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公开(公告)号：US20240360779A1
公开(公告)日：2024-10-31
申请号：US18687625
申请日：2022-08-31
申请人： Purem Novi, Inc.
发明人： Jack Riddle, II , Hyde Kani
摘要： The teachings may find particular use in providing thermal enhancement, such as with hydrocarbon, to a catalyst for regeneration and particulate burn-off of a filter. The teachings relate to an exhaust aftertreatment apparatus including: a) a reactor portion, b) a mixer located within the reactor portion, including: i) an outer tube; ii) an inner tube located within the outer tube; iii) an outer passage formed between a wall of the reactor portion and the outer tube; iv) an intermediate passage formed between the outer tube and the inner tube; and iv) an inner passage formed within the inner tube; and c) an injector in fluid communication with the reactor portion and upstream from the mixer, wherein the injector is configured to spray a reactant into the reactor portion such that it mixes with the exhaust stream in the mixer.
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公开(公告)号：US20240133333A1
公开(公告)日：2024-04-25
申请号：US18547783
申请日：2021-02-25
CPC分类号： F01N13/10 , F01N3/28 , F01N13/14 , F02B75/228 , F02B77/11
摘要： [Task] A task is to make a V-type engine compact while suppressing the decrease in the output thereof.
[Solution] A V-type engine 1 includes an engine body (3) including a crankcase (7) configured to rotatably support a crankshaft (11), and a pair of cylinder banks (8, 9) extending from the crankcase (7), a pair of exhaust pipes (31, 32) connected to the pair of cylinder banks (8, 9), a catalyst pipe (34) connected to the pair of exhaust pipes (31, 32), and a catalyst (33) accommodated in the catalyst pipe (34), wherein each of the pair of exhaust pipes (31, 32) is connected to the catalyst pipe (34) on an upstream side of the catalyst (33) in an exhaust direction, and the catalyst pipe (34) is arranged adjacently to the pair of cylinder banks (8, 9).-
公开(公告)号：US20240068388A1
公开(公告)日：2024-02-29
申请号：US17894151
申请日：2022-08-23
申请人： Caterpillar Inc.
摘要： A diesel exhaust fluid (DEF) nozzle includes a first conduit, an outlet of the first conduit defining an inlet of a first mixing chamber; and a second conduit disposed around the first conduit, an outer surface of the first conduit and an inner surface of the second conduit defining a second flow path therebetween. A flow area of the second flow path decreases from an inlet of the second flow path to a throat, and increases from the throat to an outlet of the second flow path. The inner surface of the second conduit defines a peripheral wall of the first mixing chamber, and a peripheral wall of a second mixing chamber, the first flow path and the second flow path being in fluid communication with the second mixing chamber via the first mixing chamber.
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公开(公告)号：US11712685B2
公开(公告)日：2023-08-01
申请号：US17301109
申请日：2021-03-25
发明人： Yannick Bidal , Hai-Ying Chen , Joseph Fedeyko , Neil Greenham , Matthew Harris , Jing Lu
IPC分类号： B01D53/94 , B01J29/76 , B01J29/44 , B01J29/78 , B01J29/80 , B01J35/10 , B01J37/02 , F01N3/20 , F01N3/28
CPC分类号： B01J29/763 , B01D53/9418 , B01J29/44 , B01J29/76 , B01J29/78 , B01J29/783 , B01J29/80 , B01J35/1014 , B01J35/1019 , B01J37/0244 , B01D2255/1021 , B01D2255/2073 , B01D2255/20761 , B01D2255/504 , B01D2255/904 , B01D2255/9022 , B01D2255/9207 , B01J2229/62 , F01N3/2066 , F01N3/28 , F01N2370/02
摘要： The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst comprising a Cu- and Mn-exchanged molecular sieve; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO2-Al2O3 mixed oxide. The platinum may be fixed on the support in solution.
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公开(公告)号：US20230212969A1
公开(公告)日：2023-07-06
申请号：US18085464
申请日：2022-12-20
申请人： Denis Dufort
发明人： Denis Dufort
CPC分类号： F01N3/005 , F01N3/05 , F01N3/0205 , F01N3/038 , F01N3/28 , B01D53/002 , B01D53/94
摘要： An exhaust gas liquefying device is provided for reducing pollution from vehicles includes a casing generally comprised of two interconnected chambers. The casing is attached to the rear portion of a vehicle such as a car or small truck. The casing has an entry port to collect the exhaust gas from an exhaust pipe coming from the vehicle. At least one fan provides additional air and a condenser coil cools down the exhaust gas into a liquid which precipitates the carbon in the carbon dioxide. The added ambient air provided by the fan helps in evaporating the liquid which exits from an evacuation port.
