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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 14835. Отображено 100.

05-01-2012 дата публикации

Adaptive control of scr urea injection to compensate errors

Номер: US20120000189A1

Автор: Kevin Andrew Gady, Yu Sun, Yue-Yun Wang

Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method for controlling a selective catalytic reduction injection system having a storage tank, a pump, a delivery line, and an injection nozzle includes monitoring the selective catalytic reduction injection system, determining a selective catalytic reduction injector system effective area ratio, comparing the selective catalytic reduction injector system effective area ratio to a threshold, calculating a compensation factor upon surpassing the threshold, and modifying the commanded injected mass according to the calculated compensation factor.

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Номер записи: 1

12-01-2012 дата публикации

Methods and systems for controlling reductant levels in an scr catalyst

Номер: US20120006004A1

Автор: Chun Tai, Heath Morris, Timothy Booher

Принадлежит: Mack Trucks Inc

Methods and systems for controlling reductant levels in an SCR catalyst are provided. In one aspect, reductant levels are adjusted in response to a ratio of change of NOx conversion efficiency to a change of reductant level. In another aspect, reductant injection levels are periodically adjusted to see if NOx conversion efficiency is better or worse at the adjusted levels.

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Номер записи: 2

02-02-2012 дата публикации

System and method for processing nh3 slippage of a selective catalyst reduction system

Номер: US20120023907A1

Автор: Avra Brahma, Devesh Upadhyay

Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Systems and methods for storing NH 3 that has slipped through a first SCR are described. In one example, NH 3 is stored in a second SCR and released to the first SCR via desorption. The systems and method may reduce NH 3 consumption and increase NH 3 utilization within an exhaust system.

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Номер записи: 3

09-02-2012 дата публикации

Method and device for regenerating a particle filter

Номер: US20120031074A1

Автор: Andreas Kufferath, Dimitrios Stavrianos, Klaus Winkler, Michael Frank

Принадлежит: ROBERT BOSCH GMBH

A method and device for monitoring and controlling the regeneration of a particle filter in an exhaust gas duct of an internal combustion engine which has a three-way catalytic converter downstream of the particle filter, wherein the particle filter is regenerated by oxidative burning of the particles during a regeneration phase, wherein oxygen consumption is balanced, directly or indirectly, during the regeneration phase via the temporal variation of a first signal of a first lambda probe, which is arranged upstream of the particle filter, in comparison to the temporal variation of a second signal of a second lambda probe, which is arranged downstream of the particle filter. A lambda value of λ=1 is set downstream of the three-way catalytic converter during the regeneration of the particle filter by means of lambda control and the second lambda probe which is arranged downstream of the three-way catalytic converter.

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Номер записи: 4

16-02-2012 дата публикации

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

Номер: US20120039779A1

Автор: Rolf Bruck, Wolfgang Maus

Принадлежит: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

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

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Номер записи: 5

26-04-2012 дата публикации

Carbon dioxide coating method and device therefor

Номер: US20120097751A1

Автор: Akira Suzuki, Noriaki Hayasaka, Shin-Ichiro Kawasaki

Принадлежит: KAMI ELECTRONIC IND CO Ltd, National Institute of Advanced Industrial Science and Technology AIST

The present invention provides a low environmental burden type coating method using carbon dioxide and a coating device therefor that carry out carbon dioxide coating in which carbon dioxide is substituted for all or a portion of a diluent solvent (thinner) used in organic solvent-based spray coating, the coating method being configured to prevent deposition of a polymer of a paint component that has entered as a result of backflow by preliminarily adding, to carbon dioxide, a true solvent component of the paint in at least an amount required for saturated solubility (20% to 50% per weight of carbon dioxide) to lower the dissolving power of carbon dioxide with respect to the true solvent component. According to the present invention, it is possible to provide a coating method and a device therefor capable of considerably reducing VOC generation, and a coating method and a device therefor capable of performing stable carbon dioxide coating of a one-liquid curing type or two-liquid curing type paint.

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Номер записи: 6

24-05-2012 дата публикации

Mixing pipe for scr mufflers

Номер: US20120124968A1

Автор: Panos Tamamidis

Принадлежит: CNH Amercia LLC

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

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Номер записи: 7

24-05-2012 дата публикации

Method for diagnosing a fault of an scr system

Номер: US20120126989A1

Автор: Ignazio Dentici, Roberto Vernassa

Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

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Номер записи: 8

31-05-2012 дата публикации

Aerodynamic Aftertreatment

Номер: US20120133176A1

Автор: Charles E. Ramberg

Принадлежит: Ramberg Charles E

Aspects provide for an engine and an aftertreatment system coupled to the engine and configured to treat an exhaust stream from the engine. The engine may be incorporated into a mobile piece of equipment (e.g., a truck). A fairing may be shaped to improve air flow during motion by reducing air resistance created by the aftertreatment system.

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Номер записи: 9

14-06-2012 дата публикации

Turbo oven capable of stirring and turning food materials

Номер: US20120145140A1

Автор: Kuei-Tang Chang

Принадлежит: Tall and Stout Industrial Corp

A turbo oven includes a cover having an activating assembly and an oven body for containing food materials. The oven body includes a pot assembly, a stirring assembly and a stopping element. The pot assembly is configured to support the cover and contain the food materials. The stirring assembly is disposed in the pot assembly. The stirring assembly includes a shaft rod and a stirring blade connected to the shaft rod. The shaft rod is driven by the activating assembly for rotation. The rotation of the shaft rod drives the stirring blade to rotate in the pot assembly. The stopping element is connected to the inner wall of the pot assembly and protrudes from the inner wall of the pot assembly. By this structure, the food materials received in the pot assembly can be cooked thoroughly and uniformly.

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Номер записи: 10

05-07-2012 дата публикации

Exhaust gas purification apparatus for an internal combustion engine

Номер: US20120167557A1

Автор: Kazuhiro Itoh

Принадлежит: Toyota Motor Corp

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

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Номер записи: 11

26-07-2012 дата публикации

Apparatus, system, and method for vaporizing fuel mixture

Номер: US20120186557A1

Автор: Walter P. JENKINS

Принадлежит: Individual

An apparatus, system, and method are disclosed for vaporizing fuel. A method for vaporizing fuel includes providing a fuel vaporizer. The fuel vaporizer includes a chamber for receiving a liquid, the chamber comprising at least one inlet and at least one outlet. The fuel vaporizer also includes a driver module coupled with the chamber, and a oscillator disposed within the chamber and configured to be driven by the driver module. The method includes feeding water through an inlet of the at least one inlet into the chamber. The method includes driving the oscillator using the driver module at a predetermined frequency, wherein a mist is created from the liquid. The method also includes introducing the mist from the chamber via an outlet of the at least one outlet into an intake of an internal combustion engine.

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Номер записи: 12

09-08-2012 дата публикации

Exhaust system having thermally conductive dosing channel

Номер: US20120198823A1

Автор: Aaron K. Amstutz

Принадлежит: Caterpillar Inc

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

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Номер записи: 13

16-08-2012 дата публикации

System and method for controlling emissions in a combustion system

Номер: US20120207657A1

Автор: David Kelly Moyeda, David Michael Chapin, Peter Martin Maly, Robert Warren Taylor, Tian Xuan Zhang

Принадлежит: General Electric Co

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

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Номер записи: 14

23-08-2012 дата публикации

Multi-leg exhaust after-treatment system and method

Номер: US20120210697A1

Автор: Anita SINGHAL, Axel Zurloye, Ousmane GUEYE, Phanindra Garimella, Randy W. NELSON

Принадлежит: Cummins Intellectual Property Inc

This disclosure provides an exhaust flow detection and variable dosing system and method for treating exhaust flow from an engine. The system includes first and second exhaust flow legs, a cross passage connecting these legs upstream of SCRs and a sensor positioned along the cross passage to detect at least one of differential pressure between the exhaust flow legs, and exhaust flow in the cross passage. A dosing circuit connects a dosing treatment supply to each of the exhaust flow legs at or upstream of the SCRs, and at least one dosing device positioned along the dosing circuit to control the amount of the dosing agent delivered to each exhaust leg. An electronic control unit controls the amount of a dosing agent delivered to the exhaust flow legs independently based on exhaust flows determined for each leg using at least one of the differential pressure and cross passage exhaust flow.

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Номер записи: 15

23-08-2012 дата публикации

Decomposition conduit fabrication method

Номер: US20120211116A1

Автор: David S. Young

Принадлежит: Deere and Co

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

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Номер записи: 16

06-09-2012 дата публикации

Gas-liquid mixing nozzle, and emulsion fuel combustion system and environment purification liquid spray system that use the same

Номер: US20120222649A1

Автор: Yasushi Kudoh

Принадлежит: Lead Industry Co Ltd

Provided is a gas-liquid mixing nozzle ( 10 ) including an internal air discharge path (A), an external air discharge path (D), at least one liquid introduction path (B, C) which is disposed between the internal air discharge path (A) and the external air discharge path (D) and introduces a liquid having water and/or fuel as a main component into a nozzle discharge opening ( 18 ), and an impact member ( 22 ) with which a mixture of the air and the liquid mixed with each other in the outlets of the internal air discharge path (A) and the liquid introduction path (B, C) collides, the outlet of the internal air discharge path (A) and the outlet of the liquid introduction path (B, C) being disposed on the inside of a nozzle in relation to the nozzle discharge opening ( 18 ), and the impact member ( 22 ) being disposed between, the outlets of the internal air discharge path (A) and the liquid introduction path (B, C) and the nozzle discharge opening ( 18 ). With the above-described configuration, the gas and the liquid may be highly efficiently mixed with each other, and the generation of water droplets of a liquid may be suppressed, thereby producing finer particles.

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Номер записи: 17

15-11-2012 дата публикации

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

Номер: US20120285147A1

Автор: Jan Hodgson, Sven Schepers

Принадлежит: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

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

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Номер записи: 18

15-11-2012 дата публикации

Urea injector diagnostics using spectral analysis for scr nox reduction system

Номер: US20120286063A1

Автор: Stephen Paul Levijoki, Yue-Yun Wang

Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

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Номер записи: 19

13-12-2012 дата публикации

Exhaust Flow Distribution Device

Номер: US20120315195A1

Автор: Bruce Bernard Hoppenstedt, Jared D. Blaisdell, Josh J. Kundert

Принадлежит: Donaldson Co Inc

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

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Номер записи: 20

20-12-2012 дата публикации

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

Номер: US20120317963A1

Автор: Masanori Hatta

Принадлежит: Toyota Industries Corp

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

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Номер записи: 21

20-12-2012 дата публикации

Valve device for internal combustion engines

Номер: US20120318217A1

Автор: Berthold Herrmann, Holger Paffrath, Peter Burgfels

Принадлежит: PIERBURG GMBH

A valve device for an internal combustion engine includes a drive unit. A drive housing in which the drive unit is arranged. A valve unit is configured to be moved by the drive unit. The valve unit comprises a valve rod and a valve closure member. A flow housing comprises a fluid inlet channel and a fluid outlet channel. A connection cross section of the fluid inlet channel and the fluid outlet channel is configured to be controlled by the valve closure member. A pressure detection chamber is fluidically connected with the fluid inlet channel. A pressure sensor is arranged in the pressure detection chamber and is integrated in the drive housing. The pressure sensor comprises a pressure detection surface arranged in a plane. A normal of the pressure detection surface is arranged so as to be perpendicular to a direction of a fluid flow into the pressure detection chamber.

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Номер записи: 22

03-01-2013 дата публикации

Def pump and tank thawing system and method

Номер: US20130000729A1

Автор: Daniel R. Wentzel, Jack A. Merchant, Jinhui Sun, Mahesh K. Mokire, Raymond U. Isada, Yong Yi

Принадлежит: Caterpillar Inc

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

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Номер записи: 23

17-01-2013 дата публикации

Emission control system for a vehicle

Номер: US20130014492A1

Автор: Jeffrey S. Basista, Philip A. Yaccarino

Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

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Номер записи: 24

07-02-2013 дата публикации

Nh3 emissions management in a nox reduction system

Номер: US20130031891A1

Автор: Chetan PONNATHPUR

Принадлежит: Cummins Emission Solutions Inc

A system includes an internal combustion engine producing an exhaust gas, an aftertreatment system receiving the exhaust gas, the aftertreatment system including a particulate filter positioned upstream of an SCR catalyst component, and a urea injector operatively coupled to the aftertreatment system at a position upstream of the SCR catalyst component. The system further includes a controller that interprets an exhaust temperature value, an ambient temperature value, and a urea injection amount. The controller determines a urea deposit amount in response to the exhaust temperature value, the ambient temperature value, and the urea injection amount, and initiates a desoot regeneration event in response to the urea deposit amount. The desoot regeneration event includes operating the engine at a urea decomposition exhaust temperature.

