Entries |
Document | Title | Date |
20080196396 | Catalyst and method for purification of diesel engine exhaust gas - The invention provides a catalyst for catalytically reducing nitrogen oxides in diesel engine exhaust gas by use of unburnt carbon contained in the diesel engine exhaust gas as a reducing agent, the catalyst comprising: | 08-21-2008 |
20080236148 | Internal combustion engine apparatus, control method thereof, and vehicle - When a misfire occurs in any cylinder of an engine, an exhaust switching valve is closed to pass exhaust gas through an HC adsorbing section to a catalytic purifying section having a three-way catalyst (step S | 10-02-2008 |
20080250775 | Particulate Trap with Coated Fiber Layer and Exhaust System Having the Particulate Trap - An open particulate trap for purifying exhaust gases from mobile internal combustion engines includes at least one at least partially structured metal foil and at least one high-temperature-resistant fiber layer having metal fibers defining the open particulate trap for purifying exhaust gases from mobile internal combustion engines. The fiber layer has a section and, at least in the section, a catalytically active coating being an SCR catalyst. An exhaust system of an automobile internal combustion engine includes an exhaust pipe defining a flow direction and at least the following components disposed in succession in the flow direction: a reducing-agent feed for supplying liquid urea and the particulate trap. | 10-16-2008 |
20080282683 | DEVICE FOR THE PURIFICATION OF EXHAUST GAS - As a device for the purification of exhaust gas, a three-way catalyst A purifying hydrocarbon, carbon monoxide and nitrogen oxide in the vicinity of theoretical air-fuel ratio is disposed at an upstream side of the exhaust gas and an adsorption catalyst B provided with zeolite effective for the adsorption of hydrocarbon is disposed at a downstream side of the exhaust gas. | 11-20-2008 |
20080302091 | Exhaust system for an internal combustion engine provided with an exhaust gas recirculation circuit - An exhaust system for an internal combustion engine, which is provided with a feeding pipe of fresh air to an intake manifold and with a turbocharger arranged along the feeding pipe; the exhaust system displays: an emission pipe for releasing the exhaust gases produced by the internal combustion engine into the atmosphere; at least one gas treatment device, which is arranged along the emission pipe and consists of an oxidising catalyser and an anti-particulate filter; and a recirculation circuit, which displays a recirculation pipe which is regulated by a recirculation valve and connects the emission pipe downstream of the treatment device to the intake pipe upstream of a compressor of the turbocharger to introduce into the intake pipe a certain amount of exhaust gases present in the emission pipe; along the recirculation pipe a filter consisting of a metallic mesh arranged to close the recirculation pipe is arranged. | 12-11-2008 |
20080307777 | Exhaust Gas After-Treatment Apparatus - In an exhaust gas after-treatment apparatus ( | 12-18-2008 |
20080314032 | Segmented Particulate Filter For An Engine Exhaust Stream - A particulate filter is fluidly connected to and disposed downstream from a diesel engine exhaust stream outlet. The filter has a plurality of filter segments that have differing physical properties or structural characteristics such that the engine exhaust stream to fuel stream ratio is maintained substantially consistent among segments during their regeneration. A method for regenerating a segmented filter comprises maintaining the engine exhaust stream to fuel stream ratio substantially consistent among segments during their regeneration. | 12-25-2008 |
20080314033 | Treatment of diesel engine exhaust - A diesel exhaust treatment system for treating exhaust gas from a diesel engine comprises at least one diesel particulate filter, at least one diesel exhaust fluid mixing chamber and at least one selective catalytic reduction converter (SCR). In one desirable embodiment, plural diesel particulate filters are arranged in parallel and plural SCRs are arranged in parallel. These components including the diesel exhaust fluid mixing chamber can be included in a common housing with the exhaust flow reversing directions a plurality of times as it passes through the treatment system from an exhaust inlet to an exhaust outlet. The housing can be coupled to one vehicle frame rail with most of the housing and components contained therein positioned outside the outer surface of the one frame rail. | 12-25-2008 |
20090031711 | Exhaust gas system, especially for an internal combustion engine of a motor vehicle - In an exhaust gas system for an internal combustion engine, particularly of a motor vehicle, wherein the exhaust gas system comprises a nitrogen oxide reducing converter arranged in an exhaust gas line of the internal combustion engine, an exhaust gas cleaning device arranged upstream of the nitrogen oxide reducing converter and a reducing agent feed device for feeding a reducing agent into the exhaust gas of the internal combustion engine upstream of the nitrogen oxide reducing converter, a bypass line is provided which branches off from the exhaust gas line upstream of the exhaust gas cleaning device and rejoins the exhaust gas line at an entry point downstream of the exhaust gas cleaning device and upstream of the nitrogen oxide reducing converter. | 02-05-2009 |
20090049830 | SECONDARY AIR SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE - An air cleaner has: a main body that is provided with an air introduction part and an air lead-out part; a filter element is provided within the main body and is positioned between the air introduction part and the air lead-out part; and a secondary air discharge pipe that is provided in the main body and positioned apart from the air introduction port in relation to the direction of air flow within the main body. | 02-26-2009 |
20090056318 | Method and device for controlling exhaust emission from internal combustion engine - The present invention provides a purification method excellent also in removing particulates or the like from exhaust gas from an internal combustion engine, in particular, a diesel engine or the like. A purification method for exhaust gas from an internal combustion engine, wherein said purification method uses an exhaust gas purification apparatus comprising an oxidation zone installed with an oxidation catalyst supporting both platinum and palladium, and a filtering zone installed with a particulate filter, along exhaust gas flow at the exhaust gas passage of an internal combustion engine, characterized in that hydrocarbon-based liquid is supplied to the inflow side of the exhaust gas of said oxidation zone at the time when 2 to 10 g of particulates per 1 litter of said particulate filter are caught, to raise temperature of said exhaust gas up to equal to or higher than 550° C. by said oxidation catalyst so as to make the residue of said particulate filter combusted; and an apparatus thereof. | 03-05-2009 |
20090094964 | EXHAUST PURIFICATION APPARATUS FOR ENGINE - An exhaust purification apparatus for an engine comprises an upstream casing that has a cylindrical shape and accommodates a particulate filter; an exhaust gas outlet that is formed in a side wall of the upstream casing and discharges the exhaust gas that has passed through the particulate filter; a urea-water injector that is fixed to the upstream casing located in a position opposite to the exhaust gas outlet and injects urea-water toward the exhaust gas outlet; and a downstream casing that accommodates an ammonia selective reduction-type NOx catalyst into which the exhaust gas discharged from the exhaust gas outlet flows. | 04-16-2009 |
20090113879 | Exhaust gas purification apparatus - An exhaust gas purification apparatus | 05-07-2009 |
20090120074 | EXHAUST PURIFYING SYSTEM FOR INTERNAL COMBUSTION ENGINE - There is provided an exhaust purifying system for an internal combustion engine which can achieve a function of a catalyst without deteriorating a function of ozone at the time of oxidizing and removing PM by using the ozone. The exhaust purifying system for the internal combustion engine comprises a wall-flow type particulate filter ( | 05-14-2009 |
20090120075 | EXHAUST GAS PURIFYING SYSTEM - An exhaust gas purifying system removes particulate matter from exhaust gas from an engine through an exhaust passage. The system includes a filter, a reforming catalyst, an injector, and a heat transfer member. The filter is provided in the exhaust passage and collects the particulate matter in the exhaust gas. The reforming catalyst is provided in the exhaust passage and generates the heat of reaction by reforming fuel. The injector supplies the fuel to the reforming catalyst. The heat transfer member is in directly contact with the filter and the reforming catalyst to transfer the heat therebetween. | 05-14-2009 |
20090126353 | Oxidation Catalyst for NH3 and an Apparatus for Treating Slipped or Scripped NH3 - Disclosed herein are an ammonia oxidation catalyst and a system for treating slipped ammonia or waste ammonia using the oxidation catalyst. More specifically, disclosed are an ammonia oxidation catalyst comprising either Cu-containing zeolite impregnated with platinum or Cu-containing alumina impregnated with platinum, which has improved low-temperature activity to oxidize ammonia generated in a mobile source or fixed source system and is used to inhibit the formation of nitrogen oxides, as well as a system for treating ammonia contained in vehicle exhaust gas, a chemical reactor system and an environmental device and system, which include the oxidation catalyst. | 05-21-2009 |
20090158719 | Emission Treatment System - An emission treatment system and method for remediating the nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams are described. The emission treatment system has an oxidation catalyst upstream of a soot filter upstream from a NOx reducing catalyst. | 06-25-2009 |
20090158720 | Sliding Seat And Exhaust Gas Treatment Facility - The present invention relates to a sliding seat for mounting a thermally impacted pipe on a structural part so as to be axially movable, in particular in an exhaust gas system of a combustion engine, with a bearing material which is radially supported against pipe on the outside thereof and which is fixed on structural part via a retaining pipe fastened on structural part. | 06-25-2009 |
20090158721 | Sliding Fit, Pipe Arrangement And Exhaust Gas Treatment Device - The present invention relates to a sliding fit for the axially movable bearing of a thermally loaded pipe on a component, in particular on an exhaust system of an internal combustion engine, having a wire mesh which is radially supported on the outside of the pipe and is secured directly or indirectly to the component. | 06-25-2009 |
20090158722 | EMISSION CONTROL SYSTEM - An emission control system, includes: an exhaust pipe portion, adapted to guide exhaust gas from an engine to outside; a catalyst, accommodated in the exhaust pipe portion; an additive injection valve, provided at the exhaust pipe portion located at upstream side of the catalyst, and configured to inject additives to be supplied to the catalyst toward a flow of the exhaust gas in the exhaust pipe portion. The exhaust pipe portion has a flow path section located at upstream side of the catalyst, which intersects an injection flow of the additives injected by the additive injection valve, and the flow path section is made to have substantially the same shape as an injection region of the injection flow which confronts the exhaust gas. | 06-25-2009 |
20090193796 | GASOLINE ENGINE EMISSIONS TREATMENT SYSTEMS HAVING PARTICULATE TRAPS - Provided are exhaust systems and components suitable for use in conjunction with gasoline direct injection (GDI) engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate trap are provided. An exemplary particulate trap is a soot filter. Additional treatment components can be added downstream of the particulate trap, including NO | 08-06-2009 |
20090199546 | Device For Reducing Dibenzodioxin Emissions, Dibenzofuran Emissions And Particle Emissions - A transition metal-containing catalyzer is arranged on a particle filter installed in the exhaust gas line of an internal combustion engine and cannot be separated therefrom without being destroyed. To reduce emissions, at least one molecular sieve which retains polychlorinated dibenzodioxins and polychlorinated dibenzofurans is arranged between the transition metal-containing catalyzer and the exhaust gas outlet. Further, the input side of the molecular sieve and/or the output side of the catalyzer has an oxidation activity for hydrocarbons, polychlorinated dibenzodioxins and polychlorinated dibenzofurans upstream of the molecular sieve. | 08-13-2009 |
