公开(公告)号：US20240328340A1

公开(公告)日：2024-10-03

申请号：US18395886

申请日：2023-12-26

申请人： SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： WEN NIE ,  CHENGYI LIU ,  YUN HUA ,  WEIMIN CHENG ,  XIAO YAN ,  FENGNING YU ,  ZILIAN ZHU ,  JIE LIAN ,  CHENWANG JIANG ,  CHUANXING CHENG ,  HAONAN ZHANG

IPC分类号： F01N3/28 ,  F01N3/035 ,  F01N3/24

CPC分类号： F01N3/2892 ,  F01N3/033 ,  F01N3/035 ,  F01N3/037 ,  F01N3/24 ,  F01N13/009 ,  F01N2330/38 ,  F01N2470/30 ,  F01N2560/026 ,  F01N2590/08 ,  Y02A50/20

摘要： A swirl structure-based exhaust aftertreatment device for an underground mining diesel vehicle comprises a water tank, a PM collection tank, an inlet tube, a high-speed rotary exhaust separator, an exhaust catalytic converter, a circulating NOx selective catalytic reduction system and an exhaust tube. The high-speed rotary exhaust separator comprises a Laval tube, a throat tube, a swirl tube and a first deposition tube. The concentration of toxic and harmful components in exhaust can be decreased below a concentration threshold, thus avoiding pipeline blockage caused by PM accumulation.

公开(公告)号：US12104513B2

公开(公告)日：2024-10-01

申请号：US18262442

申请日：2022-01-31

申请人： DINEX A/S

发明人： Alexandru Serban

IPC分类号： F01N13/00 ,  B01D46/00 ,  B01D53/94 ,  F01N1/12 ,  F01N3/021 ,  F01N3/033 ,  F01N3/035 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/28 ,  F01N13/14 ,  F01N13/18

CPC分类号： F01N13/0097 ,  B01D46/0027 ,  B01D53/9431 ,  B01D53/944 ,  B01D53/9477 ,  F01N3/0211 ,  F01N3/035 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/2803 ,  F01N3/2892 ,  F01N13/14 ,  F01N13/1805 ,  B01D2259/4566 ,  B01D2279/30 ,  F01N1/12 ,  F01N3/0335 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/2882 ,  F01N13/017 ,  F01N2610/01 ,  F01N2610/02 ,  F01N2610/03

摘要： An exhaust gas treatment system comprising a first and a second structure being in fluid communication and defining a flow path of the exhaust gases, the second structure being supported by the first structure, the first structure comprising a first catalytic converter downstream a mixing chamber, the first catalytic converter having a fluid connection to an outlet of exhaust gases, the second structure including a filter unit housing removably connected to the first structure and to an inlet module by a filter unit housing fixing, the second structure defining a longitudinal axis, the filter unit housing including a filter unit, and the inlet module including a second catalytic converter and having a fluid connection to an inlet of exhaust gases, the filter unit housing and/or the inlet module being configured to allow its removal from the exhaust gas treatment system.

公开(公告)号：US20240309789A1

公开(公告)日：2024-09-19

申请号：US18547049

申请日：2022-02-18

申请人： PUREM NOVI, INC.

发明人： Jack Riddle II ,  Lisa Robins ,  Yan Shu ,  John Padalis ,  Gary McKissick ,  Hyde Kani

IPC分类号： F01N3/28 ,  F01N3/20

CPC分类号： F01N3/2892 ,  F01N3/2066 ,  F01N2240/20 ,  F01N2470/02 ,  F01N2610/1453

摘要： An exhaust aftertreatment apparatus comprising: a) a reactor portion which is tubular and has a flow axis parallel with its longitudinal axis, wherein the reactor portion is configured to receive an exhaust stream in a first end region; b) a mixer located within the reactor portion and located downstream of the first end region, wherein the mixer includes at least a portion of a mixing tube which extends at an angle transverse to the longitudinal axis of the reactor portion; c) an outer tube located about at least a portion of the mixing tube and projecting from an exterior of the reactor portion; and d) an injector in fluid communication with the outer tube and the mixing tube and distanced from the reactor portion, wherein the injector is configured to spray a reductant toward the outer tube and the mixing tube.