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Номер записи: 25

07-02-2013 дата публикации

Purge phase control strategy for a selected catalytic reduction system

Номер: US20130032214A1

Автор: Eric Lee, Evangelos Goergiadis, Marie-Pierre Saby

Принадлежит: PEUGEOT CITROEN AUTOMOBILES SA

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

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Номер записи: 26

14-02-2013 дата публикации

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

Номер: US20130036724A1

Автор: Jan Hodgson, Peter Bauer

Принадлежит: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

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

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Номер записи: 27

28-02-2013 дата публикации

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

Номер: US20130048120A1

Автор: Rainer Haeberer

Принадлежит: ROBERT BOSCH GMBH

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

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Номер записи: 28

14-03-2013 дата публикации

Selective catalytic reduction sensor

Номер: US20130061665A1

Автор: Tomoyuki Itou

Принадлежит: Isuzu Motors Ltd

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

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Номер записи: 29

14-03-2013 дата публикации

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

Номер: US20130061948A1

Автор: Rainer Haeberer

Принадлежит: ROBERT BOSCH GMBH

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

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Номер записи: 30

14-03-2013 дата публикации

SELECTIVE CATALYTIC REDUCTION SYSTEM

Номер: US20130064716A1

Автор: Fukuoka Takeshi, Nishikawa Tomoo, Takahashi Hirotaka

Принадлежит:

A selective catalytic reduction (SCR) system that can detect whether or not a float is stuck even where a water level sensor that detects a liquid level in a stepwise manner is used, including: an urea injection quantity integrating unit that integrates an injected quantity of urea to calculate an urea injection quantity integrated value; an integrated value resetting unit that, if a detected value from detection means changes, resets the urea injection quantity integrated value; and an abnormality determination unit that, if the urea injection quantity integrated value exceeds a predetermined threshold value for determination, determines a level sensor as having an abnormality. 1. An SCR system including:a selective catalytic reduction device provided in an exhaust pipe for an engine;a urea tank that stores urea;a float-type urea level sensor provided in the urea tank, the float-type urea level sensor including a float following a liquid surface of the urea in the urea tank, and detection means for detecting a position of the float to detect a liquid level of the urea stored in the urea tank; and{'sub': 'x', 'a urea injection control unit that controls an injected quantity of urea according to a quantity of NOemitted from the engine,'}wherein the SCR system comprises:a urea injection quantity integrating unit that integrates the injected quantity of urea to calculate a urea injection quantity integrated value;an integrated value resetting unit that if a detected value from the detection means changes, resets the urea injection quantity integrated value; andan abnormality determination unit that if the urea injection quantity integrated value exceeds a predetermined threshold value for determination, determines the urea level sensor as having an abnormality.2. The SCR system according to claim 1 ,wherein the detection means in the urea level sensor is configured to detect the liquid level of the urea stored in the urea tank in a stepwise manner; andwherein the ...

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Номер записи: 31

14-03-2013 дата публикации

ENGINE EXHAUST PURIFICATION DEVICE

Номер: US20130064717A1

Автор: HIRATA Kiminobu, Kato Hideaki, KUSAKA Jin, MASAKI Nobuhiko, NOTAKE Yasumasa

Принадлежит:

An engine exhaust purification device comprises: a selective reduction type NOx catalyst; an oxidation catalyst disposed on an upstream side of the NOx catalyst; a reducing agent adding device which adds an NOx reducing agent to an exhaust gas of an engine; a control device which controls the reducing agent adding device; and an NOratio calculation device which estimates an NOratio of the exhaust gas flowing into the NOx catalyst. The NOratio of the exhaust gas flowing into the NOx catalyst is calculated by a catalytic reaction model where the oxidation reaction of NO in the oxidation catalyst is numerically formulated, and the NOratio is reflected to calculate an amount of ammonia adsorbed on the NOx catalyst by a catalytic reaction model where a chemical reaction concerned with the reduction of NOx in the NOx catalyst is numerically formulated. 1. An engine exhaust purification device which reduces NOx discharged from an engine by use of ammonia as a reducing agent to purify an exhaust gas , comprising:a selective reduction type NOx catalyst disposed in an exhaust passage of the engine;a reducing agent adding device which adds ammonia or a precursor thereof to the exhaust gas of the engine on an upstream side of the NOx catalyst; anda control device which calculates an amount of the ammonia to be supplied to the NOx catalyst, to control the reducing agent adding device in accordance with the calculated amount of the ammonia to be supplied, a first storage section in which there is stored a first catalytic reaction model where a chemical reaction concerned with the reduction of the NOx by use of the ammonia adsorbed on a catalyst layer of the NOx catalyst as an effective reducing agent is numerically formulated;', 'an ammonia adsorption amount calculating section which acquires the first catalytic reaction model from the first storage section, and calculates ammonia adsorption amounts of a plurality of cells by the acquired first catalytic reaction model, the ...

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Номер записи: 32

14-03-2013 дата публикации

Selective catalytic reduction system

Номер: US20130064718A1

Автор: Shinji Hara, Takao Onodera, Tomoyuki Kamijyou

Принадлежит: Isuzu Motors Ltd

An SCR system that can detect a NO x concentration accurately irrespective of an operation state of an engine is provided. The SCR system including: an SCR device 103 provided in an exhaust pipe 102 for an engine E; a dosing valve 104 that injects urea solution on an upstream side of the SCR device 103 ; a NO x sensor 110 provided in the exhaust pipe 102 ; and an urea solution injection control unit 127 that controls a urea solution injection quantity according to a NO x concentration value detected by the NO x sensor 110 includes a pressure estimation unit 131 that estimates a NO x sensor pressure that is a pressure inside the exhaust pipe 102 at a position where the NO x sensor 110 is provided, and a NO x concentration detection value correction unit 136 that corrects the NO x concentration value detected by the NO x sensor 110 , according to the NO x sensor pressure estimated by the pressure estimation unit 131.

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Номер записи: 33

14-03-2013 дата публикации

SELECTIVE CATALYTIC REDUCTION SYSTEM

Номер: US20130064719A1

Автор: Kataoka Hiroshi, Kawanaka Norio, Komine Mamoru, Wakamatsu Toshitsugu

Принадлежит:

A selective catalytic reduction (SCR) system that can suppress thermal damage in operation of a dosing valve resulting from crystallization of urea solution and corrosion of the dosing valve to perform proper urea solution injection control, and includes an SCR device provided in an exhaust pipe of an engine; a dosing valve that injects urea solution at an upstream side of the SCR device; a minimum injection quantity setting unit that if temperature of the dosing valve is equal to or higher than a predetermined temperature, sets a minimum injection quantity according to the temperature of the dosing valve; and an urea solution injection control unit that if injected quantity of urea solution according to quantity of NOemitted from the engine is smaller than the minimum injection quantity, controls the injected quantity of urea solution to be the minimum injection quantity. 1. An SCR system including:an SCR (selective catalytic reduction) device provided in an exhaust pipe for an engine;a dosing valve that injects urea solution on an upstream side of the SCR device; and{'sub': 'x', 'a urea solution injection control unit that controls an injected quantity of urea solution according to a quantity of NOemitted from the engine,'}wherein the SCR system comprises a minimum injection quantity setting unit that if a temperature of the dosing valve is equal to or higher than a predetermined temperature, sets a minimum injection quantity according to the temperature of the dosing valve; and{'sub': 'x', 'wherein the urea solution injection control unit is configured to, if the injected quantity of urea solution according to the quantity of NOemitted from the engine is smaller than the minimum injection quantity set by the minimum injection quantity setting unit, control the injected quantity of urea solution to be the minimum injection quantity.'}2. The SCR system according to claim 1 ,wherein the minimum injection quantity setting unit includes:a load state determination unit ...

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Номер записи: 34

28-03-2013 дата публикации

Urea heating system and heating method thereof

Номер: US20130074479A1

Автор: Buyeol Ryu, Dea Gil Hwang, Dong Myoung RYOO

Принадлежит: Hyundai Motor Co, Kia Motors Corp

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

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Номер записи: 35

28-03-2013 дата публикации

Mis-fill prevention system

Номер: US20130074936A1

Автор: Jack A. Merchant, Randy L. Marquis

Принадлежит: Caterpillar Inc

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

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Номер записи: 36

11-04-2013 дата публикации

Gas-Liquid Contactor

Номер: US20130089480A1

Автор: David John Parkinson, Kevin E. Collier, Theodore E. Dickinson

Принадлежит: Specialist Process Tech Ltd

A contactor for reacting a flow of gas with a liquid, comprises a vessel, a first chamber in the vessel and a second chamber in the vessel, the first and second chambers being linked only by a porous wall, and means for directing ultrasonic noise into at least one of the first and second chambers.

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Номер записи: 37

18-04-2013 дата публикации

Cold start no2 generation system

Номер: US20130091826A1

Автор: Chang H. Kim, Eugene V. Gonze, Michael J. Paratore, JR., Steven J. Schmieg

Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A cold start NO 2 generation system includes a catalyst control module that identifies a portion of a three-way catalyst that corresponds to a nitrogen dioxide zone. A diagnostic module determines a temperature in the nitrogen dioxide zone, and a fuel control module adjusts an air/fuel ratio based on the temperature in the nitrogen dioxide zone. A cold start NO 2 generation method includes identifying a portion of a three-way catalyst that corresponds to a nitrogen dioxide zone. The method further includes determining a temperature in the nitrogen dioxide zone and adjusting an air/fuel ratio based on the temperature in the nitrogen dioxide zone.

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Номер записи: 38

18-04-2013 дата публикации

METHOD AND DEVICE PERTAINING TO LIMITING THE TEMPERATURE OF A DOSING UNIT IN A SCR SYSTEM

Номер: US20130091829A1

Автор: Bremberg Per, Liljestrand Andreas

Принадлежит:

A method pertaining to an SCR system for cleaning of exhaust gases from an engine (). A dosing unit () is in thermal contact with the engine's exhaust system and supplies a reducing agent to an exhaust duct () of the exhaust system. Determining (s) whether there is an undesired temperature level of the dosing unit (). If yes, limit (s) the temperature of the exhaust duct () by controlling operation of the engine. Also, a computer programme product containing programme code (P) for implementing the method. Also a device and a motor vehicle () which is equipped with the device are disclosed. 1. A method pertaining to an SCR system for cleaning of exhaust gases from an engine , the engine generating an exhaust flow when operating , and ceasing generating an exhaust flow when operation halts;the system comprising a reducing agent dosing unit situated in thermal contact with an exhaust system of the engine for supplying a reducing agent to an exhaust duct of the exhaust system;the method comprising the steps of;determining whether there is an undesired temperature level of said dosing unit; andif said undesired temperature level is found, limiting the temperature of said exhaust duct by control of the operation of said engine.2. A method according to claim 1 , wherein said engine has an output shaft claim 1 , and said limitation of the temperature is achieved by reducing a maximum available torque of the output shaft of the engine.3. A method according to claim 1 , wherein said limitation of the temperature is achieved by influencing an EGR content of the engine.4. A method according to claim 1 , wherein said limitation of the temperature is achieved by influencing fuel injection times of at least one cylinder of the engine or by influencing ignition times of at least one cylinder of the engine.5. A method according to claim 1 , wherein said undesired temperature level is set based on characteristics of said reducing agent.6. A method according to claim 1 , wherein ...

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Номер записи: 39

25-04-2013 дата публикации

MODEL-BASED CONTROLS FOR SELECTIVE CATALYST REDUCTION SYSTEMS

Номер: US20130098462A1

Автор: Hoskin Robert Frank

Принадлежит: GENERAL ELECTRIC COMPANY

Systems and methods are provided for controlling a selective catalyst reduction (SCR) system having a SCR reactor. A reductant slip set point indicative of a target slip is received as a control variable is to be utilized for maintaining an amount of a NOcomposition included in a combustion gas below a selected limit. A signal transmitted by a sensor is received, and is indicative of the reductant slip downstream of the SCR reactor. An amount of a NOreductant to be introduced to the SCR reactor is determined based, at least in part, on a relationship between the target reductant slip and the reductant slip downstream of the SCR reactor indicated by the signal. A control signal is transmitted to cause introduction of the amount of the NOreductant to the SCR reactor to maintain the amount of the NOcomposition in the combustion gas below the selected limit. 1. A method of controlling a selective catalyst reduction (SCR) system having a SCR reactor , the method including:{'sub': 'x', 'receiving a reductant slip set point input as a control variable for maintaining an amount of a NOcomposition included in a flow of combustion gas below a selected limit, wherein the reductant slip set point is indicative of a target reductant slip that is desired downstream of the SCR reactor;'}receiving a signal transmitted by a sensor, the signal being indicative of a reductant slip downstream of the SCR reactor;{'sub': 'x', 'determining an amount of a NOreductant to be introduced to the SCR reactor based at least in part on a relationship between the target reductant slip and the reductant slip downstream of the SCR reactor indicated by the signal; and'}{'sub': 'x', 'transmitting a control signal to cause introduction of the amount of the NOreductant to the SCR reactor to maintain the amount of the NOx composition in the flow of combustion gas below the selected limit.'}2. The method of further including:determining that an excess slip condition exists, where the reductant slip ...

