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Mixture is exhaust from internal-combustion engine

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423 - Chemistry of inorganic compounds


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Class / Patent application numberDescriptionNumber of patent applications / Date published
423213200 Utilizing as solid sorbent, catalyst, or reactant a material containing a transition element 194
20120183459APPARATUS, SYSTEM, AND METHOD FOR FILTRATION OF A DOSING FLUID IN AN EXHAUST AFTERTREATMENT SYSTEM - An apparatus, system, and method are disclosed for a filter for filtering a dosing fluid in an exhaust aftertreatment system. The filter may comprise a dosing tank configured to contain a dosing fluid, a filter media disposed within the dosing tank, and a support structure supporting the filter media to form a pathway for a flow of dosing fluid. Beneficially, the apparatus, system, and method of the present invention reduce the cost of operation and manufacture of the SCR system.07-19-2012
20130045148Flow Modulating Substrates For Early Light-Off - An exhaust gas after-treatment system includes at least first and second substrates. The first substrate has a first region and a second region circumferentially surrounding the first region. The first region of the first substrate has a higher average cell density than the average cell density of the second substrate. The system can also include at least a third substrate.02-21-2013
20100143222EXHAUST CONDENSATE REMOVAL APPARATUS FOR ABATEMENT SYSTEM - Exhaust condensate removal apparatuses for abatement systems and methods of removing exhaust condensate from abatement systems are described. An exhaust condensate removal apparatus includes a cabinet exhaust and a process gas exhaust, the process exhaust openly cross-exchanged with the cabinet exhaust. Another exhaust condensate removal apparatus includes a cabinet exhaust and a process gas exhaust, the process exhaust closedly cross-exchanged with the cabinet exhaust.06-10-2010
20130028817DIESEL EXHAUST FLUID FORMULATION HAVING A HIGH AMMONIUM CONTENT AND A LOW FREEZING POINT - A mixture of urea, water and ammonium carbamate is formulated for use in the catalytic reduction of oxides of nitrogen in diesel exhaust. The mixtures may be formulated to optimize the amount of reductant in the mixture and the freezing point of the formulation. These formulations are especially useful in combination with Selective Catalytic Reduction systems and are well suited for use on heavy-duty trucks and heavy duty equipment used off-road. Some of these formations include between about 15.0 wt. % to about 40.0 wt. % urea; between about 15.0 wt. % to about 40.0 wt. % ammonium carbamate; and between about 40.0 wt. % to about 60.0 wt. % water. The formulation may be monitored for ammonia content and/or freezing point and the composition of the formulation may be adjusted to optimize the freezing point and ammonia content.01-31-2013
20130028819CATALYTIC CONVERTER APPARATUS - A catalytic converter apparatus for use in an exhaust system of an internal combustion engine includes a housing having a gas inlet and a gas outlet, and at least one catalytic substrate element disposed in the housing. The at least one substrate element is divided into a plurality of zones or sections, the zones at least partially separated from one another to inhibit heat flow. The zones can be at least partially separated with walls. The walls can include insulating material for reducing the mobility of heat radially outwardly. Each of the zones defines a generally separate flow passage connecting the inlet and outlet in fluid communication. The apparatus can heat more rapidly from a cold start compared with conventional catalytic converters.01-31-2013
20130028818METHOD OF DEPLETING NITROUS OXIDE IN EXHAUST GAS AFTER-TREATMENT FOR LEAN-BURN ENGINES - The present invention relates to a method for exhaust gas after-treatment for essentially lean-burn internal combustion engines and also a corresponding advantageous exhaust gas after-treatment system. In particular, the present invention relates to reducing the proportion of the greenhouse gas N20 in the total exhaust gas from a corresponding internal combustion system using at least one NOx storage catalyst as exhaust gas purification element. The objective of the invention is to operate the N20 depletion catalyst located downstream of the NOx storage catalyst under lambda=<1 conditions when the N20 formed by the NOx storage catalyst reaches the N20 depletion catalyst.01-31-2013
