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公开(公告)号：US11635011B2
公开(公告)日：2023-04-25
申请号：US17941337
申请日：2022-09-09
发明人： James C. Clerc , Bradley V. Jones , Marc Alexander Greca , Santosh Kumar Ratan , Rohil Daya , Karthik Venkata Rama Krishna Dadi , Jinqian Gong , Bryon D. Staebler , Todd A. Corbet , Alain Ngoy Tschimwang , Premjee Sasidharan , David C. Hall
摘要： A controller for controlling operation of an aftertreatment system that is configured to treat constituents of an exhaust gas produced by an engine, the aftertreatment system including a selective catalytic reduction (SCR) catalyst, the controller configured to: generate a short-term cumulative degradation estimate of the SCR catalyst corresponding to reversible degradation of the SCR catalyst due to sulfur and/or hydrocarbons based on a SCR catalyst temperature parameter; generate a long-term cumulative degradation estimate of the SCR catalyst corresponding to thermal aging of the SCR catalyst based on the SCR catalyst temperature parameter; generate a combined degradation estimate of the SCR catalyst based on the short-term cumulative degradation estimate and the long-term cumulative degradation estimate; and adjust an amount of reductant and/or an amount of hydrocarbons inserted into the aftertreatment system based on the combined degradation estimate of the SCR catalyst.
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公开(公告)号：US11629661B1
公开(公告)日：2023-04-18
申请号：US17498967
申请日：2021-10-12
发明人： Lyle M. Pickett , Julien Manin , Kevin Wan
摘要： A combustion system including a combustion mechanism that injects oxygenated fuel into a combustion chamber. The oxygenated fuel mixes with the intake air in the combustion chamber where the air-fuel ratio in a portion of the combustion chamber is stoichiometric. The combustion mechanism includes an ignition mechanism that ignites the air-fuel mixture that generates a threshold number of particulates during combustion of the air-fuel mixture. The combustion system further includes an exhaust gas recirculation (EGR) device that recirculates a portion of the exhaust gases back into the combustion chamber. The EGR device recirculates the portion of the exhaust to lower combustion temperature resulting in reduced amount of nitrogen oxide in the exhaust. The combustion system further includes a three-way catalytic converter in line with the exhaust channel to convert a second portion of the exhaust gases, leading to lower pollutant emissions than conventional combustion systems.
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公开(公告)号：US11628400B2
公开(公告)日：2023-04-18
申请号：US16954323
申请日：2018-12-14
申请人： UMICORE AG & CO. KG
发明人： Jan Schoenhaber , Naina Deibel , Martin Roesch , Stephanie Spiess , Joerg-Michael Richter , Susanne Kunert
IPC分类号： B01J21/06 , B01D53/94 , B01J23/63 , B01J35/00 , B01J35/04 , F01N3/10 , F01N3/28 , B01J23/10 , B01J23/46 , F01N3/035
摘要： The present invention relates to a particulate filter which comprises a wall-flow filter of length L and two different catalytically active coatings Y and Z, wherein the wall flow filter comprises channels E and A that extend in parallel between a first and a second end of the wall-flow filter and are separated by porous walls which form the surfaces OE and OA, respectively, and wherein the channels E are closed at the second end and the channels A are closed at the first end. The invention is characterized in that the coating Y is located in the channels E on the surfaces OE and the coating Z is located in the porous walls.
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公开(公告)号：US11603785B2
公开(公告)日：2023-03-14
申请号：US17654335
申请日：2022-03-10
发明人： Gert-Ove Wahlström
摘要： An exhaust aftertreatment unit for cleaning exhaust gases. The exhaust aftertreatment unit includes an emission reducing module being a diesel particulate filter, DPF, and/or a diesel oxidation catalyst, DOC, a selective catalyst reduction, SCR, catalyst, an electrical heating element arranged upstream of the SCR catalyst, a casing housing at least the emission reducing module, and a service lid removably arranged to cover a service opening of the casing through which the emission reducing module may be accessed. The electrical heating element is removably arranged relative the casing and is arranged accessible upon removal of the service lid.
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公开(公告)号：US20230070493A1
公开(公告)日：2023-03-09
申请号：US17820270
申请日：2022-08-17
摘要： A catalyst composition comprising a first platinum group metal (PGM) component and a first support material, wherein the first PGM component comprises platinum (Pt) and palladium (Pd) and is supported on the first support material; and wherein the first PGM component has a Pt:Pd molar ratio of from about 5:95 to about 95:5.