公开(公告)号：US20240286726A1

公开(公告)日：2024-08-29

申请号：US18660606

申请日：2024-05-10

申请人： MARATHON PETROLEUM COMPANY LP

发明人： Stephen Daniel Ernst ,  James A. Tomlinson

IPC分类号： B63H21/32 ,  B63H20/24 ,  B63H21/34 ,  F01N1/08 ,  F01N1/16 ,  F01N3/023 ,  F01N3/28 ,  F01N13/00 ,  F01N13/08 ,  F01N13/18

CPC分类号： B63H21/32 ,  F01N13/004 ,  F01N13/085 ,  B63H20/24 ,  B63H20/245 ,  B63H21/34 ,  F01N1/085 ,  F01N1/161 ,  F01N1/163 ,  F01N3/0235 ,  F01N3/0236 ,  F01N3/2892 ,  F01N13/082 ,  F01N13/1816 ,  F01N13/1822 ,  F01N2240/22 ,  F01N2490/12 ,  F01N2490/16 ,  F01N2490/18 ,  F01N2490/20 ,  F01N2590/02 ,  F01N2590/022

摘要： An embodiment of an exhaust handling system for a marine vessel includes a cap connected to a top end portion of an exhaust stack of the marine vessel to form an enclosure at least partially surrounding an outlet of an exhaust pipe extending through the exhaust stack. In addition, the exhaust handling system includes a collection pipe in fluid communication with the cap such that the collection pipe is to receive exhaust from the enclosure, and a coupling connected to the collection pipe that is to connect to an exhaust cleaning assembly. The exhaust cleaning system includes a tank to receive the exhaust. The cap at least partially defines a first flow path for the exhaust that extends from the enclosure to the atmosphere. The collection pipe at least partially defines a second flow path for the exhaust that extends from the enclosure to the coupling via the collection pipe.

公开(公告)号：US12071886B1

公开(公告)日：2024-08-27

申请号：US18479978

申请日：2023-10-03

申请人： Ford Global Technologies, LLC

发明人： Jason Martz ,  Paul Joseph Tennison ,  Brien Fulton ,  Michiel J. Van Nieuwstadt ,  Eric Kurtz ,  Daniel Joseph Styles

IPC分类号： F01N3/10 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28 ,  F01N3/32 ,  F01N3/36 ,  F01N13/00

CPC分类号： F01N3/208 ,  B01D53/9431 ,  B01D53/944 ,  B01D53/9454 ,  B01D53/9477 ,  B01D53/9495 ,  F01N3/106 ,  F01N3/2013 ,  F01N3/2892 ,  F01N3/32 ,  F01N3/36 ,  F01N13/008 ,  B01D2258/01 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2610/146 ,  F01N2900/1402 ,  F01N2900/1602

摘要： Methods and systems for reducing emissions of an internal combustion engine are described. In one example, an electric heater and a selective reduction catalyst are positioned in a passage downstream of a combustor where urea may be injected to the selective reduction catalyst to reduce NOx emissions that may be generated by the combustor.

公开(公告)号：US12025045B2

公开(公告)日：2024-07-02

申请号：US17889552

申请日：2022-08-17

申请人： Purem GmbH

发明人： Wolfgang Datz ,  Ralph Kanzleiter

IPC分类号： F01N3/28 ,  F01N13/14 ,  F01N3/021 ,  F01N3/10 ,  F01N3/20 ,  F01N13/00 ,  F01N13/18

CPC分类号： F01N3/2892 ,  F01N13/143 ,  F01N3/021 ,  F01N3/106 ,  F01N3/108 ,  F01N3/2066 ,  F01N3/2882 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/1872 ,  F01N2240/20 ,  F01N2250/02 ,  F01N2260/20 ,  F01N2450/22 ,  F01N2530/26 ,  F01N2610/02 ,  F01N2610/1453

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.

公开(公告)号：US20240209765A1

公开(公告)日：2024-06-27

申请号：US18544598

申请日：2023-12-19

申请人： Proventia Oy

发明人： Eero KOTIMÄKI ,  Aki KÄRNÄ

IPC分类号： F01N3/28

CPC分类号： F01N3/2892 ,  F01N2240/20

摘要： A flow guide and a method therein, including dividing by a divider a mixing chamber to input and output sides; supporting a mixing tube in the mixing chamber, receiving exhaust gas by an intake section from the input side; guiding the received exhaust gas by a swirl guide to flow inside the mixing tube towards the second end as a rotating and advancing main flow; mounting a reactant doser by a reactant doser mount such that when in use, it provides reactant to a dosing section; guiding exhaust gas through the divider by the mixing tube; receiving at least most of the rotating and advancing exhaust gas flow by the dosing section; providing a stem guide around the doser when mounted facing the rotating flow, and defining by the stem guide a central opening surrounding the doser when mounted; and guiding, using a passage structure of the stem guide, a side flow out of the rotating flow to a carrier flow around the doser via the central opening.