20130052107EXHAUST GAS PURIFICATION APPARATUS OF AN INTERNAL COMBUSTION ENGINE - A technique that, in an exhaust gas purification apparatus of an internal combustion engine, can avoid a decrease in a NOx purification rate by adding a reducing agent as continuously as possible, while avoiding NH02-28-2013
20090148368AIR POLLUTION CONTROL - In a method of controlling air pollution, a combustion gas is passed through a slurry of an alkaline-earth metal sulfide and a redox buffer (e.g., a phosphate), preferably in combination with an alkaline-earth metal carbonate and/or hydroxide. A composition for removing a heavy metal from a combustion gas is also provided, as an aerosolized, aqueous dispersion or slurry of an alkaline-earth metal sulfide and a buffering agent. A solid residue of the air pollution control process is also described.06-11-2009
20090257932FLUE GAS DESULFURIZATION PROCESS - A process for desulfurizing an SO10-15-2009
20130064744HEATED INJECTION SYSTEM FOR DIESEL ENGINE EXHAUST SYSTEMS - Embodiments for injecting reducing agents are provided. In one example, an injection device for feeding reducing agents into an exhaust-gas purification system of an internal combustion engine for reduction of nitrogen oxide emissions comprises an injector, and an evaporation device for evaporating first and second reducing agents, the injection device connected to in each case one storage vessel for the first reducing agent and a storage vessel for the second reducing agent, the first and second reducing agents liquid at room temperature.03-14-2013
20090010829Reducing Agent Composition - The invention relates to a reducing agent composition for use in the catalytic reduction process of nitrogen oxides in exhaust gases, the composition containing 20-40 w % of urea, 19-40 w % of ammonium formate, and water.01-08-2009
20120107202PROCESS FOR MINIMISING THE EMISSION OF PARTICULAR MATTER FROM MARINE DIESEL ENGINES - The present invention provides a process for minimizing the emission of particulate matter and precursors thereof from a flue gas stream of an engine comprising particulate matter and precursors thereof and at least one gaseous component, which process comprises the steps of: a. Obtaining a flue gas stream of an engine comprising particulate matter and precursors thereof; b. Increasing the moisture content of the stream by contacting the same with a first aqueous medium in an amount and at a temperature at which at least 50% of the water content of the first aqueous medium is evaporated; whereby a moisture laden gas stream, optionally containing suspension droplets, is formed; c. Cooling the moisture laden gas stream whereby suspension droplets are formed; and d. Applying a centrifugal force to the moisture laden gas stream and to the suspension droplets to effect the swirling thereof; whereby a treated gaseous stream and an aqueous stream are formed; and wherein the content of particulate matter in the treated gaseous stream is reduced by at least 50% compared with that in the hot gas stream as measured by cooling to about 50° C. with no further treatment and wherein the centrifugal force in step d is characterized in that the velocity of the moisture laden gas stream is between 20 m/sec and 120 m/sec.05-03-2012
20130216459LOWER TEMPERATURE MIXING ZONE FOR NH3 - A method fluidly coupling components of an exhaust gas treatment system to an exhaust gas system, then injecting gaseous ammonia into the gas treatment system, beginning reaction of gaseous ammonia with exhaust gas at a temperature of less than about 180° C., preferably about 150° C., and then continuing reaction of gaseous ammonia with exhaust gas during operation of the vehicle, is disclosed. The gas treatment system includes a mixing chamber for reacting gaseous ammonia with exhaust gas to reduce NO08-22-2013
20130121901ARRANGEMENT AND METHOD FOR CONTROLLING THE QUANTITY OF A REDUCTANT INTRODUCED INTO AN EXHAUST LINE OF AN INTERNAL COMBUSTION ENGINE - An arrangement for controlling injection of a reducing agent in an exhaust line of a combustion engine (05-16-2013
20090317314Particle 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. Differing flow regions having different flow conditions are formed in the particle separator. The differing flow regions are configured such that essentially particles having different, defined sizes and/or masses are adapted to be separated out of the exhaust gas stream in the differing flow regions. The exhaust gas stream is adapted to flow through at least portions of the particle separator.12-24-2009