20090205325 | Compact Exhaust Gas Aftertreatment System - The invention is directed to a device for converting exhaust gas constituents of an internal combustion engine by means of at least one catalyzer and/or particle filter and/or particle separator and for compensating relative movements between the internal combustion engine and the exhaust gas train and/or relative movements between different parts of the exhaust gas train by means of at least one compensator permitting relative movements. The at least one catalyzer for converting exhaust gas constituents and/or the at least one particle filter and/or the at least one particle separator are/is arranged inside the compensator and or inside the part of the exhaust gas train that is permanently connected to the compensator. The outer diameter of the catalyzer and/or of the particle filter and/or of the particle separator is less than or equal to the inner diameter of the compensator. | 08-20-2009 |
20090217650 | Device for introducing a liquid substance into the exhaust gas of an internal combustion engine - A device for introducing a liquid reducing agent into the exhaust gas of an internal combustion engine includes an injection device and a retaining device. By means of the latter, the injection device is retained at least indirectly in the vicinity of an exhaust gas conduit and a cooling device cools the retaining device. An intermediate portion is disposed between the retaining device and the injection device, and this portion at least regionally influences the heat flow between the injection device and the retaining device. | 09-03-2009 |
20090235652 | EXHAUST GAS PURIFICATION APPARATUS - An exhaust gas purification apparatus includes a honeycomb structure which has an introduction end face and an exhaust end face opposite to the introduction end face in the longitudinal direction of the honeycomb structure. A casing houses the honeycomb structure and has an introduction casing end face connected to an introduction pipe and an exhaust casing end face connected to an exhaust pipe. The introduction end face of the honeycomb structure faces the introduction casing end face. The exhaust end face of the honeycomb structure faces the exhaust casing end face. A holding sealing material is disposed between the honeycomb structure and the casing. A stopping member has a plurality of openings and covers the exhaust end face. | 09-24-2009 |
20090241523 | LUBRICANT COMPOSITIONS COMPRISING COLLOIDAL DISPERSIONS OF RARE EARTH COMPOUNDS AND CATALYTIC COMBUSTION OF ENGINE EXHAUST SOOTS THEREWITH - Engines equipped with an exhaust line fitted with a particulate filter, in which the particulates contained in the exhaust gas are trapped on such filter, and wherein the trapped particulates are periodically burned off, are operated by improvedly catalyzing the combustion of said particles utilizing a composition containing mixture of a lubricating oil and a colloidal dispersion as the engine-lubricating composition, which dispersion includes particles of at least one compound of at least one rare earth and an amphiphilic agent. | 10-01-2009 |
20090249772 | EXHAUST GAS PURIFICATION DEVICE - An exhaust gas purification device is provided. The device includes: in an exhaust gas passage for a combustion exhaust gas containing a nitrogen oxide, a hydrocarbon, and an oxygen in a larger amount than a theoretical reaction amount with respect to the hydrocarbon to flow therethrough, in order from upstream, a first catalyst part for selectively reducing a nitrogen oxide; a plasma discharge part for generating a plasma; a second catalyst part for selectively reducing a nitrogen oxide; and a purifying catalyst part for purifying a reducing agent. | 10-08-2009 |
20090255235 | Sulfur-Resistant Exhaust Gas Aftertreatment System For The Oxidation Of NO - An arrangement for aftertreatment of exhaust gas for lean-burn internal combustion engines such as diesel engines and Otto engines with direct injection includes a catalyzer for oxidation of nitrogen monoxide and a molecular sieve which keeps sulfur dioxide away from the catalyzer arranged upstream of the catalyzer. | 10-15-2009 |
20090255236 | LOW TEMPERATURE HYDROCARBON SCR - A method of reducing nitrogen oxides (NO | 10-15-2009 |
20090272106 | EXHAUST GAS TREATMENT UNIT - The present invention relates to an exhaust gas treatment unit for an exhaust system of a combustion engine, in particular of a motor vehicle, includes a housing, a plurality of exhaust gas treatment elements, which are arranged in the housing and through which a parallel flow is possible. The unit further includes an outlet nozzle, which penetrates a side face of the housing, and an outlet space disposed in the housing, whereby the outlet of at least one of the exhaust gas treatment elements opens into the outlet space. The rigidity and/or effectiveness of the exhaust gas treatment unit can be improved by means of a funnel body disposed in the outlet space, and comprising a funnel surface which is permeable to exhaust gas. The funnel body connects an outlet end of one of the exhaust gas treatment elements with the outlet nozzle. | 11-05-2009 |
20090277161 | Device For Supplying A Reducing Agent Solution Into An Exhaust System And Corresponding Exhaust System, Method and Vehicle - A device for supplying reducing agent solution into an exhaust system, includes a reservoir for reducing agent solution and a delivery device for delivering reducing agent solution from the reservoir to a reducing agent infeed configuration. A delivery height to be overcome between the reservoir and the reducing agent infeed configuration is less than 1.5 meters and the delivery device includes a diaphragm pump. The device permits the dosed metering of reducing agent solution into an exhaust system of an internal combustion engine regardless of prevailing boundary conditions, in particular regardless of the position of the device, which is for example influenced by a position of a corresponding automobile. In particular, it is thus also possible to ensure reliable metering of reducing agent solution into the exhaust system even when the automobile or motor vehicle is traveling over grades. A corresponding exhaust system, method and utility vehicle are also provided. | 11-12-2009 |
20090277162 | INJECTION METHOD AND DEVICE FOR INJECTING A REDUCING SUBSTANCE INTO AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE - An injection method and device for injecting a reducing liquid additive into an exhaust system of an internal combustion engine; the injection device in provided with: a tank containing the reducing liquid additive; a reversible pump connected to the tank; an injector which is connected to the pump by means of a feeding pipe and is adapted to inject the reducing additive into the exhaust pipe; and a vent valve which is arranged along the feeding pipe upstream of the injector to put the feeding pipe into communication with the atmosphere. | 11-12-2009 |
20090288400 | Exhaust Gas Purifying Device for Diesel Engine - The present invention relates to an exhaust gas purifying device for a diesel engine, which purifies efficiently Nitrogen Oxides (NOx) and Particulate Matters (PM) contained in exhaust gases of the diesel engine, particularly provides an exhaust gas purifying device disposed in an exhaust passage of a diesel engine, wherein a catalyst part for reducing Nitrogen Oxides and a filter part for removing Particulate Matter are provided sequentially from an upstream for a flow of the exhaust gas and a diesel fuel injector is mounted at a front of the Nitrogen Oxide reduction catalyst part. | 11-26-2009 |
20090301069 | Exhaust Gas Cleaning Component for Cleaning an Internal Combustion Engine Exhaust Gas - A component for cleaning the exhaust gas in an internal combustion engine has a carrier body with a plurality of flow ducts for the exhaust gas. At least some of the walls ( | 12-10-2009 |
20090313977 | APPARATUS AND METHOD TO CONTROL ENGINE CRANKCASE EMISSIONS - An apparatus for reducing crankcase emissions generated by an engine is described. The apparatus generally includes a separator that removes particulate matter from the crankcase emissions and a treatment component that removes odor and gases from the crankcase emissions. The apparatus is configured where the treatment component is disposed downstream of the separator, the separator first removes particulate matter from the crankcase emissions and the treatment component then removes odor and certain gases from the crankcase emissions. | 12-24-2009 |
20090313978 | Particle Separator and Method for Removing Particles from an Exhaust Gas Stream of an Internal Combustion Engine - A particle separator and method for removing particles from an exhaust gas stream of an internal combustion engine. A prescribed number of flow cells are formed in the particle separator. The exhaust gas stream flows into and/or out of the flow cells via, as viewed in a main direction of flow of the exhaust gas stream, side wall regions of the flow cells. At least one storage space is formed in the flow cells for storing particles removed from the exhaust gas stream, which flows through at least portions of the particle separator. | 12-24-2009 |
20090313979 | EXHAUST EMISSION CONTROL DEVICE - An exhaust emission control device has a particulate filter | 12-24-2009 |
20090320456 | APPARATUS FOR TREATING DIESEL EXHAUST GASES - The invention relates to an apparatus for treating diesel exhaust gases including a diesel particulate filter. The invention also relates to a method for manufacturing and using such an apparatus. A particulate filter (DFP) according to the invention has a coating, there is used a sol having the average particle size of the particles below 100 nm, preferably below 50 nm and that a particulate oxidation and that a particulate oxidation catalyst (POC) has been connected in front of the particulate filter in relation to the flow direction of the exhaust gas, which includes at least partially open channels for leading the exhaust gas. | 12-31-2009 |
20100011751 | EXHAUST GAS SYSTEM - An exhaust gas system for combustion engines is provided having at least one exhaust gas duct, in particular an exhaust pipe, and having an exhaust gas treatment device such as an oxidation catalyst, an SCR catalyst or a diesel particulate filter downstream of the exhaust gas duct, wherein, to improve the efficiency of downstream gas treatment devices, at least one secondary flow duct, in particular a secondary flow pipe, is provided in the exhaust gas duct with a cross-section reduced with respect to the exhaust gas duct which imparts coerced guidance of some of the exhaust gas flow differing from the actual exhaust gas flow. | 01-21-2010 |
20100037600 | Particle Separator, Especially a Particle Filter, for the Separation of Particles from the Exhaust Gas Stream of an Internal Combustion Engine - A particle separator for the separation of particles from the exhaust gas stream of an internal combustion engine. The particle separator includes different heat transfer zones arranged at least in the main flow direction of an exhaust gas stream through the particle separator, different, that is, with respect to heat storage capacity and/or thermal conductivity and/or the heat-transfer properties from the exhaust gas stream to the particle separator. Each of these different zones makes it possible for a precisely defined amount of heat to be transferred from the exhaust gas stream to the individually assigned sections of the particle separator. | 02-18-2010 |
20100058744 | Optimization of Soot Distribution in a Diesel Particulate Filter - A diesel particulate filter (DPF) configured to separate a particulate from an engine exhaust is provided. The DPF comprises a downstream filtration stage including a plurality of downstream channels, an upstream filtration stage disposed upstream of and in fluidic communication with the downstream filtration stage, and including a plurality of upstream channels, and a shell at least partly enclosing the downstream filtration stage and the upstream filtration stage, the shell including an inlet configured to conduct the engine exhaust to the upstream filtration stage and an outlet configured to release the engine exhaust from the downstream filtration stage. The plurality of upstream channels may include a plurality of open upstream channels, the arrangement of which disperses the particulate more evenly over the plurality of downstream channels, as more flow is directed away from the major axis of the filter. In this way, during regeneration, it is possible to reduce one or both of longitudinal and radial thermal gradients, and thereby improve structural integrity of the filter. | 03-11-2010 |
20100058745 | Exhaust Gas Purification Device - An exhaust gas purification device that includes a catalytic particulate filter having at least an exhaust gas channel, the exhaust gas channel may include a first channel and a second channel being laterally coupled each other and fluidly communicating therebetween, wherein the exhaust gas is inlet through inlet opening of the first channel and outlet through lower portion of the first channel and/or outlet opening of the second channel, and wherein a first coating layer is formed on an interior surface of the first channel in a longitudinal direction thereof substantially from the inlet opening in a first predetermined length, the first coating layer being coated with a catalyst, and a second coating layer is formed on an interior surface of the second channel in a longitudinal direction thereof substantially from the outlet opening in a second predetermined length, the second coating layer being coated with the catalyst. | 03-11-2010 |
