Patent application number | Description | Published |
20090151341 | APPARATUS FOR REDUCING NITROGEN OXIDE CONTAINED IN EXHAUST GAS - An apparatus for reducing NO | 06-18-2009 |
20090241521 | APPARATUS FOR PURIFYING EXHAUST GAS - An apparatus for purifying exhaust gas may include a CPF device primarily oxidizing hydrocarbon and carbon monoxide in the exhaust gas by using a first DOC, and trapping and regenerating particulate material (PM), a DOC device mounted downstream of the CPF device, secondarily oxidizing the HC and the CO in the primarily oxidized exhaust gas by using a second DOC, and oxidizing nitrogen monoxide into nitrogen dioxide by using the second DOC, a nozzle mounted downstream of the DOC device, and dosing a reducing agent to the exhaust gas secondarily oxidized by the DOC device, and a selective catalytic reduction device mounted downstream of the nozzle, and reducing nitrogen oxide in the exhaust gas into nitrogen gas) by using the NO | 10-01-2009 |
20100132356 | Purification System for Variable Post Injection in LP EGR and Control Method for the Same - A purification system for variable post injection in LP EGR, the system includes a turbo charger disposed downstream of a diesel engine, a DPF (catalyzed particulate filter) disposed downstream of the turbo charger, a NOx reduction apparatus disposed upstream or downstream of the DPF, a bypass line diverged from the DPF for mixing exhaust gas and air inflowing the turbo charger, a exhaust gas control portion disposed downstream of the DPF for controlling flowing of the exhaust gas and a lean/rich controlling portion for controlling lean/rich of the exhaust gas. | 06-03-2010 |
20100223919 | NOX REDUCTION CATALYST AND EXHAUST SYSTEM USING THE SAME - An NOx reduction catalyst and an exhaust system using the same may include an NOx reduction catalyst mounted at an exhaust pipe through which exhaust gas passes, wherein the NOx reduction catalyst includes first and second catalyst layers coated on a carrier, the first catalyst layer being disposed close to the exhaust gas, and the second catalyst layer being disposed close to the carrier, wherein a portion of nitrogen oxide contained in the exhaust gas is oxidized while passing through the first catalyst layer, and the oxidized nitrogen oxide is stored in the second catalyst layer, wherein the nitrogen oxide stored in the second catalyst layer is released through a substitution reaction with an additionally injected fuel, and wherein the released nitrogen oxide is reduced by the additionally injected fuel in the first catalyst layer. | 09-09-2010 |
20110047977 | EXHAUST DEVICE FOR DIESEL VEHICLE - An exhaust device for a diesel vehicle may include a diesel fuel catalyst provided downstream of a turbocharger, a hydrocarbon Selective Catalyst Reduction (SCR) catalyst provided downstream of the diesel fuel catalyst, a catalyst-coated diesel particulate filter provided downstream of the hydrocarbon SCR catalyst, and a secondary fuel injector provided on an exhaust gas pipe between the turbocharger and the diesel fuel catalyst. | 03-03-2011 |
20110047983 | EXHAUST SYSTEM - An exhaust system may include an exhaust line through which exhaust gas that is formed in an engine is exhausted, a nitrogen oxide purification catalyst that is disposed on the exhaust line to reduce nitrogen oxide that is included in the exhaust gas, an injector to additionally inject fuel into the exhaust line or a cylinder, and a fuel cracking catalyst that is disposed between the injector and the nitrogen oxide purification catalyst to crack the fuel that is injected through the injector, to transform the injected fuel into a high efficiency reducing agent, and to raise the temperature of the latter part thereof through an oxidation reaction. | 03-03-2011 |
20110047984 | EXHAUST SYSTEM - An exhaust system, may include an exhaust line through which exhaust gas passes, a nitrogen oxide purification catalyst that is mounted on the exhaust line to reduce nitrogen oxide of the exhaust gas, an injector that is mounted at an upstream side of the nitrogen oxide purification catalyst to additionally inject fuel such that nitrogen oxide that is trapped in the nitrogen oxide purification catalyst is detached to be reduced thereby, and a control portion that varies an injection pattern of the injector if it is determined that a purification rate of the nitrogen oxide purification catalyst is higher than a first predetermined value. | 03-03-2011 |
20110126513 | Exhaust Purification System for Internal Combustion Engine and Desulfurization Method for the Same - An exhaust purification system for an internal combustion engine, and a desulfurization method for the same, recovers purification performance of a denitrification catalyst by removing sulfur poisoned at the denitrification catalyst in an exhaust system. The exhaust purification system may include an exhaust pipe through which an exhaust gas flows, the exhaust gas being generated at the internal combustion engine having a first injector injecting a fuel to a combustion chamber, a second injector mounted at the exhaust pipe and additionally injecting the fuel, a particulate filter mounted at the exhaust pipe downstream of the second injector and filtering particulate matters (PM) in the exhaust gas, a denitrification catalyst mounted at the exhaust pipe downstream of the particulate filter and reducing nitrogen oxide contained in the exhaust gas, and a control portion performing desulfurization of the denitrification catalyst when a desulfurization entering condition and a desulfurization condition are satisfied during regenerating the particulate filter. | 06-02-2011 |
