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148results about How to "Improve exhaust gas purification performance" patented technology
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Catalytic converter, holding material for catalytic converter and production method thereof
ActiveUS20090022633A1Improve insulation performanceImprove exhaust gas purification performanceCombination devicesLamination ancillary operationsPorous substrateCatalyst support
The present invention relates to a holding material for a catalytic converter including a catalyst carrier, a metal casing for receiving the catalyst carrier, and the holding material wound around the catalyst carrier and interposed in a gap between the catalyst carrier and the metal casing, the holding material including a low thermal conductivity layer, in which the low thermal conductivity layer includes: a molded material containing an inorganic powder; or a composite material of a porous substrate with an aerogel.
Owner:NICHIAS CORP
Double layered exhaust gas purification catalyst
ActiveUS8853120B2Improve exhaust gas purification performanceSatisfactory performanceInorganic chemistryInternal combustion piston enginesOxygen storageExhaust gas
Owner:TOYOTA JIDOSHA KK
Honeycomb structural body, honeycomb filter, and method of manufacturing the structural body and the filter
ActiveUS7488412B2Improve performanceImprove reliabilityCombination devicesInternal combustion piston enginesStress concentrationEngineering
There is disclosed a honeycomb structural body (1) comprising: a plurality of through channels (3) formed by a plurality of partition walls (2) in an axial direction. The honeycomb structural body (1) is constituted of a plurality of honeycomb sections (10, 11) formed of materials having different characteristics, and the plurality of honeycomb sections (10, 11) are directly bonded to and integrated with one another. According to the structure of this honeycomb structural body, different high performances can be fulfilled in accordance with requests for each honeycomb section. Additionally, there is not any local stress concentration by shape mismatch of each honeycomb section or presence of a bond material, and reliability at the time of use, and the like can be enhanced.
Owner:NGK INSULATORS LTD
Internal Combustion Engine
ActiveUS20080223020A1Reduce amount of fuelImprove exhaust gas purification performanceGas treatmentInternal combustion piston enginesExhaust gasInternal combustion engine
An engine exhaust passage has an SOx trapping catalyst (11), a particulate filter (13) holding an NOx storing / reducing catalyst, and an NOx storing / reducing catalyst (15) forming a post-treatment system and a fuel feed valve (17) for feeding fuel for post processing in the post-treatment system arranged inside it. When any catalyst has a degree of degradation exceeding a predetermined degree of degradation, the method of feeding the post-treatment fuel is reset so that the post-treatment fuel required for purification of the exhaust gas can be fed into the catalyst with the lowest degree of degradation to make the catalyst with the lowest degree of degradation handle the purification action of the exhaust gas.
Owner:TOYOTA JIDOSHA KK
Exhaust gas purifying catalyst
ActiveUS8580705B2Suppresses migration and sinteringImprove exhaust gas purification performanceGas treatmentInternal combustion piston enginesRare-earth elementMixed oxide
An exhaust gas purifying catalyst includes a substrate that defines an exhaust gas passage; a lower catalyst layer formed over the substrate, and an upper catalyst layer formed over the lower catalyst layer. The lower catalyst layer has a lower catalytic precious metal that contains at least one of Pt and Pd, and a lower-layer carrier that supports the lower catalytic precious metal. The upper catalyst layer has an upper catalytic precious metal that contains Rh, and an upper-layer carrier that supports the upper catalytic precious metal. The upper-layer carrier includes an inorganic mixed oxide that contains Ce, Zr, Al, Nd, and at least one element selected from the group consisting of rare earth elements other than Ce and alkaline earth elements. The Nd is unevenly distributed in covering layers that covers surfaces of interior regions within the inorganic mixed oxide.
Owner:TOYOTA JIDOSHA KK +2
Exhaust gas-purifying catalyst
ActiveUS20120065058A1Improve exhaust gas purification performanceInternal combustion piston enginesOther chemical processesExhaust gasPrecious metal
An exhaust gas-purifying catalyst according to the present invention includes a substrate, a first catalytic layer facing the substrate and includes at least one precious metal selected from the group consisting of palladium and platinum, and alumina doped with an alkaline-earth metal element, and a second catalytic layer facing the substrate with the first catalytic layer interposed therebetween or intervening between the substrate and the first catalytic layer, the second catalytic layer includes rhodium and alumina doped with the alkaline-earth metal element.