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Номер записи: 40

02-05-2013 дата публикации

System and method for reducing mono-nitrogen oxide emissions

Номер: US20130104526A1

Автор: Daniel George Norton, Edward Joseph Hall

Принадлежит: General Electric Co

A system for reducing emissions in an engine is provided. The system includes a primary fuel tank having a primary fuel. The system also includes a secondary fuel tank having a secondary fuel. The system further includes a separator in fluid communication with the secondary fuel tank or the primary fuel tank or both the secondary fuel tank and the primary fuel tank, the engine and a hydrocarbon-selective catalytic reduction subsystem. The subsystem separator separates a less volatile portion of the secondary fuel or the primary fuel from a more volatile portion, said less volatile portion of the secondary fuel or the primary fuel in the separator is routed to the hydrocarbon-selective catalytic reduction subsystem and said more volatile portion of the secondary fuel or the primary fuel in the separator is routed to the engine.

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Номер записи: 41

16-05-2013 дата публикации

METHOD AND DEVICE FOR CONTROLLING EFFECTIVE HEAT TRANSFER IN A SOLID GAS STORAGE SYSTEM

Номер: US20130118152A1

Автор: Johannessen Tue, Quaade Ulrich Joachim, Schmidt Henning, Zeuthen Jacob Hjerrild

Принадлежит: Amminex A/S

A method for controlling the effective heat transfer from a storage unit (). During gas release from storage material () in the storage unit the storage material is heated by a heater (). During re-saturation of the storage material () with gas the heater is off. Controlling of the effective heat transfer from the storage unit () is performed, during gas release, by ceasing convection of a convection gas and, during re-saturation, by performing or enabling convection of a convection gas to cool the storage unit (). 1. A method for controlling the effective heat transfer from a storage unit , wherein the storage unit contains a solid gas storage material , said method being carried out by using an apparatus comprising:a fluid gap between an outer encapsulation and the storage unit that provides an insulation layer when there is no active movement of the gaseous fluid in the fluid gap, or when there is no passive convection enabled;a fluid flow device creating forced convection of gaseous fluid being in contact with the surface of the storage unit to increase heat transfer from the storage unit, or a passive-convection control device enabling passive convection of gaseous fluid being in contact with the surface of the storage unit to increase heat transfer from the storage unit;an exit of the encapsulation where the gaseous fluid forced in convection by the fluid flow device, or the gaseous fluid with enabled passive convection, can exit;a heater to heat the storage material;wherein during gas release from the storage material, the storage material is heated by the heater, andduring re-saturation of the storage material with gas, the heater is off; andwherein the controlling of the effective heat transfer from the storage unit is performed,during gas release, by ceasing operation of the fluid flow device, or by regulating the convection created by the fluid flow device such that it is lower than that during re-saturation, or by disabling passive convection by means of ...

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Номер записи: 42

27-06-2013 дата публикации

LIMITING NOX EMISSIONS

Номер: US20130160432A1

Автор: Adelman Bradley Jay, Cattani Carlos Luis, Chen Jer Shen Jason, Cigler James R., Khadilkar Dileep, Mandarapu Silpa, Rodiguez Rogelio, Schipper Jeremy Grant, Seiberlich Matthew Joseph, Silva Joao P., Singh Nishant, Uchanski Michael

Принадлежит: International Engine Intellectual Property Company LLC

Apparatus for controlling an internal combustion engine limits emission of undesirable compounds of nitrogen and oxygen and provides increased transient power. 1. An exhaust aftertreatment system for a compression ignition engine to reduce the amount of NOx in exhaust created by the engine , the system comprising:an active hydrocarbon injector configured to inject hydrocarbon into an exhaust stream created by the compression ignition engine; anda three-way catalyst configured to reduce NOx by combination with the injected hydrocarbon.2. The exhaust aftertreatment system of claim 1 , wherein the active hydrocarbon injector is configured to inject the hydrocarbon into the exhaust stream at a cylinder of the compression ignition engine.3. The exhaust aftertreatment system of claim 2 , wherein the active hydrocarbon injector is configured to inject the amount of hydrocarbon at the cylinder during a post-injection portion of an injection cycle.4. The exhaust system of claim 1 , wherein the active hydrocarbon injector is configured to inject the amount of hydrocarbon into the exhaust stream at a doser configured upstream of the three-way catalyst converter.5. The exhaust system of claim 1 , wherein the active hydrocarbon injector is configured to inject the amount of hydrocarbon into the exhaust stream at a burner configured upstream of the three-way catalyst converter.6. The exhaust system of claim 1 , wherein the exhaust aftertreatment system further includes a controller configured to control the amount of hydrocarbon injected into the exhaust stream by the active hydrocarbon injector claim 1 , the controller being further configured to elevate the amount of hydrocarbon injected into the exhaust stream to accommodate for ageing deterioration of the three-way catalyst converter.7. A compression ignition engine system comprising:a compression ignition engine generating exhaust gas stream that includes NOx;an active hydrocarbon injector system configured to inject ...

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Номер записи: 43

01-08-2013 дата публикации

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

Номер: US20130192204A1

Автор: Jan Hodgson, Sven Schepers

Принадлежит: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

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

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Номер записи: 44

01-08-2013 дата публикации

REDUCING AGENT SUPPLY APPARATUS, METHOD FOR CONTROLLING THE SAME, AND EXHAUST GAS PURIFICATION APPARATUS

Номер: US20130192207A1

Автор: Chiba Kunihiro, Kikuchi Atsushi, Miyamoto Takeshi, Sawaki Toshiki, WATANABE Hiroyuki, Watanabe Masanori

Принадлежит: BOSCH CORPORATION

[Problem] To provide a reducing agent supply apparatus that can quickly melt urea aqueous solution solidified in a reducing agent injection valve to allow early start of the injection control of urea aqueous solution, a method for controlling the reducing agent supply apparatus, and an exhaust gas purification apparatus. 18-. (canceled)9. A reducing agent supply apparatus , comprising: a storage tank for storing liquid reducing agent; a pump for pumping the reducing agent; a reducing agent injection valve for injecting the reducing agent pumped by the pump in an exhaust pipe of an internal combustion engine; and a reducing agent passage connecting the pump to the reducing agent injection valve ,wherein, when the internal combustion engine stops, a purge process of collecting the reducing agent in the reducing agent passage into the storage tank is performed, andwherein, on part of the reducing agent passage, a siphon function portion is provided for, even when, at the start of the internal combustion engine, the reducing agent injection valve is in injection failure due to solidification of the reducing agent in the reducing agent injection valve, causing some of the reducing agent to reach the reducing agent injection valve after the start of the pump to cause the solidified reducing agent to melt.10. The reducing agent supply apparatus according to claim 9 , wherein the siphon function portion includes: a first area provided adjacent to the reducing agent injection valve claim 9 , in which a reducing agent passage is placed downwardly from the position in height of the reducing agent injection valve; and a second area provided adjacent to the first area claim 9 , in which a reducing agent passage is placed upwardly from the position in height of the deepest portion of the first area claim 9 , andwherein the siphon function portion is configured so that, when, at the start of the internal combustion engine, the reducing agent injection valve is closed and the pump ...

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Номер записи: 45

08-08-2013 дата публикации

Aftertreatment system for an engine

Номер: US20130199160A1

Автор: Atul Abhyankar, John Ringstad, Justin Kruer, Ken Hummel

Принадлежит: Cummins Emission Solutions Inc

A system includes an internal combustion engine. An aftertreatment system is coupled to the internal combustion engine to receive an exhaust gas stream. The aftertreatment system comprises one or modules. Each module includes one or more emission reducing devices to reduce undesirable constituents in the exhaust gas stream from the internal combustion engine.

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Номер записи: 46

15-08-2013 дата публикации

RECHARGE DEVICE AND METHOD FOR NH3 CARTRIDGE

Номер: US20130205757A1

Автор: Boyd George D., Mella Ramon A., Odom Donald Brent

Принадлежит: International Engine Intellectual Property Company LLC

A device and method relating to the storage and delivery of ammonia for use in an after-treatment device for NOreduction in an exhaust stream, is disclosed. The device includes a cartridge having an ammonia adsorbing and desorbing material contained therein, and a recharging device for use in recharging the material with ammonia after the ammonia is released to a pre-determined level. The method includes providing a sealable cartridge having an interior, providing a predetermined amount of an ammonia-containing material within the interior of the container, positioning a recharging device within the interior of the sealable cartridge, releasing ammonia gas from the ammonia-containing material into an after-treatment device for use in the exhaust system of a vehicle for the reduction of NO, introducing liquid ammonia into the recharging device, and recharging the ammonia-containing material for re-use in the exhaust system. 1. An assembly for storing and recharging ammonia for use in the treatment of NOin an exhaust stream , the assembly comprising:a cartridge having an interior space;a compacted ammonia adsorbing/desorbing material stored within the interior space of the cartridge; and, a recharging element positioned within the interior space of the cartridge and the ammonia adsorbing/desorbing material.2. The assembly of claim 1 , wherein the cartridge is a cylinder.4. The assembly of claim 1 , wherein the ammonia adsorbing/desorbing material comprises a metal-ammine salt.5. The assembly of claim 1 , wherein the ammonia adsorbing/desorbing material comprises a metal-ammine salt dispersed with a heat absorbing metal.6. The assembly of claim 4 , wherein the metal-ammine salt comprises strontium chloride.7. The assembly of claim 1 , wherein the ammonia adsorbing/desorbing material is rechargeable.8. The assembly of claim 1 , wherein the recharging element is centrally located within the interior space of the cartridge.9. The assembly of claim 1 , wherein the ...

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Номер записи: 47

15-08-2013 дата публикации

Exhaust gas sampling device

Номер: US20130209330A1

Автор: Kenji Hara, Masahiro Nakane, MONTAJIR Rahman, Shigeru Nakatani

Принадлежит: Horiba Ltd

An exhaust gas sampling device is intended to heat or cool a temperature of sampled exhaust gas flowing through a sampling line to a desired temperature in accordance with various exhaust gas conditions and usage conditions of the sampling line irrespective of a temperature of the exhaust gas flowing through an exhaust pipe, and includes the sampling line for sampling the exhaust gas to be introduced into an analyzing instrument; a plurality of heating parts provided along the sampling line from an upstream side to a downstream side for heating the exhaust gas flowing through the sampling line; and a temperature control part for individually setting set temperatures of the plurality of heating parts using the temperature of the exhaust gas in the exhaust pipe and a target temperature of the exhaust gas in an outlet side of the heating part located in the most downstream as parameters.

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Номер записи: 48

22-08-2013 дата публикации

Method for reducing the amount of nox in the exhaust gases of a motor vehicle

Номер: US20130213011A1

Автор: Arnaud Audouin

Принадлежит: AAQIUS and AAQIUS SA

The invention relates to a method for controlling a system for reducing the amount of NOx in the exhaust gases of a motor vehicle. The system comprises a storage chamber ( 8 ) which contains a pollutant-removing agent and which is arranged that the temperature thereof is controlled by a heating device ( 9 ). The system further comprises a supply module ( 6 ) arranged so as to inject the pollutant-removing agent into the exhaust gases, the supply module ( 6 ) comprising a device for measuring the pressure ( 6 a ) or the temperature inside the storage chamber ( 8 ), as well as a device ( 6 b ) for proportioning the pollutant-removing agent. The control method involves, for example: defining a predetermined moving criterion, in particular on the basis of the engine torque during a first period; filtering the moving criterion with a filtering period (T 1 ) corresponding to the first period; comparing the filtered moving criterion with various thresholds in order to determine a type of moving; determining the elapsed time for each type of moving during a second period (T 2 ) in order to associate a trend representing moving conditions throughout said second period; calculating a set pressure or set temperature according to the type and the trend representing past moving conditions; comparing the set pressure or set temperature with the pressure or temperature measured by the pressure- or temperature-measuring device ( 6 a ); and heating the storage chamber ( 8 ) if the pressure or temperature inside the latter is lower than the set pressure or set temperature.

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Номер записи: 49

22-08-2013 дата публикации

Motor Vehicle Exhaust Line

Номер: US20130216442A1

Автор: Jean-Paul Brunel, Yohann Perrot

Принадлежит: Faurecia Systemes dEchappement SAS

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

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Номер записи: 50

29-08-2013 дата публикации

VEHICLE RELOCATABLE EXHAUST SYSTEM COMPONENTS

Номер: US20130219865A1

Автор: Bogema John Paul, Oberski Christopher, Pollitt Dwayne, Van Nieuwstadt Michiel J., Zimmerman Bret Alan

Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

Modification of reductant (e.g., diesel exhaust fluid, DEF) tank location, for example during vehicle up-fitting may result in less than optimal operation of the DEF system due to inaccurate DEF system calibration. In one example approach, the above issue can be at least partially addressed by adjusting control system parameters for system control and diagnostics based on an input indicative of, or any modification to, the DEF tank location. In this way, DEF tank location flexibility is maintained, while also maintaining emission control and diagnostic accuracy. 1. A method of configuring a controller of a vehicle with an exhaust system including a reductant storage vessel , comprising:receiving vehicle exhaust system configuration information;adjusting exhaust system operating parameters based on the received exhaust system configuration information.2. The method of wherein the exhaust system further includes a selective catalytic reduction emission control device claim 1 , the method further comprising delivering reductant from the reductant storage vessel to the selective catalytic reduction emission control device claim 1 , where the adjusting includes adjusting the delivery of the reductant based on the adjusted exhaust system operating parameters.3. The method of wherein the exhaust system further includes a selective catalytic reduction emission control device claim 1 , the method further comprising delivering reductant from the reductant storage vessel to the selective catalytic reduction emission control device claim 1 , where the adjusting includes adjusting diagnosing of the exhaust system based on the adjusted exhaust system operating parameters.4. The method of claim 1 , wherein the vehicle exhaust system configuration information is received by the controller from a source external to the vehicle.5. The method of wherein the vehicle exhaust system configuration information includes a code corresponding to a vehicle wheelbase.6. The method of wherein ...