公开(公告)号：US12012887B2

公开(公告)日：2024-06-18

申请号：US17626956

申请日：2019-07-15

申请人： CUMMINS EMISSION SOLUTIONS INC.

发明人： Reshma Pattan ,  Ryan M. Johnson ,  Mahendra Mittapalli ,  Priyanka S. Kujur

IPC分类号： F01N3/28

CPC分类号： F01N3/2892 ,  F01N3/2882 ,  F01N2240/20

摘要： An inlet assembly for a housing containing an aftertreatment component of an aftertreatment system comprises an inlet conduit configured to be disposed substantially perpendicular to a longitudinal axis of the housing. A flow redirection conduit is disposed downstream of the inlet conduit and is coupled to the end of the housing. A plurality of protrusions project from a sidewall of the flow redirection conduit towards an inlet face of the aftertreatment component and are configured to provide a uniform exhaust gas flow to the inlet face. Alternatively, a flow distribution plate having a plurality of slots defined substantially perpendicular to the longitudinal axis is disposed in the flow redirection conduit, the plate being inclined with respect to the longitudinal axis. The slots are configured to provide a uniform exhaust gas flow to the inlet face.

公开(公告)号：US12006856B1

公开(公告)日：2024-06-11

申请号：US18319239

申请日：2023-05-17

申请人： Caterpillar Inc.

发明人： Joshua Lynn Ratts ,  Abhay Gupta ,  Arnold Myoungjin Kim ,  Eric Lee Schroeder ,  Kenth I. Svensson

IPC分类号： F01N3/20 ,  B01D53/94 ,  F01N3/10 ,  F01N3/28

CPC分类号： F01N3/208 ,  B01D53/9431 ,  B01D53/9477 ,  B01D53/9495 ,  F01N3/106 ,  F01N3/2803 ,  F01N3/2892 ,  B01D2251/2062 ,  B01D2255/102 ,  B01D2255/904 ,  F01N2370/02 ,  F01N2610/03 ,  F01N2610/05 ,  F01N2900/1402

摘要： An internal combustion engine system is described herein. The system uses an additive added to the exhaust of the internal combustion engine to maintain a range of NO2 to NO within a range that provides for a fast SCR reaction in a selective catalyst reduction unit. The additive and the exhaust enter a diesel oxidation catalyst (DOC), whereby the NO2 undergoes a two-stage process. In the first stage, the NO2 from the exhaust is adsorbed onto the precious metal catalyst of the DOC and an atomic oxygen is removed from the NO2, reducing the NO2 to NO. Because of the higher reactivity of the additive, the additive scavenges a portion of the atomic oxygen from the catalyst. During the second stage of the DOC process, the NO is oxidized over the catalyst to form NO2.

公开(公告)号：US20240183299A1

公开(公告)日：2024-06-06

申请号：US18528551

申请日：2023-12-04

申请人： Purem GmbH

发明人： Silas Bräuning ,  Wolfgang Datz ,  Markus Henzler ,  Oleksandr Velyaev ,  Tobias Wolf ,  Arthur Wieland

IPC分类号： F01N3/20 ,  B01D53/94 ,  B01F25/30 ,  B01F25/431 ,  F01N3/28 ,  F01N13/00

CPC分类号： F01N3/2033 ,  B01D53/9418 ,  B01D53/9436 ,  B01D53/944 ,  B01F25/30 ,  B01F25/431 ,  F01N3/2066 ,  F01N3/2892 ,  F01N13/009 ,  B01D2251/2067 ,  B01D2251/208 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2258/012 ,  F01N2610/02 ,  F01N2610/03

摘要： An exhaust-gas treatment arrangement for an exhaust-gas system of a combustion engine has a first exhaust-gas treatment unit and, downstream thereof, an exhaust-gas treatment assembly. The treatment unit and the treatment assembly are arranged axially one after the other in the direction of a flow-path longitudinal axis of a flow path including the treatment unit and the treatment assembly. A hydrocarbon introducer for introducing hydrocarbon into exhaust gas flowing in the flow path is in the flow path substantially axially between the treatment unit and the treatment assembly. The hydrocarbon introducer includes an introduction ring flow channel annularly surrounding the flow-path longitudinal axis. The channel is open in an upstream end region toward an outlet region of the treatment unit and is open in a downstream end region toward an inlet region of the treatment assembly. The hydrocarbon introduction assembly includes a discharging unit for discharging hydrocarbon into the channel.