Owner:CATALER CORP
Exhaust gas purification catalyst and oxygen storage component for the same
InactiveUS7307039B2Improve exhaust gas purification performanceDeteriorating exhaust gas purification performanceInternal combustion piston enginesZirconium compoundsMixed oxideHoneycomb
In an exhaust gas purification catalyst comprising a honeycomb support and a catalytic layer that is formed on wall surfaces of each cell of the honeycomb support and contains active alumina and a mixed oxide containing Ce, Zr and Nd and doped with catalytic precious metal, the mixed oxide has a CeO2 / ZrO2 mass ratio of 1.4 or more and the ratio of Nd2O3 / (CeO2+ZrO2+Nd2O3) in the mixed oxide is 20 mass % or less.
Owner:MAZDA MOTOR CORP
Exhaust gas purification catalyst
InactiveUS7446076B2Quick activationPrevent heat transferInternal combustion piston enginesOther chemical processesMixed oxideExhaust fumes
Owner:MAZDA MOTOR CORP
Catalyst for exhaust gas purification, production method therefor, and method for purification of exhaust gas using the catalyst
ActiveUS7923407B2Improve ignition performanceEfficient productionInternal combustion piston enginesMolecular sieve catalystsPlatinumActive component
Owner:UMICORE SHOKUBAI JAPAN CO LTD +1
Noble metal-rare-earth catalyst for purifying waste gas and its preparation
InactiveCN1473651AIncreased durabilityIncreased chance of collisionDispersed particle separationCatalyst activation/preparationMischmetalMixed oxide
The catalyst includes alumina, RE metal oxide, composite Al-La oxide, and active metal Pt, Pd and Rh. It features that the mixed oxide grain with aluina, cerium oxide and Al-La oxide carries at least one of Pt and Pd as well as Rh. The mixed oxide grain is prepared through dissolving salt of Al, Ce and La in water, adding NH3OH to produce precipitate, and heating to decompose the precipitate. The catalyst preparing process includes carrying mixed oxide grains onto the carrier, carrying least one of Pt and Pd onto the mixed oxide grains, and carrying Rh finally. The catalyst is especially suitable for purifying automobile tail gas of gasoline engine near the theoretical air / fuel ratio, and has the features of lasting use, less noble metal consumption, high purifying efficiency and powerful sulfur poison resistance.
Owner:昆明贵研催化剂有限责任公司
Exhaust gas purification catalyst
ActiveUS20170306823A1Reduce pressure lossIncreased pressure lossInternal combustion piston enginesDispersed particle separationEngineeringExhaust gas
An exhaust gas purification catalyst that has an excellent exhaust gas purification performance while suppressing pressure loss increases. The exhaust gas purification catalyst is provided with a substrate having a wall-flow structure and having a partition; a first catalyst layer formed, in a region of an interior part of the partition that is in contact with an entrance cell, along the extending direction of the partition from an exhaust gas inflow-side end for less than the total length Lw of the partition; and a second catalyst layer formed, in a region of an interior part of the partition that is in contact with an exit cell, along the extending direction of the partition from the exhaust gas outflow-side end for less than the total length Lw of the partition. The first catalyst layer and the second catalyst layer are configured to partially overlap with each other in the extending direction.
Owner:CATALER CORP +1
Control system and method for internal combustion engine and engine control unit
InactiveUS20100256894A1Avoid interactionImprove responsivenessAnalogue computers for vehiclesElectrical controlExternal combustion engineControl system
A control system for an internal combustion engine, which is capable of properly controlling both the temperature of an exhaust system and the air-fuel ratio of exhaust gases even when the control range of the air-fuel ratio of a combustion air-fuel mixture is limited, thereby improving the reduction of exhaust emissions. In the control system, a demanded torque-calculating section calculates a demanded torque. A first controller calculates a target equivalent ratio such that a DeNOx catalyst temperature converges to a predetermined target temperature. A second controller calculates three feedback correction values such that an output value from an oxygen concentration sensor converges to a target output value. A third controller calculates a torque fuel injection amount for generating the combustion air-fuel mixture, a post fuel injection amount for supplying unburned fuel to a DeNOx catalyst, etc. based on five values.
