of the hydrocarbon oxidation catalyst., 'an exhaust aftertreament system, comprising2. The system of claim 1 , wherein the ammonia slip catalyst comprises a precious metal loading and a zeolite coating.3. The system of claim 2 , wherein the precious metal loading comprises at least one of platinum or palladium.4. The system of claim 1 , wherein the ammonia slip catalyst converts carbon monoxide in the first converted exhaust gases to carbon dioxide.5. The system of claim 4 , wherein the ammonia slip catalyst converts ammonia in the first converted exhaust gases to nitrogen.6. The system of claim 1 , comprising the engine coupled to the exhaust aftertreatment system.7. The system of claim 6 , wherein the engine comprises a rich burn internal combustion engine.8. A method comprising:receiving exhaust gases from an engine at a three-way ...

Filter Device

A filter device has a filter housing and a plate-shaped filter element that is arranged in the filter housing. The filter element has oppositely positioned lateral surfaces that form an inflow side for a fluid to be filtered and an outflow side for the clean fluid. A first clean fluid outflow opening is introduced into the filter housing for discharging the clean fluid. An outflow pipe passes through the filter element for discharging the clean fluid through a second clean fluid outflow opening provided at the outflow pipe. The first clean fluid outflow opening is arranged at a spacing relative to the outflow pipe. 1. A filter device comprising:a filter housing;a filter element that is plate-shaped and arranged in the filter housing, the filter element comprising oppositely positioned lateral surfaces that form an inflow side for a fluid to be filtered and an outflow side for the clean fluid;a first clean fluid outflow opening introduced into the filter housing and configured to discharge the clean fluid;an outflow pipe passing through the filter element and configured to discharge the clean fluid through a second clean fluid outflow opening provided at the outflow pipe;wherein the first clean fluid outflow opening is arranged at a spacing relative to the outflow pipe.2. The filter device according to claim 1 , wherein the first clean fluid outflow opening has a cross-sectional area that is greater than a cross-sectional area of the outflow pipe.3. The filter device according to claim 1 , wherein the filter element comprises an opening and the outflow pipe is arranged in the opening.4. The filter device according to claim 3 , further comprising a sealing element that is inserted into the opening claim 3 , wherein the outflow pipe is resting on the sealing element.5. The filter device according to claim 4 , further comprising a support part arranged on a housing component of the filter housing claim 4 , wherein the support part is supported on the filter element.6. ...

SECONDARY AIR INJECTION SYSTEM

A secondary air injection system may include an engine that includes a plurality of cylinders that generate a driving torque of a vehicle by combustion of a fuel; a main line connected to an exhaust manifold or an exhaust line which is connected to the plurality of cylinders; a recirculation line which is branched from the main line and then connected to an intake manifold; an air injection line which is branched from the main line and then connected to an intake line; and an electric supercharger which is provided in the intake line. 1. A secondary air injection system comprising:an engine that includes at least a cylinder that generates a driving torque of a vehicle by combustion of a fuel;a main line connected to an exhaust manifold or an exhaust line which is connected to the at least a cylinder;a recirculation line which is branched from the main line and connected to an intake manifold;an air injection line which is branched from the main line and connected to an intake line connected to an intake manifold; andan electric supercharger which is provided in the intake line.2. The secondary air injection system of claim 1 , wherein the air injection line is connected to the intake line at a downstream side of the electric supercharger.3. The secondary air injection system of claim 1 , further including an intercooler which is provided in the main line.4. The secondary air injection system of claim 1 , further including:a recirculation valve which is provided in the recirculation line to control an amount of a recirculation gas recirculated through the main line and the recirculation line; andan air amount control valve which is provided in the air injection line and controls an air amount injected to the exhaust manifold or the exhaust line through the air injection line and the main line.5. The secondary air injection system of claim 4 , wherein claim 4 , when exhaust gas recirculation is required claim 4 , the air amount control valve is closed and the ...

Calibrated Non-Thermal Plasma Systems for Control of Engine Emissions

The instant invention is based on techniques for using non-thermal plasma reactors in both the main exhaust pipe and in the exhaust gas recirculation feed pipe to reduce particulate matter sufficiently to meet EPA limits for PM and enhanced exhaust gas recirculation to meet NOx limits. More specifically, it is based upon the use of a non-thermal plasma device in which a high voltage charge in the plasma reactor causes extremely rapid oxidation of soot particles in the exhaust stream of an engine and further chemical reactions that aid in the reduction of NOx. The primary benefit of this technology is that it can be calibrated to optimize both soot and NOx reduction. 1. A calibrated non-thermal plasma system for control of internal combustion engine emissions , comprising:an internal combustion engine including an exhaust gas recirculation system receiving exhaust gas from an outlet for said engine and recirculating a portion of said exhaust gas to an engine intake for said engine while a remaining portion of said exhaust gas exits said recirculation system via a recirculation system outlet for processing in aftertreatment systems before exiting to the atmosphere;at least one non-thermal plasma reactor receiving and processing exhaust gas from said recirculation system intermediate said engine outlet and said recirculation system outlet;an air source providing air for injection into said exhaust stream intermediate said engine and said non-thermal plasma reactor via a control valve; anda control system to maximize removal of particulate matter from said exhaust gas stream comprising an electronic control module controlling at least one of power provided to said non-thermal plasma reactor, and said control valve providing air for injection into said exhaust stream.2. The system of claim 1 , wherein said aftertreatment systems include at least one of:a diesel oxidation catalyst,a diesel particulate filter, anda selective catalytic reduction system.3. The system of ...