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公开(公告)号：US11598270B2
公开(公告)日：2023-03-07
申请号：US16642728
申请日：2018-09-17
申请人： AUDI AG
发明人： Bernd Barra , Jan Reiker
IPC分类号： F02D17/02 , F01N3/10 , F02D41/02 , F02D41/14 , F02D41/38 , F02P5/15 , F02D37/02 , F02P5/04 , F02D41/00
摘要： An internal combustion engine with a plurality of cylinders is a drive device in which the drive torque available can be reduced. The ignition timing which is set at the internal combustion engine is adjusted in the retarded direction starting from an initial ignition timing until the ignition timing corresponds to a threshold ignition timing. To reduce the drive torque further, at least one cylinder, among the plurality of cylinders, is deactivated by suspending fuel injection into the cylinder, and the remaining cylinder(s) continue to be operated with fuel injection using the ignition timing. The remaining cylinders of the internal combustion engine which continue to be operated are supplied with a quantity of fuel which is larger in comparison with an initial quantity of fuel present before the cylinder deactivation, to set a substoichiometric fuel/oxygen ratio.
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公开(公告)号：US20230057647A1
公开(公告)日：2023-02-23
申请号：US17889552
申请日：2022-08-17
申请人： Purem GmbH
发明人： Wolfgang Datz , Ralph Kanzleiter
摘要： An exhaust gas system for an internal combustion engine includes at least one component which delimits an exhaust gas flow volume via an outer wall and, on an inner side of the outer wall which faces the exhaust gas flow volume, supports at least one shielding element. An intermediate space is formed between the outer wall and the shielding element. At least one connecting molding on the shielding element is directed toward the outer wall and is connected fixedly to the outer wall.
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公开(公告)号：US11578637B2
公开(公告)日：2023-02-14
申请号：US17647413
申请日：2022-01-07
发明人： Johan Ivarsson , Thomas Magnusson
摘要： An exhaust gas after-treatment device in a driveline application, which device comprising a casing having an upper surface, a lower surface and side surfaces connecting the upper and lower surfaces to form an enclosed volume. The casing is provided with an exhaust inlet opening and an exhaust outlet opening wherein exhaust gas is supplied to and discharged from the casing through the upper surface. At least one of the exhaust inlet and outlet openings is operatively connected to its corresponding inlet or outlet pipe by a pipe connector having a first opening facing the casing and a second opening facing away from the casing. The at least one pipe connector is arranged to be rotatable about the central axis of its associated inlet or outlet opening in the casing into a predetermined angular position relative to the opening in the casing.
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公开(公告)号：US11578634B2
公开(公告)日：2023-02-14
申请号：US17743589
申请日：2022-05-13
发明人： Nathan A. Ottinger , Z. Gerald Liu , Yuanzhou Xi
摘要： An aftertreatment system configured to reduce constituents of an exhaust gas produced by an engine comprises an aftertreatment component and an optical assembly. The optical assembly comprises an optical emitter configured to emit light onto a face of the aftertreatment component, and an optical detector configured to detect light reflected from the face of the aftertreatment component. A controller is configured to determine at least one of an amount of NOx gases or an amount of ammonia on the face of the aftertreatment component based on an optical parameter of the detected light that has reflected from the face of the aftertreatment component.
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公开(公告)号：US20230037326A1
公开(公告)日：2023-02-09
申请号：US17791961
申请日：2021-01-12
申请人： Scania CV AB
发明人： Johan LUNDSTRÖM
摘要： The present invention relates to a method for adaption of an exhaust treatment system arranged for treating an exhaust stream produced by an engine, where the exhaust treatment system includes at least a first additive dosage device, a first selective catalytic reduction catalyst arranged downstream of the first additive dosage device, a second additive dosage device arranged downstream of the first selective catalytic reduction catalyst, and a second selective catalytic reduction catalyst arranged downstream of the second additive dosage device. The method includes initiating an adaption of the second selective catalytic reduction catalyst, and controlling, during the adaption of the second selective catalytic reduction catalyst, the first additive dosage device to inject additive in accordance with at least one injection rule being designed for the adaption.
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