20100058746 | CATALYTIC ACTIVATED DIESEL PARTICLE FILTER WITH AMMONIA TRAP EFFECT - A catalytically active diesel particulate filter with ammonia trap action is presented, which, in addition to an oxidation-active coating ( | 03-11-2010 |
20100083642 | Exhaust gas purification device, manufacturing method thereof, and manufacturing device thereof - The present invention relates to an exhaust gas purification apparatus of a vehicle, a manufacturing method thereof, and a manufacturing device thereof. The exhaust gas purification apparatus that includes a filter in which a plurality of channels are formed therein such that exhaust gas exhausted from a combustion chamber can pass therethrough to trap pollutants included in the exhaust gas, may include a first plug that plugs an inlet of at least one channel, and a second plug that plugs an outlet of at least one channel, wherein the first plug is inserted in a predetermined distance from the inlet of the at least one channel toward an outlet direction thereof at a front surface of the at least one channel. | 04-08-2010 |
20100083643 | EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE - There is provided an exhaust gas purification apparatus for an internal combustion engine which can make the exhaust gas in which a reducing agent is diffused uniformly over the entirety flow into an NO | 04-08-2010 |
20100101219 | EXHAUST SYSTEM FOR A VEHICLE - An exhaust system, in particular for a vehicle with a diesel engine, has a first insert through which exhaust gas flows, a second insert through which exhaust gas flows and which is arranged downstream of the first insert in the flow direction, and an injection device arranged between the first and second inserts for injecting a fluid. A swirling element is provided in the flow path of the exhaust gas downstream of the first insert in the flow direction. | 04-29-2010 |
20100107613 | Black Exhaust Purification Apparatus For Diesel Engine - It's an object of the present invention to provide a black smoke exhaust purification apparatus capable of equalizing temperature of a particulate filter and facilitating maintenance thereof. The black smoke exhaust purification apparatus ( | 05-06-2010 |
20100115930 | EXHAUST AFTER TREATMENT SYSTEM - A selective catalytic reduction system for reducing oxides of nitrogen in the exhaust gas flow of an internal combustion engine is disclosed. The system has a ceramic monolith disposed within said exhaust gas flow and includes exhaust flow passages extending therethrough. A high temperature selective catalytic reduction catalyst composition is applied to an inlet portion of the exhaust flow passages and a low temperature selective catalytic reduction catalyst composition applied to an outlet portion of the exhaust flow passages. The high and the low temperature catalytic reduction catalysts are operable to reduce oxides of nitrogen at high load and low load operation of the internal combustion engine. | 05-13-2010 |
20100126150 | Diesel Oxidation Catalyst and Exhaust System Provided with the Same - A diesel oxidation catalyst mounted on an exhaust pipe that exhausts an exhaust gas generated in an engine to the exterior may include a first portion having a hydrocarbon trap (HC trap) coated thereon, the HC trap absorbing or releasing a hydrocarbon (HC) depending on whether or not a predetermined condition is satisfied, and a second portion having an oxidation catalyst coated thereon, the oxidation catalyst oxidizing the hydrocarbon (HC) and a carbon monoxide (CO) in the exhaust gas, wherein the second portion performs oxidation reaction with the HC released from the first portion and releases sulphur absorbed at the oxidation catalyst by using oxidation heat generated in the oxidation reaction thereof. | 05-27-2010 |
20100126151 | EXHAUST GAS AFTER TREATMENT SYSTEM (EATS) - An exhaust gas after treatment system includes a diesel particulate filter unit arranged downstream of a diesel engine, a NO2 reduction catalyst arranged downstream of said diesel particulate filter, a selective catalytic reduction (SCR) arrangement arranged downstream of said NO2 reduction catalyst, a first injector for feeding reducing agent into the exhaust gas arranged downstream said particulate filter and upstream said NO2 reduction catalyst, a second injector for feeding reducing agent into the exhaust gas arranged downstream said NO2 reduction catalyst and upstream said selective catalytic reduction (SCR) arrangement. An exhaust gas after treatment method is also provided. | 05-27-2010 |
20100126152 | METAL SHEET HAVING A MICROSTRUCTURE RELIEVED OF NOTCHING, CARRIER BODY HAVING A PLURALITY OF SHEETS, AND EXHAUST SYSTEM HAVING THE CARRIER BODY - A metal sheet having a microstructure, a carrier body having a plurality of sheets, and an exhaust system having the carrier body, are distinguished by a particularly long useful life in an automobile. Moreover, it is possible to bring about flow profiles coordinated exactly with the respective fields of use, so that a particularly efficient or extremely adaptable carrier body for purifying the exhaust gas of automobiles is provided. | 05-27-2010 |
20100132342 | Exhaust Aftertreatment System - An apparatus for treating engine exhaust gas includes comprising an exhaust conduit for leading exhaust gases from an engine to an outlet, a particulate filter connected in the exhaust conduit to receive exhaust gas, a heat source connected in the exhaust conduit upstream of the particulate filter, and, a heat exchanger connected to receive exhaust gas exiting the particulate filter and arranged to heat a portion of the exhaust conduit upstream of the heat source and particulate filter. Heating the exhaust gases prior to entry into the particulate filter helps ensure oxidation of the trapped particulate matter. | 06-03-2010 |
20100139257 | SYSTEM AND METHOD FOR TREATING EXHAUST GASES - Systems and methods for treating exhaust gases are described. The disclosed systems and/or methods for treating exhaust gases could be used with any power plant, engine, hydrocarbon burning system, other NO | 06-10-2010 |
20100154392 | Adjusting nitrogen oxide ratios in exhaust gas - A method of adjusting a ratio of NO to NO | 06-24-2010 |
20100154393 | Combination partial flow particulate filter and catalyst - The present disclosure is directed to a filtering element. The filtering element may comprise at least one channel defined by at least one wall. The at least one wall extends longitudinally from a first end of the channel to a second end of the channel, the at least one channel having an unobstructed first end and an unobstructed second end. The filtering element further includes at least one partial barrier configured to reduce a path of a flow of exhaust through the at least one channel, the at least one partial barrier being positioned within the at least one channel so as to redirect a portion of the exhaust flow within the channel. The at least one channel includes a selective catalytic reduction catalyst on at least a portion of one of a surface of the at least one partial barrier or a surface of the at least one wall. | 06-24-2010 |
20100170230 | WASHCOATED PARTICULATE FILTER SUBSTRATE - An apparatus comprises a particulate filter substrate for an internal combustion engine, the filter substrate is coated at least in part with a washcoat, and the washcoat comprises a relatively high density material having a density of at least 3.50 gcm | 07-08-2010 |
20100175372 | COMPACT DIESEL ENGINE EXHAUST TREATMENT SYSTEM - 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 NO | 07-15-2010 |
20100180579 | EMISSION CONTROL SYSTEM WITH AN INTEGRATED PARTICULATE FILTER AND SELECTIVE CATALYTIC REDUCTION UNIT - The present invention relates to an emission control system for reducing gases from the exhaust of a combustion process. In at least one embodiment, the emission control system includes an exhaust passage for transporting the exhaust from the combustion process; a reductant disposed within exhaust passage downstream of the combustion process, and an integrated particulate filter and selective catalytic reduction unit disposed downstream of the reductant, with the unit having a first selective catalytic reduction catalyst disposed within a first inner wall portion of the exhaust passage; and a particulate filter disposed within a second inner wall portion of the exhaust passage downstream of the first inner wall portion. In at least one particular embodiment, the particulate fileter is coated with a second selective catalytic reduction catalyst. | 07-22-2010 |
20100180580 | Emissions Treatment Systems and Methods With Catalyzed SCR Filter and Downstream SCR Catalyst - Emissions treatment systems and methods for treating an engine exhaust gas stream containing NO | 07-22-2010 |
20100180581 | DIESEL OXIDATION CATALYST COMPOSITE WITH LAYER STRUCTURE FOR CARBON MONOXIDE AND HYDROCARBON CONVERSION - Provided is a catalyst composition, in particular a diesel oxidation catalyst, for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO). More particularly, the present invention is directed to a catalyst structure comprising at least two, specifically three distinct layers, at least one of which contains an oxygen storage component (OSC) that is present in a layer separate from the majority of the platinum group metal (PGM) components, such as palladium and platinum. | 07-22-2010 |
20100180582 | Diesel Oxidation Catalyst With Layer Structure for Improved Hydrocarbon Conversion - Provided is a diesel oxidation catalyst for the treatment of exhaust gas emissions from a diesel engine and a method for treating a diesel exhaust gas stream, the method comprising providing a diesel oxidation catalyst and contacting said diesel exhaust gas stream with said diesel oxidation catalyst for the treatment of exhaust gas emissions. More particularly, the present invention is directed to a catalyst structure comprising three distinct layers; in which layer comprises a precious metal component such as palladium is located between two hydrocarbon storage layers comprising a molecular sieve such as a zeolite. | 07-22-2010 |
20100192552 | EXHAUST GAS TREATMENT CATALYST, EXHAUST GAS TREATMENT METHOD, AND EXHAUST GAS TREATMENT APPARATUS - An exhaust gas treatment catalyst for removal of one or more pollutants in an exhaust gas, the catalyst comprising: a SO | 08-05-2010 |
20100205944 | EXHAUST EMISSION CONTROL DEVICE - The invention has its object to provide an exhaust emission control device with realized lessening of both particulates and NO | 08-19-2010 |
20100205945 | EXHAUST EMISSION CONTROL DEVICE - Provided is an exhaust emission control device in which only a casing for a particulate filter can be easily taken out of position with a casing for a selective reduction catalyst being left on a vehicle body in a reliably supported state. | 08-19-2010 |
20100218488 | CONSTRUCTION MACHINE - A construction machine that permits an exhaust gas after-treatment device to be disposed while avoiding an increase of height and hence avoiding narrowing of an operator's visual field. A guard panel is disposed substantially in parallel with a base frame. The guard panel includes a top plate, the top plate including an opening formed at a portion thereof corresponding to an engine, and a bonnet formed so as to project upwards from the top plate and cover the opening. A first treatment section is disposed lower than the top plate and a second treatment section includes at least a portion positioned higher than the top plate through the opening and lower than the bonnet. | 09-02-2010 |
20100223918 | SOOT OXIDATION CATALYST AND METHOD OF MAKING - A catalyst composition for facilitating the oxidation of soot from diesel engine exhaust is provided. The catalyst composition includes a catalytic metal selected from Pt, Pd, Pt—Pd, Ag, or combinations thereof, an active metal oxide component containing Cu and La, and a support selected from alumina, silica, zirconia, or combinations thereof. The platinum group metal loading of the composition is less than about 20 g/ft | 09-09-2010 |
20100229539 | HYDROCARBON SCR AFTERTREATMENT SYSTEM - An engine exhaust aftertreatment system including a selective catalytic reduction (SCR) device. The system contains no significant amount of catalyzed material upstream of the SCR device. | 09-16-2010 |
20100236224 | Emissions Treatment System With Lean NOx Trap - Systems and methods for abating NOx in an exhaust stream are provided. System using a lean NOx trap, an air injector and optional catalysts and filters are described. The emissions treatment system is advantageously used for the treatment of exhaust streams from diesel engines and lean burn gasoline engines. | 09-23-2010 |