20120006005 | Exhaust Gas Post Processing System and Control Method Thereof - An exhaust gas processing method may include desulfurizing a catalyst by raising temperature of the catalyst to a predetermined value, if the front/end temperature difference ΔT is less than a predetermined temperature difference X, while reducing agent is being injected, determining whether travel distance, fuel consumption amount, or travel time exceeds a first reference value, after the desulfurization, determining whether fuel is replenished by detecting the fuel amount, and determining whether a high sulfur fuel is refueled or not, if the first reference value does not exceed a predetermined value, the fuel is replenished, and the temperature difference (ΔT) is less than the predetermined temperature difference (X) during injection of the reducing agent. Accordingly, while the nitrogen oxide purification mode is being performed so as to eliminate the nitrogen oxide, the desulfurization control is performed according to a temperature difference between the front and the rear of the catalyst, and if the abnormal desulfurization control is repeatedly performed, it is determined that the high sulfur fuel is replenished. Further, this method has the vehicle driver effectively determine whether the high sulfur fuel is replenished or not and guide the vehicle driver not to replenish the high sulfur fuel some other time. | 01-12-2012 |
20120009091 | CATALYST FOR DIESEL PARTICLE FILTER, PREPARATION METHOD OF THE SAME, AND SOOT REDUCTION DEVICE OF DIESEL ENGINE INCLUDING THE SAME - A catalyst for diesel particle filter includes a platinum (Pt)-neodymium (Nd) alloy that is carried in silica, a preparation method thereof and a soot reduction device for diesel engine including the same, wherein the catalyst for diesel particle filter can maintain high catalyst activity and implement high nitrogen monoxide (NO) conversion efficiency even though it is used under the high temperature or vulcanization condition for a long time. | 01-12-2012 |
20120036840 | NOx Storage and Reduction Catalyst, Preparation Method, and NOx Removing System - A catalyst for NOx storage and reduction may include a carrier that contains alkali metal and Al, or alkali earth metal and Al, a NOx storage element of alkali metal, alkali earth metal or rare earth element, and one or more noble metals that are selected from the group consisting of Pt, Pd, Ru, Ag, Au and Rh. The catalyst for NOx storage and reduction shows excellent NOx storage and reduction capability, maintains excellent storage and reduction capability especially before and after deterioration and sulfation, and shows excellent catalytic activity under low temperature environment, while maintaining unusually high hydrophobicity. | 02-16-2012 |
20120124970 | METHOD FOR PREDICTING NOx AMOUNT AMD EXHAUST SYSTEM USING THE SAME - A method for predicting a NOx amount may include detecting an O2 amount in an intake air, calculating a reference O2 amount in the intake air according to a driving condition of an engine, calculating a reference NOx amount contained in an exhaust gas according to the driving condition of the engine, and primarily correcting the reference NOx amount based on the detected O2 amount in the intake air and the reference O2 amount in the intake air according to the driving condition of the engine. | 05-24-2012 |
20120124973 | Method for Predicting NOx Amount and Exhaust System Using the Same - A method for predicting a NOx amount, may include determining a reference NOx amount according to a driving condition of an engine, primarily correcting the reference NOx amount according to an exhaust gas recirculation (EGR) ratio, and secondarily correcting the primarily corrected NOx amount according to an environmental factor and the driving condition. | 05-24-2012 |
20120137661 | METHOD FOR PREDICTING REGENERATION OF DENOX CATALYST AND EXHAUST SYSTEM USING THE SAME - A method for predicting regeneration may include calculating total mass flow of reducing agent, calculating mass flow of the reducing agent used in nitrate reduction reaction, mass flow of the reducing agent used in NO2 reduction reaction, and mass flow of the reducing agent which is simply oxidized by using the total mass flow of the reducing agent, calculating mass flow of released NO2 and mass flow of reduced NO2 by using the mass flow of the reducing agent used in the nitrate reduction reaction and the mass flow of the reducing agent used in the NO2 reduction reaction, calculating mass flow of NO2 slipped from DeNOx catalyst, and calculating mass of NO2 and mass of NOx remaining at the DeNOx catalyst after regeneration based on the mass flow of the released NO2, the mass flow of the reduced NO2, and the mass flow of the slipped NO2. | 06-07-2012 |
