Reactor Plus A Washer, Sorber Or Mechanical Separator Patents (Class 60/297)
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Publication number: 20140318103Abstract: A method and apparatus for controlling a diesel particulate filter is disclosed. The control is carried out with the aid of a soot loading model selected from a plurality of available soot loading models including at least one soot loading physical model which makes use of signals from an exhaust gas pressure sensor. A reliability score is allocated to each soot loading model such that the soot loading model with the best reliability score is used for the diesel particulate filter control. If a DPF parking effect is identified based on an engine shut-off time a DPF inlet temperature either the reliability score of the soot loading physical model or the reliability scores of all remaining (non-physical) soot loading models are changed, and use of the soot loading physical model is avoided or disabled to help the control of the diesel particulate filter.Type: ApplicationFiled: April 30, 2014Publication date: October 30, 2014Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Giacomo LATROFA, Giuseppe SCHIAVONE, Markus HEMM, Christian SCHAEFER
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Publication number: 20140322113Abstract: A catalysed filter for filtering particulate matter from exhaust gas emitted from a positive ignition internal combustion engine comprises a ceramic porous wall-flow filter substrate having a total substrate length and having inlet channels defined in part by ceramic inlet wall surfaces and outlet channels defined in part by ceramic outlet wall surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a first porous structure containing pores of a first mean pore size, wherein the porous substrate is coated in part with a catalyst washcoat composition, wherein a second porous structure of a washcoated part of the porous substrate contains pores of a second mean pore size, wherein the second mean pore size is less than the first mean pore size, which catalyst washcoat composition being disposed in a first zone comprising the inlet surfaces of a first substrate length less than the total substrate length, wherein a second zone comprising the outlet surfaces of a second substrate length contType: ApplicationFiled: April 24, 2014Publication date: October 30, 2014Applicant: Johnson Matthey Public Limited CompanyInventors: Philip Gerald BLAKEMAN, David Robert GREENWELL
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Publication number: 20140322112Abstract: A positive ignition engine comprising an exhaust system, which comprises a catalysed filter for filtering particulate matter from exhaust gas emitted from a positive ignition internal combustion engine, which filter comprising a porous substrate having a total substrate length and having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a first porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat composition which is a NOx absorber catalyst washcoat composition comprising at least one precious metal; or a selective catalytic reduction (SCR) catalyst washcoat composition, wherein a second porous structure of the washcoated porous substrate contains pores of a second mean pore size, wherein the second mean pore size is less than the first mean pore size, which NOx absorber catalyst washcoat or SCR catalyst washcoat being axially arranged on the porous substrate as a first zone comprising the inlType: ApplicationFiled: April 23, 2014Publication date: October 30, 2014Applicant: Johnson Matthey Public Limited CompanyInventors: Philip Gerald BLAKEMAN, David Robert GREENWELL
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Patent number: 8874309Abstract: A method for acquiring information from a driving operation of a vehicle, in which first information is acquired with respect to at least one operating state of the vehicle and additional second information is ascertained with respect to this at least one operating state using statistical methods, the first and second information concerning this at least one operating state being stored. A method for the assigning and diagnosis of at least one operating state of a vehicle, a control unit, a computer program and a computer-program product are also provided.Type: GrantFiled: September 10, 2008Date of Patent: October 28, 2014Assignee: Robert Bosch GmbHInventors: Andreas Genssle, Michael Kolitsch, Tobias Pfister
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Patent number: 8869512Abstract: An apparatus for controlling engine operations to a low NOx output amount at low selective catalytic reduction (SCR) temperature values and alternatively for controlling engine operations in an EGR cooler bypass regime at low engine load levels is described. The apparatus includes a controller that interprets a present speed and a present load of an engine, that determines an engine operating region in response to the present speed and the present load, and that provides an EGR cooler bypass command that provides EGR cooler bypass flow in response to the engine operating region being a first, low load, region. The controller operates the engine with supplemental NOx management in response to the engine operating region being a second, intermediate load, region. The controller operates the engine without either of the EGR cooler bypass or the supplemental NOx management in response to the engine operating region being a third region.Type: GrantFiled: April 4, 2012Date of Patent: October 28, 2014Assignee: Commins Inc.Inventors: Vivek Anand Sujan, Abdul R. Ofoli, Govindarajan Korthandaraman
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Patent number: 8869516Abstract: A machine includes an internal combustion engine disposed within an engine compartment and supported on a machine frame. An exhaust stack has an inlet fluidly connected to an exhaust manifold of the internal combustion engine and an outlet in fluid communication with ambient air. A diesel particulate filter is disposed along the exhaust stack. A cooling package includes at least one heat exchanger and a blower fan. The blower fan is configured to blow cooling air from the engine compartment sequentially through the at least one heat exchanger and an outlet of the cooling package. Exhaust gas exiting the exhaust stack outlet is mixed with the cooling air exiting the cooling package outlet in a high temperature zone surrounding the exhaust stack outlet to form a fluid mixture, and a temperature of the fluid mixture at a perimeter of the high temperature zone is below 200 degrees Celsius.Type: GrantFiled: November 3, 2010Date of Patent: October 28, 2014Assignee: Caterpillar SARLInventors: Sage Frederick Smith, John Edward Preble, Jr., Terry Marlin Smith, Jr.