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Номер записи: 51

12-09-2013 дата публикации

METHOD FOR OPERATING A METERING APPARATUS, METERING APPARATUS AND MOTOR VEHICLE HAVING A METERING APPARATUS

Номер: US20130232954A1

Автор: BAUER PETER, BRUECK ROLF, HODGSON JAN, SCHEPERS SVEN

Принадлежит: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

A method for operating a metering apparatus for reducing agent includes providing the metering apparatus with at least one movable pump element movable between upper and lower reversal points to convey reducing agent into an exhaust-gas treatment component, and at least one position transmitter for determining a pass of the movable pump element. In the method, a first detection of a position of the movable pump element is provided by the position encoder. Subsequently, the movable pump element is moved and reducing agent is metered into the exhaust-gas treatment component. Thereupon, a second detection of a position of the movable pump element is provided by the position encoder, and subsequently a first quantity of reducing agent which is metered between the first and second detections is determined. A metering apparatus and a motor vehicle having a metering apparatus are also provided. 1. A method for operating a metering apparatus for reducing agent , the method comprising:providing a metering apparatus having at least one movable pump element movable between an upper reversal point and a lower reversal point to deliver reducing agent into an exhaust gas treatment component, and at least one position transmitter configured to detect a pass by the movable pump element;a) carrying out a first detection of a position of the at least one movable pump element with the at least one position transmitter;b) moving the at least one movable pump element;c) metering reducing agent into the exhaust gas treatment component;d) carrying out a second detection of a position of the movable pump element with the at least one position transmitter; ande) determining a first quantity of reducing agent metered between step a) and step d).2. The method according to claim 1 , which further comprises:providing the metering apparatus with at least one injector configured to feed reducing agent into the exhaust gas treatment component; andcarrying out at least the following steps during ...

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Номер записи: 52

12-09-2013 дата публикации

Engine Exhaust Systems with Secondary Air Injection Systems

Номер: US20130232955A1

Автор: Eric Hudak, Eric Pekrul

Принадлежит: Kohler Co

A variety of embodiments of exhaust systems for engines including small off-road engines, and related methods of operation, are disclosed. In at least some embodiments, the exhaust system includes a first conduit that receives exhaust emissions from a first engine cylinder, and a second conduit that communicates air to a first port on the first conduit. The air mixes with the exhaust emissions within the first conduit so as to produce a chemical reaction, and a level of at least one undesirable component of the exhaust emissions is reduced. Further, the exhaust system does not include any catalytic converter. In some embodiments, the exhaust system further comprises a crankcase ventilation system.

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Номер записи: 53

12-09-2013 дата публикации

EXHAUST POST-TREATMENT DEVICE AND METHOD FOR A VEHICLE, WITH A REDUCTANT VAPORISING SURFACE BEING WARMED BY A PELTIER ELEMENT

Номер: US20130232956A1

Автор: Hall Ola, Loman Peter, Ryrfeldt Daniel

Принадлежит:

An exhaust post-treatment device () for a vehicle () for reducing nitrogen oxides present in the exhaust gases () of the vehicle () by supply of liquid reducing agent () to the exhaust gases () in an exhaust pipe (). The device () locally warms a surface () within the exhaust pipe () by a Peltier element () by using thermal energy from the exhaust gases () to vaporize liquid reducing agent () which reaches the surface (), thereby avoiding the formation of deposits of reducing agent within the exhaust pipe (). Also a method for post-treatment of exhaust gases from vehicles with an exhaust post-treatment device () including a Peltier element (). 124204182032231326201831. An exhaust post-treatment device () for a vehicle () adapted to reducing nitrogen oxides present in the exhaust gases () of the vehicle () by supply of liquid reducing agent () to the exhaust gases () in an exhaust pipe () , characterised in that the device () comprises a Peltier element and is adapted to locally warming a surface () within the exhaust pipe () by means of the Peltier element () by using thermal energy from the exhaust gases () to vaporise liquid reducing agent () which reaches the surface () , and thereby avoid formation of deposits of reducing agent within the exhaust pipe.2228620628306313263132. An exhaust post-treatment device () according to claim 1 , characterised in that one side () of the Peltier element () is adapted to diverting thermal energy from the exhaust gases () to the Peltier element () by thermal energy being absorbed on one side () of the Peltier element and by the other side () of the Peltier element () being adapted to locally warming a surface () within the exhaust pipe () by thermal energy being delivered from the Peltier element () to the surface () within the exhaust pipe ().3268108108102863061214286306. An exhaust post-treatment device () according to claim 2 , characterised in that the Peltier element () comprises at least two electrodes ( claim 2 , ) made ...

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Номер записи: 54

12-09-2013 дата публикации

LIQUID RESERVOIR, IN PARTICULAR FOR AN AQUEOUS UREA SOLUTION

Номер: US20130233850A1

Автор: Treudt Volker

Принадлежит: KAUTEX TEXTRON GMBH & CO. KG

The invention relates to a liquid reservoir (), in particular for an aqueous urea solution, comprising a buffer storage means () arranged on the bottom of the liquid reservoir () in the installation position, a liquid delivery unit (), at least one, preferably a plurality of first filter elements () arranged on the bottom in the installation position outside the buffer storage means (), each of which first filter elements is connected to the liquid delivery unit () via a liquid line (), the first filter elements () being constructed such that the filter fabric of the first filter elements () is permeable to the liquid located in the liquid reservoir () and impermeable to air, a second filter element () being arranged between the interior of the buffer storage means () and the liquid delivery unit (), which second filter element is constructed such that the filter fabric of the second filter element () is permeable to the liquid located in the liquid reservoir () and impermeable to air, the breakthrough pressure of the second filter element (), at which air is delivered through the filter element, being greater than the breakthrough pressure of the first filter elements (), furthermore comprising a first valve () between the liquid delivery unit () and the first filter elements (), the opening pressure of the first valve () being smaller than the breakthrough pressure of the second filter element (). 1. Liquid reservoir , in particular for an aqueous urea solution , comprising:a buffer storage means arranged on the bottom of the liquid reservoir in the installation position,a liquid delivery unit,at least one, preferably a plurality of, first filter elements arranged on the bottom in the installation position outside the buffer storage means, each of which first filter elements is connected to the liquid delivery unit via a liquid line,the first filter elements being constructed such that the filter fabric of the first filter elements is permeable to the liquid ...

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Номер записи: 55

19-09-2013 дата публикации

Reducing Agent Dosting System for Injection Reducing Agent into the Exhaust Gas Flow of an Internal Combustion Engine

Номер: US20130240067A1

Автор: Kassel Armin, Overhoff Werner

Принадлежит: ALBONAIR GmbH

The invention relates to a reducing agent dosing system for injecting a reducing agent into the exhaust-gas flow of an internal combustion engine for selective catalytic reduction, wherein the dosing system can be or is connected to a reducing agent tank () from which reducing agent is extracted and delivered by means of a reducing agent pump (), wherein there is a compressed air supply () and at least one nozzle () is provided which is connected to the pressure line () of the reducing agent pump () and via which the reducing agent is introduced into the exhaust-gas flow and atomized by means of compressed air, wherein the pressure line () of the reducing agent pump () issues via an inlet () into a valve () which, when it is subjected to pressure by reducing agent delivered by the reducing agent pump (), opens up the inlet () to the valve () and an overflow duct to an outlet () of the valve to a dosing line () to the nozzle (). 11234112112652657124. A reducing agent dosing system for injecting a reducing agent into the exhaust-gas flow of an internal combustion engine for selective catalytic reduction , in which the dosing system is connected to a reducing agent tank () from which reducing agent is extracted and delivered by further including a reducing agent pump () , operatively connected to a compressed air supply () and at least one nozzle () connected to a pressure line () of the reducing agent pump () wherein the reducing agent is introduced into the exhaust-gas flow and is atomized by means of compressed air , characterized in that the pressure line () of the reducing agent pump () empties via an inlet () into a valve () which , when it is pressurized by reducing agent delivered by the reducing agent pump () , opens up the inlet () to the valve () and an overflow duct to an outlet () of the valve to a dosing line () to the nozzle ().26752. The dosing system according to claim 1 , wherein the inlet () and the outlet () of the valve () automatically close when ...

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Номер записи: 56

26-09-2013 дата публикации

EXHAUST AFTERTREATMENT SYSTEM FOR INTERNAL COMBUSTION ENGINE

Номер: US20130247545A1

Автор: Solbrig Charles E., Yanakiev Ognyan N.

Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A mixing plenum for exhaust gas comprises a canister with an inlet and an outlet. A bulkhead is located downstream from the inlet to define an exhaust gas consolidation chamber. An opening in the bulkhead allows exhaust gas to enter a u-shape conduit configured to direct the exhaust gas from a downstream direction to an upstream direction before releasing the exhaust gas back into the plenum downstream of the bulkhead. An injector is configured to inject fluid into the exhaust gas entering the conduit. A conduit exit located a distance “E” from the downstream side of the bulkhead allows the exhaust gas/fluid mixture to exit the conduit into a larger exit volume of the compact mixing can, in the manner of an expansion chamber, where its velocity slows and further mixing of the fluid/exhaust gas occurs and exits the compact mixing can through the outlet flange. 1. An exhaust gas treatment system having a compact mixing plenum configured to receive an exhaust gas/fluid mixture comprising:a canister having an upstream inlet;a bulkhead disposed within said canister at a distance downstream of said upstream inlet to thereby define an exhaust gas consolidation chamber therebetween;an exhaust gas opening, disposed in said bulkhead, through which exhaust gas passing through said exhaust gas consolidation chamber enters a high pressure, high velocity mixing conduit, said mixing conduit comprising:a substantially U-shaped conduit configured to direct the fluid/exhaust gas mixture from a downstream to an upstream direction within the compact mixing plenum for through mixing of said fluid/exhaust gas mixture; anda high pressure, high velocity mixing conduit exit located adjacent a downstream side of the bulkhead, anda low pressure, low velocity exit volume defined by said rigid canister downstream of said bulkhead and configured to receive the fluid/exhaust gas mixture from said high pressure, high velocity mixing conduit exit for further mixing of said fluid/exhaust gas mixture ...

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Номер записи: 57

03-10-2013 дата публикации

METHOD FOR OPERATING AN EXHAUST-GAS TREATMENT DEVICE AND MOTOR VEHICLE HAVING THE DEVICE

Номер: US20130255235A1

Автор: BRUECK ROLF, HODGSON JAN, KONIECZNY JOERG-ROMAN

Принадлежит: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

A method for operating an exhaust gas treatment device having at least one heater and at least one supply device for a reducing agent includes initially carrying out a test in order to determine if the reducing agent is to be supplied, and subsequently implementing different heating strategies in each case. In the event that the reducing agent is to be supplied, the exhaust gas treatment device is heated with the heater until a first threshold temperature is reached, if a first temperature lies below the first threshold temperature. In the case when no reducing agent is to be fed, the exhaust gas treatment device is heated with the heater until a second threshold temperature is reached, if a second temperature lies below the second threshold temperature. A motor vehicle having the device is also provided. 1. A method for operating an exhaust-gas treatment device having at least one heater and at least one supply device for a reducing agent , the method comprising the following steps:a) checking if reducing agent should be supplied;b.1) heating with the heater until a first threshold temperature is reached, if a determined first temperature lies below the first threshold temperature and if, according to step a), reducing agent should be supplied;b.2) heating with the heater until a second threshold temperature is reached, if a determined second temperature lies below the second threshold temperature and if, according to step a), no reducing agent should be supplied; andc) supplying reducing agent if, according to step a), reducing agent should be supplied.2. The method according to claim 1 , which further comprises selecting the first threshold temperature to permit at least a hydrolysis in a hydrolysis catalytic converter claim 1 , a thermolysis or an evaporation of liquid reducing agent to take place if the first temperature lies above the first threshold temperature.3. The method according to claim 1 , which further comprises selecting the second threshold ...

