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公开(公告)号：US20230143888A1
公开(公告)日：2023-05-11
申请号：US17802494
申请日：2021-02-11
IPC分类号： F01N3/28 , F01N3/20 , B01F23/213 , B01F25/10 , B01F25/314 , B01F35/00 , B01D53/94
CPC分类号： F01N3/2892 , B01D53/9431 , B01F23/2132 , B01F25/103 , B01F25/3141 , B01F35/55 , F01N3/2066 , B01F2025/913 , F01N2610/1453
摘要： An aftertreatment system comprises: a housing, a SCR system disposed in the housing. A mixer is disposed upstream of the SCR system and includes: a hub, a tubular member disposed circumferentially around the hub and defining a reductant entry port, and plurality of vanes extending from the hub to the tubular member such that openings are defined between adjacent vanes. The plurality of vanes swirl the exhaust gas in a circumferential direction. A reductant injector is disposed on the housing upstream of the SCR system along a transverse axis and configured to insert a reductant into the exhaust gas flowing through the housing through the reductant entry port. The reductant is inserted at a non-zero angle with respect to the transverse axis opposite the circumferential direction to achieve virtual interception. A mixer central axis is radially offset with respect to a housing central axis of the housing.
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公开(公告)号：US11578634B2
公开(公告)日：2023-02-14
申请号：US17743589
申请日：2022-05-13
发明人： Nathan A. Ottinger , Z. Gerald Liu , Yuanzhou Xi
摘要： An aftertreatment system configured to reduce constituents of an exhaust gas produced by an engine comprises an aftertreatment component and an optical assembly. The optical assembly comprises an optical emitter configured to emit light onto a face of the aftertreatment component, and an optical detector configured to detect light reflected from the face of the aftertreatment component. A controller is configured to determine at least one of an amount of NOx gases or an amount of ammonia on the face of the aftertreatment component based on an optical parameter of the detected light that has reflected from the face of the aftertreatment component.
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公开(公告)号：US11982219B2
公开(公告)日：2024-05-14
申请号：US18071189
申请日：2022-11-29
发明人： Z. Gerald Liu , Apoorv Kalyankar , Achuth Munnannur , Niklas M. Schmidt , Roy W. Detra , Mihai Chiruta
CPC分类号： F01N3/2803 , F01N3/208 , F01N3/2892 , F01N3/2066 , F01N2240/20 , F01N2470/30 , F01N2610/02 , F01N2610/1453 , F01N2610/146
摘要： A multi-stage mixer includes a multi-stage mixer inlet, a multi-stage mixer outlet, a first flow device, and a second flow device. The multi-stage mixer inlet is configured to receive exhaust gas. The multi-stage mixer outlet is configured to provide the exhaust gas to a catalyst. The first flow device is configured to receive the exhaust gas from the multi-stage mixer inlet and to receive reductant such that the reductant is partially mixed with the exhaust gas within the first flow device. The first flow device includes a plurality of main vanes and a plurality of main vane apertures. The plurality of main vane apertures is interspaced between the plurality of main vanes. The plurality of main vane apertures is configured to receive the exhaust gas and to cooperate with the plurality of main vanes to provide the exhaust gas from the first flow device with a swirl flow.
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公开(公告)号：US11193853B2
公开(公告)日：2021-12-07
申请号：US16750987
申请日：2020-01-23
发明人： Nathan A. Ottinger , Z. Gerald Liu , Rafael Ernesto Vasquez Lombardo , Krishna Pradeep Chilumukuru
摘要： A sensing assembly comprises a sensor housing having a sensing end and a coupling end opposite the sensing end. A sensing element and a heating element are disposed within the sensor housing. A tip cover and coupling end cover removably coupled to the ends of the sensor housing. The tip cover and coupling end cover are configured to be uncoupled from the sensor housing to enable removal of at least one of the sensing element, the heating element, or an integrated sensing/heating element from the sensor housing, and replacement with at least one of a new sensing element or a new heating element, the tip cover and coupling end cover configured to be recoupled to the sensor housing after at least one of the new sensing element or the new heating element is disposed in the sensor housing.