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公开(公告)号：US11661878B2
公开(公告)日：2023-05-30
申请号：US17737641
申请日：2022-05-05
申请人： PACCAR Inc
CPC分类号： F01N3/208 , B01D53/9431 , B01D53/9495 , F01N3/28 , F01N3/2066 , F01N13/009 , F01N13/0093 , F01N2570/14 , F01N2590/08 , F01N2610/02 , F01N2610/146 , F01N2900/0422 , F01N2900/1404 , F01N2900/1602
摘要： A heavy duty truck includes a diesel engine that generates an exhaust gas flow and an exhaust after-treatment system for treatment of the exhaust gas flow. The exhaust after-treatment system includes at least one temperature sensor at an underbody SCR system within the exhaust after-treatment system and a DEF injector upstream of a close-coupled SCR system within the exhaust after-treatment system. The DEF injector is operated to inject DEF into the exhaust gas flow at a rate that varies as a function of a temperature measured by the temperature sensor.
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公开(公告)号：US20190249584A1
公开(公告)日：2019-08-15
申请号：US16277799
申请日：2019-02-15
申请人： MAN Truck & Bus AG
CPC分类号： F01N3/28 , B01F3/04049 , B01F5/0057 , B01F5/0451 , B01F5/0648 , B01F2005/0022 , B01F2005/0091 , F01N3/2066 , F01N3/2892 , F01N2470/24
摘要： An apparatus for mixing an exhaust gas stream with an additive, in particular a reducing agent. The apparatus has a mixing pipe for mixing the exhaust gas stream with the additive. The apparatus has a first deflection pipe for deflecting the exhaust gas stream, in particular by about 180°. The exhaust gas stream can be fed to the mixing pipe on the end side via the first deflection pipe. The first deflection pipe has a fastening region for attaching an additive injector to the first deflection pipe. The first deflection pipe has a swirl generating wall region arranged on the end side with respect to the mixing pipe and is configured to impart a swirl to the exhaust gas stream.
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公开(公告)号：US20190249582A1
公开(公告)日：2019-08-15
申请号：US16395403
申请日：2019-04-26
CPC分类号： F01N3/208 , F01N3/2066 , F01N3/28 , F01N2410/00 , F01N2610/02 , F01N2610/144 , F01N2610/1473 , F01N2900/0408 , F01N2900/1808 , Y02T10/24
摘要： An aftertreatment system comprises a reductant storage tank and a SCR system including a catalyst for reducing constituents of an exhaust gas. A reductant insertion assembly is fluidly coupled to the reductant storage tank and the SCR system. A controller is communicatively coupled to the reductant insertion assembly. The controller is configured to: determine an initial pressure of the reductant, determine a first pressure at which the reductant is to be delivered to the selective catalytic reduction system and adjust an operating parameter of the reductant insertion assembly. The adjustment of the operating parameter results in an at least selective delivery of the reductant at the first pressure to the SCR system.
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公开(公告)号：US20190218962A1
公开(公告)日：2019-07-18
申请号：US16223163
申请日：2018-12-18
发明人： Masanori SAEKI
CPC分类号： F02B37/18 , F01N3/28 , F01N2560/02 , F02B37/02 , F02B77/086
摘要： A turbine housing includes an accommodation space that accommodates a turbine wheel, a discharge passage connected to the accommodation space, and a bypass passage that extends from the scroll passage bypassing the accommodation space and is connected to the discharge passage. The bypass passage extends so that an end surface on an upstream side of the catalytic device is located on a center axis of the bypass passage. An air-fuel ratio sensor is located closer to a center axis of the accommodation space than the center axis of the bypass passage. A protuberance that protrudes from an inner wall surface of the discharge passage is located between the accommodation space and the air-fuel ratio sensor. The protuberance protrudes toward the center axis of the accommodation space.
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公开(公告)号：US20180272318A1
公开(公告)日：2018-09-27
申请号：US15764038
申请日：2016-09-12
发明人： Eiji KIYONAGA , Kenji HIKINO , Keiichiro MORITA , Masatake HARUTA , Toru MURAYAMA , Makoto MINO
CPC分类号： F01N3/2842 , B01D53/8628 , B01D53/90 , B01D53/9418 , B01D53/9436 , B01D53/96 , B01D2251/206 , B01D2255/20707 , B01D2255/20723 , B01D2255/9207 , B01D2258/012 , B01D2259/4566 , B01J23/22 , B01J23/92 , B01J35/002 , B01J35/1014 , B01J37/0009 , B01J37/0219 , B01J37/036 , B01J37/08 , B01J37/082 , B01J37/088 , B01J38/02 , B01J38/485 , B01J38/64 , B01J38/66 , F01N3/0205 , F01N3/021 , F01N3/2066 , F01N3/208 , F01N3/28 , F01N3/2803 , F01N5/02 , F01N13/009 , F01N2330/00 , F01N2330/06 , F01N2330/08 , F01N2330/42 , F01N2370/02 , F01N2510/068 , F01N2570/14 , F01N2590/02 , F01N2610/02 , Y02T10/16
摘要： There is provided a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A denitration catalyst contains 3.3 wt % or more of vanadium oxide in terms of vanadium pentoxide and has a BET specific surface area of 10 m2/g or more.
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