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Publication number: 20140311128Abstract: A reagent dosing system for dosing a reagent into the exhaust gas stream of an internal combustion engine includes a reagent tank for storing a supply of reagent; an injector module including an atomising dispenser and a positive-displacement metering pump which draws reagent from the reagent tank and delivers it to the dispenser; a supply line coupling the reagent tank to the injector module; a dosing control unit operable to control the injector module to inject reagent into the exhaust gas stream; and an additional priming pump arranged, in use, to urge reagent along the supply line toward the injector module under selected conditions.Type: ApplicationFiled: July 1, 2014Publication date: October 23, 2014Inventors: PHILIP J.G. DINGLE, MARTIN PAUL HARDY, STEFAN ROMAN ZUELCH
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Patent number: 8863504Abstract: A method includes determining a first NOx conversion efficiency (?) value and determining that a diesel exhaust fluid (DEF) level has increased a threshold amount. Further, the method includes determining a second NOx conversion ? value and comparing the first NOx conversion ? value and the second NOx conversion ? value, determining a NOx conversion ? change in response to comparing, and determining a DEF quality indicator in response to the NOx conversion ? change.Type: GrantFiled: September 30, 2010Date of Patent: October 21, 2014Assignee: Cummins Inc.Inventors: Mark Bays, Thomas A. Grana, Daniel D. Wilheim, Stephen J. Charlton, John Carson Wall
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Publication number: 20140301924Abstract: A catalysed filter for filtering particulate matter from exhaust gas comprising one or more catalyst poisons and emitted from a positive ignition internal combustion engine, which filter comprising a porous substrate having a total substrate length and having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat comprising a plurality of solid particles, wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, wherein the second mean pore size is less than the first mean pore size, which washcoat being axially arranged on the porous substrate as a first zone comprising the inlet surfaces of a first substrate length less than the total substrate length and a second zone comprising the outlet surfaces of a second substrate length less than the total substrate length, wherein the sum of the substrType: ApplicationFiled: April 4, 2014Publication date: October 9, 2014Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventor: Christopher Gough MORGAN
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Patent number: 8850801Abstract: A catalytic converter and muffler including a housing having an inlet disposed between a first end and a second end of the housing to introduce exhaust gases into an inlet chamber. A plurality of first exhaust treatment banks disposed between the inlet and the first end of the housing to allow the exhaust gases flow towards the first end from the inlet chamber into an end chamber. A mixing tube to direct the exhaust gases towards the second end from the end chamber into a flow distributor and a plurality of second exhaust aftertreatment banks and flow into an outlet chamber. At least one resonator chamber defined within the housing to attenuate noise in the exhaust gases.Type: GrantFiled: January 25, 2013Date of Patent: October 7, 2014Assignee: Caterpillar Inc.Inventors: Mirza P. Baig, Kevin J. Weiss, Raymond U. Isada, Stephan D. Roozenboom
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Patent number: 8850802Abstract: A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, particulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed.Type: GrantFiled: March 15, 2013Date of Patent: October 7, 2014Assignees: Daimler AG, HJS Emission Technology GmbH & Co. KG, Johnson Matthey Public Ltd. Co.Inventors: Anders Andreasson, Guy Richard Chandler, Claus Fnednch Goersman, James Patrick Warren, Georg Huethwohl
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Patent number: 8844271Abstract: In a method for regenerating s catalyzed diesel particulate filter (DPF) via active NO2-based regeneration with enhanced effective NO2 supply, a NOx containing gas is introduced into the DPF, and a temperature of at least one of the DPF, the NOx containing gas, and soot in the DPF is controlled while control Sing NOx levels at an inlet of the DflF so that the NOx containing gas reacts with the catalyst to form N 02 molecules that thereafter react with soot particles to form CO, CO2, and NO molecules and a N02 efficiency is greater than 0.52 gC/gNO2 and so that less than two thirds of the soot mass that is removed from the DPF is oxidized by 02 molecules in the gas to form CO and CO2 molecules.Type: GrantFiled: February 9, 2009Date of Patent: September 30, 2014Assignee: Mack Trucks, Inc.Inventors: Jeffrey A. Huber, Kenth I. Svensson
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Patent number: 8844274Abstract: A diesel engine exhaust treatment system and method is provided which utilizes a diesel particulate filter positioned in the exhaust gas stream of a vehicle which includes an SCR catalyst, an ammonia oxidation catalyst, and/or a diesel oxidation catalyst. The system is capable of performing multiple functions including converting NOx to N2, converting HC and CO to H2O and CO2, trapping particulates, and minimizing ammonia emissions. The system is more compact and efficient than prior systems utilizing separate catalyst units, and minimizes backpressure while maximizing catalyst performance.Type: GrantFiled: January 9, 2009Date of Patent: September 30, 2014Assignee: Ford Global Technologies, LLCInventors: Christine Kay Lambert, Yinyan Huang, Douglas A. Dobson, Harendra S. Gandhi