20120141344Flow-Through Structure with Active Ingredients - The present disclosure describes systems and methods for making an active bed for use in catalyst, filter or other chemical processing systems. A fluidic substrate material is combined with one or more active ingredients while in the fluid or substantially plasticized state. Acoustic energy is applied to the fluidic substrate and active ingredient mixture, and static pressure is applied as well. The pressure is released and the mixture is allowed to form porous fluid-permeable structures (sometimes a lattice) through which a fluid to be processed can be passed.06-07-2012
20110243818TEMPERATURE CONTROL CIRCUIT FOR SCR UREA SYSTEM - A system may include a urea injection device, first, second and third conduits and a valve. The first conduit may contain a fluid and may be in heat transfer relation with the urea injection device. The second conduit may be in selective fluid communication with the first conduit. The third conduit may be in selective fluid communication with the first conduit and in heat transfer relation with a heat source. The valve may be connected to the first, second and third conduits and may be movable between first and second positions. The first position may allow fluid communication between the first and third conduits and restrict communication between the first and second conduits. The second position may allow fluid communication between the first and second conduits and restrict fluid communication between the first and third conduits.10-06-2011
20110008228USE OF AQUEOUS GUANIDINIUM FORMATE SOLUTIONS FOR THE SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES IN EXHAUST GASES OF VEHICLES - The invention relates to the use of aqueous guanidinium formiate solutions, optionally combined with urea and/or ammonia and/or ammonium salts, for the selective catalytic reduction of nitrogen oxides using ammonia in exhaust gases of vehicles. The inventive guanidinium formiate solutions enable a reduction of the nitrogen oxides by approximately 90%. Furthermore, said guanidinium formiate solutions can enable an increase in the ammonia forming potential from 0.2 kg, corresponding to prior art, up to 0.4 kg ammonia per litre of guanidinium formiate, along with freezing resistance (freezing point below −25° C.). The risk of corrosion of the inventive guanidinium formiate solutions is also significantly reduced compared to that of solutions containing ammonium formiate.01-13-2011
20120148464EXHAUST-GAS AFTERTREATMENT SYSTEM WITH CATALYTICALLY ACTIVE WALL-FLOW FILTER WITH STORAGE FUNCTION UPSTREAM OF CATALYTIC CONVERTER WITH IDENTICAL STORAGE FUNCTION - The present invention relates to an exhaust-gas aftertreatment system which comprises a preferably catalytically active particle filter (wall-flow filter) which is followed in turn by a throughflow monolith (flow-through monolith) which is preferably provided with a catalytically active function. Both components have the same storage functions for gaseous substances present in the exhaust gas of internal combustion engines. The system is suitable in particular for the simultaneous removal of particles and pollutants from the exhaust gas of both predominantly lean-operated internal combustion engines and also of internal combustion engines operated predominantly with a stoichiometric air/fuel mixture. Likewise described is a process for the production and the use of such a system for exhaust-gas aftertreatment.06-14-2012
20090324469Zero platinum group metal catalysts - The present invention relates improving the performance of nitrogen oxide reduction by exposing rich exhaust to catalysts systems comprising a catalyst, wherein the catalyst systems are free of platinum group metals. The present invention also relates to improving reduction of carbon monoxide and hydrocarbon in exhaust by introducing air into a portion of the exhaust between a first catalyst system and a second catalyst system. The present invention also relates to improving nitrogen oxide, carbon monoxide and hydrocarbon reduction by (1) exposing rich exhaust to a first catalysts system, wherein the exhaust has an R value of greater than 1.0 and the first catalyst system comprises a catalyst and is free of platinum group metals and (2) introducing air into a portion of the exhaust in between the first catalyst system and a second catalyst system, wherein the second catalyst system is free of platinum group metals.12-31-2009
