公开(公告)号：US20240328337A1

公开(公告)日：2024-10-03

申请号：US18742225

申请日：2024-06-13

申请人： Cummins Emission Solutions Inc.

发明人： Ryan M. Johnson

IPC分类号： F01N3/20 ,  F01N3/035 ,  F01N3/28 ,  F01N13/00

CPC分类号： F01N3/2066 ,  F01N3/035 ,  F01N3/2013 ,  F01N3/2892 ,  F01N13/0097 ,  F01N13/0093 ,  F01N2240/16 ,  F01N2610/02 ,  F01N2610/08

摘要： An exhaust gas aftertreatment system includes: a first decomposition chamber; a first dosing module coupled to the first decomposition chamber and configured to provide a first treatment fluid into the first decomposition chamber; a first conversion catalyst member; a second decomposition chamber; a second dosing module coupled to the second decomposition chamber and configured to provide a second treatment fluid into the second decomposition chamber; a second conversion catalyst member; and a third conversion catalyst member.

公开(公告)号：US12025041B2

公开(公告)日：2024-07-02

申请号：US16796982

申请日：2020-02-21

申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY

发明人： Hai-Ying Chen ,  Eric Tyo

IPC分类号： F01N3/28 ,  F01N3/10 ,  F01N13/00

CPC分类号： F01N3/101 ,  F01N13/0093 ,  F01N13/0097 ,  F01N3/28 ,  F01N2340/02

摘要： A close-coupled catalytic article, and its use in an exhaust system for internal combustion engines, is disclosed. The close-coupled catalytic article for the treatment of an exhaust gas comprising: an upstream substrate and a downstream substrate, wherein the upstream substrate is spaced apart from the downstream substrate, wherein the upstream substrate comprises a first three-way catalyst (TWC) composition and the downstream substrate comprises a second TWC composition, the first and second TWC compositions each comprising an oxygen storage component (OSC), wherein a loading of the OSC in the downstream substrate is greater than a loading of the OSC in the upstream substrate and is at least 2.2 g/in3.

公开(公告)号：US11927126B2

公开(公告)日：2024-03-12

申请号：US17965540

申请日：2022-10-13

申请人： PACCAR Inc

发明人： Charles Wayne Reinhardt Swart ,  Cynthia Chaffin Webb ,  Maarten Meijer ,  Varun Ramesh

IPC分类号： F01N3/20 ,  B01D53/94 ,  F01N11/00 ,  F01N13/00

CPC分类号： F01N3/208 ,  B01D53/9418 ,  B01D53/9495 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/03 ,  F01N2550/05 ,  F01N2610/02 ,  F01N2610/1406 ,  F01N2900/16 ,  F01N2900/1621 ,  F01N2900/1806 ,  F01N2900/1814 ,  F01N2900/1818

摘要： The present disclosure describes methods for evaluating quality of DEF dosed to an EAS including a close coupled SCR unit a downstream SCR unit. A NOx conversion efficiency of the close coupled SCR unit and a NOx conversion efficiency of the downstream SCR unit are used to evaluate quality of DEF. In some embodiments, the NOx conversion efficiency of close coupled SCR unit is used to evaluate quality of DEF. Operation of an EAS using the results of the evaluation of quality of DEF are described.

公开(公告)号：US20240052766A1

公开(公告)日：2024-02-15

申请号：US18268054

申请日：2021-12-17

申请人： Cummins Inc.

发明人： Michael Haas ,  Adam W. Kidd ,  Oxford Peng ,  Shahidur M. Rahman ,  Ananth Vemuri ,  Christophe Tricaud ,  Easwar Yarrabikki

IPC分类号： F01N3/20 ,  F01N13/00 ,  F01N9/00 ,  F01N3/10

CPC分类号： F01N3/208 ,  F01N13/0093 ,  F01N9/005 ,  F01N3/108 ,  F01N2900/0406

摘要： A system includes an aftertreatment system and a controller coupled to the aftertreatment system. The controller is configured to generate a spatially resolved model of a catalyst of the aftertreatment system. The controller is further configured to adjust the spatially resolved model based on one or more sensed values from at least one sensor upstream of the one or more portions and at least one sensor downstream of the one or more portions.

公开(公告)号：US20240003276A1

公开(公告)日：2024-01-04

申请号：US18336689

申请日：2023-06-16

申请人： SAUDI ARABIAN OIL COMPANY

发明人： Omar S. Abdulhamid ,  Noushad Kunnummal ,  Faisal Aljar

IPC分类号： F01N3/08 ,  F01N13/00

CPC分类号： F01N3/0857 ,  F01N13/0093 ,  F01N2240/02 ,  F01N3/021

摘要： A system includes an exhaust gas source that provides exhaust gas pollutants and an adsorbent-filled canister downstream of the exhaust gas source and configured to adsorb exhaust gas pollutants. The systems may further include a heat exchanger. A process includes introducing exhaust gas comprising exhaust gas pollutants into a system that includes an adsorbent-filled canister, such that the exhaust gas may flow through the adsorbent-filled canister and the exhaust gas pollutants may be adsorbed into an adsorption media in the adsorbent-filled canister as adsorbed exhaust gas pollutants. A depleted exhaust gas may pass from the adsorbent-filled canister.

公开(公告)号：US11725564B2

公开(公告)日：2023-08-15

申请号：US16989109

申请日：2020-08-10

申请人： Cummins Inc.