ARRANGEMENT FOR AN EXHAUST GAS AFTERTREATMENT SYSTEM

Arrangement () for an exhaust gas aftertreatment system (), comprising a tank () for storing a reducing agent (); a pump unit arrangement () arranged in downstream fluid communication with the tank; a nozzle () arranged to inject a flow of reducing agent into the exhaust gas aftertreatment system (), the nozzle being arranged in downstream fluid communication with the tank, via the pump unit arrangement, by means of a reducing agent conduit (); an air conduit () arranged in fluid communication with the nozzle () for delivery of compressed air to the nozzle; and a return conduit () arranged in fluid communication between the reducing agent conduit and the tank, the return conduit comprising a return conduit valve arrangement (), wherein the air conduit () is arranged in fluid communication with the reducing agent conduit () for controllably delivery of reducing agent to the tank via the return conduit valve arrangement () by means of providing compressed air from the air conduit 115.-. (canceled)16100102. An arrangement () for an exhaust gas aftertreatment system () , the arrangement comprising:{'b': 104', '106, 'a tank () for storing a reducing agent ();'}{'b': '108', 'a pump unit arrangement () arranged in downstream fluid communication with the tank;'}{'b': 110', '102', '112, 'a nozzle () arranged to inject a flow of reducing agent into the exhaust gas aftertreatment system (), the nozzle being arranged in downstream fluid communication with the tank, via the pump unit arrangement, by means of a reducing agent conduit ();'}{'b': 114', '110, 'an air conduit () arranged in fluid communication with the nozzle () for delivery of compressed air to the nozzle; and'}{'b': 116', '118', '114', '112', '118', '120', '110', '114', '112', '120, 'a return conduit () arranged in fluid communication between the reducing agent conduit and the tank, the return conduit comprising a return conduit valve arrangement (), wherein the air conduit () is arranged in fluid communication ...

Power generation system exhaust cooling

An airflow control system control system for a gas turbine system according to an embodiment includes: an airflow generation system including a plurality of air moving systems for selective attachment to a rotatable shaft of a gas turbine system, the airflow generation system drawing in an excess flow of air through an air intake section; and a mixing area for receiving an exhaust gas stream of the gas turbine system; the airflow generation system: directing a first portion and a second portion of the excess flow of air generated by the airflow generation system into the mixing area to reduce a temperature of the exhaust gas stream; and directing a third portion of the excess flow of air generated by the airflow generation system into a discharge chamber of a compressor component of the gas turbine system.

Exhaust gas purification device for ship

An exhaust gas purification device for a ship 1 including: a main path 31 communicated with outside and a bypass path 32 branching off from a midway portion of the main path 31, each of the paths serving as an exhaust gas path 30 of an engine 25 to be mounted in the ship 1. A partition plate 40, by which the main and bypass paths 31, 32 are partitioned from the upstream side to the downstream side in an exhaust gas traveling direction, extends along the exhaust gas traveling direction. The partition plate 40 has a downstream end extended through between an exhaust gas outflow port 49 of the purification casing 33 and an exhaust gas outlet of the main path 31, and the downstream end is formed with an opening 401 to serve as a reverse-flow prevention plate 400.

METHOD FOR OPERATING A DRIVE DEVICE AND CORRESPONDING DRIVE DEVICE

A method for operating a drive device includes heating a hot air stream with a heating device integrated in a cylinder head of an internal combustion engine of the drive device, wherein the internal combustion engine is connected with an exhaust gas system; mixing the hot air stream upstream of a catalytic converter with a cold fresh air stream for adjusting a defined temperature of the hot air stream; and supplying the hot air stream having the adjusted defined temperature to the catalytic converter in at least one operating state of the internal combustion engine so as to heat the catalytic converter. 110.-. (canceled)11. A method for operating a drive device , comprising:heating a hot air stream with a heating device integrated in a cylinder head of an internal combustion engine of the drive device, said internal combustion engine being connected with an exhaust gas system;mixing the hot air stream upstream of a catalytic converter with a cold fresh air stream for adjusting a defined temperature of the hot air stream; andsupplying the hot air stream having the adjusted defined temperature to the catalytic converter in at least one operating state of the internal combustion engine so as to heat the catalytic converter.12. The method of claim 11 , wherein the cold fresh air stream is conducted through at least one cylinder of the internal combustion engine claim 11 , said at least one cylinder being deactivated or operated in a trailing throttle mode.13. The method of claim 11 , further comprising branching off a cold air stream from the cold fresh air stream at a retrieval point upstream of the internal combustion engine claim 11 , and conducting the cold air stream to the heating device.14. The method of claim 13 , further comprising compressing a fresh air stream upstream of the retrieval point with a compressor claim 13 , said cold air stream and said cold fresh air stream originating from the fresh air stream.15. The method of claim 11 , further comprising ...

