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公开(公告)号：US20180238217A1
公开(公告)日：2018-08-23
申请号：US15753494
申请日：2016-08-19
Applicant: Tenneco Automotive Operating Company Inc. , Tenneco GmbH
Inventor： Mark DEVITO , Ryan A. FLOYD , Adam J. KOTRBA , Padmanabha R. ETTIREDDY , Michael C. BRADFORD , Bradley FINGLAND , John W. DEGEORGE , Philipp KREUTZIGER , Manuel KLUCK , Michael FLOCKERT , Mathias HUND , Eric A. HEIN
CPC classification number: F01N3/208 , B01D53/9409 , B01D53/9418 , B01D53/9431 , B01D53/9477 , B01D53/9495 , B01D2251/2062 , F01N3/021 , F01N13/009 , F01N2240/25 , F01N2610/02 , F01N2610/06 , F01N2610/08 , F01N2610/10 , F01N2610/14 , F01N2610/1406 , Y02T10/24
Abstract: An exhaust aftertreatment system may include a reductant tank, a gaseous ammonia source, an injector, first conduit and a second conduit. The injector may receive the liquid reductant from the reductant tank and the gaseous ammonia from the gaseous ammonia source and inject the liquid reductant into a stream of exhaust gas in a first mode, inject the gaseous ammonia into the stream of exhaust gas in a second mode, and both the liquid reductant and the gaseous ammonia into the stream of exhaust gas in a third mode. The first conduit may communicate liquid reductant from the reductant tank to the injector. The second conduit may communicate gaseous ammonia from the gaseous ammonia source to the injector.
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公开(公告)号：US09765715B2
公开(公告)日：2017-09-19
申请号：US15036329
申请日：2014-10-25
Applicant: Daimler AG
Inventor： Peter Hohner , Carsten Zeller
CPC classification number: F02D41/0275 , F01N3/0842 , F01N3/2073 , F01N9/00 , F01N11/007 , F01N13/009 , F01N2240/25 , F01N2430/06 , F01N2550/03 , F01N2560/025 , F01N2560/026 , F01N2560/14 , F01N2900/1622 , F01N2900/1624 , F02D41/1441 , F02D41/146 , F02D41/1475 , F02D2041/1468 , F02D2200/0808 , F02D2200/0816 , Y02T10/24 , Y02T10/47
Abstract: A method for operating an exhaust gas purification system of an internal combustion engine, which can be operated in a lean operating mode and in a rich operating mode, is disclosed. The exhaust gas purification system has, arranged one after the other in the direction of flow of the exhaust gas, an ammonia-forming catalyst, a first exhaust gas sensor, an ammonia-SCR catalyst, a nitrogen oxide storage catalyst and a second exhaust gas sensor. Exhaust gas sensors emit a first signal correlating with the nitrogen oxide content of the exhaust gas and a second signal correlating with the lambda value of the exhaust gas. In diagnostic operation, the ammonia storage capacity of the ammonia-SCR catalyst and the oxygen and optionally the nitrogen oxide storage capacity of the nitrogen oxide storage catalyst can be determined by analyzing the signals of the first and second exhaust gas sensors.