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Номер записи: 58

03-10-2013 дата публикации

Exhaust purification system of internal combustion engine

Номер: US20130259752A1

Автор: Kazuhiro Umemoto, Kohei Yoshida, Mikio Inoue

Принадлежит: Toyota Motor Corp

In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve ( 15 ) and an exhaust purification catalyst ( 13 ) are arranged. The exhaust purification catalyst ( 13 ) is comprised of an upstream-side catalyst ( 14 a ) and a downstream-side catalyst ( 14 b ) arranged in series at an interval from each other. The upstream-side catalyst ( 14 b ) has a smaller cross-sectional area than the downstream-side catalyst ( 14 b ). The concentration of hydrocarbons which flow into the upstream-side catalyst ( 14 a ) is made to vibrate by within a predetermined range of amplitude of a 200 ppm or more and within a predetermined range of period of 5 seconds or less, whereby the NO x which is contained in exhaust gas is reduced at the exhaust purification catalyst ( 13 ).

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Номер записи: 59

03-10-2013 дата публикации

Exhaust gas purification system

Номер: US20130259755A1

Автор: Gyu Baek Cho, Hong Suk Kim, Jun Ho Lee, Se-Jong Woo, Seok Hwan Lee, Yong Gyu Lee

Принадлежит: Korea Institute of Machinery and Materials KIMM

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

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Номер записи: 60

17-10-2013 дата публикации

EXHAUST PURIFICATION SYSTEM AND METHOD FOR CONTROLLING EXHAUST PURIFICATION SYSTEM

Номер: US20130269321A1

Автор: Kurogi Fumiyasu, Miyamoto Takeshi, Watanabe Masanori

Принадлежит: BOSCH CORPORATION

Provided is an exhaust purification system capable of clearing a blockage of a reducing agent injection valve caused by solidification of an aqueous urea solution soon after starting an engine and preventing degradation in exhaust purification efficiency when starting an internal combustion engine. An exhaust purification system with a DPF, a reducing agent injection valve, and an SCR catalyst in order from the exhaust upstream side includes: an operation state detecting unit capable of detecting starting and stopping of the internal combustion engine; a forced regeneration control unit which performs forced regeneration of the DPF; a condition establishment determining unit which determines whether there is a possibility of solidification of the aqueous urea solution when the operation state detecting unit detects that the internal combustion engine is stopped; a data storage unit which stores the determination result of the condition establishment determining unit as data; and a blockage-clearing control unit which controls a temperature raising unit for raising the temperature of the reducing agent injection valve so as to raise the temperature of the reducing agent injection valve based on the data when starting the internal combustion engine. 1. An exhaust purification system with a DPF which collects exhaust particulates in an exhaust gas , a reducing agent injection valve which injects an aqueous urea solution as a reducing agent into the exhaust gas , and an SCR catalyst which purifies a NOx in the exhaust gas by using the aqueous urea solution , the DPF , the injection valve and the catalyst being provided in order from the exhaust upstream side , the exhaust purification system comprising:an operation state detecting unit capable of detecting starting and stopping of an internal combustion engine;a condition establishment determining unit which determines whether there is a possibility of solidification of the aqueous urea solution when the operation state ...

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Номер записи: 61

24-10-2013 дата публикации

METHOD FOR DIAGNOSING A METERING VALVE AND DEVICE FOR CARRYING OUT THE METHOD

Номер: US20130276429A1

Автор: Barcin Buelent, Pfister Tobias, Walz Christian

Принадлежит: ROBERT BOSCH GMBH

A method for diagnosing a metering valve for metering a reagent into the exhaust gas region of an internal combustion engine. The metering valve is actuated by a pulse-width-modulated metering valve actuation signal with a certain duty factor for setting the metering rate. A reagent pump places the reagent at a reagent pressure, and the reagent pump is operated with a pulse-width-modulated pump actuation signal with a certain duty factor. Diagnosis of the metering valve is carried out on the basis of an evaluation of the increase in the metering valve actuation signal pulse duty factor after a predefined increase in the metering rate. The reagent filling level of an SCR catalytic converter arranged in the exhaust gas region is taken into account. At the start of the diagnosis, the reagent storage capacity of the SCR catalytic converter is checked. 1. A method for diagnosing a metering valve which is set to a specific metering rate for metering a reagent to be metered into the exhaust gas region of an internal combustion engine , which metering valve is actuated by a pulse-width-modulated metering valve actuation signal with a certain metering valve actuation signal pulse duty factor for setting the metering rate , in which a reagent pump places the reagent at a reagent pressure , and in which the reagent pump is operated with a pulse-width-modulated pump actuation signal with a certain pump actuation signal pulse duty factor , wherein the diagnosis of the metering valve is carried out on the basis of an evaluation of the increase in the metering valve actuation signal pulse duty factor after a predefined increase in the metering rate , wherein the reagent filling level of an SCR catalytic converter arranged in the exhaust gas region is taken into account , in that , before an increase in the metering rate at the start of the diagnosis , a check is provided as to whether the SCR catalytic converter has a reagent storage capacity which is sufficient for the diagnosis ...

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Номер записи: 62

24-10-2013 дата публикации

Exhaust Gas System

Номер: US20130276435A1

Автор: Krenn Christian

Принадлежит:

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

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Номер записи: 63

24-10-2013 дата публикации

Tubing for a Liquid Medium that is to be Conditioned

Номер: US20130276436A1

Автор: Hersel Walter, Jensen Hans

Принадлежит:

Tubing for a liquid medium that is to be conditioned, in particular for a carbamide solution that is to be conditioned, wherein an inner tube is provided for the liquid medium that is to be conditioned, or for a liquid conditioning medium. The inner tube is encompassed by an outer tube, and runs parallel, or substantially parallel to the outer tube. At least one duct for the liquid conditioning medium, or for the liquid medium that is to be conditioned, is disposed between the inner tube and the outer tube. The inner tube and the outer tube consist of thermoplastic plastics, and the unit, consisting of the inner tube and the outer tube, is produced by means of co-extrusion. 1. A tubing for a liquid medium that is to be conditioned , wherein an inner tube is provided for the liquid medium that is to be conditioned or for a liquid conditioning medium , wherein the inner tube is encompassed by an outer tube , and runs substantially parallel , to the outer tube , wherein at least one duct is disposed between the inner tube and the outer tube for the liquid conditioning medium or for the liquid medium that is to be conditioned , wherein the inner tube and the outer tube consist , or substantially consist , of thermoplastic plastics , and wherein the unit , consisting of the inner tube and the outer tube is produced by means of co-extrusion.2. The tubing according to claim 1 , wherein the liquid medium to be conditioned is received claim 1 , or flows claim 1 , respectively claim 1 , in the inner tube claim 1 , and wherein the liquid conditioning medium is received claim 1 , or flows claim 1 , respectively claim 1 , in the at least one duct between the inner tube and the outer tube.3. The tubing according to claim 1 , wherein the inner wall of the outer tube is connected by means of numerous co-extruded bridges to the outer wall of the inner tube claim 1 , and wherein the co-extruded bridges extend in the longitudinal direction of the tubing.4. The tubing according to ...

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Номер записи: 64

24-10-2013 дата публикации

Aqueous Urea Tank Structure for Construction Machine

Номер: US20130276922A1

Автор: Azuma Hiroyuki, Kobayashi Takahiro, Nakamura Tsuyoshi, Sato Kensuke

Принадлежит: HITACHI CONSTRUCTION MACHINERY CO., LTD.

An aqueous urea tank structure is provided for a construction machine, in which a temperature rise of the aqueous urea within the tank can be suppressed and the load applied to the tank due to vibration of a vehicle body can be reduced. The aqueous urea tank structure including an aqueous urea tank which is disposed within a revolving upperstructure of a hydraulic excavator to store aqueous urea that purifies the exhaust gas discharged from an engine, wherein the aqueous urea tank structure further includes a securing member which encloses the periphery of the aqueous urea tank to secure the aqueous urea tank within the revolving upperstructure, and heat insulating materials which are interposed between the securing member and the aqueous urea tank to hold the aqueous urea tank. The securing member contains a box. 1. An aqueous urea tank structure for a construction machine , the aqueous urea tank structure being provided in the construction machine which has a revolving upperstructure , an engine disposed within the revolving upperstructure , and a hydraulic pump driven by drive force of the engine , the aqueous urea tank structure comprising:an aqueous urea tank which is disposed within the revolving upperstructure to store aqueous urea that purifies exhaust gas discharged from the engine;a securing member which encloses the periphery of the aqueous urea tank to secure the aqueous urea tank within the revolving upperstructure;heat insulating materials which are interposed between the securing member and the aqueous urea tank to hold the aqueous urea tank; anda mounting portion, to which a bolt for fixing the securing member within the revolving upperstructure is attached, in a lower portion of the securing member.2. An aqueous urea tank structure for a construction machine according to claim 1 , wherein:the securing member contains a box.3. An aqueous urea tank structure for a construction machine according to claim 1 , wherein:the securing member contains a frame ...

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Номер записи: 65

31-10-2013 дата публикации

Open air vehicle cooling device and method

Номер: US20130285265A1

Автор: Ari Petersen

Принадлежит: GOLF CART MISTERS Inc

A vehicle misting device and method that is operable is dry and humid environments are provided. The device may also include a payment system and fan.

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Номер записи: 66

14-11-2013 дата публикации

Service test for exhaust gas treatment system

Номер: US20130298655A1

Автор: Janean E. Kowalkowski, John Coppola

Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

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Номер записи: 67

28-11-2013 дата публикации

Exhaust air injection

Номер: US20130312407A1

Автор: Giovanni Cavataio, Gopichandra Surnilla

Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

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.

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Номер записи: 68

05-12-2013 дата публикации

DEVICE FOR SUPPLYING A REDUCING AGENT TO AN EXHAUST-GAS AFTERTREATMENT SYSTEM

Номер: US20130318950A1

Автор: Gottwald Frank

Принадлежит: ROBERT BOSCH GMBH

The invention relates to a device () for supplying to an exhaust-gas aftertreatment system a reducing agent (), in particular a urea-water solution for the reduction of nitrogen oxides in the exhaust-gas flow of a diesel engine, having a tank () for the reducing agent () and having a delivery module () for delivering the reducing agent () out of the tank () via an in particular electrically heatable suction line (). According to the invention, a) the suction line () which runs outside the tank () is connected to a pump sump () situated in the region of the tank base (), b) an in particular electrically operated pump sump heater () is arranged in the region of the pump sump (), c) at least one in particular electrically operated heating rod () extends into the tank (), and d) at least one fill level sensor () runs outside the tank (). The pump sump heater (), the heated suction line (), the heating rod () and an optional elastic compensating element () in the region of the pump sump () permit a substantially temperature-independent supply of the reducing agent () to an exhaust-gas aftertreatment system of a diesel engine. The pump sump () which is mounted on the bottom of the tank () furthermore makes it possible for the reducing agent (), which must be available in the exact dose for correct execution of the SCR method, to be supplied virtually completely independent of position, and nevertheless uniformly, to the exhaust-gas aftertreatment system. 11042404214424016. A device () for supplying a reducing agent () to an exhaust-gas aftertreatment system , having a tank () for the reducing agent () and having a delivery module () for conveying the reducing agent () out of the tank () via a suctioning line () , characterized in that{'b': 16', '40', '12', '44, 'a) the suctioning line (), which runs outside the tank (), is connected to a pump sump () situated in the region of a tank base (),'}{'b': 30', '12, 'b) a pump sump heater () is arranged in a region of the pump ...

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Номер записи: 69

05-12-2013 дата публикации

CONVEYING UNIT FOR CONVEYING REDUCING AGENT

Номер: US20130319550A1

Автор: BADOUAL LOIC, MAGUIN GEORGES

Принадлежит: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

A conveying unit for conveying reducing agent from a tank to an exhaust gas treatment device for cleaning the exhaust gases from an internal combustion engine, includes a flange defined at least by a first side and a second side. The first side and the second side are disposed so as to be mutually opposed, at least in part. At least a filter, a biased ice pressure compensator and/or a flexible ice pressure compensator are disposed on the first side. At least a pump, a pressure sensor and/or a temperature sensor are disposed on the second side. 1. A conveying unit for conveying reducing agent from a tank to an exhaust gas treatment device for cleaning exhaust gases from an internal combustion engine , the conveying unit comprising:a flange defined at least by first and second at least partly mutually oppositely disposed sides; a filter,', 'a biased ice pressure compensator, and', 'a flexible ice pressure compensator device; and, 'at least one component disposed on said first side and selected from the group consisting of a pump,', 'a pressure sensor, and', 'a temperature sensor., 'at least one component disposed on said second side and selected from the group consisting of2. The conveying unit according to claim 1 , wherein said filter has a removable filter cartridge including at least one of:at least one snap closure configured to lock said filter cartridge to the conveying unit,at least one opening configured to empty said filter cartridge without removing said filter cartridge from the conveying unit and configured to be closed by a closure, orsaid flexible ice pressure compensator.3. The conveying unit according to claim 1 , which further comprises:a conveyance path extending through said filter;at least one bypass duct configured to bypass said filter; andan air-permeable diaphragm configured to close said at least one bypass duct.4. The conveying unit according to claim 1 , wherein said biased ice pressure compensator contains a movable element claim 1 , a ...