UREA WATER SPRAYING DEVICE

A urine water spraying device is provided with: a urine water spraying nozzle for spraying urine water into an exhaust passageway of an engine ; an assist gas spraying nozzle for spraying an assist gas for promoting atomization of the urine water that has been sprayed by suctioning the urine water sprayed from the urine water spraying nozzle and blowing the urine water into the exhaust passageway ; and an assist gas supply passageway for supplying the assist gas spraying nozzle with exhaust passing through the exhaust passageway as the assist gas. 1. A urea water spraying device comprising:a urea water spraying nozzle that is configured to spray urea water into an exhaust passage of an engine;an assist gas spraying nozzle that is configured to spray an assist gas for promoting atomization of the urea water sprayed from the urea water spraying nozzle by sucking the sprayed urea water and blowing the urea water into the exhaust passage; andan assist gas supply passage that is configured to supply the assist gas spraying nozzle with an exhaust gas passing through the exhaust passage as the assist gas.2. The urea water spraying device according to claim 1 ,wherein the urea water spraying nozzle sprays the urea water toward a position in the exhaust passage downstream of a filter disposed in the exhaust passage in an exhaust flow direction and upstream of a NOx selective reduction catalyst disposed in the exhaust passage in the exhaust flow direction, andwherein an assist gas intake port of the assist gas supply passage is disposed at a position in the exhaust passage downstream of the filter in the exhaust flow direction and upstream of a position where the urea water is sprayed from the urea water spraying nozzle in the exhaust flow direction.3. The urea water spraying device according to claim 1 ,wherein the assist gas spraying nozzle includes a first portion disposed coaxially with the urea water spraying nozzle so as to surround a periphery of the urea water ...

EXHAUST TREATMENT SYSTEMS AND METHODS INVOLVING OXYGEN SUPPLEMENTATION AND HYDROCARBON TRAPPING

An exhaust treatment apparatus and method for providing a controlled and well-timed feeding of supplemental oxygen to offset low oxygen content in exhaust flow passing over a desorbing hydrocarbon trap that previously accumulated hydrocarbons during a cold start cycle. Included is an ambient air injection system and associated control unit to offset the lacking oxygen level upstream of a reaction area for a downstream uf-HCT (preferably catalyzed with TWC material) with the exhaust placed in a lean state upon contact with the uf-HCT. An air injection embodiment makes use of preexisting vehicle components as to provide for a minimization of added components to a vehicle, while still addressing the need to clean-up exhaust emissions in an effort to satisfy stringent emission control requirements, such as those set forth in LEVIII. 1. A system for a gasoline engine exhaust emission reduction , comprising:an underfloor hydrocarbon trap (uf-HCT),a supplemental oxygen supply apparatus feeding oxygen to the exhaust reaching the uf-HCT,a control unit in communication with the supplemental oxygen supply apparatus as to feed oxygen to the uf-HCT during a time of HC desorption from the uf-HCT and wherein the control unit feeds the excess oxygen to the uf-HCT as to place the exhaust flow in contact with the uf-HCT in lean state.2. The system of wherein the control unit feeds excess oxygen to the uf-HCT by feeding air to the exhaust flow at an injected air mass flow rate into the exhaust passing to or in the uf-HCT of 1 to 30 L/s.3. The system of further comprising an added catalyzing material provided on the uf-HCT as to promote the removal of HC during the time of both HC desorption from the uf-HCT and control unit supplied excess oxygen.43. The system of further comprising one or more upstream catalyst(s).5. The system of wherein the one or more upstream catalyst(s) includes at least one TWC close coupled catalyst.6. The system of wherein the added catalyzing material ...

EXHAUST GAS SYSTEM

The exhaust gas system includes a catalytic converter having an inlet and an outlet, a primary exhaust pipe, an exhaust nozzle and a secondary exhaust pipe. The primary exhaust pipe includes a proximate end and a distal end. The primary exhaust pipe may be affixed to the outlet of the catalytic converter at the proximate end of the primary exhaust pipe. The secondary exhaust pipe may be coupled to the distal end of the primary exhaust pipe via the exhaust nozzle. The exhaust nozzle includes a body region which is integral to a frustoconical defined region. The body region of the exhaust nozzle may be engaged to the distal end of the primary exhaust pipe. The frustoconical defined region of the exhaust nozzle may be engaged to the secondary exhaust pipe. 1. An exhaust gas system comprising:a catalytic converter having an inlet and an outlet;a primary exhaust pipe having a proximate end and a distal end, the primary exhaust pipe affixed to the outlet of the catalytic converter at the proximate end; anda secondary exhaust pipe coupled to the distal end of the primary exhaust pipe via an exhaust nozzle having a body region integral to a frustoconical defined region, the body region of the exhaust nozzle being engaged to the distal end of the primary exhaust pipe, and the frustoconical defined region of the exhaust nozzle being engaged to the secondary exhaust pipe.2. The exhaust gas system as defined in wherein the secondary exhaust pipe includes a nozzle end and an exhaust end claim 1 , the secondary exhaust pipe defining a plurality of apertures proximate to the nozzle end of the exhaust pipe.3. The exhaust gas system as defined in wherein the plurality of apertures in the secondary exhaust pipe and the frustoconical defined region of the exhaust nozzle are configured to disperse a hot exhaust gas flow from the catalytic converter into a cooler ambient air flow from the plurality of apertures within the secondary exhaust pipe.4. The exhaust gas system as defined in ...

