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公开(公告)号：US20230347326A1
公开(公告)日：2023-11-02
申请号：US18301310
申请日：2023-04-17
发明人： Daniel AVIS , Rafal BARAN , Gavin BROWN , Alexander GREEN , Neil GREENHAM , Matthew HARRIS , Oliver HEMMING , Carmelo IACONO , Caitlin JENKINS , Alanna MURPHY , Paul PHILLIPS
CPC分类号： B01J29/7615 , B01J23/72 , B01J35/0006 , F01N3/208 , F01N3/2828 , B01D53/9418 , B01D53/9495 , B01D53/9472 , F01N2610/02 , F01N2370/04 , F01N2610/1453 , B01D2251/2062 , B01D2255/20738 , B01D2255/502 , B01D2255/20761 , B01D2255/9032
摘要： A method of treating exhaust gas from a lean burn internal combustion engine is disclosed. The method comprises: introducing ammonia or an ammonia precursor into the exhaust gas upstream of an Fe-SCR catalyst, the Fe-SCR catalyst comprising iron and a zeolite; and contacting the exhaust gas with the Fe-SCR catalyst; wherein the amount of ammonia or ammonia precursor introduced into the exhaust gas upstream of the Fe-SCR catalyst is controlled to provide an ammonia-to-NOx molar ratio (ANR) in the exhaust gas contacting the Fe-SCR catalyst of from greater than 2 to 6.
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公开(公告)号：US20240011421A1
公开(公告)日：2024-01-11
申请号：US18472272
申请日：2023-09-22
IPC分类号： F01N3/20 , F01N3/022 , F01N3/035 , F01N3/08 , B01J23/10 , B01J35/04 , B01J35/00 , B01D53/94 , B01D53/02
CPC分类号： F01N3/2066 , F01N3/0222 , F01N3/035 , F01N3/0835 , B01J23/10 , B01J35/04 , B01J35/0006 , B01D53/9436 , B01D53/02 , F01N2430/08 , F01N2370/02 , F01N2370/22 , F01N2610/02 , B01D2255/1021 , B01D2255/1023 , B01D2257/702 , B01D2257/406 , B01D2258/012
摘要： A system comprising (i) a vehicular compression ignition engine comprising one or more engine cylinders and one or more electronically-controlled fuel injectors therefor; (ii) an exhaust line for the engine comprising: a first emissions control device comprising a first honeycomb substrate, which comprises a hydrocarbon adsorbent component; and a second emissions control device comprising an electrically heatable element and a catalysed second honeycomb substrate, which comprises a rhodium-free platinum group metal comprising platinum, wherein the electrically heatable element is disposed upstream from the catalysed second honeycomb substrate and wherein both the electrically heatable element and the catalysed second honeycomb substrate are disposed downstream from the first honeycomb substrate; a third emissions control device, which is a third honeycomb substrate comprising an ammonia-selective catalytic reduction catalyst disposed downstream from the second emissions control device; and one or more temperature sensors located: upstream of the electrically heatable element and/or upstream of the first honeycomb substrate; and between the electrically heatable element and the catalysed second honeycomb substrate; and (iii) an engine control unit comprising a central processing unit pre-programmed, when in use, to control both a heating activation state of the electrically heatable element; an injection timing strategy of the one or more electronically-controlled fuel injector to increase the temperature of at least the first emissions control device following key-on/cold-starting a vehicle comprising the system, wherein the one or more temperature sensors are electrically connected to the engine control unit for feedback control in the system.
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3.发明公开公开(公告)号：US20230278018A1
公开(公告)日：2023-09-07
申请号：US17754813
申请日：2020-10-13
发明人： Andrew Francis CHIFFEY , Kieran COLE , Oliver COOPER , Christopher DALY , Lee Alexander GILBERT , Robert HANLEY , David MICALLEF , Francois MOREAU , Paul PHILLIPS , George PLATT
IPC分类号： B01J35/00 , B01J23/44 , B01J23/58 , B01J21/12 , B01J23/34 , B01J23/10 , B01J29/76 , B01J35/04 , B01J35/10 , F01N3/10 , F01N3/021 , F01N3/28 , B01D53/94 , B01D46/84
CPC分类号： B01J35/0006 , B01J23/44 , B01J23/58 , B01J21/12 , B01J23/34 , B01J23/10 , B01J29/76 , B01J35/04 , B01J35/1061 , B01J35/0066 , F01N3/103 , F01N3/021 , F01N3/2828 , B01D53/944 , B01D53/9472 , B01D46/84 , F01N2370/04 , F01N2510/063 , F01N2330/48 , B01D2255/9155 , B01D2255/9032 , B01D2255/1021 , B01D2255/1023 , B01D2255/2042 , B01D2258/012 , B01D2255/9202 , B01D2255/2073 , B01D2255/9207
摘要： A compression ignition internal combustion engine (30) for a heavy-duty diesel vehicle comprising an exhaust system (32) comprising a composite oxidation catalyst (12, 42) and a soot filter substrate (44, 50) disposed downstream from the composite oxidation catalyst comprising: a substrate (5), preferably a honeycomb flow-through substrate monolith, having a total length L and a longitudinal axis and having a substrate surface extending axially between a first substrate end (I) and a second substrate end (O); two catalyst washcoat zones (1, 2) arranged axially in series on and along the substrate surface, wherein a first catalyst washcoat zone (1) having a length L1 and comprising a first catalyst washcoat layer (9), wherein L1 48.8 g/l (>0.8 g/in3), wherein a total platinum group metal loading in the first catalyst washcoat zone (1) defined in grams of platinum group metal per litre of substrate volume (g/l) is greater than a total platinum group metal loading in the second catalyst washcoat zone (2) and wherein the first catalyst washcoat zone (1) comprises one or more first alkaline earth metal components, preferably barium, supported on the first refractory metal oxide support material.