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公开(公告)号：US20210062698A1
公开(公告)日：2021-03-04
申请号：US17002368
申请日：2020-08-25
摘要： An exhaust gas aftertreatment system includes a first sensor configured to measure a parameter and a second sensor disposed proximate the first sensor and configured to measure the parameter. The system includes a controller configured to initially utilize the first sensor as a primary sensor. At target intervals, the controller is configured to receive a first sensor value from the first sensor and receive a second sensor value from the second sensor. The controller is configured to calculate a difference between the first sensor value and the second sensor value and determine if the difference between the first sensor value and the second sensor value is greater than a threshold value. If the difference between the first and second sensor values is greater than the threshold value, the controller is configured to stop utilizing the first sensor as the primary sensor and utilize the second sensor as the primary sensor.
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公开(公告)号：US20180135489A1
公开(公告)日：2018-05-17
申请号：US15567029
申请日：2016-04-18
发明人： Nathan A. Ottinger , Z. Gerald Liu , Yuanzhou Xi , Rebecca A. Veele , Changsheng C. Su , Niklas Schmidt
CPC分类号： F01N3/208 , B01D53/9409 , B01D53/9418 , B01D53/96 , B01D2255/20761 , B01D2255/50 , B01D2258/012 , B01J29/072 , B01J29/76 , B01J29/90 , B01J37/0246 , B01J37/06 , B01J38/48 , B01J2229/30 , F01N2370/04 , F01N2610/12
摘要： A method for increasing a catalytic efficiency of a catalyst, comprising providing a catalyst. Finally, the catalyst is installed into a selective catalytic reduction system of an aftertreatment system configured to reduce constituents of an exhaust gas generated by an engine. The catalyst is soaked in a liquid which consists essentially of one of water or a water-comprising solution. The soaking occurs at least one of before or after installing the catalyst in the selective catalytic reduction system. The catalyst can include a copper zeolite catalyst.
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公开(公告)号：US12104517B2
公开(公告)日：2024-10-01
申请号：US17423823
申请日：2020-01-10
发明人： Changsheng C. Su , Yuanzhou Xi , Jinqian Gong , Ramakrishna Gopal Dontha , Nathan A. Ottinger , Z. Gerald Liu , James C. Clerc
CPC分类号： F01N3/208 , B01J6/001 , B01J29/723 , F01N2570/14
摘要： A method includes: providing a SCR system comprising a SCR catalyst; heating the SCR system to a temperature greater than 500 degrees Celsius for a predetermined time so as to increase sulfur resistance of the SCR catalyst; and installing the SCR system in an aftertreatment system.
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公开(公告)号：US11905867B2
公开(公告)日：2024-02-20
申请号：US17740891
申请日：2022-05-10
CPC分类号： F01N3/0842 , F01N3/035 , F01N3/103 , F01N3/106 , F01N3/2066 , F01N9/00 , F01N13/008 , F01N13/0093 , F01N2240/14 , F01N2250/02 , F01N2560/02 , F01N2560/05 , F01N2560/08 , F01N2570/14 , F01N2610/02 , F01N2610/03 , F01N2900/0416 , F01N2900/1404 , F01N2900/16 , F01N2900/18
摘要： An exhaust gas aftertreatment system includes: a first sensor configured to measure a parameter in the exhaust gas aftertreatment system; a second sensor configured to measure the parameter in the exhaust gas aftertreatment system, the second sensor disposed proximate the first sensor; and at least one controller configured to alternately receive sensor values from the first sensor for a first target period of time, and receive sensor values from the second sensor for a second target period of time.
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9.发明公开公开(公告)号：US20230160326A1
公开(公告)日：2023-05-25
申请号：US18075031
申请日：2022-12-05
发明人： Changsheng C. Su , A. Carl McDonald , Ramakrishna Gopal Dontha , Niklas M. Schmidt , Nathan A. Ottinger , Z. Gerald Liu , James C. Clerc , Yujun Wang
CPC分类号： F01N3/021 , F01N9/002 , F01N9/005 , F01N2430/04 , F01N2610/102 , F01N2610/12 , F01N2610/1426 , F01N2610/1453 , F01N2900/1611
摘要： An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.
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10.发明授权公开(公告)号：US11519310B2
公开(公告)日：2022-12-06
申请号：US17430645
申请日：2019-02-15
发明人： Changsheng C. Su , A. Carl McDonald, Jr. , Ramakrishna Gopal Dontha , Niklas M. Schmidt , Nathan A. Ottinger , Z. Gerald Liu , James C. Clerc , Yujun Wang
摘要： An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.
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