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Номер записи: 70

12-12-2013 дата публикации

Device for Storing and Supplying Ammonia and Exhaust Line Equipped With Such a Device

Номер: US20130327027A1

Автор: Bartolo Xavier, Gafforelli David

Принадлежит:

A device for storing and supplying ammonia to an exhaust line of an automobile vehicle, includes a solid material provided for absorbing the ammonia, a reservoir for storing the solid material, and a heating unit to heat the solid material to desorb the ammonia. The solid material comprises solid elements with a mass of less than 50 grams. The heating unit is insulated from the reservoir. The device also includes a first assembly for transferring solid elements from the reservoir to the heating unit. 1. A device for storing and supplying ammonia for an exhaust line of an automobile vehicle , the device comprising:a solid material provided for absorbing ammonia, the solid material comprising solid elements with a mass of less than 50 grams;a reservoir for storing the solid material;a heating unit to heat the solid material to desorb the ammonia, the heating unit being insulated from the reservoir;a first assembly to transfer the solid elements from the reservoir to the heating unit;a supply conduit fluidically connecting the heating unit to an exhaust line; a probe that measures a pressure in the conduit; and a computer programmed to order a discharge of depleted solid element(s) from the heating unit to as far as a storage area and the transfer of one or several other solid elements from the reservoir to as far as the heating unit depending on the pressure of ammonia in the supply conduit.2. The device according to claim 1 , wherein the heating unit is laid out for heating a mass of solid elements of less than 30 grams.3. The device according to claim 1 , including a buffer reservoir fluidically connected to the supply conduit.4. The device according to claim 1 , wherein the heating unit comprises an enclosure that receives one or several solid elements claim 1 , and a heating member for heating by conduction.5. The device according to claim 4 , wherein the heating unit comprises a metal member positioned in the enclosure and in the contact of which the one or more ...

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Номер записи: 71

19-12-2013 дата публикации

SECONDARY AIR INJECTION SYSTEM

Номер: US20130333360A1

Автор: Choi Jae Hyeok, HAN Dong Hee, Han Seung Kook, Im Hyuk, Jeun Jaeyoung, Park Cheolho, Park Jong II

Принадлежит: HYUNDAI MOTOR COMPANY

A secondary air injection system supplying some of air introduced into an intake manifold to an exhaust manifold may include: an electric supercharger compressing air introduced through an air duct; throttle valves installed at an upstream of the intake manifold and controlling the amount of air introduced into the intake manifold by controlling the amount of air passing through the electric supercharger; secondary air valves installed on branching paths branched from intake, lines that link the electric supercharger and the throttle vales and controlling the amount of air for secondary air injection; and an injector that post-combusts exhaust gas discharged from an engine by injecting secondary air passing through the secondary air valve to a runner of the manifold. 1. A secondary air injection system partially supplying air introduced into an intake manifold to an exhaust manifold , comprising:an electric supercharger compressing air introduced through an air duct;a throttle valve installed upstream of the intake manifold and controlling the amount of air introduced into the intake manifold by controlling the amount of air passing through the electric supercharger;a secondary air valve installed on branching paths branched from intake lines that link the electric supercharger and the throttle vale and controlling the amount of air for secondary air injection; andan injector that post-combusts exhaust gas discharged from an engine by injecting secondary air passing through the secondary air valve to a runner of the manifold.2. The secondary air injection system of claim 1 , further comprising:a turbo charger installed on the intake line, and including a compressor compressing air passing through the electric supercharger and a turbine actuated by exhaust gas passing through the exhaust manifold to drive the compressor.3. The secondary air injection system of claim 2 , further comprising:an air cleaner box installed upstream of the electric supercharger and ...

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Номер записи: 72

19-12-2013 дата публикации

REDUCTANT DECOMPOSITION AND MIXING SYSTEM

Номер: US20130333363A1

Автор: Brault Joseph M., Joshi Vinay K., Kadam Dipesh M., Nande Abhijeet, Palacios Jose, Splinter Timothy V., Szailer Tamas

Принадлежит:

A selective catalytic reduction (SCR) system includes a mixer that has a plurality of blades spaced about a central tube. The mixer can be configured to receive a reductant and exhaust gas mixture. The SCR system also includes a closed-end tube that is downstream of the mixer and configured to receive the reductant and exhaust gas mixture from the mixer. The closed-end tube includes a closed end opposing an open end. The closed end is substantially perpendicular to an exhaust flow direction. The closed-end tube further includes a sidewall that extends between the open and closed end. The sidewall can include a plurality of perforations. The flange plate of the SCR system includes an annular disk that has a plurality of openings through which reductant and exhaust gas mixture received from the closed-end tube is flowable. The flange plate is coupled to and supports in place the closed-end tube. 1. A selective catalytic reduction (SCR) system , comprising:a mixer comprising a plurality of blades spaced about a central tube, the mixer configured to receive a reductant and exhaust gas mixture;a closed-end tube downstream of the mixer configured to receive the reductant and exhaust gas mixture from the mixer, the closed-end tube comprising a closed end opposing an open end, the closed end being substantially perpendicular to an exhaust flow direction, wherein the closed-end tube comprises a sidewall extending between the open and closed end, the sidewall comprising a plurality of perforations; anda flange plate comprising an annular disk, the annular disk comprising a plurality of openings through which reductant and exhaust gas mixture received from the closed-end tube is flowable, wherein the flange plate is coupled to and supports in place the closed-end tube.2. The SCR system of claim 1 , wherein the SCR system is one of an in-line system claim 1 , end-to-end system claim 1 , or end-to-side system.3. The SCR system of claim 1 , further comprising a linear exhaust ...

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Номер записи: 73

19-12-2013 дата публикации

FABRICATED MEDIA LINE AND USE IN AN SCR CATALYST SYSTEM

Номер: US20130333772A1

Автор: Etscheid Tobias, Isenburg Marco, Plietsch Reinhard, Preiss Oliver, Sachse Martin, Schwarzkopf Otfried

Принадлежит:

An assembled media line, or a section of a media line, for connecting a tank to a dosing unit in order to add a reducing agent into a SCR catalyst system of an internal combustion engine. The fluid line has electric heating in some sections for heating of the fluid. The fluid line is additionally provided, at least in some areas, with fluid tempering. In use, the media line connects a tank to a dosing unit in order to add a reducing agent in a SCR catalyst system of an internal combustion engine, and wherein the engine coolant is used as tempering fluid. The tempering is achieved by inclusion of at least one tempering line running alongside the fluid line. A line connector for such a media line includes a connecting housing in which the fluid line and two tempering lines can be connected. 1. An assembled media line for connecting a tank (T) to a dosing unit (D) in order to add a fluid that is a reducing agent into a SCR catalyst system of an internal combustion engine (M) , the media line comprising: a fluid line extending between terminal line connectors and provided with electrical heating elements at least in some sections to heat the fluid , a tempering member adjacent to at least a portion of the fluid line for tempering by means of of the fluid with a tempering fluid , the tempering member including at least one transition to at least one of an external feed line and an external discharge line for the tempering fluid.2. The media line according to claim 1 , wherein the tempering member includes at least one tempering line claim 1 , defining an inlet line and a return line claim 1 , the at least one tempering line extending alongside at least part of the length of the fluid line.3. The media line according to claim 2 , wherein the at least one tempering line is enclosed together with the fluid line by a line sheath.4. The media line according to claim 2 , wherein at least one of the terminal line connectors includes a connector housing in which the at least one ...

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Номер записи: 74

19-12-2013 дата публикации

ENGINE EXHAUST GAS ADDITIVE STORAGE SYSTEM

Номер: US20130334077A1

Автор: CHOI Jae Sik, OP DE BEECK Joel, Van Schaftingen Jules-Joseph

Принадлежит: INERGY AUTOMOTIVE SYSTEMS RESEARCH (Societe Anonyme)

A system for storing an internal combustion engine exhaust gas liquid additive, and including a tank for storing the additive, the tank including two halve shells manufactured as two separate parts that are assembled, at least one of the shells including an active component fixed inside of it. 114-. (canceled)15. A system for storing an internal combustion engine exhaust gas liquid additive , and comprising:a tank for storing the additive, the tank including a lower half shell and an upper half shell that are manufactured as two separate parts and that are only assembled when at least one internal component has been inserted/positioned on at least one of the two separate parts, at least one of the lower or supper shells comprising an active component fixed inside of it.16. A storage system according to claim 15 , wherein the at least one internal component is a heater.17. A storage system according to claim 15 , wherein the lower and/or the upper shell integrate a heater for which the tank shell is an essential part assuring either a support for the heater claim 15 , or the heating itself by conductivity claim 15 , or a combination of both.18. A storage system according to claim 15 , wherein at least one of the lower or upper shells is made by injection molding a plastic.19. A storage system according to claim 15 , wherein the lower shell is made by injection molding and integrates a liquid trap.20. A storage system according to claim 16 , wherein the heater is a flexible heater.21. A storage system according to claim 16 , wherein the heater is a resistive wire.22. A storage system according to claim 21 , wherein the resistive wire is positioned inside at least one of the tank shells and/or outside at least one of the tank shells.23. A storage system according to claim 21 , wherein the resistive wire is mounted on a support claim 21 , or a flexible net claim 21 , which is in turn mounted on a part integral with one of the tank halve shells.24. A storage system ...

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Номер записи: 75

19-12-2013 дата публикации

Quick-attach steam dispersion tubes and method of attachment

Номер: US20130334715A1

Автор: James M. Lundgreen, Jeffrey Martin Horejsi

Принадлежит: Dri Steem Corp

A steam dispersion system is disclosed. The steam dispersion system includes a header and a mounting plate spaced from the header. A steam dispersion tube including a first end and a second end and an interior cavity defined between the first end and the second end is mounted between the mounting plate and the header. The steam dispersion tube defines a longitudinal axis. A biasing structure is mounted between the mounting plate and the header, wherein the biasing structure applies a biasing force on the steam dispersion tube along a direction parallel to the longitudinal axis of the steam dispersion tube when mounted between the header and the mounting plate.

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Номер записи: 76

02-01-2014 дата публикации

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

Номер: US20140000247A1

Автор: Brad J. Adelman, Edward M. Derybowski, Shyam Santhanam, Vadim Strots

Принадлежит: International Engine Intellectual Property Co LLC

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

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Номер записи: 77

02-01-2014 дата публикации

Multifunctional Exhaust Gas Purifying Filter, and Exhaust Gas Purifying Apparatus Using the Same

Номер: US20140004013A1

Автор: Hwang Kyung-Ran, Kim Dong-Kook, KIM Tae-Hwan, Lee Chun-Boo, LEE Young-Jae, Park Jong-Soo, Ryi Shin-Kun, Yoo Kyung-Sun

Принадлежит: KOREA INSTITUTE OF ENERGY RESEARCH

The present invention relates to a configuration method of a multifunctional particulate filter (MFPF), capable of reducing the content of particulate material (PM), carbon monoxide (CO) and hydrocarbons (HC), and increasing the content of nitrogen dioxide (NO), The MFPF may coat zeolite and an oxidation catalyst on both exhaust gas intake/discharge sides simultaneously, so as to minimize the slippage of HC and generate high-concentration NO. 1. A multifunctional exhaust as purifying filter , comprising:a housing including a plurality of channels which extend in a longitudinal direction of the housing and have cross-sections of grid shape formed by air-penetrable walls; anda gas inlet passage and a gas outlet passage defined by plugs fixed to either an upstream end portion or downstream end portion of each of the channels in a gas flow direction around the air-penetrable walls,wherein each of the gas inlet passages is surrounded by the gas outlet passages, andan oxidation catalyst is coated on inner surfaces of the gas inlet passages and the gas outlet passages.2. The multifunctional exhaust gas purifying filter of claim 1 , wherein an inner surface of at least one of the gas inlet passage and the gas outlet passage is primarily coated with an adsorbent to form an adsorption layer claim 1 , and secondarily coated with an oxidation catalyst on the adsorbent layer.3. The multifunctional exhaust gas purifying filter of claim 1 , wherein an inner surface of at least one of the gas inlet passage and the gas outlet passage is coated with an oxidation catalyst mixed with an adsorbent.4. The multifunctional exhaust gas purifying filter of claim 2 , wherein the adsorbent is zeolite.5. The multifunctional exhaust gas purifying filter of claim 1 , wherein the oxidation catalyst includes any one selected from platinum and palladium.6. An exhaust gas purifying apparatus claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the multifunctional exhaust gas ...

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Номер записи: 78

09-01-2014 дата публикации

Injector Having Swirl Structure Downstream of Valve Seat

Номер: US20140008465A1

Автор: CAVANAGH Mark S., Lucas Robert G.