METHOD AND DEVICE FOR CONTROLLING AND/OR MONITORING THE FUNCTION OF A SECONDARY AIR SUPPLY IN AN EMISSION CONTROL SYSTEM

In a method and device for controlling and/or monitoring the function of a secondary air supply in an emission control system of an internal combustion engine, the emission control system includes at least two catalytic converters situated in succession in an exhaust duct, it being possible for the second catalytic converter to be implemented as a combination of catalytic converter and particulate filter. For a secondary air diagnosis and for secondary air control, a two-point lambda probe is situated, with respect to a direction of flow of exhaust gas, downstream of the first catalytic converter. Measures are applied for compensating tolerance and aging effects of the two-point lambda probe. This results in particular in cost advantages in emission control systems for fulfilling stricter emission requirements. In particular, this makes it possible to operate the particulate filter in optimized fashion. 1. A method for at least one of controlling and monitoring a function of a secondary air supply in an emission control system of an internal combustion engine , the emission control system , in its central section , including a first catalytic converter and a second catalytic converter situated in an exhaust duct in succession , a first lambda probe being situated , with respect to a direction of flow of exhaust gas , downstream of an engine block and upstream of the first catalytic converter , an exhaust gas probe being situated upstream of the second catalytic converter , air being introducible between the first and second catalytic converters by the secondary air supply for an optimized operation of the second catalytic converter , wherein a two-point lambda probe is situated downstream of the first catalytic converter and of the secondary air supply , the method comprising:using the two-point lambda probe for at least one of a secondary air diagnosis and a secondary air control; andapplying to the two-point lambda probe measures that compensate tolerance and ...

Calibrated Non-Thermal Plasma Systems for Control of Engine Emissions

The instant invention is based on techniques for using non-thermal plasma reactors in both the main exhaust pipe and in the exhaust gas recirculation feed pipe to reduce particulate matter sufficiently to meet EPA limits for PM and enhanced exhaust gas recirculation to meet NOx limits. More specifically, it is based upon the use of a non-thermal plasma device in which a high voltage charge in the plasma reactor causes extremely rapid oxidation of soot particles in the exhaust stream of an engine and further chemical reactions that aid in the reduction of NOx. The primary benefit of this technology is that it can be calibrated to optimize both soot and NOx reduction. 1. A calibrated non-thermal plasma system for control of internal combustion engine emissions , comprising:an internal combustion engine including an exhaust gas recirculation system receiving exhaust gas from an outlet for said engine and recirculating a portion of said exhaust gas to an engine intake for said engine while a remaining portion of said exhaust gas exits said recirculation system via a recirculation system outlet for processing in aftertreatment systems before exiting to the atmosphere;at least one non-thermal plasma reactor receiving and processing exhaust gas from said recirculation system intermediate said engine outlet and said recirculation system outlet;an air source providing air for injection into said exhaust stream intermediate said engine and said non-thermal plasma reactor via a control valve; anda control system to maximize removal of particulate matter from said exhaust gas stream comprising an electronic control module controlling at least one of power provided to said non-thermal plasma reactor, and said control valve providing air for injection into said exhaust stream.2. The system of claim 1 , wherein said aftertreatment systems include at least one of:a diesel oxidation catalyst,a diesel particulate filter, anda selective catalytic reduction system.3. The system of ...

Method and device for exhaust gas aftertreatment in an internal combustion engine

Moreover, according to the invention, an exhaust gas aftertreatment system for carrying out such a method is being proposed.

EXHAUST AFTERTREATMENT SYSTEM AND METHOD FOR REGENERATING A PARTICULATE FILTER

The invention relates to an exhaust aftertreatment system for an internal combustion engine (). The exhaust aftertreatment system comprises an exhaust system () having at least one three-way catalyst () near the engine, wherein a particulate filter () is arranged downstream from the three-way catalyst, preferably in an underbody installation in a motor vehicle. A heated catalyst (), which has at least one heating stage () that can be heated by means of an electric heating element (), is provided upstream from the at least one three-way catalyst () and downstream from the particulate filter (). It is provided that the at least one electrically heatable heating stage () is supplied with electric power directly from a generator () that is operatively connected to the internal combustion engine (), so that heating of the heated catalyst () takes place essentially independently of the charge status of the vehicle battery (). The invention also relates to a method for regeneration of a particulate filter () in the exhaust system () of an internal combustion engine () by means of such an exhaust aftertreatment system. 11020222428222426727476782224287274767846107274767846. An exhaust aftertreatment system for an internal combustion engine () having an exhaust system () comprising a three-way catalyst ( , ) near the engine and a particulate filter () arranged downstream from the three-way catalyst ( , ) near the engine , characterized in that a heated catalyst () having at least one electric heating element ( , , , ) is arranged downstream from the three-way catalyst ( , ) and upstream from the particulate filter () , wherein the electric heating element ( , , , ) is connected to a generator () of the internal combustion engine () so that heating of the at least one electric heating element ( , , , ) is possible directly by the electric power generated by the generator ().22672747678. The exhaust aftertreatment system according to claim 1 , characterized in that the heated ...

Verfahren zur Abgasnachbehandlung und Vorrichtung zur Reinigung des Abgases einer Brennkraftmaschine

Es werden ein Verfahren und eine Vorrichtung zur Abgasnachbehandlung einer Brennkraftmaschine (10) offenbart, umfassend einen Abgaskanal (12), einen im Abgaskanal (12) angeordneten ersten Drei-Wege-Katalysator (14), einen in Strömungsrichtung des Abgases nachfolgenden Partikelfilter (18), wobei in Strömungsrichtung des Abgases vor dem Partikelfilter (18, 18') Mittel zur Sekundärlufteinbringung (20) in den Abgaskanal (12) und ein zweiter Drei-Wege-Katalysator (16) im Abgaskanal (12) angeordnet sind oder der Partikelfilter (18') eine drei-Wege-katalytische Beschichtung aufweist, umfassend folgende Schritte: Betreiben der Brennkraftmaschine (10) mit einem stöchiometrischen Verbrennungsluftverhältnis; Ermitteln eines Beladungszustandes eines im Abgaskanal (12) der Brennkraftmaschine (10) angeordneten Partikelfilters (18); bei Erfordernis Anhebung der Abgastemperatur auf eine Regenerationstemperatur des Partikelfilters (18) durch Verstellen einer Gemischbildung für die Brennkraftmaschine (10) auf fett und Einbringen von Sekundärluft in den Abgaskanal (12), so dass in einer Heizphase des Partikelfilters (18, 18') in dem zweiten Drei-Wege-Katalysator (16) oder dem katalytisch beschichteten Partikelfilter (18') das fette Verbrennungsabgas durch die Sekundärluft exotherm oxidiert wird; und Betreiben der Brennkraftmaschine (10) während einer Regenerationsphase des Partikelfilters (18, 18') mit fettem oder stöchiometrischem Gemisch.