Owner:HONDA MOTOR CO LTD
Exhaust system of outboard motor
ActiveUS7704111B2Improve exhaust gas purification performanceSmall sizePower plants using condensersExhaust apparatusCylinder headCrankcase
An outboard motor includes a multi-cylinder engine which includes cylinders longitudinally oriented and vertically paralleled in a cylinder block, a cylinder head arranged at a rearward position of the cylinder blocks, and a crankcase arranged at a forward position of the cylinder block, the cylinder head having an outlet of an exhaust port at one side thereof. An exhaust system for the outboard motor includes an exhaust manifold which communicates the outlet of the exhaust port with an exhaust outlet opening, the exhaust manifold including a first exhaust gas passage extending in a vertical direction for gathering exhaust gas discharged from the outlet of each exhaust port and a second exhaust gas passage extending in a vertical direction adjacently to the first exhaust gas passage, and a catalyst unit is provided on the way of the second exhaust gas passage.
Owner:SUZUKI MOTOR CORP
Exhaust gas-purifying catalyst
InactiveUS8361925B2Improve exhaust gas purification performanceHigh catalytic activityMolecular sieve catalystsOther chemical processesComposite oxidePlatinum group
Owner:CATALER CORP +1
Addition-amount controller for exhaust gas purifying agent and exhaust emission control system
InactiveUS20090000278A1Improve exhaust gas purification performanceLarge storage capacityGas treatmentInternal combustion piston enginesControl systemExhaust fumes
In an addition-amount controller for an exhaust gas purifying agent to be used for an exhaust emission control system of an engine, one mode is executed based on satisfaction of an execution condition for each mode, from among a plurality of control modes. The control modes includes a purification control mode in which an addition amount of NH3 or an additive serving as a generating source of the NH3 is determined according to a predetermined parameter associated with an amount of NOx in the exhaust gas, and a storage control mode in which the addition amount is set to be larger than that in the purification control mode. When a rotation speed of an output shaft of the engine is determined to be decelerated from a higher speed state than an allowable level, the execution condition of the storage control mode is satisfied after a predetermined dissatisfaction time period from start of the deceleration.
Owner:DENSO CORP +1
Exhaust gas purification catalyst
ActiveUS10159934B2Reduce total powerLower performance requirementsGas treatmentInternal combustion piston enginesChemistryExhaust gas
Owner:CATALER CORP +1
Perovskite complex oxide and catalyst
InactiveUS20060018815A1Inhibition formationReduce the amount requiredHeterogenous catalyst chemical elementsDispersed particle separationRare-earth elementWeight Decrease
A perovskite complex oxide is provided whose ratio of thermogravimetric weight decrease between 50° C. and 180° C. to thermogravimetric weight decrease between 50° C. and 1000° C. is not less than 30% and which contains, for example, one or more rare earth element species and one or more transition metal elements. Among perovskite complex oxides represented by structural formula RTO3, ones in which R is constituted by one or more rare earth element species and T is constituted by one or more transition metal elements, and ones in which R is constituted by one or more rare earth element species and one or more members selected from the group comprising alkali metal elements and alkali earth metal elements and T is constituted by one or more transition metal elements are excellent for use. A “rare earth element species” is defined as a member of the group of elements obtained by adding Y to the rare earth elements. The perovskite complex oxide is an excellent carrier for a vehicle exhaust gas purification catalyst that imparts catalytic activity in the low-temperature region.
Owner:DOWA ELECTRONICS MATERIALS CO LTD
Exhaust gas purification catalyst
ActiveUS20170304773A1Reduce increase in pressure lossImprove exhaust gas purification performanceInternal combustion piston enginesDispersed particle separationEngineeringExhaust heat
An exhaust gas purification catalyst having an excellent exhaust gas purification ability while reducing the increase in pressure loss. Exhaust gas purification catalyst includes entrance cell, exit cell, and a wall-flow substrate having partition wall to separate these cell, a catalytic layer formed from exhaust inlet-side ends in the extending direction in sections of the interior of partition wall facing entrance cell, and a catalytic layer formed on the surface of partition wall facing exit cell from exhaust outlet-side ends in the extending direction of partition wall, having a length shorter than the entire partition wall length.
Owner:CATALER CORP +1
Catalyst for exhaust gas purification, production method therefor, and method for purification of exhaust gas using the catalyst
ActiveUS20070219089A1Improve ignition performanceEfficient productionInternal combustion piston enginesOther chemical processesPlatinumActive component
It is an object of the present invention to provide a catalyst for the exhaust gas purification having excellent ignition performance and NOx purification performance. The present invention provides a catalyst for the exhaust gas purification which comprises a catalytically active component (I) having palladium and barium supported on a refractory inorganic oxide (A); and a catalytically active component (II) having at least either of rhodium and platinum on a refractory inorganic oxide (B), a method for the production thereof, and a method for purifying an exhaust gas using such a catalyst.