20120137662 | METHOD FOR PREDICTING SOX STORED AT DENOX CATALYST AND EXHAUST SYSTEM USING THE SAME - A method for predicting sulfur oxides (SOx) stored at a denitrification (DeNOx) catalyst may include calculations of the mass flow of SOx poisoned at the DeNOx catalyst, the mass flow of SOx released from the DeNOx catalyst, and the SOx amount poisoned at the DeNOx catalyst by integrating the value obtained by subtracting the released mass flow of SOx from the poisoned mass flow of SOx. An exhaust system using the method may comprise an engine having a first injector, an exhaust pipe, a second injector mounted at the exhaust pipe and injecting a reducing agent, a DeNOx catalyst mounted at the exhaust pipe and reducing SOx or nitrogen oxides (NOx) or both contained in the exhaust gas by using the reducing agent, and a control portion electrically connected to the system and performing the calculations and controls. | 06-07-2012 |
20120137663 | METHOD FOR PREDICTING NOX LOADING AT DENOX CATALYST AND EXHAUST SYSTEM USING THE SAME - A method is provided for predicting NOx loading at a DeNOx catalyst by which a NOx amount actually stored in the DeNOx catalyst can be precisely predicted and to an exhaust system which controls a regeneration timing of the DeNOx catalyst and amount of a reducing agent which is injected by using the method. The method may include calculating mass flow of NOx stored at the DeNOx catalyst, calculating mass flow of NOx thermally released from the DeNOx catalyst, calculating mass flow of NOx chemically released from the DeNOx catalyst, and calculating NOx amount actually stored at the DeNOx catalyst by using the mass flow of NOx stored at the DeNOx catalyst, the mass flow of NOx thermally released from the DeNOx catalyst, and the mass flow of NOx chemically released from the DeNOx catalyst. | 06-07-2012 |
20120282147 | CATALYST FOR DIESEL PARTICLE FILTER, PREPARATION METHOD OF THE SAME, AND SOOT REDUCTION DEVICE OF DIESEL ENGINE INCLUDING THE SAME - A catalyst for diesel particle filter includes a platinum (Pt)-neodymium (Nd) alloy that is carried in silica, a preparation method thereof and a soot reduction device for diesel engine including the same, wherein the catalyst for diesel particle filter can maintain high catalyst activity and implement high nitrogen monoxide (NO) conversion efficiency even though it is used under the high temperature or vulcanization condition for a long time. | 11-08-2012 |
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 |
20130040802 | DESULFURIZATION METHOD FOR LNT SYSTEM - A desulfurization method of a nitrogen oxide absorption catalyst when diesel is used may include determining how many times a regeneration of a diesel particulate filter (DPF) is completed, ending a DPF regeneration, if the number of times of the DPF regeneration reaches a predetermined value and entering into a desulfurization mode to desulfurize the DPF, ending the desulfurization mode after the desulfurization mode is performed for a predetermined time, and calculating a particulate matters (PM) amount that is trapped in the DPF after the desulfurization, compensating the trapped PM amount, and determining a time of the DPF regeneration. A desulfurization timing is determined based on the number of times that the DPF is regenerated to be able to simplify the desulfurization logic and also reduce the memory of ECU, when the LNT catalyst is poisoned by a small amount of sulfur included in exhaust gas. | 02-14-2013 |
20130061573 | SYSTEM FOR PURIFYING EXHAUST GAS AND METHOD FOR CONTROLLING THE SAME - An exhaust gas purification device may deactivate at least one of cylinders to supply a gasoline particulate filter with sufficient air according to a driving condition of a gasoline engine, and a control method thereof and a control method thereof may include comparing a pressure difference of the gasoline particulate filter with a predetermined value, determining a cylinder that may be to be deactivated when the pressure difference may be larger than the predetermined value, regenerating the gasoline particulate filter by supplying it with air through the deactivated cylinder, determining whether the engine may be in an over-run condition during the regeneration process, and returning to a general driving condition in a case that the engine may be in the over-run condition. | 03-14-2013 |
20130067888 | PURIFICATION SYSTEM FOR VARIABLE POST INJECTION IN LP EGR AND CONTROL METHOD FOR THE SAME - A purification system for variable post injection in LP EGR, the system includes a turbo charger disposed downstream of a diesel engine, a DPF (catalyzed particulate filter) disposed downstream of the turbo charger, a NOx reduction apparatus disposed upstream or downstream of the DPF, a bypass line diverged from the DPF for mixing exhaust gas and air inflowing the turbo charger, a exhaust gas control portion disposed downstream of the DPF for controlling flowing of the exhaust gas and a lean/rich controlling portion for controlling lean/rich of the exhaust gas. | 03-21-2013 |