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Patent number: 8844272Abstract: Various systems and method are described for controlling an engine having an exhaust system which includes a particulate filter. One example method comprises, after shutting down the engine and spinning down the engine to rest, operating a vacuum pump to draw fresh air through the exhaust system to an intake system, and regenerating at least a portion of the particulate filter during the engine rest.Type: GrantFiled: May 22, 2012Date of Patent: September 30, 2014Assignee: Ford Global Technologies, LLCInventors: David Karl Bidner, Ralph Wayne Cunningham, Jeffrey Scott Hepburn
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Patent number: 8844273Abstract: An exhaust gas purification device arranged in an exhaust system of an engine, and includes a renewing device for burning and removing a particulate matter within the exhaust gas purification device. The renewing device is operable in the case that a clogged state of the exhaust gas purification device is equal to or more than a prescribed level, wherein the exhaust gas purification system includes renewal admittance input means which allows an actuation of the renewing device, and rotating speed holding input means for holding a rotating speed of the engine to a predetermined rotating speed, and in the case that a turn-on operation of the rotating speed holding input means is carried out in a state in which an allowing operation of the renewal admittance input means is carried out, the rotating speed holding motion of the engine is executed in preference to an actuation of the renewing device.Type: GrantFiled: April 28, 2011Date of Patent: September 30, 2014Assignee: Yanmar Co., Ltd.Inventors: Yasuo Noma, Taichi Togashi
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Patent number: 8844267Abstract: A vehicle includes an engine, an exhaust system, a selective catalytic reduction (SCR) device, a first and a second NOx sensor configured to respectively measure an upstream and a downstream NOx level, and a controller or host machine. The controller, via the present method, calculates a NOx conversion efficiency rate of the SCR device using the NOx levels from the sensors. At the end of a key cycle when an accumulated amount of upstream NOx is less than a calibrated upstream NOx level, the controller determines if the NOx conversion efficiency rate is presently passing or failing. The accumulated upstream NOx is recorded in memory for use in calculating the NOx conversion efficiency rate during a subsequent key cycle only when the NOx conversion efficiency rate is presently passing at the end of the key cycle. A control system for the vehicle uses the controller and sensors as noted above.Type: GrantFiled: March 17, 2011Date of Patent: September 30, 2014Assignee: GM Global Technology Operations LLCInventors: Stephen Paul Levijoki, Rebecca J. Darr, Steve L. Melby
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Patent number: 8839609Abstract: Provided is an exhaust gas processing device for a diesel engine which can carry out sufficient regeneration processing of a DPF. A DPF regeneration control section continues normal regeneration processing by a DPF regeneration control section when an accelerated regeneration starting operation section does not perform accelerated regeneration starting operation after notification of accelerated regeneration requiring information is started. The DPF regeneration control section prohibits the normal regeneration processing, and an accelerated regeneration re-requirement notification section starts notification of accelerated regeneration re-requiring information, when a PM accumulation amount estimate becomes equal to or higher than an accelerated regeneration re-requirement determination value J4.Type: GrantFiled: March 8, 2013Date of Patent: September 23, 2014Assignee: KUBOTA CorporationInventors: Yuuki Ishii, Katsushi Inoue
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Patent number: 8839602Abstract: A method of assessing non-methane hydrocarbon (NMHC) conversion efficiency in a diesel after-treatment (AT) system having a diesel oxidation catalyst (DOC) arranged upstream of a diesel particulate filter (DPF) includes regenerating the AT system. Additionally, the method monitors DOC inlet and outlet temperatures during the regeneration. The method also assesses whether the DOC is operating at or above threshold efficiency by determining a DOC inlet/outlet temperature difference and comparing the determined inlet/outlet temperature difference with a threshold inlet/outlet temperature difference. The method also monitors DPF outlet temperature if the DOC is operating at or above the threshold efficiency and determines a DOC temperature/DPF outlet temperature difference.Type: GrantFiled: April 10, 2012Date of Patent: September 23, 2014Assignee: GM Global Technology Operations LLCInventors: Igor Anilovich, Janean E. Kowalkowski, Cheryl J. Stark, John F. Van Gilder, Ognyan N. Yanakiev
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Publication number: 20140260211Abstract: Provided is a particulate filtration apparatus for removing combustible and noncombustible particulate matter from a lean burn engine exhaust gas stream containing particulate matter. The apparatus comprises a cyclone body with a roughened surface on the inner walls designed to trap and agglomerate the combustible particulate matter. A catalyst, selected from a selective catalytic reduction catalyst, an ammonia oxidation catalyst, a hydrolysis catalyst, an oxidation catalyst, a three-way catalyst, and combinations thereof can be coated on the roughened surface. Also provided is a system and methods for treating an exhaust gas stream.Type: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Applicant: BASF CorporationInventors: Joseph A. Patchett, Edgar V. Huennekes