EXHAUST FLUID INJECTOR ASSEMBLY

An injector for a diesel exhaust fluid (DEF) delivery system includes a first conduit extending along a longitudinal direction; a second conduit extending along the longitudinal direction and disposed within the first conduit; a nozzle tip having a side wall and an end wall; and a shell surrounding the first conduit and being spaced apart from the first conduit along a radial direction. The side wall has a thickness extending along the radial direction from an external surface of the nozzle tip to an inner surface of the second conduit. The end wall defines an outlet flow passage therethrough, and the outlet flow passage is in fluid communication with the first conduit and the second conduit via a chamber defined by an internal surface of the nozzle tip.

METHOD FOR UNBLOCKING PORES IN A SELECTIVE CATALYTIC REDUCTION CATALYST

The invention concerns a method for unblocking pores in a metal zeolite based selective catalytic reduction (SCR) catalyst. The method includes filling, at least partially, the SCR catalyst with a liquid, the liquid being preferably distilled water. The method includes letting said liquid inside the SCR catalyst enough time to allow said liquid to dissolve, at least partially, the obstructions and to penetrate into the pores. The method includes heating the SCR catalyst at a temperature above the ebullition temperature of the liquid so as to vaporize the part of the liquid remained into the pores, and generate steam flows through the obstructions, the steam flows removing the obstructions and unblocking the pores, wherein no hydrocarbons are injected during the step of heating. 1. A method for unblocking pores blocked by obstructions , inside a selective catalytic reduction (SCR) catalyst comprising a zeolite , whereby the SCR catalyst is contained inside a muffler which is part of an exhaust after treatment system (EATS) of a vehicle , wherein the method includes:filling in which a liquid is introduced inside the muffler so as to fully immerse each SCR catalyst into the liquid;soaking during which a proportion of the liquid introduced inside the muffler spreads into the pores of the zeolite;draining, at which the excess of liquid introduced inside the muffler is removed out of the muffler; anddrying, at which the SCR catalyst is heated at a temperature above an ebullition temperature of the liquid so as to vaporize the liquid remaining in the pores and generate steam flows through the obstructions, the steam flows removing the obstructions and unblocking the pores, and wherein no hydrocarbons are injected during the drying.2. The method according to claim 1 , wherein the step of drying comprises letting hot gas claim 1 , comprising at least one of exhaust gas or hot air claim 1 , flowing through the muffler.3. The method according to claim 1 , further comprising a ...

Check valve for a gas line

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具有nsc系统的汽油发动机总成和方法

本发明涉及一种汽油发动机总成和一种用于运行汽油发动机总成的方法，其中，该汽油发动机总成包括汽油发动机(1)和具有主催化器(3)、汽油发动机颗粒过滤器(4)和NO x 存储催化器(10)的废气处理设备(2)，其中，该主催化器(3)设计成或用作三元催化器，其中，在主催化器(3)的下游设置或许用作四元催化器的汽油发动机颗粒过滤器(4)，其中，在汽油发动机颗粒过滤器(4)下游设置NO x 存储催化器(10)，并且其中，或许在NO x 存储催化器(10)之前设置氧化催化器(18)。

System with heated catalytic neutralizer and water catcher installed ahead of said neutralizer and method of system operation control

FIELD: neutralization of exhaust gases of internal combustion engines. SUBSTANCE: system has the following components located in indicated sequence in direction of exhaust gases flow: the first water catcher 5, honeycomb member 7 with electric heating and honeycomb member 8 with catalytically active coating serving, at least, for oxidation catalysis. Honeycomb member 7 with electric heating and honeycomb member 8 with electric heating and honeycomb member 8 with catalytically active coating may also fully or partially form single design unit. Similar system may be installed as small additional system behind three-component catalytic neutralizer of exhaust gases for neutralization of exhaust gases during start of cold engine. Method of system operation control provides for heating of honeycomb member with electrical heating started not later than at the moment of start of internal combustion engine. EFFECT: reduced content of harmful substances in exhaust gases of vehicles. 16 cl, 2 dwg 2212929 С2 КО РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (51) МПК?” (11) < < <\ Ах \(13) \ В ОТО 53/94, Е 01 М 3/20 (12 ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ИЗОБРЕТЕНИЕ (21), (22) Заявка: 2000120923/12, 07.01.1999 (24) Дата начала действия патента: 07.01.1999 (30) Приоритет: 09.01.1998 ОЕ 19800654.3 (43) Дата публикации заявки: 27.08.2002 (46) Опубликовано: 27.09.2003 (56) Список документов, цитированных в отчете о поиске: ЕР 0638710 А2, 15.02.1995. ЕР 0747581 А1, 11.12.1996. ЗЦ 288804 А, 05.12.1974. $Ц 1809134 А, 15.04.1993. КЦ 2100631 С1, 27.12.1997. ОЕ 3629945 АЛ, 01.10.1987. ЕР 0393257 АЛ, 24.10.1990. ЕР 0485179 А2, 13.05.1992. 4$ 5413767 А\, 09.05.1995. М/О 9610127 А\, 04.04.1996. (85) Дата перевода заявки РСТ на национальную фазу: 09.08.2000 (86) Заявка РСТ: ЕР 99/00046 (07.01.1999) (87) Публикация РСТ: М/О 99/34902 (15.07.1999) Адрес для переписки: 101000, Москва, пер. М.Златоустинский, 10, кв.15, бюро "ЕВРОМАРКПАТ", М.Б. ...