20130086888 | EXHAUST GAS PROCESSING DEVICE - An exhaust gas treatment method having a particulate matter (PM) sensor on which a part of PM exhausted from a diesel particulate filter (DPF) may be attached and that generates a signal, may include determining a sensor trap PM model amount that may be trapped on the PM sensor in a condition that the diesel particulate filter may be operated normal according to an engine driving condition and a variation thereof, determining a sensor trap PM real amount that may be attached on the PM sensor by using the signal that may be generated from the PM sensor, and determining a condition of the diesel particulate filter by comparing the sensor trap PM model amount and the sensor trap PM real amount. | 04-11-2013 |
20130145821 | PARTICULATE MATTER SENSOR UNIT - A particulate matter (PM) sensor unit may include an exhaust line where exhaust gas passes, and a PM sensor that may be disposed at one side of the exhaust line and that generates a signal when particulate matter included in the exhaust gas passes the vicinity thereof, wherein the PM sensor may be an electrostatic induction type that generates an induction charge while the particulate matter having an electric charge passes the vicinity thereof. | 06-13-2013 |
20140116113 | PARTICULATE MATTER SENSOR UNIT - A particulate sensor apparatus may include an exhaust line through which exhaust gas flows, and a sensor that may be disposed at one side in the exhaust line and generates electrical charges when a particulate passes near vicinity of the sensor, wherein an electrode portion may be formed on a front surface of the sensor facing the particulate. | 05-01-2014 |
20140165699 | PARTICULATE MATTER SENSOR UNIT - A particulate matter sensor unit including a sensor on one side of an exhaust line and configured to employ an electrostatic induction for generating electric charges by a particulate matter contained in an exhaust gas when the particulate matter passes the sensor. The sensor includes a body portion, an electrode portion formed in a front of the body portion on one side of the front and adjacent to the particulate matter, a heating portion in a rear of the body portion on one side of the rear corresponding to the electrode portion, a power input portion in the rear of the body portion on the other side of the rear and to supply a power to the heating portion, and connection lines to connect the power input portion to the heating portion, which use the supplied power to generate heat for burning and removing the particulate matter. | 06-19-2014 |
20140186226 | NOx STORAGE AND REDUCTION CATALYST, PREPARATION METHOD, AND NOx REMOVING SYSTEM - A catalyst for NOx storage and reduction may include a carrier that contains alkali metal and Al, or alkali earth metal and Al, a NOx storage element of alkali metal, alkali earth metal or rare earth element, and one or more noble metals that are selected from the group consisting of Pt, Pd, Ru, Ag, Au and Rh. The catalyst for NOx storage and reduction shows excellent NOx storage and reduction capability, maintains excellent storage and reduction capability especially before and after deterioration and sulfation, and shows excellent catalytic activity under low temperature environment, while maintaining unusually high hydrophobicity. | 07-03-2014 |
20140337740 | METHOD AND APPARATUS FOR SELECTING OBJECT - Provided herein is a method for selecting an object. The method for selecting an object according to an exemplary embodiment includes displaying a plurality of objects on a screen, recognizing a voice uttered by a user and tracking an eye of the user with respect to the screen, and selecting at least one object from among the plurality of objects on the screen based on the recognized user's voice and the tracked eye. | 11-13-2014 |
20140345362 | PARTICULATE MATTER SENSOR UNIT - A particulate matter (PM) sensor unit may include an exhaust line where exhaust gas passes, and a PM sensor that may be disposed at one side of the exhaust line and that generates a signal when particulate matter included in the exhaust gas passes the vicinity thereof, wherein the PM sensor may be an electrostatic induction type that generates an induction charge while the particulate matter having an electric charge passes the vicinity thereof | 11-27-2014 |
20150020576 | PARTICULATE MATTER SENSOR UNIT - A particulate matter sensor unit may include a sensor portion of an electrostatic induction type that may be reacted when a particulate matter having electric charge may be passing the vicinity thereof, a protection pad that the sensor portion may be bonded on one side thereof through a conductive paste, an heater electrode that may be formed on the protection pad and burns the particulate matters that may be disposed on the sensor portion to eliminate them, and a sensor electrode that may be formed on the protection pad to transfer a signal that may be generated by the sensor portion to an outside. | 01-22-2015 |