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3.发明授权公开(公告)号：US09765666B2
公开(公告)日：2017-09-19
申请号：US15018993
申请日：2016-02-09
Applicant: Michael A Smith , Craig L Dimaggio , Jeffrey P Wuttke , Andrew Brocker , Travis T Hamilton , Ken Hardman , Cody Baldwin-Squib
Inventor： Michael A Smith , Craig L Dimaggio , Jeffrey P Wuttke , Andrew Brocker , Travis T Hamilton , Ken Hardman , Cody Baldwin-Squib
CPC classification number: F01N3/2073 , F01N3/0814 , F01N3/0842 , F01N3/106 , F01N3/208 , F01N13/008 , F01N13/011 , F01N13/04 , F01N13/107 , F01N2240/25 , F01N2430/02 , F01N2430/06 , F01N2610/02 , F01N2900/1616 , F01N2900/1814 , Y02T10/22 , Y02T10/24
Abstract: A system and method for utilizing fuel as an on-board reductant for selective catalytic reduction of NOx is provided and includes a controller for controlling an engine to produce a lean first exhaust stream and a rich second exhaust stream that are received in respective first and second passageways of a dual path aftertreatment system. The rich second exhaust stream reacts with NOx stored in a NOx storage and reduction catalyst of the second passageway to regenerate this catalyst and generate ammonia. The first exhaust stream and the second exhaust stream having the generated ammonia are combined in a downstream common passageway to form a combined lean exhaust gas stream where the ammonia carried therein is stored or used by an SCR catalyst of the common passageway for NOx reduction. The engine is subsequently controlled to produce a rich first exhaust stream and a lean second exhaust stream.
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公开(公告)号：US09687782B1
公开(公告)日：2017-06-27
申请号：US15014562
申请日：2016-02-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yong Miao
CPC classification number: B01D53/8634 , B01D53/8696 , B01D53/9418 , B01D53/9431 , B01D53/9495 , B01D2251/2062 , B01D2251/2067 , B01D2258/012 , F01N3/021 , F01N3/208 , F01N9/00 , F01N11/00 , F01N13/009 , F01N2240/02 , F01N2240/25 , F01N2390/00 , F01N2410/04 , F01N2610/02 , F01N2610/06 , F01N2610/14 , Y02A50/2325 , Y02T10/24
Abstract: An exhaust gas system for an engine producing an exhaust gas includes an exhaust gas tube configured to receive the exhaust gas. A particulate filter is in fluid communication with the exhaust gas tube and configured to undergo thermal regeneration when the exhaust gas in the particulate filter is heated above a regeneration temperature. A generator unit is positioned downstream of the particulate filter and includes a first catalyst. A tank is configured to store a precursor material. The generator unit is configured to employ the precursor material and the heat generated for the thermal regeneration of the particulate filter to generate an ammonia gas from the precursor material. The system includes a controller having a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of controlling generation of ammonia gas in the generator unit and injection of ammonia gas in the exhaust gas tube.
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公开(公告)号：US20170175605A1
公开(公告)日：2017-06-22
申请号：US15377328
申请日：2016-12-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuriko HAGIMOTO , Takeru SHIRASAWA , Ryohei Ono , Kenji FURUI
CPC classification number: F01N3/208 , B01D46/0027 , B01D53/9418 , B01D53/9431 , B01D53/9495 , B01D2279/30 , F01N3/035 , F01N3/2066 , F01N11/002 , F01N2240/25 , F01N2510/06 , F01N2560/025 , F01N2560/026 , F01N2560/06 , F01N2560/08 , F01N2560/14 , F01N2610/02 , F01N2900/1406 , F01N2900/1622
Abstract: An object of the disclosure is to adjust the ammonia adsorption amount in an SCR catalyst supported on an SCR filter as close as possible to a target adsorption amount in an exhaust gas purification system including the SCR filter. In a system according to the disclosure, the quantity of ammonia supplied by an ammonia supplier is made smaller when a differential pressure change rate at the time when ammonia is supplied by the ammonia supplier is lower than a predetermined threshold than when the differential pressure change rate at the time when ammonia is supplied by the ammonia supplier is equal to or higher than the predetermined threshold. Moreover, when the differential pressure change rate is lower than the predetermined threshold, the change in the quantity of ammonia supplied by the ammonia supplier relative to the change in the filter PM deposition amount is kept equal to zero.