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Publication number: 20140260212Abstract: A device for providing reducing agent includes a tank, a delivery unit disposed at least partially in the tank and having a suction point through which the delivery unit can draw reducing agent out of the tank, and a filter covering the suction point. An intermediate space or chamber is formed between the delivery unit and the filter, and the filter is disposed on the delivery unit in such a way that it can perform a deflection movement away from the suction point if ice forms in the intermediate chamber. A motor vehicle having the device is also provided.Type: ApplicationFiled: May 30, 2014Publication date: September 18, 2014Applicant: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBHInventors: JAN HODGSON, SVEN SCHEPERS
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Patent number: 8833060Abstract: Embodiments for regenerating a particle filter are provided. In one example, a method includes operating a spark-ignition internal combustion engine having a particle filter for collecting and burning soot particles in exhaust gas comprises in order to initiate regeneration of the particle filter. The method may include, in response to a regeneration condition, increasing exhaust temperature by retarding spark timing and once regeneration is reached, operating the engine with lean combustion to regenerate the particle filter, where a degree of leanness is based on each of a state of the filter and an upstream three-way catalyst.Type: GrantFiled: February 22, 2012Date of Patent: September 16, 2014Assignee: Ford Global Technologies, LLCInventors: Helmut Hans Ruhland, Moritz Klaus Springer, Brendan Patrick Carberry
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Patent number: 8833059Abstract: A motor vehicle combustion engine includes an air supply section and an exhaust gas recirculation section that includes a particle filter and an SCR exhaust gas purification component. A first exhaust gas turbocharger includes a turbine arranged upstream of the particle filter in the exhaust gas section. A first exhaust gas recirculation line, which diverges from the exhaust gas section upstream of the turbine of the first exhaust gas turbocharger, and a second exhaust gas recirculation line, which diverges from the exhaust gas section downstream of the particle filter are provided to recirculate the exhaust gas from the exhaust gas section into the air supply system. An SCR catalyst is arranged in the second exhaust gas recirculation line.Type: GrantFiled: October 18, 2011Date of Patent: September 16, 2014Assignee: Daimler AGInventor: Berthold Keppeler
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Patent number: 8833062Abstract: A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, particulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed.Type: GrantFiled: March 15, 2013Date of Patent: September 16, 2014Assignees: Daimier AG, HJS Emission Technology GmbH & Co. KG, Johnson Matthey Public Ltd. Co.Inventors: Anders Andreasson, Guy Richard Chandler, Claus Friedrich Goersmann, James Patrick Warren, Georg Huethwohl
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Patent number: 8833063Abstract: A method of detecting ash in an exhaust particulate filter system for an internal combustion engine includes transmitting electromagnetic energy through an exhaust particulate filter containing soot and ash, and sensing a strength of the transmitted electromagnetic energy after having been attenuated in response to the soot. The method further includes electronically storing a filter monitoring history responsive to a difference between the transmitted strength and the sensed strength of the electromagnetic energy, and detecting an amount of the ash based at least in part upon a pattern of electromagnetic energy attenuation defined by the stored filter monitoring history. An exhaust particulate filter system for implementing related methodology includes a microprocessor configured to determine a value indicative of an amount of ash contained within an exhaust particulate filter responsive to a pattern of electromagnetic energy attenuation defined by a stored filter monitoring history.Type: GrantFiled: May 17, 2011Date of Patent: September 16, 2014Assignee: Caterpillar Inc.Inventors: Michael A. Snopko, Rajesh N. Nair, Anthony C. Rodman
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Patent number: 8833061Abstract: A method and device for regenerating an exhaust gas aftertreatment component for filtering soot particles in an engine having a first cylinder group, exhaust gases being guided through an exhaust gas channel and whose fuel/air mixture ratio is set via a fuel metering system, activated via a control unit, by a control loop for setting a lambda value using a signal of a first exhaust gas sensor, in the exhaust gas flow direction upstream from a catalytic converter, having at least another cylinder group, exhaust gases being guided through another exhaust gas channel and whose fuel/air mixture ratio is set via another fuel metering system by another control loop for setting another lambda value based on the signal of another exhaust gas sensor, in the exhaust gas flow direction upstream from a catalytic converter, the separate channels joined together downstream to form a shared channel, having a shared catalytic converter.Type: GrantFiled: April 9, 2012Date of Patent: September 16, 2014Assignee: Robert Bosch GmbHInventors: Klaus Winkler, Thomas Zein