具有由自压控制的阀的气泵

泵单元(14)具有气泵(12)和阀装置(13)，其中阀装置(13)具有压力腔(44)和压力控制装置(53)，因此来自气泵(12)的空气被引入压力腔(44)并且压力腔(44)中的压力由压力控制装置(53)控制。泵单元(14)具有出口(42)，其开口由一个被膜片(46)驱动的阀体(43)控制，因此通过出口(42)将要供应的空气量由压力腔(44)的压力控制。

Filtration and combustion process for carbon particulate matter from an internal combustion engine

The object of the invention is a filtration and combustion process for carbon particulate matter from an internal combustion engine. The process is characterized by the following steps: a rare earth or rare earth mixture derivative is introduced into the fuel at a concentration of 10 ppm to 500 ppm (by weight), and preferably of 20 ppm to 200 ppm; the soot produced by the internal combustion engine is collected on a filter, the temperature of the gases entering the filter being selected in the range of 100 ~C to 350 ~C; the soot is allowed to build up until a significant fraction or rate of incoming soot is balanced by the combustion of soot in the soot cake on the filter, and no regeneration is effected as long as the head loss caused by the soot does not exceed a preselected value and is not higher than 400 millibars. This invention is useful for organic synthesis.

Exhaust control apparatus

Perfectionnements apportés aux dispositifs d'épuration catalytique des gaz d'échappement pour moteurs à combustion interne

Catalytic converter having plural reaction stages with temperature-comparing means therein

A catalytic converter for controlling unburned emissions from automotive exhaust gases includes a reactor chamber having inlet and outlet openings for passage of the exhaust gases therethrough. Oxidizing catalyst devices are distributed along the reactor chamber between the inlet and outlet openings for contact by exhaust gases flowing therethrough. Secondary air feed means is provided for feeding secondary air into the reactor chamber at a plurality of spaced-apart locations between the inlet and outlet openings. The secondary air feed means includes a conduit extending in a tortuous path through the reactor chamber for pre-heating secondary air flowing through the conduit prior to discharge into the reactor chamber. The flow rate and distribution of secondary air are arranged to prevent overheating of the catalyst. Malfunction of the converter is detected by comparing temperatures in the last two stages or by sensing the absolute temperature of the last stage.

Secondary air sucking device

Catalytic performance maintenance apparatus of scr system

SCR 시스템의 촉매 성능유지 장치는 SCR 촉매가 설치된 SCR 반응기; T/C(Turbo Charger)를 거쳐 나오는 배기가스를 SCR 반응기 측으로 유도하는 주 배기라인; SCR 반응기의 온도를 감지하는 온도 감지기; 및 T/C 전단에서 바이패스되는 배기가스와 공기 간의 상호 열교환으로 공기의 온도를 높여 고온의 공기를 공급하는 공기 가열기를 포함하여, SCR 반응기로의 배기가스 유입을 차단한 상태에서 공기 가열기로부터 공급되는 고온의 공기를 통해 SCR 반응기의 온도를 타겟 온도 이상으로 상승시킬 수 있도록 구성된다. 이에 따라, 촉매재생이나 히팅 및 벤팅 운전시 소요되는 에너지를 절감하여 열 효율을 높일 수 있고, 배기가스가 아닌 공기를 사용하여 배기가스로 인한 불필요한 촉매 피독을 최소화할 수 있다. The device for maintaining catalyst performance of the SCR system includes an SCR reactor installed with an SCR catalyst; A main exhaust line for guiding exhaust gas from the T/C (Turbo Charger) to the SCR reactor; A temperature sensor for sensing the temperature of the SCR reactor; And an air heater that supplies high-temperature air by raising the temperature of the air by mutual heat exchange between the exhaust gas and air bypassed at the front end of the T/C, and supplied from the air heater while blocking the inflow of exhaust gas into the SCR reactor. It is configured to increase the temperature of the SCR reactor above the target temperature through the high-temperature air. Accordingly, it is possible to increase thermal efficiency by reducing energy required for catalyst regeneration or heating and venting operations, and to minimize unnecessary catalyst poisoning due to exhaust gas by using air instead of exhaust gas.