发明人： Aniket Gupta ,  Michael J. Cunningham ,  Michael Haas ,  Govindarajan Kothandaraman

IPC分类号： F01N11/00 ,  F01N3/035 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N13/00

CPC分类号： F01N11/00 ,  F01N3/035 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/2066 ,  F01N13/0093 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1616 ,  F01N2900/1621 ,  Y02T10/12 ,  Y02T10/40

摘要： A method includes acquiring nitrogen oxide (NOx) data indicative of a first amount of NOx in an exhaust flow exiting an engine and a second amount of NOx in the exhaust flow exiting an exhaust aftertreatment system coupled to the engine where the exhaust aftertreatment system including a selective catalytic reduction (SCR) system including a SCR catalyst; determining a NOx conversion efficiency fault is present within the exhaust aftertreatment system based on the first amount of NOx and the second amount of NOx; monitoring an actual amount of NOx in the exhaust flow downstream of the SCR catalyst; determining an expected amount of NOx downstream of the SCR catalyst; and determining the SCR catalyst is responsible for the NOx conversion efficiency fault in response to the actual amount of NOx differing from the expected amount of NOx by more than a threshold amount.

公开(公告)号：US20230167757A1

公开(公告)日：2023-06-01

申请号：US17821983

申请日：2022-08-24

申请人： VOLVO TRUCK CORPORATION

发明人： Björn HENRIKSSON ,  Sebastian PELTO-PIRI ,  Mikael FORSBERG

IPC分类号： F01N3/20 ,  F01N13/00

CPC分类号： F01N3/2053 ,  F01N13/0093 ,  F01N13/0097 ,  F01N13/017 ,  F01N3/2066 ,  F01N9/00

摘要： An aftertreatment system connected downstream an internal combustion engine arrangement for receiving exhaust gases conveyed from the internal combustion engine arrangement during operation thereof, wherein the aftertreatment system comprises first and second catalytic devices in series, wherein a gap is there between.

公开(公告)号：US20190128167A1

公开(公告)日：2019-05-02

申请号：US16176574

申请日：2018-10-31

申请人： Faurecia Emissions Control Technologies, USA, LLC

发明人： Robin H. Willats ,  Adam Mathews ,  John Rohde ,  Alfred N. Tucker

IPC分类号： F01N3/20 ,  F01N3/035 ,  F01N3/10 ,  F01N3/28

CPC分类号： F01N3/2066 ,  F01N3/021 ,  F01N3/035 ,  F01N3/108 ,  F01N3/2821 ,  F01N13/009 ,  F01N13/0093 ,  F01N2250/02 ,  F01N2330/22 ,  F01N2340/02 ,  F01N2470/08 ,  F01N2470/10 ,  F01N2470/24 ,  F01N2570/14 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/1453

摘要： An automotive vehicle includes an exhaust aftertreatment system. The exhaust aftertreatment system includes a mixer, a doser that injects a reducing agent into the mixer, and a selective catalytic reduction unit. The exhaust aftertreatment system mixes exhaust gases and the reducing agent for treatment prior to the exhaust gases being discharged into the atmosphere. Some components of the exhaust aftertreatment system are positioned proximate to an associated combustion engine to minimize thermal energy loss from the exhaust gases prior to interaction with the exhaust aftertreatment system.

公开(公告)号：US20180363534A1

公开(公告)日：2018-12-20

申请号：US16110880

申请日：2018-08-23

申请人： CUMMINS EMISSION SOLUTIONS INC.

发明人： Nassim Khaled

IPC分类号： F01N13/00 ,  F01N9/00 ,  F01N3/20 ,  B01D53/94

CPC分类号： F01N13/0093 ,  B01D53/9418 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/1821 ,  Y02T10/24 ,  Y02T10/47

摘要： A method for asynchronously delivering a reductant to a first selective catalytic reduction system and a second selective catalytic reduction system of an aftertreatment system via a reductant insertion assembly, the reductant insertion assembly comprising a first injector fluidly coupled to the first selective catalytic reduction system and a second injector fluidly coupled to the second selective catalytic reduction system, the method including: activating the first injector; maintaining the first injector activated for a first delivery time, thereby inserting a first amount of reductant into the first selective catalytic reduction system; deactivating the first injector; activating the second injector; and maintaining the second injector activated for a second delivery time, thereby inserting a second amount of reductant into the second selective catalytic reduction system.

公开(公告)号：US20180355824A1

公开(公告)日：2018-12-13

申请号：US15984196

申请日：2018-05-18

申请人： Ford Global Technologies, LLC

发明人： Moritz Klaus Springer ,  Helmut Hans Ruhland ,  Jan Mehring ,  Thomas Lorenz

IPC分类号： F02M26/06 ,  F01N3/10 ,  F01N13/10 ,  F02B37/18 ,  F02M26/22 ,  F02B75/20

CPC分类号： F02M26/06 ,  F01N3/0835 ,  F01N3/0871 ,  F01N3/101 ,  F01N3/30 ,  F01N13/0093 ,  F01N13/10 ,  F01N13/107 ,  F01N2240/36 ,  F01N2340/06 ,  F01N2410/06 ,  F01N2430/10 ,  F01N2900/1602 ,  F02B37/18 ,  F02B75/20 ,  F02B2075/1812 ,  F02M26/22

摘要： Methods and systems are provided for a close-coupled aftertreatment device. In one example, a system may include an engine comprising separate first and second overall exhaust lines, where a blow-off line branches off of the second overall exhaust line, and where the close-coupled aftertreatment device is arranged in the blow-off line and configured to receive exhaust gases during at least a cold-start of the engine.