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Publication number: 20140250870Abstract: An exhaust treatment unit treats exhaust gas from an engine of a work vehicle. The exhaust treatment unit includes a diesel particulate filter device, a selective catalytic reduction device, a first support component and a second support component. The diesel particulate filter device treats the exhaust gas. The selective catalytic reduction device treats the exhaust gas. The first support component supports the diesel particulate filter device. The second support component supports the selective catalytic reduction device and the first support component. The first support component is detachable from the second support component.Type: ApplicationFiled: November 19, 2012Publication date: September 11, 2014Inventors: Manabu Himoto, Osamu Nishimura, Tadashi Mori
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Patent number: 8826651Abstract: An exhaust system for an internal combustion engine having a first exhaust tract assigned to a first group of cylinders of the internal combustion engine, and a second exhaust tract assigned to a second group of cylinders of the internal combustion engine, the first exhaust tract and the second exhaust tract being coupled to one another by a connecting line. A common bypass line branches off from the connecting line coupling the exhaust tracts.Type: GrantFiled: July 2, 2010Date of Patent: September 9, 2014Assignee: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Thomas Laube, Erwin Rutschmann
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Publication number: 20140245724Abstract: Provided are an exhaust purification catalyst which purifies an exhaust gas discharged from an internal combustion engine and in which high catalytic activity at a low temperature and high durability at a high temperature are compatible with each other, and an exhaust emission control device for the internal combustion engine in which the exhaust purification catalyst is used. The exhaust purification catalyst is a catalyst in which a noble metal particle is carried on a surface of a silicon carbide particle. The catalyst is a noble-metal-carrying silicon carbide particle (1) in which a noble metal particle (3) is carried on a surface of a silicon carbide particle (2) in a state of being coated with an oxide layer (4).Type: ApplicationFiled: August 24, 2012Publication date: September 4, 2014Applicant: SUMITOMO OSAKA CEMENT CO., LTD.Inventors: Masamichi Tanaka, Nobuhiro Hidaka, Katsunori Hanamura
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Patent number: 8820051Abstract: A vehicle includes a fuel tank, an internal combustion engine, an oxidation catalyst, a regenerable particulate filter in fluid communication with an outlet side of the oxidation catalyst, and a host machine. The host machine calculates an actual hydrocarbon level in the exhaust stream downstream of the particulate filter as a function of an actual energy input value and an actual output value of the oxidation catalyst, and subsequently executes a control action using the actual hydrocarbon level. A method for use aboard the vehicle includes using the host machine to calculate an actual hydrocarbon level in the exhaust stream downstream of the particulate filter, including solving a function of an actual energy input value and an actual energy output value of the oxidation catalyst, and executing a control action aboard the vehicle via the host machine using the actual hydrocarbon level.Type: GrantFiled: August 10, 2010Date of Patent: September 2, 2014Assignee: GM Global Technology Operations LLCInventors: Patrick Barasa, Scot A. Douglas, Jason D. Mullins
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Patent number: 8820050Abstract: Embodiments for reducing ammonia slip are provided. In one example, a method for reduction of ammonia emissions from an engine exhaust gas aftertreatment device with an SCR catalyst comprises determining a concentration of NOx and/or ammonia in the exhaust gas aftertreatment device, comparing a determined value of NOx and/or ammonia concentration with a nominal value for NOx and ammonia, respectively, and if an actual or shortly forecasted ammonia concentration is above the respective nominal value, triggering engine conditions with higher exhaust NOx concentration. In this way, ammonia slip may be reduced without degrading fuel economy.Type: GrantFiled: June 14, 2012Date of Patent: September 2, 2014Assignee: Ford Global Technologies, LLCInventors: Alexey A. Dubkov, Mario Balenovic, Jan Harmsen, Robert Ukropec, Brendan Patrick Carberry
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Patent number: 8820057Abstract: A method and device for raising the temperature of exhaust gas from an engine by increasing parasitic loading on the engine without significantly increasing engine speed. This may be accomplished by increasing a demand on a hydraulic fan powered by a variable displacement hydraulic pump and meeting the demand by adjusting the displacement for the variable displacement hydraulic pump.Type: GrantFiled: March 30, 2011Date of Patent: September 2, 2014Assignee: Deere & CompanyInventors: Andrew J Hageman, Brent A Smith, Nathan J Horstman, Neil V Harber