20120308455DEVICE HAVING AN INJECTOR FOR A LIQUID REDUCING AGENT, CONFIGURATION HAVING THE DEVICE AND METHODS OF USING THE DEVICE AND THE CONFIGURATION - A device includes an injector for a liquid having at least one pressure sensor, preferably an integrated pressure sensor. The device is used, in particular, for adding liquid reducing agent to an exhaust gas line of a motor vehicle. A configuration having the device and methods of using the device and the configuration are also provided.12-06-2012
20110305612NOX STORAGE CATALYST WITH IMPROVED HYDROCARBON CONVERSION ACTIVITY - Described is a nitrogen oxide storage catalyst comprising: 12-15-2011
20120039779METHOD FOR FEEDING REDUCING AGENT INTO AN EXHAUST GAS SYSTEM AND CORRESPONDING EXHAUST GAS SYSTEM AND MOTOR VEHICLE - A method for feeding reducing agent or reducing agent precursor into exhaust systems of mobile internal combustion engines and an exhaust system are preferably used for internal combustion engines with high nitrogen oxide compound emissions. A feed time is established. An exhaust parameter and/or necessary quantity of reducing agent is determined and a feed state of the reducing agent is defined. The reducing agent is treated if the feed state does not correspond to a stored state. The reducing agent feed to the exhaust system takes place last. The steps are repeated multiple times. This permits reducing agent to be fed into an exhaust system in a state suitable for the exhaust temperature, so that complete conversion of reducing agent takes place and selectively catalytic reduction is also ensured. This reduces the quantity of electrical energy necessary for converting reducing agent. A motor vehicle having the system is also provided.02-16-2012
20110064632Staged Catalyst System and Method of Using the Same - One aspect of the present invention is directed to a staged catalyst system for reducing gases in the exhaust from a combustion engine. In one embodiment, the staged catalyst system includes an integrated particulate filter block supporting thereupon a first selective catalytic reduction catalyst; and a flow-through catalyst block supporting thereupon a second selective catalytic reduction catalyst, wherein the integrated particulate filter block is disposed downstream of the combustion engine and upstream of the flow-through catalyst block.03-17-2011
20120045378METHOD AND DEVICES FOR HEATING UREA-CONTAINING MATERIALS IN VEHICLE EMISSION CONTROL SYSTEM - The invention relates to systems and methods for heating a solid or liquid reducing material such as an urea-containing material for NO02-23-2012
20110182789EXHAUST GAS AFTERTREATMENT SYSTEM - An exhaust gas post treatment system for, in particular, a self-igniting internal combustion engine including a catalytic converter that is arranged in an exhaust gas line, a fine particle filter and an introduction device for a reduction agent arranged upstream of the catalytic converter in the direction of the flow of the exhaust gas, and to a method for operating said type of exhaust gas post treatment system. An exhaust gas post treatment system and a method for operating said type of system that is simple to use and compact. This is achieved by virtue of the fact that the catalytic converter is a reductively or oxidatively operated catalytic converter, or that the introduction device, the catalytic converter, that can be operated reductively or oxidatively, and the fine particle filter are arranged in said sequence and in the exhaust line in the direction of flow.07-28-2011
20080286183Control of combustion system emissions - A process for capturing undesirable combustion products produced in a high temperature combustion system. Very finely sized particles of alkaline earth carbonates or hydroxides, with or without added ground fly ash, are provided in slurry form and are injected into the high temperature zone of a furnace. The particles flash calcine to provide substantially unagglomerated particles having a particle size of less than about 0.5 microns to capture and neutralize SOx, NOx, and toxic chemicals.11-20-2008