Принадлежит:

An atomizing injector comprises a body having a central bore with a valve situated in the bore, leading to a chamber. An actuator moves the valve between closed condition and open conditions, selectively exposing the chamber to a flow of pressurized liquid. A discharge port extends from the chamber to a discharge orifice. A swirl element is situated in the chamber, while leaving a free space in the chamber immediately above the discharge port. When the valve is opened, liquid flows into the chamber, through the swirl element into the space, forming a whirl in the space before passing through the discharge port and exiting the discharge orifice as an atomized whirling spray. 1. An injector comprising:a longitudinal body;a central bore in the body, having upper and lower ends and a source volume for receiving pressurized fluid to be injected;a valve situated in the bore, having a moveable sealing face selectively seated against a stationary sealing face;a chamber in selective fluid communication with the source volume through said valve;a control system that selectively moves the valve member into a closed condition whereby said moveable face seals against said stationary face and into an open condition whereby the moveable face lifts from said stationary face;a discharge port from the chamber to a discharge orifice;a swirl element situated in the chamber, while leaving a free space in the chamber immediately above the discharge port; andwhereby when the valve is in said closed condition, no fluid can enter said chamber from the source volume and when the valve is in said open condition, pressurized fluid flows into said chamber, through said swirl element into said space, forming a whirl in said space before passing through said discharge port and exiting said discharge orifice as an atomized whirling spray.2508608. An injector mounted on an exhaust conduit from a diesel engine and supplied with a source ( , ) of exhaust treatment liquid comprising:{'b': 502', '602', ...

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Номер записи: 79

16-01-2014 дата публикации

Spray lance arrangement

Номер: US20140014139A1

Автор: Per Håkan Fredrik Landmér

Принадлежит: Alstom Technology AG

A two media spray lance and nozzle useful for moistening at least a portion of absorbent material present in a mixer. The nozzle includes a central body with a connecting portion for connecting the nozzle to the two media spray lance for a supply of liquid and gas thereto, and an atomizing portion. The atomizing portion delivers droplets of liquid to the absorbent material present in the mixer to obtain moistened absorbent material.

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Номер записи: 80

16-01-2014 дата публикации

EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE

Номер: US20140017138A1

Автор: Nakano Takanori

Принадлежит:

An object of the invention is to satisfactorily remove solid materials derived from reducing agent and depositing on a wall of an exhaust passage in an exhaust gas purification apparatus for an internal combustion engine equipped with a selective reduction catalyst provided in the exhaust passage of the internal combustion engine and a reducing agent supply apparatus that supplies reducing agent derived from ammonia into the exhaust passage upstream of the selective reduction catalyst. To achieve the object, according to the invention, a fuel supply apparatus that supplies fuel into the exhaust passage upstream of the reducing agent supply apparatus and an ignition apparatus that ignites fuel supplied by the fuel supply apparatus to generate flame are provided. Solid materials derived from the reducing agent are removed by the flame generated by the fuel supply apparatus and the ignition apparatus. 1. An exhaust gas purification apparatus for an internal combustion engine comprising:a selective reduction catalyst disposed in an exhaust passage of the internal combustion engine;a reducing agent supply apparatus that supplies reducing agent derived from ammonia into the exhaust passage upstream of said selective reduction catalyst;a fuel supply apparatus that supplies fuel into the exhaust passage upstream of said selective reduction catalyst; andan ignition apparatus that ignites fuel supplied by said fuel supply apparatus to generate flame,wherein said reducing agent supply apparatus, said fuel supply apparatus, and said ignition apparatus are arranged in such a way that said flame reaches a striking site on the wall of the exhaust passage on which the reducing agent supplied by said reducing agent supply apparatus strikes.2. An exhaust gas purification apparatus for an internal combustion engine according to claim 1 , wherein said reducing agent supply apparatus claim 1 , said fuel supply apparatus claim 1 , and said ignition apparatus are arranged in such a way ...

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Номер записи: 81

23-01-2014 дата публикации

EXHAUST CLEANER FOR INTERNAL COMBUSTION ENGINE

Номер: US20140023561A1

Автор: Kidokoro Toru, Sakurai Kenji

Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

The exhaust cleaner for internal combustion engine is equipped with NOx storage reduction catalyst () which is disposed in exhaust passage of an internal combustion engine and which absorb and reduce the NOx contained in exhaust gas. The NOx storage reduction catalyst () each include a coating layer that has been formed on the inner wall of cells through which the exhaust passage, the coating layer having the catalytic function. The coating layers have been formed so that the thickness of the coating layer of the NOx storage reduction catalyst () located upstream in the flow of the exhaust gas is smaller than the thickness of the coating layer of the NOx storage reduction catalyst () located downstream. Due to this configuration, the NOx storage reduction ccatalyst () are inhibit from being poisoned by sulfur and high NOx removal percentage is maintained. 1. An exhaust cleaner for an internal combustion engine , comprising:an NOx storage reduction catalyst that is disposed in an exhaust passage of the internal combustion engine, and absorbs or reduces NOx in exhaust gas,wherein the NOx storage reduction catalystcomprises a coating layer that is formed on inner walls of cells through which the exhaust gas passes, contains a storage material that absorbs NOx, and has a function as a catalyst, andwherein a thickness of the coating layer at an upstream side in a flow of the exhaust gas is smaller than a thickness of the coating layer at a downstream side.2. The exhaust cleaner for an internal combustion engine according to claim 1 , further comprising:at least two of the NOx storage reduction catalysts,wherein the NOx storage reduction catalysts are connected in series with respect to the flow of the exhaust gas, andout of the NOx storage reduction catalysts, a coating layer of the NOx storage reduction catalyst that is disposed at the upstream side is thinner than a coating layer of the NOx storage reduction catalyst that is disposed at the downstream side.3. The ...

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Номер записи: 82

30-01-2014 дата публикации

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

Номер: US20140030175A1

Автор: Walter B. Hersel

Принадлежит: TI GROUP AUTOMOTIVE SYSTEMS, L.L.C.

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

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Номер записи: 83

06-02-2014 дата публикации

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

Номер: US20140033681A1

Автор: Sascha Dolenec

Принадлежит: ALBONAIR GmbH

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

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Номер записи: 84

06-02-2014 дата публикации

Method for operating an scr catalyic converter provided for the aftertreatment of exhaust gases of an internal combustion engine

Номер: US20140033682A1

Автор: Frank Schweizer

Принадлежит: ROBERT BOSCH GMBH

In a method for operating an SCR catalytic converter provided for the reduction of NOx in exhaust gases of an internal combustion engine, which SCR catalytic converter is operated with a reagent which can be stored in the SCR catalytic converter such that there is a certain reagent fill level in the SCR catalytic converter, wherein the actual NOx concentration downstream of the SCR catalytic converter is monitored on the basis of the signal of a sensor, which is arranged downstream of the SCR catalytic converter and which is sensitive at least with respect to NOx, in comparison with a calculated NOx concentration downstream of the SCR catalytic converter, it is provided according to the invention that, in the case of a comparison result which represents a conversion deficit as a difference between the measured actual NOx concentration and the previous calculated reagent fill level in the SCR catalytic converter is corrected to a new calculated reagent fill level, whereby an immediate dosing of reagent takes place.

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Номер записи: 85

06-02-2014 дата публикации

FUEL INJECTION CONTROL SYSTEM OF AN INTERNAL COMBUSTION ENGINE

Номер: US20140033687A1

Автор: Kidokoro Toru, Nakayama Yusuke, Sakurai Kenji

Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

The present invention has its object to provide a technique which can eliminate HC poisoning of an exhaust gas purification catalyst in a suitable manner in a fuel injection control system of an internal combustion engine which can use a liquid fuel and a gas fuel. In order to achieve this object, the present invention is constructed such that in the fuel injection control system of an internal combustion engine capable of using a liquid fuel and a gas fuel, when HC poisoning of the exhaust gas purification catalyst has occurred, HC poisoning is intended to be eliminated by causing the internal combustion engine to operate by the use of the gas fuel if the temperature of the exhaust gas purification catalyst is less than a specified value, whereas the elimination of HC poisoning is intended by causing the internal combustion engine to operate by the use of the liquid fuel if the temperature of an exhaust gas purification device is not less than the specified value. 1. A fuel injection control system of an internal combustion engine in which a liquid fuel and a gas fuel are able to be used , said system comprising:an obtaining unit that obtains the temperature of an exhaust gas purification catalyst which is arranged in an exhaust passage of the internal combustion engine; anda control unit that, at the time when HC poisoning of said exhaust gas purification catalyst has occurred, causes the internal combustion engine to operate with the gas fuel if the temperature obtained by said obtaining unit is less than a specified value, and causes the internal combustion engine to operate with the liquid fuel if the temperature obtained by said obtaining unit is not less than the specified value.2. The fuel injection control system of an internal combustion engine according to claim 1 , wherein when a remaining amount of the gas fuel is large claim 1 , the specified value is made higher in comparison with the time when the remaining amount of the gas fuel is small.3. The fuel ...

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Номер записи: 86

06-02-2014 дата публикации

INJECTOR FOR A UREA-WATER SOLUTION

Номер: US20140034170A1

Автор: DIOUF CHEIKH

Принадлежит: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

An injector for a urea-water solution includes at least a main body with a fitting for the urea-water solution, a valve with a valve drive and a separate feed pipe for the urea-water solution. The separate feed pipe extends at least partly through the main body. 1. An injector for a urea-water solution , the injector comprising:a main body having a fitting for the urea-water solution; anda valve having a valve drive and a separate feed pipe for the urea-water solution, said separate feed pipe extending at least partly through said main body.2. The injector according to claim 1 , which further comprises a nozzle plate in which said separate feed pipe ends.3. The injector according to claim 2 , wherein said nozzle plate has at least a plurality of nozzle orifices.4. The injector according to claim 2 , wherein said nozzle plate forms a protruding end of said separate feed pipe.5. The injector according to claim 1 , wherein said main body includes a cooling system having an inlet claim 1 , an outlet and at least one cooling duct extending through said main body and being partly penetrated by said separate feed pipe.6. The injector according to claim 1 , wherein said main body forms a reservoir for the urea-water solution adjacent said valve claim 1 , and said valve is disposed movably relative to said reservoir.7. The injector according to claim 1 , wherein said main body forms a reservoir for the urea-water solution adjacent said valve claim 1 , and said valve includes a plurality of intake pipes opening into said reservoir.8. The injector according to claim 1 , which further comprises at least one spring element biasing said valve against said main body.9. The injector according to claim 1 , which further comprises a base with a socket for said main body claim 1 , and air-gap insulation formed between said base and said main body in a region around a part of said separate feed pipe.10. The injector according to claim 9 , which further comprises at least one spacer ...

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Номер записи: 87

20-02-2014 дата публикации

OFF GAS PURIFICATION DEVICE

Номер: US20140050627A1

Автор: Banno Yasuyuki, Mende Takeshi, NAGATA Makoto, Okajima Toshinori

Принадлежит: N.E. CHEMCAT CORPORATION

An exhaust gas purification catalyst apparatus. The apparatus has a noble metal component for oxidizing NOx in an exhaust gas discharged from a diesel engine, a reducing agent spraying means for supplying the reducing agent selected from a urea component or an ammonia component, and a selective reduction catalyst (SCR) not comprising a noble metal for removing by reduction NOx by contacting with the reducing agent, in this order from the upstream side of an exhaust gas passage. Activity of the selective reduction catalyst (SCR) is maintained by setting that the noble metal component of the oxidation catalyst (DOC) comprises platinum and palladium, and ratio of platinum particles existing alone is 20% or less, or average particle diameter of the noble metal is 4 nm or larger, and by suppressing volatilization of platinum from the oxidation catalyst (DOC), even when catalyst bed temperature increases up to 900° C. 1. An exhaust gas purification apparatus arranged with an oxidation catalyst (DOC) comprising a noble metal component for oxidizing nitrogen oxides (NO) in an exhaust gas discharged from a diesel engine , a reducing agent spraying means for supplying the reducing agent selected from a urea component or an ammonia component , and a selective reduction catalyst (SCR) not comprising a noble metal for removing by reduction nitrogen oxides (NO) by contacting with the reducing agent , in this order from the upstream side of an exhaust gas passage , characterized in thatactivity of the selective reduction catalyst (SCR) is maintained by setting that the noble metal component of the oxidation catalyst (DOC) comprises platinum and palladium, and ratio of platinum particles existing alone is 20% or less, or average particle diameter of the noble metal is 4 nm or larger, and by suppressing volatilization of platinum from the oxidation catalyst (DOC), even when catalyst bed temperature increases up to 900° C.2. The exhaust gas purification apparatus according to claim 1 ...