Exhaust gas after-treatment system and internal combustion engine

본 발명에 따른 내연 기관의 배기가스 후처리 시스템(3), 즉 SCR 배기가스 후처리 시스템은, 반응실(10)에 수용된 SCR 촉매 컨버터(9)를 구비하고, 반응실(10)로 그리고 이에 따라 SCR 촉매 컨버터(9)로 이어지는 배기가스 공급 라인(8)을 구비하며, 반응실(10)로부터 그리고 이에 따라 SCR 촉매 컨버터(9)로부터 이어져 나오는 배기가스 배출 라인(11)을 구비하고, 환원제, 특히 암모니아 또는 암모니아 전구체 물질을 배기가스에 유입하기 위해 배기가스 공급 라인(8)에 배속되어 있는 유입 장치(16)를 구비하며, 반응실(10) 또는 SCR 촉매 컨버터(9)의 상류측에서 배기가스와 환원제를 혼합하기 위해 유입 장치(16)의 하류측에 배기가스 공급 라인(18)에 의해 마련되는 혼합 섹션(18)을 구비하는 배기가스 후처리 시스템으로서, 반응실(10) 내에, SCR 촉매 컨버터(9)를 퍼징하는 역할을 하는 적어도 하나의 블로우-다운 장치(24)가 배치되어 있는 것이다. The exhaust gas aftertreatment system 3 of an internal combustion engine according to the invention, ie the SCR exhaust gas aftertreatment system, has an SCR catalytic converter 9 housed in a reaction chamber 10 , to and from the reaction chamber 10 . thus having an exhaust gas supply line 8 leading to the SCR catalytic converter 9 , and an exhaust gas exhaust line 11 leading from the reaction chamber 10 and thus from the SCR catalytic converter 9 , reducing agent , in particular having an inlet device 16 attached to the exhaust gas supply line 8 for introducing ammonia or ammonia precursor material into the exhaust gas, in the reaction chamber 10 or upstream of the SCR catalytic converter 9 . An exhaust gas aftertreatment system having a mixing section (18) provided by an exhaust gas supply line (18) downstream of an inlet device (16) for mixing exhaust gas and a reducing agent, in a reaction chamber (10), At least one blow-down device ( 24 ) serving to purge the SCR catalytic converter ( 9 ) is arranged.

Exhaust gas purification device for motorcycle engine

Способ восстановлени сажеулавливающего фильтра дизельного двигател внутреннего сгорани и устройство дл его осуществлени

Использование: в устройствах восстановлени  сажеулавливающего фильтра дизельного двигател  внутреннего сгорани . Сущность изобретени : дл  выжигани  сажи , котора  осаждаетс  в фильтре 10, предусмотрены два сочлененных резонатора Гельмголыда 5 и б, причем отработанный газ подаетс  в резонансную трубу 4, в среднюю ее часть, двум  параллельными потоками. Благодар  зажиганию горелок 12 в колебательной системе создаютс  новые волны давлени . При повышенном давлении в одном из резонансных резервуаров 9 температура в результате адиабатического процесса сжати  повышаетс  так, что сажа в фильтре 10 воспламен етс , и фильтр 10 в результате выжигани  сажи восстанавливаетс . Подачу топливовоздушной смеси и ее воспламенение дл  одного из параллельных потоков через горелку 12 осуществл ют в период прекращени  подачи топливовоздушной смеси во вторую горелку 12 во втором параллельном потоке, резонансные колебани  в резонаторах 5, б осуществл ют в параллельных потоках в противофазе с равными амплитудами, продолжительность подачи топлива производ т равной периоду собственной частоты колебаний.резонаторов 5 и 6, а частоту резонансных колебаний потока отработавших газов при температуре воспламенени  сажи обеспечивают меньше 0,7 частоты пор дка вспышек в цилиндрах двигател . 2 с.и 4 з.п. ф-лы, 3 ил. СП I 00 GJ 00 О СО SQ СлЗ Фиг.1

Exhaust gas after-treatment system and internal combustion engine

내연기관의 배기가스 후처리 시스템, 즉 SCR 배기가스 후처리 시스템은, SCR 촉매 컨버터(9)로 통하는 배기가스 공급 라인(8)을 구비하고, SCR 촉매 컨버터(9)로부터 멀어지게 연장되는 배기가스 배출 라인(11)을 구비하며, 환원제, 특히 암모니아 또는 암모니아 전구체 물질을 배기가스 내로 유입하기 위해 배기가스 공급 라인(8)에 할당되는 유입 장치를 구비하고, 각각의 SCR 촉매 컨버터(9) 상류에서 배기가스를 환원제와 혼합하기 위해 유입 장치의 하류에 있는 배기가스 공급 라인(8)에 의해 마련되는 혼합 섹션을 구비하고, 배기가스 공급 라인(8)은 하류 단부(15)에 의해 SCR 촉매 컨버터(9)를 수용하는 리액터 챔버(10)로 개방되며, 리액터 챔버(10) 내에서 배기가스 공급 라인(8)의 하류 단부(15)와 SCR 촉매 컨버터(9) 사이에서 SCR 촉매 컨버터(9)의 상류에 배기가스 배압을 증가시키는 장치(25)가 위치 설정된다. The exhaust gas aftertreatment system of an internal combustion engine, ie the SCR exhaust gas aftertreatment system, has an exhaust gas supply line 8 leading to an SCR catalytic converter 9 and the exhaust gas extending away from the SCR catalytic converter 9 . upstream of each SCR catalytic converter 9 having an outlet line 11 and an inlet device assigned to the exhaust gas supply line 8 for introducing a reducing agent, in particular ammonia or ammonia precursor material, into the exhaust gas having a mixing section provided by an exhaust gas supply line (8) downstream of the inlet device for mixing the exhaust gas with the reducing agent, the exhaust gas supply line (8) being provided by a downstream end (15) of an SCR catalytic converter ( 9) of the SCR catalytic converter 9 between the downstream end 15 of the exhaust gas supply line 8 and the SCR catalytic converter 9 in the reactor chamber 10 A device 25 is positioned upstream for increasing the exhaust gas backpressure.

