-
公开(公告)号：US20220220879A1
公开(公告)日：2022-07-14
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.
-
公开(公告)号：US11383224B2
公开(公告)日：2022-07-12
申请号：US16837065
申请日：2020-04-01
发明人： Janet Fisher , Amy Kolpin , David Thompsett
摘要： The present disclosure is directed to compositions comprising Ce-containing mixed oxides, especially those having a stoichiometry of LnyCexMwOz; where 0.15≤x≤0.5, y≤0.25, w=(1−x−y)≥0.5, and z=(2x+2w+1.5y); M is Zr, Hf, Ti, Sn or Ge or a combination thereof; Ln is Y and/or one or more rare earth metals, exclusive of Ce, and the uses of these compositions. These compositions are characterized by the even distribution of the Ce in the lattice of the mixed oxide.
-
公开(公告)号：US20220212170A1
公开(公告)日：2022-07-07
申请号：US17595321
申请日：2020-06-23
申请人： BASF Corporation
发明人： Shiang SUNG , Xiaolai ZHENG , Aleksei VJUNOV , Chunxin JI , Karifala DUMBUYA
IPC分类号： B01J23/46 , B01J35/00 , B01J37/08 , B01J37/03 , B01J23/10 , B01J37/04 , B01J35/04 , B01D53/94 , F01N3/10 , F01N3/28
摘要： The presently claimed invention provides a catalytic article and an exhaust gas treatment system. The catalytic article comprises platinum supported on a first support comprising ceria containing metal oxide component; rhodium supported on a second support selected from a refractory alumina component, an oxygen storage component or a combination thereof; and a substrate, wherein said catalytic article is essentially free of palladium. The presently claimed invention also provides a process for preparing the catalytic article and use of the catalytic article and the exhaust gas treatment system for purifying a gaseous exhaust stream comprising hydrocarbons, carbon monoxide, and nitrogen oxide.
-
公开(公告)号：US20220212169A1
公开(公告)日：2022-07-07
申请号：US17595320
申请日：2020-06-17
申请人： BASF Corporation
发明人： Aleksei VJUNOV , Michel DEEBA
IPC分类号： B01J23/42 , B01J23/10 , B01J23/44 , B01J23/46 , B01J23/755 , B01J35/00 , B01J35/04 , B01D53/94 , F01N3/10 , F01N3/28
摘要： The presently claimed invention relates an automotive catalyst system which can be used to selectively reduce carbon monoxide. The system comprises a first close coupled three-way conversion catalytic article in fluid communication with an engine exhaust outlet, a catalytic article located downstream of and in fluid communication with the first close coupled three-way conversion catalytic article, a tail-pipe catalytic article arranged downstream in fluid communication and 1.0 to 10 feet away from the catalytic article at a position selected from before or behind a resonator, before or after a muffler, between the resonator and the muffler, inside the muffler, inside the resonator, and at a tail pipe end.
-
公开(公告)号：US11377994B2
公开(公告)日：2022-07-05
申请号：US17235749
申请日：2021-04-20
发明人： Gerhard Haft
摘要： A method for exhaust gas aftertreatment in a gasoline engine and an exhaust gas aftertreatment system are provided. In the method, two catalytic converters arranged in the exhaust gas tract of the gasoline engine are operated in different states. A first three-way catalytic converter is operated in a slightly low-oxygen range, and a second three-way catalytic converter is operated in a slightly oxygen-rich range. Secondary air is furthermore blown into the exhaust gas tract between the two three-way catalytic converters. It is thereby possible to reduce the output of emissions of the gasoline engine to a great extent. An exhaust gas aftertreatment system is likewise explained.
-
公开(公告)号：US11377993B2
公开(公告)日：2022-07-05
申请号：US17283344
申请日：2019-10-17
申请人： UMICORE AG & CO. KG
摘要： Subject of the invention is an exhaust gas purification system for a gasoline engine, comprising in consecutive order the following devices: a first three-way-catalyst (TWC1), a gasoline particulate filter (GPF) and a second three-way-catalyst (TWC2), wherein the wash coat load (WCL) of the TWC2 is greater than the WCL of the GPF, wherein the WCL is determined in g/l of the volume of the device. The invention also relates to methods in which the system is used and uses of the system.