20100242450 | EXHAUST GAS-TREATING DEVICE - An exhaust gas-treating device ( | 09-30-2010 |
20100242451 | EXHAUST GAS-TREATING DEVICE - An exhaust gas-treating device ( | 09-30-2010 |
20100257849 | EXHAUST EMISSION CONTROL DEVICE - An object of the invention is to provide an exhaust emission control device which eliminates the use of a heat-retention structure using heat-insulating material such as glass wool so as to attain substantial lessening in production cost. A discharge end of a gas gathering chamber is connected to an entry end of a mixing pipe so as to encase the entry end of the mixing pipe and close an opened end face in a required spaced-apart relationship. Moreover, a side surface of the entry end of the mixing pipe adjacent to the discharge side of the particulate filter is formed with an opening; and gas guide passages are formed in the gas gathering chamber by guide fins for tangential introduction of all of the exhaust gas from the discharge side of the particulate filter to the opening. An extra space isolated from the gas guide passages is ensured in the gas gathering chamber as a heat-retention chamber surrounding the entry end of the mixing pipe. | 10-14-2010 |
20100257850 | EXHAUST EMISSION CONTROL DEVICE - An exhaust emission control device is provided which can reliably absorb thermal expansion difference between a particulate filter and a selective reduction catalyst without causing deposition of urea. | 10-14-2010 |
20100269492 | DIESEL AFTERTREATMENT SYSTEM - A diesel exhaust gas aftertreatment system ( | 10-28-2010 |
20100269493 | EXHAUST SYSTEM FOR AN ENGINE - An exhaust system for an engine including an exhaust passage with an expanding flow area and at least an opening for transferring air external to within the exhaust passage to cool the exhaust, for example due to particulate filter regeneration. | 10-28-2010 |
20100281856 | DEVICE FOR PURIFICATION OF EXHAUST GAS - A device for purification of exhaust gas including: an exhaust gas passage | 11-11-2010 |
20100287915 | Integrated PM Filter and SCR Catalyst for Lean Burn Engine - A wall-flow exhaust gas emissions aftertreatment device for simultaneously reducing the particulate matter and NOx content of the exhaust. The device comprises a number of longitudinal inlet channels and outlet channels, the inlet channels being plugged at the exit face, and the outlet channels being plugged at the entry face. The interiors of the inlet channels are coated with a particulate matter catalyst coating, and the interiors of the outlet channels are coated with a selective catalyst reduction catalyst coating. | 11-18-2010 |
20100293929 | EXHAUST AFTERTREATMENT SYSTEMS FOR GASOLINE AND ALTERNATIVE-FUELED ENGINES, WITH REDUCTION OF HC, CO, NOx, AND PM - An exhaust gas emissions aftertreatment system for spark-ignition engines, which simultaneously reduces the particulate matter, HC, CO, and NOx content of the exhaust. Various embodiments of the system have both a closely-coupled TWC device, and an under-floor treatment device. The under-floor device has either TWC or NOx reduction functionality, depending on whether the engine is run under stiochiometric or lean burn operating conditions. | 11-25-2010 |
20100300078 | Exhaust After Treatment System - In an exemplary embodiment of the present invention, an exhaust treatment system for reducing constituents in the exhaust gas of an internal combustion engine is provided. A ceramic monolith is disposed within the exhaust treatment system and has exhaust flow passages extending therethrough that are defined by longitudinally extending walls therebetween. A first catalyst composition for catalytic reduction of oxides of nitrogen in the exhaust gas is applied to a first portion of the exhaust flow passages. A second catalyst composition for catalytic oxidation of hydrocarbons and oxides of nitrogen in the exhaust gas is applied serially downstream to a second, portion of the exhaust flow passages. The second catalytic composition is configured to reduce ammonia and hydrocarbon slip past the first catalytic composition. | 12-02-2010 |
20100300079 | OPERATION OF DIESEL/LEAN-BURN ENGINES HAVING EASILY REGENERATED PARTICLE FILTERS IN THE EXHAUST SYSTEMS THEREFOR - Diesel or lean-burn engines which are fitted with an exhaust system provided with a particle filter are supplied with a fuel containing an additive capable of lowering the temperature at which the soot particles trapped by the particle filter can be burned and which essentially consists of an iron compound or essentially consists of an iron compound and of a cerium compound, and wherein the particle filter through which the exhaust gases produced by the combustion of the fuel in the engine pass is a catalytic filter in which the catalyst assists with the combustion of the soot particles; this improves soot combustion dynamics, particularly at low temperatures. | 12-02-2010 |
20100300080 | Device for Post-Treatment of Exhaust Gases of a Lean Burning Internal Combustion Engine - The invention relates to a device for post-treatment of exhaust gases of a lean burning internal combustion engine, in particular a diesel internal combustion engine, with an exhaust gas channel in which downstream of a reducing agent metering device there is a catalytic converter for selective catalytic reduction as an SCR catalytic converter. According to the invention, the exhaust gas channel section which, viewed in the exhaust gas flow direction, extends between the reducing agent metering device and the SCR catalytic converter, is made as a preferably air gap-insulated exhaust gas channel section. | 12-02-2010 |
20100326059 | SELECTIVE CATALYTIC REDUCTION EXHAUST AFTERTREATMENT SYSTEM AND ENGINE INCORPORATING THE SAME - In one exemplary embodiment of the present invention, an exhaust aftertreatment system is disclosed. The system includes an oxidation catalyst (OC) that is configured to receive an exhaust gas flow from an engine. The system also includes an uncoated particulate filter (PF) that is configured to receive the exhaust gas flow from the OC. The system further also includes an exhaust fluid (EF) dosing device configured for dosing of an EF into the exhaust gas flow upstream of the uncoated PF. Still further, the system includes a selective catalyst reduction (SCR) catalyst that is configured to receive the exhaust gas flow from the uncoated PF, wherein the OC, uncoated PF and SCR catalyst comprise an exhaust aftertreatment system. A urea injector may be provided as the EF dosing device and arranged to inject urea, for example, into the exhaust gases upstream of the uncoated PF. | 12-30-2010 |
20110005211 | COATING OF SUBSTRATES ENSURING A HIGH POROSITY WITH SIMUTANEOUSLY HIGH ABRASION RESISTANCE OF THE COATING - The invention relates to a coating suspension for the coating of catalyst substrates which comprises a polymeric pore-forming agent. The invention also relates to methods for coating catalyst substrates, by a) preparing a coating suspension and a catalyst substrate b) applying the coating suspension to the catalyst substrate, c) drying and calcining the applied coating, wherein the coating suspension contains a polymeric pore-forming agent which is removed residue-free in step c). Furthermore the invention relates to a catalyst which comprises the coated catalyst substrate according to the invention. | 01-13-2011 |
20110011067 | Ash Filter, Exhaust Gas Treatment System Incorporating the Same and Method of Using the Same - An ash filter for a reciprocating piston internal combustion engine is disclosed. The ash filter includes a substrate, such as a honeycomb monolith substrate or a plurality of particulate substrates, and a matrix of a zeolite material disposed on the respective substrate or substrates, the matrix of the zeolite material configured to remove ash from an exhaust gas flow from a reciprocating piston internal combustion engine. An exhaust treatment system for a reciprocating piston internal combustion engine is disclosed. The exhaust treatment system includes an ash filter comprising a matrix of a first zeolite and configured to receive an exhaust gas flow from an engine; and an exhaust treatment device, the exhaust treatment device comprising a matrix of a second zeolite and configured to receive the exhaust gas flow from the ash filter. | 01-20-2011 |
20110011068 | Exhaust Gas Treatment System - An emission treatment system for a vehicle having an internal combustion engine is disclosed. The emission treatment system has an HC-SCR catalyst including a non-Pt group metal dispersed in a ceramic matrix configured to receive an exhaust gas flow from an engine. The system also has an oxidation catalyst comprising a Pt group metal configured to receive the exhaust gas flow from the HC-SCR catalyst. The system also has a U-SCR catalyst and a diesel particulate filter, one of the U-SCR catalyst or the DPF configured to receive the exhaust gas flow from the oxidation catalyst and the other one of the U-SCR catalyst or the diesel particulate filter configured to receive the exhaust gas flow from the respective one. | 01-20-2011 |
20110030351 | EXHAUST GAS PURIFICATION APPARATUS - The exhaust gas purification apparatus includes an oxidation catalyst, an ammonia adsorption portion, a selective catalytic reduction catalyst and a urea water supply device. The oxidation catalyst is provided in a passage through which exhaust gas flows. The ammonia adsorption portion is located in the passage downstream of the oxidation catalyst with respect to the flow of the exhaust gas and operable to adsorb ammonia. The selective catalytic reduction catalyst is located in the passage downstream of the ammonia adsorption portion. The urea water supply device is provided for supplying urea water to the passage upstream of the selective catalytic reduction catalyst. | 02-10-2011 |
20110030352 | TWO-STROKE LEAN BURN GAS ENGINE WITH A SILENCER/CATALYTIC CONVERTER - 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 dampens 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. | 02-10-2011 |
20110030353 | EXHAUST GAS PURIFYING DEVICE - A support member ( | 02-10-2011 |
20110030354 | PARTICULATE COMBUSTION CATALYST, PARTICULATE FILTER AND EXHAUST GAS PURIFYING APPARATUS - Provided is a particulate combustion catalyst including a carrier formed of Zr oxide, a carrier formed of a Zr—Ce composite oxide, or a carrier formed of a composite oxide containing Zr, Ce, and at least one metal selected from among Nd, La, Fe, Y, Pr, Ba, Ca, Mg, Sn, and Sr; an oxide of at least one metal selected from the group consisting of Ba, Ca, Mg, and Sr, the metal oxide being supported on the carrier in an amount, as reduced to metal, of 0.5 to 30 mass % with respect to the carrier; and metallic Ag or Ag oxide, which serves as a catalyst component and is supported on the carrier. Also provided are a particulate filter coated with the catalyst; and an exhaust gas cleaning apparatus including a particulate filter coated with the catalyst. | 02-10-2011 |
20110041485 | EXHAUST EMISSION CONTROL DEVICE - The invention has its object to provide an exhaust emission control device which can be favorably mounted on a vehicle without causing relative twisting between a particulate filter and a selective reduction catalyst. In the exhaust emission control device in which a particulate filter and a selective reduction catalyst are housed by casings, respectively, and arranged side by side such that inlet ends of the filter and the catalyst are oriented to one and the same direction, an S-shaped communication passage being provided for introduction of the exhaust gas from an outlet end of the filter to an inlet end of the adjacent catalyst through antithetical turnabout, urea water being addible intermediately of the communication passage, the casings for the filter and catalyst are integrally restrained by rigid plates (restraining members). | 02-24-2011 |
20110047989 | APPARATUS FOR AFTER-TREATMENT OF EXHAUST FROM DIESEL ENGINE - An apparatus for after-treatment of exhaust gas from a diesel engine may include a Diesel Particulate Filter (DPF) located upstream of an exhaust pipe connected to an engine exhaust manifold, a Diesel Oxidation Catalyst (DOC) located downstream of the diesel particulate filter, and an ammonia Selective Catalyst Reduction (SCR) catalyst located downstream of the diesel oxidation catalyst, wherein the ammonia SCR catalyst is made of zeolite. The DOC has a carrier containing a single active material of Ru or a composite active material of Pt and Ru, and the weight ratio of Pt to Ru is 2:1 or less. The apparatus can efficiently remove pollutants such as hydrocarbons and CO in the exhaust, naturally regenerate the DPF by burning off particulate matter, and maximize the ability of the ammonia SCR catalyst to remove NOx by increasing the amount of NO | 03-03-2011 |
20110047990 | EXHAUST GAS PURIFIER AND SYSTEM FOR EXHAUST GAS PURIFICATION - In an exhaust gas purifier ( | 03-03-2011 |