排气净化装置

本发明的目的在于提供一种能使NO x 催化剂(14)的净化率(脱硝率)和压差ΔP恢复至初始状态的排气净化装置(1)。排气净化装置(1)通过空气喷射喷嘴(16)向配置有作为催化剂的NO x 催化剂(14)的催化反应器(12)的壳体(13)内喷射加压空气来去除附着于NO x 催化剂(14)的煤尘，其中，通过供给加压空气的喷射阀(17)的操作，使催化反应器(12)内的压力在规定时间t内上升至规定压力ΔIP来去除煤尘。

The gas/gas mixer in waste gas stream for introducing gas into internal combustion engine

本发明一种用于将气体、特别是空气导入到内燃机的废气流中的气体/气体混合器，所述气体/气体混合器包括沿主体纵轴线(L)纵向伸长的混合器主体(32)，其中，在所述混合器主体(32)中构造有气体导入容积(42)，并且在所述混合器主体(32)的界定所述气体导入容积(42)的壁(36)中设置有多个气体通孔(38)，其特征在于，所述混合器主体(32)横向于主体纵轴线(L)构造有削平的横截面轮廓。

Selective catalytic reduction system

An embodiment of the present invention relates to a selective catalytic reduction system including: a main fluid passage which allows exhaust gas to pass therethrough; a reactor provided on the main fluid passage and having a catalyst therein; a sooth blower which sprays air to remove soot from the catalyst; a first opening/closing unit installed on the main fluid passage to switch the flow of the exhaust gas introduced into the reactor; a second opening/closing unit installed on the main fluid passage to switch the flow of the exhaust gas passing through the reactor; a circulation fluid passage which connects one point between the first opening/closing unit and a front end of the reactor with an opposite point between the second opening/closing unit and a rear end of the reactor; a heating unit which raises the temperature of the exhaust gas passing through the circulation fluid passage; an oxygen sensor which detects oxygen concentration inside the circulation fluid passage; and a control unit which controls the first and second opening/closing members and the heating unit which performs a catalyst reproduction operation. The control unit actuates the soot blower to increase oxygen concentration of the circulation fluid passage when an oxygen concentration value detected by the oxygen sensor is less than a preset oxygen concentration value.

Selective Catalytic Reduction System for Energy Saving

본 발명은 촉매 재생이나 가열 및 환기 운전시에 SCR 반응기의 피독을 방지함과 아울러 소비 에너지를 절감하도록 하는 에너지 절감을 위한 SCR 시스템에 관한 것이다. 본 발명은 SCR 반응기에 의해 엔진 배기가스의 질소산화물을 제거하는 배기가스 정화 처리를 진행함에 따라 SCR 반응기에 생성되는 암모늄 이황산염에 기인한 SCR 반응기 촉매의 오염을 제거하여 SCR 반응기의 촉매를 재생하거나, SCR 반응기를 일정 온도로 유지하여 SCR 반응기에 대한 가열 및 환기(heating & venting)를 진행하는 경우에, 주엔진 배기가스 또는 보기엔진 배기가스의 폐열에 의해 가열된 공기를 SCR 반응기에 유입시켜서 SCR 반응기 촉매의 오염을 제거하여 촉매 재생하거나 SCR 반응기에 대한 가열 및 환기를 진행하므로, 촉매 재생이나 가열 및 환기 운전시에 SCR 반응기의 피독을 방지함과 아울러 소비 에너지를 절감하게 된다.

Catalytic performance maintenance apparatus of scr system

SCR 시스템의 촉매 성능유지 장치는 SCR 촉매가 설치된 SCR 반응기; T/C(Turbo Charger)를 거쳐 나오는 배기가스를 SCR 반응기 측으로 유도하는 주 배기라인; SCR 반응기의 온도를 감지하는 온도 감지기; 및 T/C 전단에서 바이패스되는 배기가스와 공기 간의 상호 열교환으로 공기의 온도를 높여 고온의 공기를 공급하는 공기 가열기를 포함하여, SCR 반응기로의 배기가스 유입을 차단한 상태에서 공기 가열기로부터 공급되는 고온의 공기를 통해 SCR 반응기의 온도를 타겟 온도 이상으로 상승시킬 수 있도록 구성된다. 이에 따라, 촉매재생이나 히팅 및 벤팅 운전시 소요되는 에너지를 절감하여 열 효율을 높일 수 있고, 배기가스가 아닌 공기를 사용하여 배기가스로 인한 불필요한 촉매 피독을 최소화할 수 있다.

Exhaust gas purification device for internal combustion engine

Air introduction control device in exhaust pipe of internal combustion engine

흡기측에서 배기측으로 공기를 도입하여 배기가스정회의 효율을 항상시키도록한 내연기관의 배기관내 공기도입제어장치에 있어서, 시동직후의 배기가스온도가 낮은 상태애서의 촉매의 정화효율저하를 방지히는 것을 목적으로, 홉기측에서 배기 측으로 공기를 도입하는 공기 도입관(9)에 제어 밸브(11)를 설치하고 시동중 또는 시동중과 시동직후 소정시간은 제어밸브(11)를 차단하는 내연기관의 배기관내 공기 도입제어장치임.

Diesel internal combustion engine with a heat exchanger for exhaust gas cooling arranged in an exhaust gas recirculation line

External catalyst for small internal combustion engines