-
公开(公告)号：US11376566B2
公开(公告)日：2022-07-05
申请号：US16469885
申请日：2017-12-13
发明人： Katsumi Nochi , Koji Higashino , Tomotsugu Masuda
摘要： Provided is a catalyst for removing NOx from a combustion exhaust gas, in particular, a low-NOx combustion exhaust gas, wherein the catalyst has a ratio of a pore volume in a range of not less than 500 Å and not more than 3000 Å in a pore diameter relative to a total pore volume of not less than 15% and not more than 40% and preferably a ratio of a pore volume in a range of not less than 1000 Å in the pore diameter relative to the total pore volume of not less than 10% and not more than 45% in a pore volume distribution in a range of not more than 105 Å in the pore diameter, and where SILICA is unlikely to be deposited and even when the amount of SILICA deposited is increased, denitration performance is hardly lowered.
-
公开(公告)号：US20220203339A1
公开(公告)日：2022-06-30
申请号：US17595335
申请日：2020-06-23
申请人： BASF Corporation
发明人： Xiaolai ZHENG , Aleksei VJUNOV , Michel DEEBA , Shiang SUNG , Pascaline TRAN
IPC分类号： B01J23/46 , B01J35/00 , B01J37/03 , B01J37/08 , B01J23/44 , B01J21/04 , B01J23/10 , B01J35/04 , B01J23/02 , B01D53/94 , F01N3/28 , F01N3/10 , F01N13/00
摘要： The presently claimed invention provides a layered catalytic article and an exhaust system. The catalytic article comprises a first layer comprising platinum, a first platinum group metal component other than platinum, a ceria-alumina composite, and an oxygen storage component; wherein platinum is supported on the ceria-alumina component; the platinum group metal component is selected from palladium, rhodium or a combination thereof and the platinum group metal component is supported on the oxygen storage component; a second layer comprising a second platinum group metal component; and a refractory alumina component, an oxygen storage component or a combination thereof; wherein the second platinum group component is selected from platinum, palladium, rhodium or a combination thereof; and a substrate, wherein the amount of platinum is 10 to 80 wt. %, based on the total weight of platinum, palladium and rhodium. The presently claimed invention also provides a process for the preparation of a layered catalytic article and use of the catalytic article and the exhaust system for purifying a gaseous exhaust stream comprising hydrocarbons, carbon monoxide, and nitrogen oxides.
-
公开(公告)号：US20220203337A1
公开(公告)日：2022-06-30
申请号：US17600640
申请日：2020-03-31
发明人： Do-kyun Lee , Sang-yun Han , Seung Chul Na
摘要： Disclosed is an exhaust gas purification catalyst with a multilayered structure including an ultra-thin layer with a thickness of 20 micrometers or less and containing Rh, Pd, or both as at least one precious metal component, and to a method of manufacturing the same. The method includes a step of forming an ultra-thin layer having a thickness of 20 micrometers or less as the top layer of the catalyst by applying a polymer coating solution containing a polymer having a functional group capable of chelating with the precious metal component(s) on the surface of the multilayer structure of the catalyst. The disclosed catalyst exhibits improved removal efficiency for THC, CO, and NOx contained compared to an existing thin film-type catalyst. Since the disclosed catalyst is coated with a thin coating layer containing at least a portion of precious metal components, the disclosed catalyst exhibits improved performance while using the same amount of precious metal components as in conventional catalysts.
-
110.发明授权公开(公告)号：US11364485B2
公开(公告)日：2022-06-21
申请号：US17301737
申请日：2021-04-13
发明人： Dongsheng Qiao , Jingwen Wang , Xiang Zheng
IPC分类号： B01J23/10 , B01J23/44 , B01J23/46 , B01J35/00 , B01J37/03 , B01J37/08 , B01D53/94 , F01N3/10 , F01N3/28 , F02B43/10
摘要： A three-way catalyst article, and its use in an exhaust system for compressed natural gas engines, is disclosed. The catalyst article for treating exhaust gas from compressed natural gas (CNG) engine comprising: a substrate comprising an inlet end, an outlet end with an axial length L; a first catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the first catalytic region comprises a first PGM component; and a second catalytic region beginning at the inlet end, wherein the second catalytic region comprises a second PGM component; wherein the first PGM component comprises palladium, platinum, or a combination thereof; and wherein the second PGM component comprises rhodium.
-
-
-
-
-
-
-
-
-
搜索结果
6764 条记录 (耗时 0.04 秒)