20110047991 | EXHAUST GAS PURIFICATION APPARATUS - An exhaust gas purification apparatus includes a first oxidation catalyst provided in a passage through which exhaust gas flows, a particulate matter collecting device provided downstream of the first oxidation catalyst, a selective catalytic reduction catalyst integrally formed with the particulate matter collecting device and having ammonia adsorption property, a second oxidation catalyst integrally formed with the particulate matter collecting device and oxidizing ammonia at a predetermined temperature or higher and a urea water supply device provided upstream of the selective catalytic reduction catalyst for supplying urea water. The urea water supply device supplies urea water only when a temperature of the second oxidation catalyst is below the predetermined temperature. | 03-03-2011 |
20110067386 | Oxidizing Particulate Filter - A particulate filter assembly for application to an exhaust system of an internal combustion engine comprises an exhaust gas particulate filter configured to receive and filter exhaust gas from an exhaust system. An oxidation catalyst compound is disposed on an outer radial region of the exhaust gas particulate filter and is configured to induce oxidation of carbon monoxide from the combustion of carbon and particulates, to thereby maintain temperatures in the radially outer portion at a level sufficient to maintain the combustion of carbon and particulates therein. | 03-24-2011 |
20110088376 | EXHAUST EMISSION CONTROL DEVICE - An object of the invention is to provide an exhaust emission control device capable of favorably dispersing urea water for improved mixing with exhaust gas even if a flow rate of the exhaust gas is increased. An entry end of a mixing pipe is formed with a first opening at a position near an exit side of a particulate filter and is formed with a second opening at a position away from the exit side of the particulate filter and diametrically opposite to the first opening. Arranged in a downstream end of a gas gathering chamber are a first partition which guides all of the flow of exhaust gas from the particulate filter into a one-way swirling flow around the entry end of the mixing pipe, a second partition which divides the flow of the exhaust gas guided by the first partition into two to cause an inner one of the divided swirling flows to tangentially enter into the first opening and a third partition which causes the remaining outer swirling flow to tangentially enter into the second opening. | 04-21-2011 |
20110099986 | Green muffler - The present invention provides an automotive exhaust system that removes harmful contaminants from engine exhaust and thus reduces air pollution, presents a number of distinct and significant benefits and advantages. Foremost, the Green Muffler subjects engine exhaust gases to a two-stage cleansing and purification process, first scrubbing the gases in a recirculating air-and-water bath; and then combining the remnant gases with an air-freshening chemical before release to the atmosphere. The Green Muffler, then, serves to lower a vehicle's carbon-dioxide and carbon-monoxide emissions and thereby reduces the level of air pollution and atmospheric warming due to car exhaust. Further, the Green Muffler reduces the temperature of vehicle exhaust, another plus for the planet. | 05-05-2011 |
20110107745 | EXHAUST GAS PURIFICATION CATALYST AND EXHAUST GAS PURIFICATION APPARATUS USING THE EXHAUST GAS PURIFICATION CATALYST - This invention provides an exhaust gas purification catalyst, which can burn PM (particulate matter) at a temperature below the temperature required in the prior art technique and can realize a high PM combustion rate at elevated temperatures, and an exhaust gas purification apparatus using the exhaust gas purification catalyst. The exhaust gas purification catalyst comprises a composite oxide having oxygen release properties and Ag and a noble metal co-supported on the composite oxide. The exhaust gas purification catalyst and an exhaust gas purification apparatus ( | 05-12-2011 |
20110107746 | EXHAUST GAS PURIFICATION DEVICE - An exhaust gas purification device in which catalysts are efficiently activated and in which pressure loss caused by deposition of particulates exhausted from an internal combustion engine is suppressed. The exhaust gas purification device has a first purification section and a second purification section. The first purification section has a metal honeycomb structure where a first oxidation catalyst is carried. The second purification section is placed on the downstream side of the first purification section and has a particulate filter that carries different amounts of second oxidation catalysts on the upstream side and on the downstream side of an exhaust gas route. | 05-12-2011 |
20110107747 | EXHAUST GAS RECIRCULATION SYSTEM AND APPARATUS FOR A LOCOMOTIVE TWO-STROKE UNIFLOW SCAVENGED DIESEL ENGINE - A locomotive two-stroke uniflow scavenged diesel engine system including an exhaust gas recirculation (EGR) system and apparatus is described for reducing NO | 05-12-2011 |
20110107748 | PARTICLE FILTER WITH HYDROLYSIS COATING, DEVICE AND MOTOR VEHICLE - A particle filter includes channels that are formed by porous walls and run between a first end face and a second end face of the particle filter. The first end face has a hydrolysis coating outside the channels. A device includes at least one exhaust gas line through which an exhaust gas can flow in a flow direction, a nozzle for introducing a reducing agent containing or forming ammonia, and the aforementioned particle filter. The first end face of the particle filter is oriented towards the nozzle. A motor vehicle having the particle filter or the device, is also provided. | 05-12-2011 |
20110107749 | EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE - There is provided an exhaust gas purification system for an internal combustion engine in which exhaust gas that is in a state in which an even concentration distribution of reducing agent is achieved is caused to flow into an exhaust gas purification apparatus. The system includes a small-diameter catalyst | 05-12-2011 |
20110113760 | EXHAUST SYSTEM FOR FIREFIGHTING VEHICLE - An after treatment exhaust system is provided. The after treatment exhaust system includes a diesel particulate filter configured to be supported at a first lateral side of a vehicle chassis and a selective catalytic reduction device configured to be supported at a second lateral side of the vehicle chassis opposite the first lateral side. The after treatment exhaust system also includes a first conduit configured to be in fluid communication between an engine and the diesel particulate filter, a second conduit configured to be in fluid communication between the diesel particulate filter and the selective catalytic reduction device and a third conduit having a first end coupled to the selective catalytic reduction device and at least one second end configured to be open to the environment. | 05-19-2011 |
20110113761 | Wall Flow Filter Loaded With SCR Catalyst, Systems and Methods of Exhaust Gas Treatment - Provided are selective catalytic reduction catalytic articles, emission treatment systems and methods for simultaneously remediating the nitrogen oxides (NO | 05-19-2011 |
20110120101 | FILTER FOR VEHICLE EXHAUST SYSTEM - A vehicle exhaust system includes a catalytic converter connected to an exhaust pipe. An exhaust filter is connected to the exhaust pipe downstream from the catalytic converter. The exhaust filter is a charcoal filter that filters particulates from the air flow in the exhaust pipe. The exhaust filter is threadingly engaged with the exhaust pipe and is disposable. | 05-26-2011 |
20110146250 | THERMAL ENERGY CONTAINING ARRANGEMENT FOR AN EXHAUST GAS PURIFICATION DEVICE - A thermal energy thermal energy containing arrangement for an exhaust gas purification device incorporated in an exhaust line of an internal combustion engine is provided. The purification device has an inlet port through which exhaust gas from the internal combustion engine can flow in and an outlet port through which the treated exhaust gas can flow out. The arrangement includes a retractable upstream thermal energy containing arrangement located upstream the purification device and a retractable downstream thermal energy containing arrangement located downstream the purification device and an actuating arrangement for controlling the position of the upstream thermal energy containing arrangement and of the downstream thermal energy containing arrangement within regard to respectively the inlet port and the outlet port of the purification device, the upstream thermal energy containing arrangement and the downstream thermal energy containing arrangement being movable between (i) an engine operating position wherein the upstream thermal energy containing arrangement and the downstream thermal energy containing arrangement are in an at least partially retracted position and allow the flow of exhaust gas in and out of the purification device and (ii) a thermal energy preserving position wherein at least one of the upstream thermal energy containing arrangement and of the downstream thermal energy containing arrangement shut off respectively the inlet port and outlet port of the purification device. | 06-23-2011 |
20110154808 | EXHAUST GAS PURIFICATION APPARATUS FOR DIESEL ENGINE - A DPF disposed in an exhaust passage of a diesel engine is coated with a selective reducing catalyst, for selectively reducing and purifying NOx by using a reducing agent, and a thin film, having fine pores of size for allowing passage of the NOx and preventing passage of PM, in this order. In regeneration treatment of a DPF, the thin film prevents direct transmission of combustion heat of the PM to the selective reducing catalyst and suppresses a temperature rise of the selective reducing catalyst to thereby suppress deterioration of an active component. | 06-30-2011 |
20110162352 | METHOD FOR ESTIMATING SOOT LOADING IN A DIESEL PARTICULATE FILTER, AND ENGINE AND AFTERTREATMENT SYSTEM - A method for estimating soot loading of a diesel particulate filter includes establishing a soot loading model for estimating soot loading of a nominal diesel particulate filter, adjusting the soot loading model for a subject filter to account for differences between the nominal filter and the subject filter, and estimating soot loading of the subject filter using the adjusted soot loading model. An engine with a diesel particulate filter is also provided. | 07-07-2011 |
20110167806 | PARTICLE FILTER DEVICES - A device for reducing pollution of an internal combustion engine, including a collection of monolithic elements of honeycomb type connected by a jointing compound, each element incorporating a set of adjacent cells of mutually parallel axes separated by porous walls, which cells are plugged by plugs at one or other of their ends to delimit inlet chambers opening onto a gas intake face and outlet chambers opening onto a gas discharge face such that gas that is to be filtered passes through the porous walls, the collection being inserted in a metal casing by a compacted fibrous mat. A jointing compound has a three-point flexural modulus of rupture of between 0.5 and 6 MPa, the jointing compound has a dynamic Young's modulus less than or equal to 17 GPa, the mat has a mean density in the compacted state of between 0.30 and 0.54, and the mean thickness of the mat in the compacted state is between 2 and 8 mm. | 07-14-2011 |
20110173959 | EXHAUST SYSTEM FOR LEAN-BURN INTERNAL COMBUSTION ENGINE COMPRISING PD-AU-ALLOY CATALYST - An apparatus (10) comprising a lean burn internal combustion engine (12) and an exhaust system (14) comprising at least one catalytic aftertreatment component (18, 20, 22), wherein the at least one catalytic aftertreatment component comprises a catalyst composition comprising an alloy consisting of palladium and gold on a metal oxide support. | 07-21-2011 |
20110179777 | EXHAUST SYSTEM FOR A LEAN BURN IC ENGINE - An exhaust system( | 07-28-2011 |
20110203262 | DEVICE FOR REDUCING NOX EMISSION IN A DIESEL ENGINE SYSTEM - A device is provided for reducing NOx emission in the engine exhaust stream for a Diesel engine system. The engine system including, but not limited to an exhaust line having at least a Diesel Oxidation Catalyst (DOC), a Diesel Particulate Filter (DPF) and a Selective Catalyst Reduction (SCR) system. Inside the Diesel Particulate Filter (DPF) a NOx absorber is provided and the NOx absorber being suitable to store the NOx at low temperature and subsequently release the NOx when a target temperature is reached. | 08-25-2011 |
20110214415 | GAS/LIQUID MIXING DEVICE FOR DIESEL EXHAUST AFTERTREATMENT - An exhaust gas treatment system for an internal combustion engine comprises an exhaust gas conduit configured to receive and to deliver exhaust gas to a downstream exhaust treatment device. An injector bay extends outwardly from the exhaust gas conduit upstream of the exhaust treatment device and an exhaust fluid injector mounts through an opening in the injector bay and is in fluid communication with the exhaust gas conduit and oriented in an upstream direction to deliver an exhaust fluid to the exhaust gas in the upstream direction. An exhaust flow baffle extends outwardly from the injector bay and into the exhaust gas in an upstream direction. The exhaust flow baffle is located upstream of the exhaust fluid injector and is configured to define a turbulent, low pressure velocity field downstream thereof and proximate to the exhaust fluid injector. | 09-08-2011 |