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Номер записи: 88

06-03-2014 дата публикации

SECONDARY AIR INTRODUCTION SYSTEM AND METHOD FOR SYSTEM OPERATION

Номер: US20140060009A1

Автор: Buckland Julia Helen, Dai Wen, Hedges John, Laing Paul M., Sun Harold Huimin, Yi Jianwen James, Zhang Xiaogang

Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

A vehicle system operation method is provided. The method comprises, during a first operating condition, increasing back pressure in a first exhaust conduit positioned upstream of a turbine and downstream of a first emission control device and during a second operating condition, reducing back pressure in the first exhaust conduit and flowing boosted air from downstream of a compressor into a second exhaust conduit positioned upstream of a second emission control device and downstream of the turbine. 1. A vehicle system operation method comprising:during a first operating condition, increasing back pressure in a first exhaust conduit positioned upstream of a turbine and downstream of a first emission control device; andduring a second operating condition, reducing back pressure in the first exhaust conduit and flowing boosted air from downstream of a compressor into a second exhaust conduit positioned upstream of a second emission control device and downstream of the turbine.2. The method of claim 1 , further comprising during a third operating condition claim 1 , reducing boosted air flow from downstream of the compressor into the second exhaust conduit and further reducing the back pressure in the first exhaust conduit.3. The method of claim 2 , where reducing boosted air flow from downstream of the compressor to the second exhaust conduit includes inhibiting gas flow.4. The method of claim 1 , further comprising during the second operating condition exothermically reacting a reductant with the boosted air upstream of the second emission control device.5. The method of claim 1 , where the first and second emission control devices are catalysts.6. The method of claim 1 , where the first operating condition is when the engine is below a threshold temperature and the second operating condition is when the engine is above the threshold temperature.7. The method of claim 1 , where the first operating condition is when engine braking is requested in the vehicle.8. The ...

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Номер записи: 89

06-03-2014 дата публикации

Electrically heated catalyst device having a variable resistance monolith

Номер: US20140060014A1

Автор: Chang H. Kim, Charles E. Solbrig, Eugene V. Gonze, Michael J. Paratore, JR.

Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

An exhaust gas treatment system for an internal combustion engine is provided and includes an exhaust gas conduit, a generator, an electrically heated catalyst (“EHC”) device, and a control module. The exhaust gas conduit is in fluid communication with, and is configured to receive an exhaust gas from the internal combustion engine. The generator operates at a generator speed to produce electrical power. The EHC device is in fluid communication with the exhaust gas conduit. The EHC device includes a monolith structure that is divided into a plurality of segments that define discrete resistive paths. The resistive paths are selectively connected to the generator for receiving electrical power. The control module is in communication with the EHC device, the generator, and the internal combustion engine. The control module includes control logic for determining the generator speed.

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Номер записи: 90

06-03-2014 дата публикации

Exhaust Gas After Treatment System

Номер: US20140065022A1

Автор: Sacha Dolenec, Sebastian Mühlenbrock, Werner Overhoff

Принадлежит: ALBONAIR GmbH

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

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Номер записи: 91

13-03-2014 дата публикации

Mixing device in an exhaust gas pipe

Номер: US20140069087A1

Автор: Julien Ampere, Michel Vanvolsem

Принадлежит: Renault Trucks SAS

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

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Номер записи: 92

20-03-2014 дата публикации

Ammonia storage device and exhaust line equipped with such a device

Номер: US20140075922A1

Автор: Guinehut Sebastien

Принадлежит: Faurecia Systemes D'Echappement

An ammonia storage device has an enclosure, a solid material provided to absorb and desorb ammonia, and a heating member that heats the solid material. The storage device also has a metal foam that is positioned in the enclosure and which has open pores. The solid material essentially includes particles of suitable sizes to be housed in the pores. 1. An ammonia storage device comprising:an enclosure;a solid material provided to absorb and desorb ammonia;a heating member for heating the solid material; anda metal foam positioned in the enclosure and having open pores, the solid material essentially including particles of suitable sizes to be housed in said pores.2. The device according to claim 1 , wherein the foam is an aluminum or aluminum alloy metal foam.3. The device according to claim 1 , wherein the pores have an average diameter comprised between 0.1 and 10 mm.4. The device according to claim 1 , wherein the particles not charged with ammonia have an average diameter comprised between 50 μm and 5 mm.5. The device according to claim 1 , wherein the heating member is situated outside the enclosure.6. The device according to claim 1 , wherein the heating member comprises a glow plug situated inside the enclosure.7. The device according to claim 1 , wherein the heating member comprises two electrodes placed inside the enclosure claim 1 , and an electrical generator connected to the two electrodes claim 1 , to circulate an electrical current in the metal foam.8. The device according to claim 1 , wherein the enclosure is rigidly fastened to the metal foam by at least one weld line.9. The device according to claim 1 , wherein at least part of the enclosure is a is a skin integral with the metal foam.10. The device according to claim 1 , wherein the enclosure delimits an inner volume that has a plurality of zones not occupied by the metal foam claim 1 , and which are separated from each other by zones that are occupied by the metal foam.11. A vehicle exhaust system ...

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Номер записи: 93

20-03-2014 дата публикации

CORRECTION DEVICE FOR AIR/FUEL RATIO SENSOR

Номер: US20140075924A1

Автор: Aoki Keiichiro, Hayashita Go, Sasaki Takanori

Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A correction device for an air/fuel ratio sensor in the present invention, the sensor issuing an output according to an air/fuel ratio and installed on the downstream from catalyst of the exhaust passage, has air/fuel ratio control means for controlling an air/fuel ratio of an exhaust gas on the upstream side from a catalyst to switch between a rich air/fuel ratio which is richer and a lean air/fuel ratio which is leaner than a stoichiometric air/fuel ratio. Moreover, correction means for correcting an output of the sensor in accordance with a difference between the output of the sensor during a predetermined period during air/fuel ratio control by the air/fuel ratio control means, and a reference output corresponding to a stoichiometric air/fuel ratio, is provided. 1. A correction device for an air/fuel ratio sensor comprising:a catalyst installed in an exhaust passage of an internal combustion engine and having oxygen storage capacity;an air/fuel ratio sensor installed on the downstream side from the catalyst of the exhaust passage and issuing an output according to the air/fuel ratio of an exhaust gas;air/fuel ratio control means for controlling an air/fuel ratio of an exhaust gas on the upstream side from a catalyst to switch between a rich air/fuel ratio which is richer and a lean air/fuel ratio which is leaner than a stoichiometric air/fuel ratio;correction means for correcting an output of the air/fuel ratio sensor in accordance with a difference between an output of the air/fuel ratio sensor in a predetermined period during an air/fuel ratio control by the air/fuel ratio control means and a reference output corresponding to the stoichiometric air/fuel ratio.2. The correction device for an air/fuel ratio sensor according to claim 1 , whereinthe predetermined period is a period from after a first time has elapsed since the air/fuel ratio is switched from the rich air/fuel ratio to the lean air/fuel ratio on the upstream side from the catalyst, by the air/fuel ...

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Номер записи: 94

20-03-2014 дата публикации

Exhaust system for a motor vehicle

Номер: US20140075925A1

Автор: Silvia Calvo

Принадлежит: Eberspaecher Exhaust Technology GmbH and Co KG

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

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Номер записи: 95

20-03-2014 дата публикации

SYSTEM FOR SUPPLYING A LIQUID FOR A VEHICLE AND INTEGRATED PUMP/FILTER MODULE

Номер: US20140079610A1

Автор: BUDZYK Laurent, CONESA Julien, OP DE BEECK Joel

Принадлежит: INERGY AUTOMOTIVE SYSTEMS RESEARCH

A supply system for a liquid includes a liquid tank, a supply line, a pump, a filter, and a device that makes it possible to purge the line, pump, and filter. The supply system further includes a non-return device preventing liquid from entering into these elements once they have been purged. In this system, the pump, filter and non-return device are combined in a compact module. The filter at least partly surrounds the pump. The non-return device is an integral part of a common housing that surrounds the filter and at least one part of the pump. 1. A supply system for a liquid comprising a liquid tank , a liquid supply line , a pump , a filter and a device that makes it possible to purge the line , pump and filter and that comprises a non-return device preventing liquid from entering into these elements once they have been purged , wherein the pump , filter and non-return device are combined in a compact module , the filter at least partly surrounding the pump and the non-return device being an integral part of a common housing that surrounds the filter and at least one part of the pump , this housing having at least in part a geometry such that it acts as the non-return device.2. The supply system according to claim 1 , wherein the pump sucks up through the filter.3. The supply system according to claim 1 , wherein the non-return device comprises a siphon part of geometry such that once the line claim 1 , pump and filter have been purged and filled with gas claim 1 , this part only allows the flow of liquid from the tank to the line claim 1 , pump and filter when the pump is started up.4. The supply system according to claim 1 , wherein the pump is a rotary pump comprising a rotation axle attached both to a mechanical pumping element and a magnetized rotor claim 1 , this rotor comprising at least one recess through which the fluid sucked up by the mechanical pumping element is forced; and wherein the filter surrounds at least the mechanical pumping element.5. The ...

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Номер записи: 96

27-03-2014 дата публикации

METHOD FOR CONTROLLING THE NOx CONCENTRATION IN THE EXHAUST GAS OF AN INTERNAL COMBUSTION ENGINE

Номер: US20140083083A1

Автор: BERNHARD Alexander, FLOHR Andreas, Krammer Andreas, LEHMANN Martin, Prothmann Michael, Remele Joerg

Принадлежит: MTU Friedrichshafen GmbH

In a method for controlling the NOx concentration in the exhaust gas of an internal combustion engine in which an NOx control deviation is calculated from an actual NOx value and a desired NOx value, a control value is calculated based on the NOx control deviation via an NOx controller and by means of the control value at least one condition of the cylinder inlet flow volume of the internal combustion engine is adjusted in that, additionally, an adaption injection begin is determined in dependence on the control value of the NOx controller, and the injection begin is changed by the adaption injection begin. 11. A method for controlling the NOx concentration in the exhaust gas of an internal combustion engine () , comprising the steps of:calculating an NOx control deviation (dNOx) from a momentary NOx value (NOx(IST)) and a desired NOx value (NOx(SL)),{'b': 20', '1, 'calculating based on the NOx control deviation (dNOx) by way of a NOx controller () a control value (SG) and adjusting, via the control value (SG), at least one condition value of the cylinder inlet flow volume (ZAS) of the internal combustion engine (), and'}{'b': '20', 'determining an adaption injection begin (SB(A)) dependent on the control value (SG) of the NOx controller () and'}adjusting the injection begin (SB) via the adaption injection begin (SB(A)).2. The method according to claim 1 , wherein as the condition value of the cylinder inlet flow volume (ZAS) at least one of a charging pressure (p5) and a recirculated exhaust gas flow volume (AGR) is adjusted by means of the control value.3420282927. The method according to claim 2 , wherein the adaption injection begin (SB()) is determined by an evaluation of the control value (SG) of the NOx controller () based on limit values and in dependence an this evaluation a first adaption function () claim 2 , a second adaption function () or a normal function is selected.42927. The method according to claim 3 , wherein claim 3 , with the first adaption ...

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Номер записи: 97

03-04-2014 дата публикации

Flow device for an exhaust system

Номер: US20140093439A1

Автор: Antonio Gil, Bart Schellens, Korneel De Rudder, Nic Degelin

Принадлежит: Donaldson Co Inc

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

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Номер записи: 98

10-04-2014 дата публикации

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

Номер: US20140096512A1

Автор: Jan Hodgson, Peter Bauer

Принадлежит: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

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

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Номер записи: 99

01-01-2015 дата публикации

ARRANGEMENT FOR EXHAUST-GAS AFTERTREATMENT SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR OPERATING THE EXHAUST-GAS AFTERTREATMENT SYSTEM ARRANGEMENT

Номер: US20150000255A1

Автор: Harmsen Jan, Linzen Frank

Принадлежит:

A method for operating an exhaust-gas aftertreatment system arrangement is provided. The method includes in a first operating state, flowing a substantial majority of an exhaust-gas stream from the internal combustion engine through a first NOstorage catalytic converter positioned in a main exhaust branch of an exhaust aftertreatment system arrangement and in a second operating state, flowing a substantial majority of the exhaust-gas stream through a first bypass branch branching off from the main exhaust branch upstream of the first NOstorage catalytic converter and which opens into the main exhaust branch downstream of the first NOstorage catalytic converter and regenerating the first NOstorage catalytic converter. 1. An exhaust-gas aftertreatment system arrangement for an internal combustion engine , comprising:an exhaust tract receiving an exhaust-gas stream from the internal combustion engine including;{'sub': 'x', 'a main exhaust branch with a first NOstorage catalytic converter positioned therein;'}{'sub': x', 'x, 'a first bypass branch branching off from the main exhaust branch at a branching point upstream of the first NOstorage catalytic converter and which opens into the main exhaust branch downstream of the first NOstorage catalytic converter and through which at least a part of the exhaust-gas stream can flow; and'}{'sub': 'x', 'a second NOstorage catalytic converter is arranged in the main exhaust branch downstream of the opening-in point of the first bypass branch into the main exhaust branch; and'}{'sub': 'x', 'a second bypass branch branching off from the main exhaust branch at a branching point downstream of the opening-in point of the first bypass branch into the main exhaust branch and upstream of the second NOstorage catalytic converter and through which at least a part of the exhaust-gas stream can flow.'}2. The exhaust-gas aftertreatment system arrangement of claim 1 , where the exhaust tract further comprises a first valve positioned in the ...

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Номер записи: 100