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公开(公告)号：US20220281752A1
公开(公告)日：2022-09-08
申请号：US17652777
申请日：2022-02-28
发明人： Kaneshalingam ARULRAJ , Guy R. CHANDLER , Jillian COLLIER , Raquel GARCIA , Alexander GREEN , Nicholas MCNAMARA , Paul PHILLIPS , Maria Pia RUGGERI , Alessandro TURRINA
摘要： The present invention is directed to a method of preparing a synthetic crystalline material, designated as JMZ-12, with a framework built up by the disorder AEI and CHA structures, substantially free of framework phosphorous and prepared preferably in the absence of halides such as fluoride ions. Such method comprises the step of heating a reaction mixture under crystallization conditions for a sufficient period to form a disordered zeolite having both CHA and AEI topologies, wherein the reaction mixture comprises at least one source of aluminum, at least one source of silicon, a source of alkaline or alkaline-earth cations, and a structure directing agent containing at least one source of quaternary ammonium cations and at least one source of alkyl-substituted piperidinium cations in a molar ratio of 0.20 to about 1.4. The resulting zeolites are useful as catalysts, particularly when used in combination with exchanged transition metal(s) and, optionally, rare earth metal(s).
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5.发明申请公开(公告)号：US20220152589A1
公开(公告)日：2022-05-19
申请号：US17594694
申请日：2020-06-26
发明人： Andrew CHIFFEY , Kieran John COLE , Oliver COOPER , Christopher DALY , Lee GILBERT , Robert HANLEY , David MICALLEF , Francois MOREAU , Paul PHILLIPS , George PLATT
摘要： A composite oxidation catalyst (18, 20) for use in an exhaust system for treating an exhaust gas produced by a vehicular compression ignition internal combustion engine (30) and upstream of a particulate matter filter (44, 50) in the exhaust system comprises a substrate (5) having a total length L and a longitudinal axis and having a substrate surface extending axially between a first substrate end (I) and a second substrate end (O); and three or more catalyst washcoat zones (1, 2, 3; or 1, 2, 3, 4) arranged axially in series on and along the substrate surface, wherein a first catalyst washcoat zone (1) having a length L1, wherein L1
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6.发明公开公开(公告)号：US20240091745A1
公开(公告)日：2024-03-21
申请号：US18493835
申请日：2023-10-25
发明人： Andrew CHIFFEY , Kieran COLE , Oliver COOPER , Christopher DALY , Lee GILBERT , Robert HANLEY , David MICALLEF , Francois MOREAU , Paul PHILLIPS , George PLATT
CPC分类号： B01J23/44 , B01J21/08 , B01J23/42 , B01J37/0215 , F01N3/0231 , F01N3/10 , F01N2570/10 , F01N2570/12 , F01N2570/14
摘要： A composite oxidation catalyst for use in an exhaust system for treating an exhaust gas produced by a vehicular compression ignition internal combustion engine is disclosed. The composite oxidation catalyst comprises a honeycomb flow-through substrate monolith and two catalyst washcoat zones arranged axially in series on and along the substrate surface.
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公开(公告)号：US20220282650A1
公开(公告)日：2022-09-08
申请号：US17597854
申请日：2020-08-04
摘要： A system (2) comprising (i) a vehicular compression ignition engine (1) comprising one or more engine cylinders and one or more electronically-controlled fuel injectors therefor; (ii) an exhaust line (3) for the engine comprising: a first emissions control device (5) comprising a first honeycomb substrate, which comprises a hydrocarbon adsorbent component; and a second emissions control device (7) comprising an electrically heatable element (7a) and a catalysed second honeycomb substrate (7b), which comprises a rhodium-free platinum group metal (PGM) comprising platinum, wherein the electrically heatable element (7a) is disposed upstream from the catalysed second honeycomb substrate (7b) and wherein both the electrically heatable element (7a) and the catalysed second honeycomb substrate (7b) are disposed downstream from the first honeycomb substrate; a third emissions control device (22), which is a third honeycomb substrate comprising an ammonia-selective catalytic reduction catalyst disposed downstream from the second emissions control device (7); and one or more temperature sensors located: upstream of the electrically heatable element and/or upstream of the first honeycomb substrate; and between the electrically heatable element (7a) and the catalysed second honeycomb substrate (7b); and (iii) an engine control unit (20) comprising a central processing unit pre-programmed, when in use, to control both a heating activation state of the electrically heatable element (7a); an injection timing strategy of the one or more electronically-controlled fuel injector to increase the temperature of at least the first emissions control device following key-on/cold-starting a vehicle comprising the system, wherein the one or more temperature sensors are electrically connected to the engine control unit for feedback control in the system.
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