20110252773 | Gasoline Engine Emissions Treatment Systems Having Particulate Filters - Provided are exhaust systems and components suitable for use in conjunction with gasoline engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate filters are provided. Coated particle filters having washcoat loadings in the range of 1 to 4 g/ft | 10-20-2011 |
20110258992 | Ammonia Slip Catalyst Diagnostic Methods and Systems - A method of diagnosing an ammonia slip catalyst device is provided. The method includes: computing a delta between a first temperature and a second temperature; evaluating the delta based on an efficiency threshold; and generating a fault notification based on the evaluating. | 10-27-2011 |
20110258993 | EXHAUST SYSTEM FOR LEAN BURN IC ENGINE INCLUDING PARTICULATE FILTER AND NOX ABSORBENT - An exhaust system for a lean burn internal combustion engine comprises a particulate filter (CSF), a first NO | 10-27-2011 |
20110258994 | Bifunctional Catalyst for Decomposition and Oxidation of Nitrogen Monoxide, Composite Catalyst Including the Same for Apparatus to Decrease Exhaust Gas, and Method for Preparation Thereof - Disclosed are a bifunctional catalyst for simultaneously removing nitrogen oxide and particulate matters, capable of decomposing nitrogen monoxide and generating nitrogen dioxide through oxidation of nitrogen monoxide, a composite catalyst including the catalyst for simultaneously removing nitrogen oxide and particulate matters used for an apparatus to decrease exhaust gas of diesel vehicles, and a method for preparation thereof. The catalyst and the composite catalyst can be used in a device for reducing exhaust gas contaminants mounted on a diesel vehicle and an exhaust gas purification system comprising the device. | 10-27-2011 |
20110277454 | APPARATUS AND SYSTEM FOR TRAPPING DEBRIS AND ARRESTING SPARKS - Described herein are various embodiments of an apparatus and system for trapping debris and arresting sparks that overcomes at least some shortcomings of the prior art approaches. According to one embodiment, an apparatus is disclosed for mitigating failure of an exhaust after-treatment component in an internal combustion engine system capable of generating an exhaust gas stream. The apparatus includes a housing that includes an exhaust inlet, exhaust outlet, and exhaust flow channel positioned between the exhaust inlet and outlet. Also, the apparatus includes a tubular-shaped mesh screen positioned substantially entirely within the exhaust flow channel. The mesh screen includes a closed end positioned proximate the exhaust inlet of the housing and an opposing open end positioned proximate the exhaust outlet of the housing. The mesh screen is configured to capture failed exhaust after-treatment component particles within the exhaust gas stream. | 11-17-2011 |
20120011832 | DIESEL EXHAUST GAS TREATMENT SYSTEM - A catalyst composition for facilitating the oxidation of soot from diesel engine exhaust is provided. The catalyst composition includes a catalytic metal selected from Pt, Pd, Pt—Pd, Ag, or combinations thereof, an active metal oxide component containing Cu and La, and a support selected from alumina, silica, zirconia, or combinations thereof. The platinum group metal loading of the composition is less than about 20 g/ft | 01-19-2012 |
20120011833 | Exhaust Gas Purifying Device for Internal Combustion Engine - An exhaust gas purifying device for an internal combustion engine includes an inflow case provided with an inlet pipe, a catalyst case in which an oxidizing catalyst for dosing is housed, a filter case in which a soot filter is housed, and an outflow case provided with an outlet pipe, and is attached to an attached target at two attachment points mutually spaced in the axial direction of the cases. At one of the two attachment points, which is defined on the catalyst case, the catalyst case is firmly fixed. At the other attachment point, which is defined on the filter case, the filter case is attached slidably in the axial direction. | 01-19-2012 |
20120017574 | STRAP FOR SECURING EXHAUST TREATMENT DEVICE - A strap for securing an exhaust treatment device is disclosed. The strap may have a coupler on a first end and a loop on a second end. The loop may include an inner portion, a curved portion, and an outer portion of the strap. The outer portion of the strap may be secured to the inner portion of the strap at a point of securement to form the loop. The outer portion may form an angle with respect to the inner portion that is no greater than about 10 degrees as the outer portion diverges from abutting the inner portion. | 01-26-2012 |
20120031083 | APPARATUS FOR TREATING DIESEL ENGINE EXHAUST GAS - An apparatus for treating Diesel engine exhaust gas includes a filter unit which is located in the upstream side of a flow passage in a Diesel engine exhaust duct, the filter unit being composed of a plural number of filter chambers which are thermally insulated from each other and selectively opened for admission of the exhaust gas. Located in the downstream side is a nitrogen oxide treatment section to induce reactions between nitrogen oxides and reductant gas components of the exhaust gas. The exhaust gas is admitted into one of the filter chambers in one time period to trap particulate material on a filter in a filter chamber while letting reductant gas components of the exhaust gas pass through toward the nitrogen oxide treatment section which is located in the downstream side. In the nitrogen oxide treatment section, reducing reactions are induced between nitrogen oxides and reductant gas components of the exhaust gas in the presence of a nitrogen oxide reduction catalyst. Concurrently, in a filter chamber which is disconnected from an exhaust gas inlet passage, a heater is turned on to burn off particulate matter trapped on a filter in a filter chamber. | 02-09-2012 |
20120042637 | TALL VERTICAL SCR - An exhaust aftertreatment system including an exhaust conduit transmitting exhaust from an engine, a reductant introduction system introducing a reductant into the exhaust, and a selective catalytic reduction catalyst (SCR) receiving the exhaust and reductant. A SCR length divided by a SCR width is greater than 4. A SCR cell density is less than 180 cells per square inch of cross-sectional area of the SCR. The SCR is vertically mounted adjacent a corner of a cab of a machine. | 02-23-2012 |
20120042638 | Exhaust Gas Cleaning Device, Exhaust System, Removal Method - The present invention relates to an exhaust gas cleaning device ( | 02-23-2012 |
20120042639 | MULTI-ENGINE SYSTEM WITH ON-BOARD AMMONIA PRODUCTION - A power system is provided having a first power source including at least one engine configured to combust a first air/fuel mixture and produce a first exhaust stream. The fuel of the first air/fuel mixture may be liquefied petroleum gas. The system also has a first exhaust passageway fluidly connected to the first power source and configured to receive the first exhaust stream. In addition, the system has a second power source including at least one engine configured to combust a second fuel/air mixture and produce a second exhaust stream. Furthermore, the system has a second exhaust passageway fluidly connected to the second power source and configured to receive the second exhaust stream. The system further has a first catalyst disposed within the first exhaust passageway to convert at least a portion of the first exhaust stream to ammonia | 02-23-2012 |
20120102929 | Power Systems With Internally Integrated Aftertreatment and Modular Features - Disclosed is a power system that may be housed inside a single ISO shipping container having standard outside dimensions. The system may include a power source and an internally integrated aftertreatment module that is removable as a unit and that comprises, for example, Particle Filters (PF), and/or Oxidation Catalysts (OC), and/or Selective Catalytic Reduction (SCR) systems. The power system may include other removable modules such as a power module comprising a generator, pump, chipper, chiller, or other power equipment, a container module for fuel, and a container module for reductant, both of which may be non-rectangular in cross-section. A system is also disclosed for providing on-site power in the absence of shore power. | 05-03-2012 |
20120124974 | Advanced Catalyzed Soot Filters And Method Of Making And Using The Same - Catalyzed soot filters comprising a wall flow monolith having porous walls, a first washcoat permeating the porous walls and a second washcoat on the porous walls are disclosed. Methods of manufacturing catalyzed soot filters and diesel engine exhaust emission treatment systems are also disclosed. | 05-24-2012 |
20120124975 | Diesel Oxidation Catalyst Articles And Methods Of Making And Using - Diesel oxidation catalysts, catalytic articles, methods of making catalytic articles, emissions treatment systems and methods of treating an exhaust gas stream using the catalytic articles for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC) and carbon monoxide | 05-24-2012 |
20120159935 | PEROVSKITE-BASED CATALYSTS, CATALYST COMBINATIONS AND METHODS OF MAKING AND USING THE SAME - One embodiment of the invention may include a method comprising providing a product comprising a substrate comprising a perovskite catalyst, NO | 06-28-2012 |
20120180463 | DIESEL ENGINE - Provided is a diesel engine which can efficiently regenerate a diesel particulate filter. The control for regeneration using an ECU includes a first regeneration by burning particulate matter at slightly more than 300° C. for 20 minutes when the accumulation of particulate matter exceeds a first threshold; a second regeneration by burning particulate matter at approximately 560° C. for 30 minutes by an additional injection to remove particulate matter other than ash when the accumulation of particulate matter exceeds the first threshold for a first predetermined period of time, or every 100 hours; and a third regeneration by burning particulate matter at approximately 600° C. for 15 minutes by an additional injection to remove particulate matter other than ash when the accumulation of particulate matter exceeds a second threshold and an emergency regeneration switch is pushed, or after 50 hours since the second or third regeneration and the emergency regeneration switch is pushed. | 07-19-2012 |
20120198824 | EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE - The exhaust purification system of an internal combustion engine of the present invention is provided with an NO | 08-09-2012 |
20120210701 | EXHAUST-GAS MUFFLER - An exhaust-gas muffler includes a casing and a relief valve. The relief valve is provided to open when a pressure of an upstream exhaust-gas chamber is equal to or higher than a predetermined value. The relief valve includes a shutter, a spring, and a seal member. The shutter member is provided to face an open end of a gas passage provided between an upstream exhaust-gas chamber and a downstream exhaust-gas chamber. The spring is to bias the shutter member in a direction in which the gas passage is closed. The seal member is disposed on a downstream side of the gas passage. The seal member is made of a metal mesh material and has a disc shape to cover the open end of the gas passage. | 08-23-2012 |
20120216514 | Soot Resistant Diesel Fuel Reformer For Diesel Engine Emissions Aftertreatment - A soot resistant and efficient diesel fuel reformer for a diesel exhaust aftertreatment system has serially arranged first and second catalyst supports. The first support is nearer the inlet and has a monolith structure that is uniform in the direction of flow. The second support has a modified monolith structure that is non-uniform in the direction of flow. Preferably, the first support has straight channels. Preferably, the second support has internal leading edges spaced periodically through its length to break up the flow. The first support has a catalyst coating comprising at least an oxidation catalyst. The second support has a catalyst coating comprising at least a steam reforming catalyst. | 08-30-2012 |
20120222410 | METHODS AND SYSTEMS FOR REMOVING POLLUTANTS FROM FLUID STREAM - A pollutant removal system for use with a power generation system includes a particulate control device configured to remove particulates from a flue gas stream produced within the power generation system. The particulate control device is cleaned on a predetermined cleaning cycle. The pollutant removal system also includes a sorbent control system for controllably injecting a sorbent into the flue gas stream upstream of the particulate control device. The sorbent control system is configured to adjust a sorbent injection rate as a function of the cleaning cycle. | 09-06-2012 |