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Patent number: 8821608Abstract: Inner cases are connected to outer cases through joining flanges which protrude toward outer peripheries of the outer cases. A plurality of combinations each including filters, the inner cases, and the outer cases are provided. Both the joining flanges are sandwiched and fixed between a pair of sandwiching flanges, thereby connecting the plurality of outer cases to each other.Type: GrantFiled: June 30, 2010Date of Patent: September 2, 2014Assignee: Yanmar Co., Ltd.Inventor: Masataka Mitsuda
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Patent number: 8813478Abstract: An exhaust gas treatment system for an internal combustion engine is provided, including an exhaust gas conduit, a flow-through container of absorbent particles, an electrically heated catalyst (“EHC”) device, a selective catalytic reduction (“SCR”) 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 exhaust gas contains oxides of nitrogen (“NOx”) and water. The flow-through container of absorbent particles is in fluid communication with the exhaust gas conduit and configured to receive the exhaust gas. The flow-through container substantially adsorbs the water from the exhaust gas below a threshold temperature. The EHC device is in fluid communication with the exhaust gas conduit and is configured to receive the exhaust gas. The EHC device is located downstream of the flow through container, and is selectively activated to produce heat.Type: GrantFiled: December 15, 2011Date of Patent: August 26, 2014Assignee: GM Global Technology Operations LLCInventors: Eugene V. Gonze, Michael J. Paratore, Jr., Chang H. Kim, Steven J. Schmieg
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Patent number: 8813481Abstract: An exhaust emission control device comprises a selective reduction catalyst for reacting NOx in an exhaust gas with ammonia, means for adding a urea water into the exhaust gas upstream of the catalyst and a cylindrical mixing pipe as a connection between the adding means and the catalyst, an entry end of the mixing pipe being formed with circumferential opening sections and provided with guide fins for guiding the exhaust gas to the opening sections tangentially of the entry end to provide a mixer structure, the adding means being arranged centrally on the entry end of the mixing pipe and directed toward an exit end of the mixing pipe for addition of the urea water into a swirling flow of the exhaust gas caused by the mixer structure. The opening sections are formed along the swirling flow.Type: GrantFiled: December 21, 2010Date of Patent: August 26, 2014Assignees: Hino Motors, Ltd., Isuzu Motors LimitedInventor: Minoru Kowada
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Publication number: 20140234189Abstract: A positive ignition engine is disclosed. The engine comprises an exhaust system comprising a filter for filtering particulate matter from the emitted exhaust gas. The filter comprises a porous substrate having inlet surfaces and outlet surfaces. The porous substrate is coated at least in part with a three-way catalyst washcoat comprising a platinum group metal and a plurality of solid particles. The plurality of solid particles comprises at least one base metal oxide and at least one oxygen storage component which is a mixed oxide or composite oxide comprising cerium. The mixed oxide or composite oxide comprising cerium and/or the at least one base metal oxide has a median particle size (D50) less than 1 ?m. The platinum group metal platinum and rhodium; palladium and rhodium; platinum, palladium and rhodium; palladium only; or rhodium only. A process for treating exhaust gas using the filter is also disclosed.Type: ApplicationFiled: February 17, 2014Publication date: August 21, 2014Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: Lucy CLOWES, Oliver DESTECROIX, John Benjamin GOODWIN, David GREENWELL, Michael Anthony HOWARD, Christopher Charles John SCOTNEY
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Patent number: 8806857Abstract: A method and device for removing a minor portion of carbon dioxide from the exhaust gases of a motor vehicle, wherein less than 20 percent of the carbon dioxide is removed, and further wherein exhaust flow is not impeded such that there is no significant reduction in efficiency of the motor itself.Type: GrantFiled: January 19, 2011Date of Patent: August 19, 2014Inventors: Mark D. Shaw, J. Tad Heyman
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Publication number: 20140223891Abstract: A low emissions 2-stroke natural gas fueled engine includes at least one cylinder with an exhaust port in communication with a silencer-catalytic converter unit. The unit has first and second volumes in communication with each other. The first volume damps spurious exhaust pressure excursions and removes particulates in the exhaust. The second volume houses an oxidation catalyst for treating exhaust to reduce exhaust emissions. The engine oil has at most 10 ppm zinc content to reduce metal poisons contained in the exhaust prior to contact with the oxidation catalyst. The engine oil preferably has a very low ash content to minimize sulfur combustion components in the exhaust to reduce masking of the oxidation catalyst. The first volume preferably has a pressure relief valve set to relieve at a pressure greater than the maximum normal operating pressure of the engine to avoid excessive pressure excursions of the engine exhaust from damaging the oxidation catalyst.Type: ApplicationFiled: February 10, 2014Publication date: August 14, 2014Applicant: Cameron International CorporationInventors: Bruce M. Chrisman, Thomas J. Hurley