20120258030GAS SEPARATION AND RECOVERY APPARATUS AND GAS SEPARATION AND RECOVERY METHOD - A gas separation and recovery apparatus that separates and recovers nitrogen oxides from a gas mixture includes: a liquid storing portion that stores a liquid, the liquid absorbing the nitrogen oxides; a gas-liquid contacting portion in which the liquid and the gas mixture contact with each other; and a liquid recovering portion that recovers the liquid after the liquid contacts the gas mixture. The liquid is an ionic liquid that chemically absorbs the nitrogen oxides.10-11-2012
20120263632METHOD FOR DOSING AN UREA BASED REDUCING AGENT INTO A GAS EXHAUST STREAM - The present invention provides for a method for dosing an urea-based reducing agent into a exhaust gas stream generated from a combustion engine and addressed to an aftertreatment system, e.g. SCR or SCRT system. According to the method of the invention the gas exhaust stream is conveyed into a dosing housing which develops along a longitudinal axis. In particular the gas is conveyed by generating an annular inlet jet inclined with respect of said axis. The urea-based reducing agent is injected by generating, inside the housing, an urea-based reducing agent spray which is preferably coaxial to said axis of the housing.10-18-2012
20110123421ZONED CATALYZED SOOT FILTER - The present invention relates to a catalyzed soot filter which comprises a wall flow substrate with an inlet end, an outlet end, a substrate axial length extending between the inlet end and the outlet end, and a plurality of passages defined by internal walls of the wall flow substrate wherein the plurality of passages comprise inlet passages having an open inlet end and a closed outlet end, and outlet passages having a closed inlet end and an open outlet end, and wherein the internal walls of the inlet passages comprise a zoned first inlet coating, the internal walls of the outlet passages comprise a zoned first outlet coating, and wherein the first inlet coating and the first outlet coating are present on the wall flow substrate at a coating loading ratio of less than 0.5.05-26-2011
20120269705SYSTEM FOR SELECTIVE CATALYST REDUCTION - The invention relates to a system and method for selective catalyst reduction (SCR), where the addition of reducing agent is administered by a control portion and injected into a gas by an injection portion upstream of a catalyst portion. In some embodiments of the invention the injection portion comprises a plurality of injection nozzles.10-25-2012
20120269706Reduction of Particulate, NOx, and Ammonia Emissions - A method for controlling emissions from an engine includes reducing trapped nitrogen oxides to ammonia on an LNT catalyst while concurrently oxidizing soot accumulated on the LNT catalyst, and, flowing the ammonia so formed to an SCR catalyst.10-25-2012
20110236280METHOD FOR PURIFYING EXHAUST GAS AND SYSTEM THEREFORE - A method is provided for purifying exhaust gas from an engine having an exhaust passage with a selective reducing catalyst and an oxidation catalyst upstream of the selective reducing catalyst. The method calculates an amount of NOx that flows into the selective reducing catalyst; sets an amount of an additive agent to be supplied to the selective reducing catalyst based on the calculated amount of NOx; determines a degradation degree of the oxidation catalyst; determines whether a correction to the amount of the additive agent is necessary based on the determined degradation degree of the oxidation catalyst; corrects the amount of the additive agent to be supplied when the correction is necessary; and supplies the additive agent to the selective reducing catalyst in the corrected amount if the amount is determined to be corrected and in the uncorrected amount if the amount is determined not to be corrected.09-29-2011
20120321537COATING METHOD AND DEVICE - The invention relates to a novel coating device, the method carried out using said device, products obtained thereby, and use of said products.12-20-2012
20130011313Exhaust Gas Aftertreatment Installation and Method - An exhaust gas aftertreatment installment and associated exhaust gas aftertreatment method utilizes a nitrogen oxide storage catalytic converter and an SCR catalytic converter. A particulate filter is provided upstream of the nitrogen oxide storage catalytic converter or between the latter and the SCR catalytic converter or downstream of the SCR catalytic converter. The time of regeneration operating phases of the nitrogen oxide storage catalytic converter can be determined as a function of the nitrogen oxide content of the exhaust gas downstream of the nitrogen oxide storage catalytic converter or of the SCR catalytic converter and/or as a function of the ammonia loading of the latter. Moreover, a desired ammonia generation quantity can be determined for a respective regeneration operating phase. The installation and method are adopted for use for motor vehicle internal combustion engines and other engines which are operated predominantly in lean-burn mode.01-10-2013