20120222411 | ENGINE EXHAUST PURIFICATION DEVICE - In an exhaust filter, a urea hydrolysis catalyst is supported on a first portion of an inner wall of a cell passage on the inlet side, and a first NOx reducing catalyst is supported on a second portion of the inner wall of the inlet-side passage downstream of the first portion. A second NOx reducing catalyst is supported on a third portion of an inner wall of a cell passage on the outlet side where the third portion overlaps with the first portion in a direction of intersection with the exhaust flow into the exhaust filter or is downstream of the first portion. An oxidation catalyst is supported on a fourth portion of the inner wall of the outlet-side passage downstream of the third portion where the fourth portion overlaps with the second portion in the direction of intersection or is downstream of the second portion. | 09-06-2012 |
20120240561 | EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE - An exhaust purification system of an internal combustion engine which is controlled so that a combustion air-fuel ratio becomes lean at the time of ordinary operation, provided with an adsorption part which adsorb unburned fuel which is contained in exhaust gas and an oxidation part which has catalyst particles of a metal which oxidizes carbon monoxide. The adsorption part includes zeolite which substantially adsorbs the lower olefins which are contained in the exhaust gas. The adsorption part and the oxidation part are arranged so that the exhaust gas contacts the adsorption part, then contacts the oxidation part. | 09-27-2012 |
20120285148 | CATALYST DEVICE - A catalyst device has a wall flow-type substrate. The substrate is formed of a porous base material. An SCR catalyst for reduction of NOx is supported in pores in the interior of the base material. The surface of the base material on a diesel engine side is coated with a trapping layer that traps PM in an exhaust gas. The surface of the substrate on a side opposite to the diesel engine side is coated with an oxidation catalyst layer that is formed of an oxidation catalyst. | 11-15-2012 |
20130000283 | SYSTEM FOR PURIFYING EXHAUST GAS AND EXHAUST SYSTEM HAVING THE SAME - A system for purifying an exhaust gas and an exhaust system having the same while preventing degradation of a selective reduction catalyst may include an exhaust pipe connected to an engine, the exhaust gas generated at the engine passing through the exhaust pipe, a particulate filter mounted on the exhaust pipe, coated with a selective reduction catalyst adapted to reduce nitrogen oxides contained in the exhaust gas by an injection of a reducing agent, and adapted to trap particulate matters contained in the exhaust gas, and one or more injectors adapted to inject the reducing agent and/or oxygen storage capacity material together or separately into the exhaust gas passing through the exhaust pipe. | 01-03-2013 |
20130019589 | EXHAUST AFTERTREATMENT SYSTEM FOR COMPRESSION-IGNITION ENGINES - An internal combustion engine configured to operate in a compression-ignition combustion mode includes an exhaust aftertreatment system. The exhaust aftertreatment system includes a catalyst device fluidly coupled upstream of an ammonia-selective catalytic reduction device. The, catalyst device includes first, second, and third elements fluidly coupled in series. The first element includes a three-way catalytic element, the second element includes a NOx adsorber, and the third element includes an oxidation catalytic element. | 01-24-2013 |
20130104529 | EXHAUST GAS EMISSION CONTROL SYSTEM FOR DIESEL ENGINE | 05-02-2013 |
20130133313 | DIESEL PARTICULATE FILTERS HAVING A WASHCOAT THAT IMPROVES FILTER PERFORMANCE - Aspects of the invention include Diesel Particulate Filters (DPF) that include a layer of inert particles some of which are in contact with a catalyst and are associated with the surface of the filter. Particles associated with the inlet side of the filter are sized such that they coat portions of the inlet surface and portions of the channels that connect the inlet surface to the wall separating the inlet surface from the outlet surface. In some aspects the particles comprise alumina of between about 1.0 microns to about 40.0 microns and colloidal alumina particles that are between about 1.0 nm to about 10.0 mu. The coating is applied by contacting the filter body especially the inlet channels of the filter body with a washout that includes the different sized particles and at least one catalyst that facilitates the conversion of soot particles into gases. | 05-30-2013 |
20130180231 | EXHAUST AFTERTREATMENT SYSTEM - In one exemplary embodiment of an exhaust aftertreatment system, the system includes an oxidation catalyst configured to receive an exhaust gas flow from an internal combustion engine and a particulate filter positioned downstream of the oxidation catalyst, the particulate filter comprising a substrate. The system also includes a nitrogen oxide adsorbing catalyst applied to a downstream portion of the substrate and a selective catalytic reduction device positioned downstream of the nitrogen oxide adsorbing catalyst, wherein the selective catalytic reduction device is configured to remove nitrogen oxides from the exhaust gas flow. | 07-18-2013 |
20130227936 | HYDRAULIC DRIVE SYSTEM FOR CONSTRUCTION MACHINE HAVING EXHAUST GAS PURIFICATION DEVICE - A hydraulic drive system executing load sensing control is capable of efficiently combusting and removing filter deposits inside an exhaust gas purification device by pump output power increasing control when there is no actuator operation, eliminating interference between the actuator operation and the pump output power increasing control. A first solenoid selector valve selects between tank pressure and delivery pressure of a pilot pump. A second solenoid selector valve is arranged in a line leading the output pressure of a differential pressure reducing valve to an LS control valve for selecting between enabling and disabling of the load sensing control. When the exhaust gas purification device needs regeneration, a controller executes switching to make the first solenoid selector valve output the delivery pressure of the pilot pump as dummy load pressure and to make the second solenoid selector valve disable the load sensing control. | 09-05-2013 |
20130255236 | EXHAUST GAS PROCESSING DEVICE FOR DIESEL ENGINE - 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 J | 10-03-2013 |
20130269325 | MULTI-TIERED TELESCOPE SHAPED ATOMIZER - In one example, a system is provided, comprising an exhaust reductant injector upstream of a mixer. The mixer includes a plurality of concentrically smaller rings interconnected via fins having a width varying in a flow direction, the fins arranged annularly, and with a first set of fins between a first pair of adjacent rings angularly offset from a second set of fins between a second pair of adjacent rings, the first and second pairs of rings sharing one common ring. In this way, it is possible to atomize, redirect, and mix the exhaust flow over a short distance to effectively react with NOx in a downstream SCR catalyst. | 10-17-2013 |
20130269326 | EXHAUST SYSTEM WITH HC ADSORBER AND PARALLEL EXHAUST-GAS CATALYTIC CONVERTER, AND VEHICLE HAVING AN EXHAUST SYSTEM OF SAID TYPE - The invention relates to an exhaust system ( | 10-17-2013 |
20130291524 | EXHAUST GAS AFTER-TREATMENT DEVICE FOR DIESEL ENGINE - An exhaust gas after-treatment device for a diesel engine is provided. The exhaust gas after-treatment device comprises an oxidation treatment unit having a diesel oxidation catalyst (DOC), an adsorption treatment unit having a diesel particulate filter (DPF), and a discharge unit for discharging exhaust gas that is filtration-treated through the oxidation treatment unit and the adsorption treatment unit, wherein the DOC of the oxidation treatment unit is provided with a baffle on the front thereof for even diffusion-introduction of exhaust gas. | 11-07-2013 |
20130340413 | EXHAUST SYSTEM INCLUDING NOx REDUCTION CATALYST AND EGR CIRCUIT - An exhaust system for a vehicular lean burn internal combustion engine that emits oxides of nitrogen (NOx) and particulate matter (PM) is disclosed. The system comprises a NOx reduction catalyst for reducing NOx in the presence of a reductant, means for introducing reductant into a flowing exhaust gas and a source of hydrocarbon reductant, a nitrogenous reductant, and/or hydrogen, a filter for removing PM from exhaust gas flowing in the exhaust system and a low pressure exhaust gas recirculation (EGR) circuit for connecting the exhaust system downstream of the filter to an air intake of the engine. The EGR circuit comprises a IMOx adsorber catalyst (NAC) comprising a NO adsorbent. | 12-26-2013 |
20140090364 | EXHAUST GAS TREATMENT DEVICE FOR USE NEAR AN ENGINE AND MOTOR VEHICLE HAVING THE DEVICE - An exhaust gas treatment device includes at least a housing and a second exhaust gas treatment unit which is disposed at a distance from the housing and extends into the housing. The housing has an opening that is disposed laterally relative to the second exhaust gas treatment unit and extends laterally at least across 50% of the second exhaust gas treatment unit which extends into the housing. A motor vehicle having the exhaust gas treatment device is also provided. | 04-03-2014 |
20140116033 | EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE - 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 a Hammett acidity function smaller than −0.83 and larger than −12 in the standard state. 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. | 05-01-2014 |
20140116034 | EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE - 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 an ash atomization agent. 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. | 05-01-2014 |
20140196444 | REDUCTANT AQUEOUS SOLUTION MIXING DEVICE AND EXHAUST AFTERTREATMENT DEVICE PROVIDED WITH THE SAME - A mixing device of an exhaust aftertreatment device includes: an elbow pipe attached to an outlet pipe of a filter device; a straight pipe connected to a downstream side of the elbow pipe to extend in a direction intersecting an axial line of the outlet pipe; and an injector attached to the elbow pipe, the injector injecting a reductant aqueous solution into inside the elbow pipe toward the straight pipe. The elbow pipe includes: an inlet connected with the outlet pipe; an outlet connected with the straight pipe; a direction-changing section provided between the inlet and the outlet; and an injector attachment provided outside the direction-changing section and attached with the injector. The injector attachment is offset toward the outlet. The direction-changing section includes a first bulging portion provided by bulging outward a portion thereof opposite to the injector attachment. | 07-17-2014 |
20140216016 | EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE - 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. | 08-07-2014 |
20140216017 | CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - 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 NO | 08-07-2014 |
20140245724 | EXHAUST PURIFICATION CATALYST, EXHAUST EMISSIN CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE, AND EXHAUST GAS PURIFICATION FILTER - 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 ( | 09-04-2014 |
20140250870 | EXHAUST TREATMENT UNIT - 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. | 09-11-2014 |
20140260211 | Cyclone Particulate Filtration For Lean Burn Engines - 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. | 09-18-2014 |
20140260212 | DEVICE FOR PROVIDING REDUCING AGENT AND MOTOR VEHICLE HAVING THE DEVICE - 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. | 09-18-2014 |
20140331656 | Air Handling Constructions With Turbo-Compounding For Opposed-Piston Engines - An opposed-piston engine has an air handling system equipped with a turbo-compound system that includes a power turbine for producing a rotary output in response to a flow of exhaust gas flowing into the turbine. The rotary output is connected to a crankshaft or other rotating element of the opposed-piston engine for converting some of the exhaust gas energy into mechanical energy supplied to the crankshaft. | 11-13-2014 |
20140360171 | Catalyst With Improved Hydrothermal Stability - A catalyst for the treatment of exhaust gas emissions is disclosed. The catalyst can comprise ceria-alumina particles having a ceria phase present in a weight percent of the composite in the range of about 20% to about 80% on an oxide basis, an alkaline earth metal component supported on the ceria-alumina particles, wherein the CeO | 12-11-2014 |