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Publication number: 20140223902Abstract: An internal combustion engine comprising a turbocharger wherein a bypass line in an exhaust gas discharge system delivers an aqueous urea reductant to an at least one SCR catalyst and a method to maintain the reductant at a desired temperature to maximize its conversion to ammonia and optimize the reduction of NOx in the SCR.Type: ApplicationFiled: February 11, 2014Publication date: August 14, 2014Applicant: Ford Global Technologies, LLCInventor: Yasser Mohamed sayed Yacoub
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Patent number: 8800268Abstract: Exhaust treatment filters, systems, and methods are disclosed. According to one or more embodiments, a particulate filter is zone coated with an oxidation catalyst and is used in an emission treatment system or method including a NOx reducing catalyst and an optional NH3 destruction catalyst.Type: GrantFiled: November 29, 2007Date of Patent: August 12, 2014Assignee: BASF CorporationInventors: Kenneth Voss, Ingemar Gottberg, Steve Truesdail, Marius Vaarkamp
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Patent number: 8800274Abstract: An internal combustion engine is configured to operate in a compression-ignition combustion mode and includes an exhaust aftertreatment system having an ammonia-selective catalytic reduction device. A method for operating the engine includes determining a present engine NOx generation rate, determining a NOx reduction rate of the ammonia-selective catalytic reduction device, determining an ammonia slip rate from the ammonia-selective catalytic reduction device corresponding to the NOx reduction rate of the ammonia-selective catalytic reduction device and the present engine NOx generation rate, and controlling engine operation to adjust the present engine NOx generation rate in response to the ammonia slip rate from the ammonia-selective catalytic reduction device.Type: GrantFiled: May 12, 2011Date of Patent: August 12, 2014Assignee: GM Global Technology Operations LLCInventors: Min Sun, Jean-Yves Lavallee
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Publication number: 20140216016Abstract: A wall flow type particulate filter is arranged inside the exhaust passage of an internal combustion engine where combustion is performed under an excess of oxygen. The particulate filter carries a solid acid. The solid acid has an acid strength which is higher than the acid strength of sulfurous acid and lower than the acid strength of sulfuric acid. To remove the ash from the particulate filter, ash atomization processing for rendering the state of the particulate filter a state where the exhaust gas which flows into the particulate filter is lowered in concentration of oxygen and the particulate filter is raised in temperature is temporarily performed.Type: ApplicationFiled: June 29, 2012Publication date: August 7, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroshi Otsuki, Shigeki Nakayama, Hiromasa Nishioka, Katsuhiko Oshikawa, Yoshihisa Tsukamoto, Junichi Matsuo, Yuichi Sobue, Daichi Imai, Kou Sugawara
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Publication number: 20140216017Abstract: A control apparatus for an internal combustion engine in the present invention includes a DPF installed in an exhaust passage and a DOC installed in the exhaust passage on the upstream side of the DPF. The control apparatus changes an engine control parameter so as to facilitate NO2-based regeneration when it is determined that an operating state in which the NO2-based regeneration speed is higher than a predetermined threshold value is established during operation of the internal combustion engine.Type: ApplicationFiled: November 25, 2011Publication date: August 7, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Akira Shirai
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Patent number: 8793984Abstract: Termination of regeneration of a particulate filter may be based on a variable percent threshold of stored particulate, where the percent threshold of stored particulate depends on a current soot burn rate. In one example approach, a method for controlling regeneration of a diesel particulate filter comprises: terminating regeneration based on a particulate burning rate; wherein the particulate burning rate is based on operating conditions of the diesel particulate filter; the operating conditions including an amount of stored particulate in the diesel particulate filter and a temperature of the diesel particulate filter.Type: GrantFiled: June 18, 2013Date of Patent: August 5, 2014Assignee: Ford Global Technologies, LLCInventors: Kevin Chen, Christopher Oberski, Norman Hiam Opolsky, Peter Mitchell Lyon
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Patent number: 8793982Abstract: The present application generally relates to a diesel engine and, more particularly, to a control system and method for an exhaust aftertreatment system for a locomotive diesel engine. In accordance with an embodiment of the present system, a two-stroke uniflow scavenged diesel engine system including an exhaust aftertreatment system is described for reducing NOX emissions and achieving desired fuel economy. More specifically, a system and method for controlling the exhaust aftertreatment system is provided. The present system being adapted to monitor and control select components of the exhaust aftertreatment system. Specifically, the control system may be adapted to control select components of an exhaust aftertreatment system to adaptively regulate filtration based on various operating conditions of the locomotive.Type: GrantFiled: June 30, 2011Date of Patent: August 5, 2014Assignee: Electro-Motive Diesel Inc.Inventors: Ajay Patel, Gary R. Svihla