20130017136EXHAUST GAS CONTROL APPARATUS AND METHOD FOR INTERNAL COMBUSTION ENGINEAANM Hirota; ShinyaAACI Susono-shiAACO JPAAGP Hirota; Shinya Susono-shi JPAANM Yamashita; YoshinoriAACI Kakegawa-shiAACO JPAAGP Yamashita; Yoshinori Kakegawa-shi JP - A NOx selective reduction catalyst for reducing NOx by the ammonia adsorbed is disposed in an engine exhaust gas passage. As states of adsorption of ammonia by the catalyst, there are a first adsorption state of ammonia that occurs when the ammonia is adsorbed during low temperature and a second adsorption state of ammonia that occurs when the ammonia is adsorbed or has already been adsorbed during high temperature. The amount of adsorbed ammonia in the first state is restricted to control concentration of the ammonia that is in the first state and desorbed when the temperature of the catalyst increases so as to be not higher than an allowable concentration, and that in the second state is restricted to control concentration of the ammonia that is in the second state and desorbed when the temperature of the catalyst increases so as to be not higher than an allowable concentration.01-17-2013
20110158871EXHAUST SYSTEM FOR A VEHICULAR POSITIVE IGNITION INTERNAL COMBUSTION ENGINE - An exhaust system for a vehicular positive ignition internal combustion engine comprises a filter for filtering particulate matter from exhaust gas emitted from the engine, which filter comprising a porous substrate having inlet and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a three-way catalyst washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, which is less than the first mean pore size, and a three-way catalyst washcoat disposed on a separate substrate monolith located upstream of the filter, wherein a mass of three-way catalyst washcoat on the upstream substrate monolith is ≦75% of the total mass of three-way catalyst washcoat in the exhaust system.06-30-2011
20130171050SYSTEM AND METHOD FOR INJECTING AMMONIA INTO AN EXHAUST GAS STREAM - A method for injecting ammonia into an exhaust gas stream downstream of a diesel engine includes providing an exhaust gas passageway (07-04-2013
20130115152CONTROL METHOD AND ARRANGEMENT FOR SELECTIVE CATALYTIC REDUCTION - A method for controlling a selective catalytic reduction system (SCR) exploiting a set of predetermined trigger events (05-09-2013
20130115151PROCESS FOR THE REMOVAL OF ACID GASES FROM THE AIR AND FROM COMBUSTION GASES FROM BURNERS AND INTERNAL COMBUSTION ENGINES BY MEANS OF ABSORPTION WITH SODIUM HYDROXIDE SOLUTION AND PROCESS FOR OBTAINING SODIUM CARBONATE IN ORDER TO ACQUIRE CARBON CREDITS - The present invention consists of an absorption process with a chemical reaction to capture acid gases such as carbon dioxide, sulphur dioxide and nitrogen dioxide from the ambient air and from combustion gases from burners and internal combustion engines using fossil fuels; the aim of the invention being the acquisition of carbon credits in accordance with the “Kyoto protocol on climate change”. The process is carried out in a horizontal spray absorber using an 8% solution of sodium hydroxide as absorption liquid, obtaining sodium carbonate, sodium sulphite, sodium nitrite and nitrate as byproducts. These byproducts are converted into commercial products such as calcium carbonate, barium sulphate and ammonium nitrate; for which purpose both the sodium sulphite and the sodium nitrite must previously be converted into sodium sulphate and nitrate by means of an oxidizing agent.05-09-2013
20130115150SCR CATALYST SYSTEM AND METHOD FOR THE OPERATION THEREOF - A SCR catalyst system, comprising a first SCR catalyst (05-09-2013
20130101485METHOD FOR CONTROLLING AN INJECTION DEVICE FOR FEEDING AN AMMONIA-RELEASING REDUCING AGENT INTO AN EXHAUST-GAS PURIFICATION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - The present disclosure relates to a method for controlling an injection device for feeding an ammonia-releasing reducing agent into an exhaust-gas purification system of an internal combustion engine for the purpose of reducing the nitrogen oxide emissions, wherein the exhaust-gas purification system comprises at least one SCR catalytic converter with n cells which are arranged in series in the exhaust-gas throughflow direction and in which ammonia can be stored.04-25-2013