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Patent Agency Ranking
6.发明申请Internal Combustion Engine Having Dedicated Cylinder(s) for Generation of Both EGR and Exhaust Aftertreatment Reductant for NOx-Reducing Catalyst 有权具有用于产生用于NOx还原催化剂的EGR和排气后处理还原剂的专用气缸的内燃机公开(公告)号：US20160047287A1
公开(公告)日：2016-02-18
申请号：US14459135
申请日：2014-08-13
Applicant: Southwest Research Institute
Inventor： Charles E. Roberts, JR. , Cary A. Henry
IPC: F01N3/20
CPC classification number: F01N3/2066 , F01N3/2073 , F01N13/009 , F01N13/011 , F01N13/107 , F01N2240/25 , F01N2610/06 , F02B33/34 , F02B37/127 , F02B37/18 , F02B39/04 , F02M26/05 , F02M26/15 , F02M26/43 , Y02T10/144 , Y02T10/22 , Y02T10/24
Abstract: An exhaust gas recirculation (EGR) system for an internal combustion engine having dedicated EGR and operating at a lean air-fuel ratio. In such engines, one or more cylinders is operable as a dedicated EGR cylinder, such that all of the exhaust produced by the dedicated EGR cylinder(s) may be recirculated to the engine's main (non dedicated) cylinders. Because the engine is lean burn, its exhaust aftertreatment system has a NOx-reducing device. An EGR loop is configured to recirculate EGR from the dedicated EGR cylinder(s) to the engine's intake manifold. A diversion line connects the EGR loop to the exhaust aftertreatment system, thereby delivering EGR as syngas for the NOx-reducing device. The syngas is used either directly as a reductant or to a catalyst that reduces the syngas to ammonia for use as a reductant.
Abstract translation: 一种用于具有专用EGR并以贫空燃比操作的内燃机的废气再循环（EGR）系统。 在这种发动机中，一个或多个气缸可操作为专用的EGR气缸，使得由专用EGR气缸产生的所有排气可以再循环到发动机的主（非专用）气缸。 因为发动机是稀薄燃烧的，其排气后处理系统具有NOx还原装置。 EGR回路构造成将EGR从专用EGR气缸再循环到发动机的进气歧管。 分流管线将EGR回路连接到排气后处理系统，从而输送EGR作为NOx还原装置的合成气。 合成气直接用作还原剂或将合成气还原成氨以用作还原剂的催化剂。
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公开(公告)号：US20160032803A1
公开(公告)日：2016-02-04
申请号：US14445686
申请日：2014-07-29
Applicant: Tenneco Automotive Operating Company Inc.
Inventor： Padmanabha Reddy Ettireddy , Adam J. Kotrba , Thomas Spinks , Boningari Thirupathi , Panagiotis Smirniotis
CPC classification number: F01N3/208 , B01J29/7057 , B01J29/7615 , B01J29/7815 , B01J35/0006 , B01J37/0201 , B01J37/035 , B01J2229/186 , F01N3/021 , F01N3/035 , F01N3/106 , F01N3/2053 , F01N3/2073 , F01N13/009 , F01N2240/25 , F01N2370/04 , F01N2610/02 , F01N2610/1453 , F01N2610/146 , Y02T10/24
Abstract: An aftertreatment system for treating exhaust gas discharged from a combustion engine, the aftertreatment system comprising a low temperature selective-catalytic-reduction catalyst, wherein the low-temperature selective-catalytic-reduction catalyst is a mixture of catalytic metals provided on a beta-zeolite support material, the mixture of catalytic metals being at least one mixture selected from Cu and Ce, Mn and Ce, Mn and Fe, Cu and W, Mn and W, and Ce and W.