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Patent number: 8793977Abstract: Systems and methods are provided for controlling the amount and timing of nitrogen oxides reductant injected during a given injection cycle into an exhaust system of a vehicle as part of a selective catalytic reduction system. The amount of reductant injected is determined by at least one computational model that accounts for the growth of liquid and/or solid reductant film growth on the interior of the exhaust system. The model determines reductant injection characteristics (e.g., amount, timing, etc.) that reduce and/or eliminate reductant films on the interior of the exhaust system. Exemplary inputs into the model include exhaust temperature, exhaust flow, and the amount of reductant injected in a previous injection cycle.Type: GrantFiled: July 9, 2010Date of Patent: August 5, 2014Assignee: PACCAR IncInventors: Nathan J. Kaemingk, Michael Gerty
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Patent number: 8789363Abstract: An emission abatement assembly includes a fuel-fired burner having a combustion chamber and a particulate filter positioned downstream of the fuel-fired burner. A mixing baffle is positioned between the fuel-fired burner and the particulate filter.Type: GrantFiled: June 13, 2007Date of Patent: July 29, 2014Assignee: Faurecia Emissions Control Technologies, USA, LLCInventors: Robert J. Iverson, John B. Abel, Navin Khadiya, John P. Nohl, Geoff Morgan, Wilbur H. Crawley
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Publication number: 20140202136Abstract: The invention relates to an exhaust-gas treatment device for processing exhaust gas from a combustion aggregate, especially a diesel engine. Moreover, the present invention relates to a method for processing exhaust gas from a combustion aggregate by means of selective catalytic reaction, and it also relates to a motor vehicle in which the method according to the invention is implemented or which has the exhaust-gas treatment device according to the invention. It is provided that the exhaust-gas treatment device comprises an exhaust-gas system and, arranged in it, an oxidation catalyst, a reduction catalyst for selective catalytic reduction, and a particle filter, whereby the oxidation catalyst is arranged upstream from the reduction catalyst and the reduction catalyst is arranged upstream from the particle filter.Type: ApplicationFiled: August 8, 2012Publication date: July 24, 2014Inventor: Jörg Sprute
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Patent number: 8784539Abstract: The invention relates to diesel soot particulate filter cartridge having a central filter cartridge axis. The filter cartridge has a radial flow. The filter cartridge comprises a porous structure. The porous structure is coiled around the central filter cartridge axis. The porous structure comprises non-sintered metal fibers, said fibers having a roughness being higher than 1.7. The invention further relates to a method of manufacturing a diesel soot particulate filter cartridge. Furthermore the invention relates to a multicartridge diesel soot particulate filter. The flow through the multicartridge diesel soot particulate filter is axial while the flow through the filter cartridges is radial.Type: GrantFiled: June 23, 2010Date of Patent: July 22, 2014Assignee: NV Bekaert SAInventors: Inge Schildermans, Johan Vandamme, Frank Verschaeve
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Patent number: 8783022Abstract: An exhaust aftertreatment system for diesel engines includes a filtration station, a NOx reduction station, a temperature sensor, a pressure data generator, a NOx sensor, a reductant dispenser, and a controller. The filtration station filters particulate material from the exhaust. The NOx reduction station reduces NOx concentration in the exhaust. The temperature sensor generates first data that is representative of a temperature of the exhaust. The pressure data generator generates second data that is indicative of a pressure differential across a control volume that is located at the NOx reduction station. The control volume includes at least one catalyzed substrate. The NOx sensor generates third data that is representative of the NOx concentration in the exhaust. The reductant dispenser dispenses reductant into the exhaust. The controller controls a dosing rate of the reductant dispenser. The controller uses the first, second, and third data to determine the dosing rate.Type: GrantFiled: July 29, 2010Date of Patent: July 22, 2014Assignee: Donaldson Company, Inc.Inventors: Henry Joseph Drasner, III, Andrew Alan Gilb, Paul Anthony Way
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Patent number: 8783021Abstract: A method for operating an internal combustion engine is proposed, in whose exhaust gas zone a particle filter is disposed, which is cyclically loaded with particles and thermally regenerated, as well as an apparatus for the implementation of the method, which prevents thermal overload of the particle filter after turning off the internal combustion engine. A test is made when the internal combustion engine is turned off to determine whether an exothermal reaction takes place. Provided that an exothermal reaction takes place in the particle filter, a butterfly valve is closed, which prevents exhaust gas flow through the particle filter and, if the circumstances arise, a resulting oxygenation ingress in the particle filter.Type: GrantFiled: March 4, 2009Date of Patent: July 22, 2014Assignee: Robert Bosch GmbHInventors: Christian Post, Andreas Nagel