20130136675Apparatus and method for purifying exhaust gases for combustion engines - An engine exhaust gas purification device comprising control unit having successively arranged switching device (05-30-2013
20100296989Molecular Conversion Processing of Greenhouse Gases of Global Warming Effect and Conversion Units Employing a Solid Particle Trap - Molecular conversion processing of greenhouse gases of global warming effect and conversion units employing a solid particle trap. This is an industrial process capable of changing the chemical composition of the greenhouse gases from any source, such as the internal combustion engine, factory chimney and others, through the conversion of gas molecules to form new compounds such as clean gases. This is done by molecular conversion processing conversion unit with a solid particle trap, consisting of a plasma conversion chamber (II) that produces a plasma jet, and an electrostatic filter (III) for the collection of solid particles.11-25-2010
20120282159EXHAUST GAS PURIFICATION APPARATUS AND METHOD FOR ENGINE AND FILTER REGENERATION SYSTEM OF THE EXHAUST GAS PURIFICATION APPARATUS - An exhaust gas purification apparatus for an engine is provided with a filter arranged in an exhaust passage of the engine, and a regeneration control unit for regenerating the filter by burning the particulate matters accumulated in the filter. The control unit may include an over-accumulation state determination unit and a switch. The over-accumulation state determination unit determines over-accumulation of the particulate filter in the filter when the particulate matter is over-accumulated in the filter. The switch switches a regeneration temperature for regenerating the filter between a first regeneration temperature at which a normal regeneration is performed and a second regeneration temperature which is lower than the first regeneration temperature. The control unit is connectable to a command unit when the particular matter is over-accumulated in the filter, so that the switch is forcibly operated toward the second regeneration temperature.11-08-2012
20120003131INTEGRATED DIESEL PARTICULATE FILTER AND ELECTRIC LOAD BANK - An apparatus for dissipating energy into the exhaust gas of an internal combustion engine includes a container for confining a flow path for exhaust gas from an internal combustion engine where the container has an inlet and an outlet. A porous, electrically conductive mesh is placed in the container such that exhaust gas can flow through the conductive mesh. At least two electrical terminals are in permanent electrical contact with the conductive mesh. An electrical power supply completes an electrical circuit through the conductive mesh with the power supply having two or more electrical outputs electrically connected to an equal number of electrical terminals on the conductive mesh. The apparatus provides a filter, heater, electrical load and silencer.01-05-2012
20120020857DOSING SYSTEM HAVING RECIRCULATION HEATING AND VACUUM DRAINING - A reductant dosing system is disclosed. The reductant dosing system may have a supply of reductant, a reductant nozzle, and a pump with an inlet and an outlet. The reductant dosing system may also have a first passage connecting the supply with the inlet of the pump, and a first control valve disposed in the first passage. The reductant dosing system may further have a second passage connecting the outlet of the pump with the reductant nozzle, and a second control valve disposed in the second passage. The reductant dosing system may additionally have a third passage connecting the second control valve to the first passage at a location downstream of the first control valve, and a fourth passage connecting the second control valve with the supply.01-26-2012
20130202506METHOD FOR MONITORING AN SCR CATALYST - In a method for monitoring an SCR catalyst, in particular for monitoring the storage capacity of the SCR catalyst for ammonia, superstoichiometric metering (08-08-2013

Patent applications in class Mixture is exhaust from internal-combustion engine

Patent applications in all subclasses Mixture is exhaust from internal-combustion engine