Owner:UMICORE SHOKUBAI JAPAN CO LTD +1
Addition-amount controller for exhaust gas purifying agent and exhaust emission control system
ActiveUS20090000280A1High catalyst temperatureLimit amount of storageInternal combustion piston enginesExhaust apparatusControl systemReaction temperature
In an addition-amount controller for an exhaust gas purifying agent to be used for an exhaust emission control system, a catalyst has properties of storing NH3 and further decreasing the critical reaction temperature as an amount of NH3 storage at the catalyst is increased. In the addition-amount controller, a present NH3 storage amount that is a storage amount of NH3 of the catalyst is detected at a detection time, the NH3 storage amount of the catalyst is changed by controlling an addition amount by an addition valve, and the NH3 storage amount of the catalyst is controlled to a target NH3 storage amount based on the detected present NH3 storage amount.
Owner:DENSO CORP +1
Exhaust gas purification apparatus
ActiveUS10201805B2Increase resistanceEffective contactDispersed particle separationSilencing apparatusPore diameterChemistry
Owner:CATALER CORP
Engine device
InactiveCN102159817AImprove versatilityAvoid damageInternal combustion piston enginesSilencing apparatusCountermeasureDiesel engine
The present invention aims to provide an engine device which allows a gas purifying filter (1) as a part constituting an engine (70) to be highly rigidly mounted to the engine (70), which eliminates the need that each device of a vehicle has countermeasures for exhaust gas, and which enhances the versatility of the engine (70). The engine device provided by the invention is provided with a diesel engine (70) having an exhaust manifold (71), and also with an exhaust gas purifying device (1) for purifying exhaust gas discharged by the diesel engine (70). Filter support bodies (19) for supporting the exhaust gas purifying device (1) are provided to the upper part of a flywheel housing (78) of the diesel engine (70). The exhaust gas purifying device (1) is connected to the exhaust manifold (71) and also connected to the flywheel housing (78) through the filter support bodies (19).
Owner:YANMAR POWER TECHNOLOGY CO LTD
Engine device
ActiveCN102159809AImprove versatilityAvoid damageInternal combustion piston enginesDispersed particle separationCountermeasureCylinder head
An engine device in which a DPF (1), which is one of the components of an engine (70), is disposed in the engine (70) with high rigidity, which eliminates a measure against exhaust gas for each device of a vehicle, and which can improve the usability of the engine (70). The engine device comprises the engine (70) having an exhaust manifold (71) and the DPF (1) for purifying the exhaust gas exhausted from the engine (70). The cylinder head (72) of the engine (70) comprises filter support bodies (19a-19c) for supporting the DPF (1). The DPF (1) is connected to the exhaust manifold (71), and also connected to the cylinder head (2) with the filter support bodies (19a-19c) interposed therebetween.
Owner:YANMAR POWER TECHNOLOGY CO LTD
Exhaust gas purification catalyst
ActiveUS10159935B2Increased pressure lossImprove purification effectInternal combustion piston enginesDispersed particle separationExhaust fumesEngineering
An exhaust gas purification catalyst having an excellent exhaust gas purification ability while reducing the increase in pressure loss. Exhaust gas purification catalyst includes entrance cell, exit cell, and a wall-flow substrate having partition wall to separate these cell, a catalytic layer formed from exhaust inlet-side ends in the extending direction in sections of the interior of partition wall facing entrance cell, and a catalytic layer formed on the surface of partition wall facing exit cell from exhaust outlet-side ends in the extending direction of partition wall, having a length shorter than the entire partition wall length.