20140366514 | PREMIXER CONDUIT FOR EXHAUST AFTERTREATMENT SYSTEM - An exhaust aftertreatment system is disclosed. The exhaust aftertreatment system includes a premixer conduit that defines an exhaust flow path, a baffle disposed in the exhaust flow path, and a reductant injector in fluid communication with the exhaust flow path. The baffle is positioned in the premixer conduit, which includes a premixer inlet, a transition section, and a premixer outlet. The transition section is disposed between the premixer inlet and the premixer outlet. The premixer inlet is in fluid communication with the engine. The reductant injector is positioned downstream of the baffle and upstream of the premixer outlet. | 12-18-2014 |
20140373513 | HONEYCOMB BODY FOR EXHAUST-GAS AFTERTREATMENT, METHOD FOR PRODUCING A HONEYCOMB BODY AND MOTOR VEHICLE HAVING A HONEYCOMB BODY - A honeycomb body for exhaust gas aftertreatment includes a first end face, a second end face, a central axis that penetrates the two end faces and a length. The honeycomb body has at least one at least partially structured metallic layer which is disposed about the central axis. A structure of the at least one metallic layer has elevations and depressions which extend at least over part of the length of the honeycomb body and run obliquely to the central axis. At least one metallic connecting strip is provided between adjacent regions of the at least one metallic layer. The metallic connecting strip is shorter than the length of the honeycomb body and forms a brazed connection or welded connection to the adjacent regions. A method for producing such a honeycomb body and a motor vehicle having the honeycomb body are also provided. | 12-25-2014 |
20150047328 | VEHICLE AND A METHOD OF UPDATING EFFICIENCY OF A SELECTIVE CATALYTIC REDUCTION FILTER OF AN EXHAUST TREATMENT SYSTEM OF THE VEHICLE - A vehicle and a method of updating efficiency of a selective catalytic reduction filter (SCRF) of an exhaust treatment system of the vehicle are disclosed. The method includes obtaining an initial calculated efficiency of the SCRF, via a controller, regarding one of a NOx conversion, a reductant absorption, a reductant desorption and a reductant oxidation. The method also includes determining a soot mass estimate in the SCRF representative of an amount of soot collected inside the SCRF and determining a soot correction factor from the soot mass estimate. The method further includes calculating, via the controller, an updated efficiency value of the SCRF by multiplying the soot correction factor and the initial calculated efficiency to update efficiency of the SCRF. | 02-19-2015 |
20150059321 | PARTICULATE FILTER - An object of the invention is to suppress deposition of ash in a wall-flow particulate filter while curtailing drops in a trapping rate of PM. To attain the above object, the invention provides a wall-flow particulate filter delimited by porous partition walls having pores of a size that allows ash and ash aggregates to pass therethrough. In the filter, a coat layer having pores smaller than the pores of the partition walls is provided, at a region of the partition walls, from an upstream end thereof up to a position before a downstream end thereof. | 03-05-2015 |
20150089930 | DIESEL ENGINE - It is an object of the present invention to provide a diesel engine in which a DPF case and an SCR catalyst case can be placed compactly. The diesel engine includes an engine body, the DPF case and the SCR catalyst case, a DPF is accommodated in the DPF case, an SCR catalyst is accommodated in the SCR catalyst case, and the DPF case and the SCR catalyst case are mounted on the engine body. The SCR catalyst case is placed in a direction which extends along the DPF case. The DPF case is placed directly above a flywheel housing and right behind a cylinder head cover, and the SCR catalyst case is placed directly above the cylinder head cover. | 04-02-2015 |
20150089931 | EXHAUST GAS TREATMENT DEVICE - An exhaust gas treatment device ( | 04-02-2015 |
20150113965 | EXHAUST SYSTEM FOR A DIESEL ENGINE - An exhaust gas system for a diesel engine comprises a filter | 04-30-2015 |
20150121856 | EXHAUST-GAS AFTERTREATMENT SYSTEM - An exhaust-gas aftertreatment system including an exhaust-gas module which has an inlet section and an outlet section. The exhaust-gas aftertreatment system has at least one sensor fastening device which comprises at least two, preferably at least three, sensor fastening means that are angularly spaced apart from one another. | 05-07-2015 |
20150135686 | Working Vehicle - A work vehicle includes a Diesel Particulate Filter DPF and a Selective Catalytic Reuction SCR connected to one another and disposed upwardly of an engine mounted in an engine room covered by a hood located forwardly of a driving operation section, the DPF and the SCR being disposed in juxtaposition in a vehicle body transverse direction. | 05-21-2015 |
20150306950 | ENGINE DEVICE - An engine device in which a first case and a second case can be installed in a compact manner while preventing a decrease of temperature of the first case and the second case due to cooling air for an engine. The engine device is equipped with the first case for removing particulate matter in exhaust gas of the engine, and the second case for removing nitrogen oxide in the exhaust gas of the engine. The first case and the second case are disposed on the upper surface side of the engine at a position higher than an air flow path of a cooling fan of the engine. The second case is disposed at a position higher than the first case. | 10-29-2015 |
20150337702 | EXHAUST AFTERTREATMENT SYSTEM WITH LOW-TEMPERATURE SCR - An aftertreatment system may treat exhaust gas discharged from an engine. The system may include first and second selective-catalytic-reduction (SCR) catalysts and a valve. The valve may be disposed upstream of the first SCR catalyst and at least one of an oxidation catalyst and a particulate filter. The valve is connected to first and second exhaust flow paths and is movable between a first position allowing exhaust gas to flow through the first flow path and bypass the second flow path and a second position allowing exhaust gas to flow through the second flow path and bypass the first flow path. The second SCR catalyst may be a low-temperature SCR catalyst and may be disposed in the second flow path. A control module may cause the valve to move between the first and second positions based on a temperature of the exhaust gas and/or a temperature of the engine. | 11-26-2015 |
20150345360 | EXHAUST TREATMENT UNIT - An exhaust treatment unit treats an exhaust gas from an engine of a work vehicle. The exhaust treatment unit includes a diesel particulate filter device, a selective catalytic reduction device, and a connection pipe. The diesel particulate filter device treats the exhaust gas. The selective catalytic reduction device treats the exhaust gas. The connection pipe connects the diesel particulate filter device and the selective catalytic reduction device. The connection pipe includes a plurality of spherical joints, a first pipe part on a first end, and a second pipe part on a second end. The plurality of spherical joints include a first spherical joint mounted between the first pipe part and the diesel particulate filter device, a second spherical joint mounted between the second pipe part and the selective catalytic reduction device, and a third spherical joint mounted between the first and second pipe parts. | 12-03-2015 |
20150361848 | EXHAUST AFTERTREATMENT SYSTEM FOR A COMPRESSION-IGNITION ENGINE - An exhaust aftertreatment system for purifying exhaust gases from a compression-ignition engine includes a first exhaust aftertreatment device including an oxidation catalyst and a particulate filter element fluidly coupled to an exhaust outlet of the engine. A second exhaust aftertreatment device includes an ammonia-selective catalytic reduction catalyst fluidly coupled to a downstream outlet of the first exhaust aftertreatment device. A reductant injection system is configured to inject urea reductant into the exhaust gas feedstream between the first exhaust aftertreatment device and the second exhaust aftertreatment device. | 12-17-2015 |
20150369103 | ENGINE UNIT AND WORK VEHICLE - Two sets of assemblies are arranged such that a diesel particulate filter device of the assembly, a selective catalytic reduction device of the assembly, a selective catalytic reduction device of the assembly, and a diesel particulate filter device of the assembly are located next to each other in this order. Exhaust tubes are provided to extend upward from gas outlets of the selective catalytic reduction device of the assembly and the selective catalytic reduction device of the assembly. The two exhaust tubes are located on a virtual plane orthogonal to longitudinal directions of the selective catalytic reduction devices of the assemblies. Thereby, an air intake position for an engine can be easily set to a position from which exhaust gas from the engine is less likely to be taken in, in a configuration provided with two sets of assemblies. | 12-24-2015 |
20160017778 | ENGINE DEVICE OF WORKING VEHICLE - An engine device of a working vehicle is structured such that a first case and a second case can be firmly fixed with a high rigidity by making good use of a frame of an engine room. In the engine device of the working vehicle having the first case which removes particulate matter in exhaust gas of the engine and the second case which removes nitrogen oxide in the exhaust gas of the engine, the first case is provided in the engine room which is inward provided with the engine, via a first case support body, and the second case is provided in the engine room via second case support bodies. | 01-21-2016 |
20160040572 | EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE - An exhaust gas purification device includes a diesel particulate filter (DPF) for capturing particulate matter (PM) in an exhaust gas, a selective catalytic reduction (SCR) device for reducing NOx in the exhaust gas, detecting units for detecting the DPF electrostatic capacity, an estimating unit for estimating the inside temperature of the DPF based on the electrostatic capacity, and a controlling unit for executing forced DPF regeneration. A lower limit temperature is defined as a temperature to trigger PM combustion, and an upper limit temperature is defined as a temperature to avoid filter erosion. The controlling unit executes the forced regeneration with an amount of fuel supplied for causing the inside temperature to reach the lower limit temperature, when the inside temperature is at or above the SCR activation temperature, and executes the forced regeneration with another amount of fuel supplied for causing the inside temperature to reach the upper limit temperature, when the inside temperature is below the SCR activation temperature. | 02-11-2016 |
20160040573 | EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE - An exhaust gas purification device for an internal combustion engine, wherein an amount of fuel supply during a forced regeneration is optimized, and a fuel efficiency is effectively improved. The device includes a filter in an exhaust passage of the internal combustion engine for collecting particulate matter in an exhaust gas, an electrostatic capacity detecting unit that detects an electrostatic capacity of the filter, and a filter regenerating unit that supplies fuel to the filter and executes a forced regeneration to burn and remove the particulate matter in the filter. The filter regenerating unit stops supplying fuel when a rate of decrease in the detected electrostatic capacity per predetermined period of time reaches or falls below a predetermined lower threshold, which indicates a drop in burning efficiency of the particulate matter, while the forced regeneration is being executed. | 02-11-2016 |
20160053643 | MULTI-LOBED SOOT BLOWER - An exhaust after-treatment system including at least one exhaust treatment component ( | 02-25-2016 |
20160061090 | Emissions Cleaning Module - An emissions cleaning module includes a first and second conduit. The first conduit contains a diesel oxidation catalyst (DOC) module and a diesel particulate filter (DPF) module; the second conduit contains a selective catalytic reduction (SCR) module. The emissions cleaning module is mounted to an external support by means of a mounting mechanism including at least one adjustable strap which is clamped around a conduit; and at least one saddle which is mounted to the conduit by the at least one adjustable strap. The saddle includes a curved upper surface configured to conform substantially to a portion of the conduit. | 03-03-2016 |
20160108784 | WHITE SMOKE REDUCTION SYSTEM FOR DIESEL VEHICLE - A white smoke reduction system for a diesel vehicle reduces white smoke generated from a diesel vehicle. The white smoke reduction system includes a diesel oxidation catalyst (DOC) mounted on an exhaust line connected to an engine to oxidize exhaust gas through a catalyst. A filter module is connected to a rear end of the DOC to collect particulate matter contained in the exhaust gas and is coated with a ceria (CeO | 04-21-2016 |
20160201537 | Exhaust System with Zone Coated Catalyst | 07-14-2016 |
20160251994 | PARTICULATE COLLECTION SYSTEM AND PARTICULATE COLLECTION APPARATUS | 09-01-2016 |