Abstract translation: 一种用于处理从内燃机排出的废气的后处理系统，所述后处理系统包括低温选择性催化还原催化剂，其中所述低温选择性催化还原催化剂是提供在β-沸石上的催化金属的混合物 催化金属的混合物是选自Cu和Ce，Mn和Ce，Mn和Fe，Cu和W，Mn和W以及Ce和W的至少一种混合物。
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8.发明授权Method and device for treating exhaust gas condensates of an internal combustion engine 有权一种用于处理内燃机废气冷凝物的方法和装置公开(公告)号：US09217347B2
公开(公告)日：2015-12-22
申请号：US14308289
申请日：2014-06-18
Applicant: Behr GmbH & Co. KG , MAHLE International GmbH
Inventor： Peter Englert , Roger Gorges
CPC classification number: F01N3/0892 , C25B1/00 , F01N3/02 , F01N3/2073 , F01N5/025 , F01N2240/22 , F01N2240/25 , F01N2240/34 , F01N2570/22 , F01N2610/02 , F02M25/12 , F02M26/05 , F02M26/24 , F02M26/35 , F02M26/44 , Y02P20/129 , Y02T10/121 , Y02T10/16 , Y02T10/166
Abstract: A method for treating exhaust gas condensates of an internal combustion engine, in which the exhaust gas condensates containing nitrogen oxides are delivered to an exhaust gas recirculation system and are cooled therein. The nitrogen oxides of the cooled exhaust gas condensates are converted to ammonia through electrolysis.
Abstract translation: 用于处理内燃机的排气冷凝物的方法，其中含有氮氧化物的废气冷凝物被输送到排气再循环系统并在其中冷却。 冷却的废气冷凝物的氮氧化物通过电解转化为氨。
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9.发明授权Technique for production of ammonia on demand in a three way catalyst for a passive selective catalytic reduction system 有权用于生产氨的技术用于被动式选择性催化还原系统的三元催化剂公开(公告)号：US08931257B2
公开(公告)日：2015-01-13
申请号：US13846967
申请日：2013-03-19
Applicant: GM Global Technology Operations LLC
Inventor： Kushal Narayanaswamy , Paul M. Najt
CPC classification number: F01N3/20 , F01N3/2073 , F01N3/208 , F01N2240/25 , F01N2610/00 , F02D41/0082 , F02D41/0087 , F02D41/0235
Abstract: A powertrain includes an internal combustion engine with multiple cylinders and an aftertreatment system having a selective catalytic reduction device utilizing ammonia as a reductant. An ammonia generation cycle includes operating some portion of the cylinders at an air/fuel ratio conducive to producing molecular hydrogen and some portion of the cylinders at an air/fuel ratio conducive to producing NOx. An ammonia generation catalyst is utilized between the engine and the selective catalytic reduction device to produce ammonia.
Abstract translation: 动力系包括具有多个气缸的内燃机和具有利用氨作为还原剂的选择性催化还原装置的后处理系统。 氨生成循环包括以有利于产生分子氢的空气/燃料比操作一些气缸，以及有利于产生NOx的空气/燃料比的一部分气缸。 在发动机和选择性催化还原装置之间使用氨生成催化剂以产生氨。
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10.发明申请公开(公告)号：US20140373509A1
公开(公告)日：2014-12-25
申请号：US14308289
申请日：2014-06-18
Applicant: Behr GmbH & Co. KG , MAHLE International GmbH
Inventor： Peter ENGLERT , Roger GORGES
CPC classification number: F01N3/0892 , C25B1/00 , F01N3/02 , F01N3/2073 , F01N5/025 , F01N2240/22 , F01N2240/25 , F01N2240/34 , F01N2570/22 , F01N2610/02 , F02M25/12 , F02M26/05 , F02M26/24 , F02M26/35 , F02M26/44 , Y02P20/129 , Y02T10/121 , Y02T10/16 , Y02T10/166
Abstract: A method for treating exhaust gas condensates of an internal combustion engine, in which the exhaust gas condensates containing nitrogen oxides are delivered to an exhaust gas recirculation system and are cooled therein. The nitrogen oxides of the cooled exhaust gas condensates are converted to ammonia through electrolysis.
Abstract translation: 用于处理内燃机的排气冷凝物的方法，其中含有氮氧化物的废气冷凝物被输送到排气再循环系统并在其中冷却。 冷却的废气冷凝物的氮氧化物通过电解转化为氨。
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