Owner:CATALER CORP +1
Exhaust gas purification catalyst
ActiveUS8318632B2Improve exhaust gas purification performanceMolecular sieve catalystsInternal combustion piston enginesPlatinumAlkaline earth metal
An exhaust gas purification catalyst includes a substrate, and a first catalyst layer formed on the substrate, the first catalyst layer containing palladium and / or platinum and alumina doped with an alkaline-earth metal element. The exhaust gas purification catalyst has a correlation coefficient ρAl,AE given by the following formula of 0.75 or more:ρAl,AE=CAl,AEσAlσAE.(1)
Owner:CATALER CORP
Exhaust system of outboard motor
ActiveUS20080166935A1Small sizeImprove exhaust gas purification performanceExhaust apparatusOutboard propulsion unitsCylinder headCrankcase
An outboard motor includes a multi-cylinder engine which includes cylinders longitudinally oriented and vertically paralleled in a cylinder block, a cylinder head arranged at a rearward position of the cylinder blocks, and a crankcase arranged at a forward position of the cylinder block, the cylinder head having an outlet of an exhaust port at one side thereof. An exhaust system for the outboard motor includes an exhaust manifold which communicates the outlet of the exhaust port with an exhaust outlet opening, the exhaust manifold including a first exhaust gas passage extending in a vertical direction for gathering exhaust gas discharged from the outlet of each exhaust port and a second exhaust gas passage extending in a vertical direction adjacently to the first exhaust gas passage, and a catalyst unit is provided on the way of the second exhaust gas passage.
Owner:SUZUKI MOTOR CORP
Exhaust gas purification catalyst
ActiveUS20180028972A1Reduce total pressure lossImprove purification effectGas treatmentInternal combustion piston enginesChemistryExhaust gas
Provided is an exhaust gas purification catalyst that combines reduction of pressure loss and enhancement of purification performance. This invention provides an exhaust gas purification catalyst comprising a wall-flow-type substrate and first and second catalytic layers. The first catalytic layer is provided to the interior of a partition wall, in contact with an entrance cell, from an exhaust inlet-side end in the running direction, having a length L1 less than Lw. The second catalytic layer is provided to the interior of a partition wall, in contact with an exit cell, from an exhaust outlet-side end in the running direction, having a length L2 less than Lw. An internal portion of partition wall in contact with entrance cell has a substrate-exposing segment near the exhaust outlet-side end.
Owner:CATALER CORP +1
Aei type zeolite, method for producing same, and uses thereof
ActiveUS20170259250A1Low costImprove catalytic performanceInternal combustion piston enginesMolecular sieve catalystsHydrofluoric acidOrganic structure
Provided is a method for producing an inexpensive, high-performance AEI type zeolite and an AEI type zeolite having a Si / Al ratio of 6.5 or less by using neither an expensive Y type zeolite as a raw material nor dangerous hydrofluoric acid. The method for producing an AEI type zeolite having a Si / Al ratio of 50 or less includes: preparing a mixture including a silicon atom material, an aluminum atom material, an alkali metal atom material, an organic structure-directing agent, and water; and performing hydrothermal synthesis of the obtained mixture, in which a compound having a Si content of 20% by weight or less and containing aluminum is used as the aluminum atom material; and the mixture includes a zeolite having a framework density of 14 T / 1000 Å3 or more in an amount of 0.1% by weight or more with respect to SiO2 assuming that all Si atoms in the mixture are formed in SiO2.
Owner:MITSUBISHI CHEM CORP
System and method for purifying an exhaust gas
InactiveUS20050217241A1Good purification of exhaust gasImprove exhaust gas purification performanceInternal combustion piston enginesExhaust apparatusParticulatesNitrogen oxide
A system for purifying an exhaust gas includes a plasma unit and a catalyst unit. The plasma unit generates energetic plasma species which react with particulate matters and nitrogen oxides contained in the exhaust gas. The catalyst unit has a catalyst which reacts with the exhaust gas. The plasma unit is disposed upstream relative to the catalyst unit in a direction of flow of the exhaust gas and the system provides sequential purification for the particulate matters and the nitrogen oxides.
Owner:HONDA MOTOR CO LTD
Exhaust gas purification catalyst
ActiveUS10125649B2Improve exhaust gas purification performanceIncreased pressure lossInternal combustion piston enginesDispersed particle separationExhaust fumesEngineering
An exhaust gas purification catalyst that has an excellent exhaust gas purification performance while suppressing pressure loss increases. The exhaust gas purification catalyst is provided with a substrate having a wall-flow structure and having a partition; a first catalyst layer formed, in a region of an interior part of the partition that is in contact with an entrance cell, along the extending direction of the partition from an exhaust gas inflow-side end for less than the total length Lw of the partition; and a second catalyst layer formed, in a region of an interior part of the partition that is in contact with an exit cell, along the extending direction of the partition from the exhaust gas outflow-side end for less than the total length Lw of the partition. The first catalyst layer and the second catalyst layer are configured to partially overlap with each other in the extending direction.
Owner:CATALER CORP +1
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