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公开(公告)号：US10436097B2
公开(公告)日：2019-10-08
申请号：US15539954
申请日：2015-12-22
发明人： Yi Liu , Qiang Liu , Arvind V. Harinath , Changsheng C. Su , Behnam Bahrami , A. Carl McDonald , Stephen M. Holl
摘要： An aftertreatment system includes a filtration and reduction unit. The filtration and reduction unit comprises a housing defining an internal volume. A filter is disposed in the internal volume and is configured to substantially remove particulates from the exhaust gas. A selective catalytic reduction system is disposed in the internal volume downstream of the filter and is configured to selectively reduce a portion of the exhaust gas. A first catalyst is formulated to oxidize at least a portion of the exhaust gas. An intake pipe is disposed upstream of the filtration and reduction unit and configured to communicate the exhaust gas to the filtration and reduction unit. The first catalyst is disposed in the intake pipe. An exhaust pipe is disposed downstream of the filtration and reduction unit.
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公开(公告)号：US20190134563A1
公开(公告)日：2019-05-09
申请号：US15807204
申请日：2017-11-08
CPC分类号： B01D53/94 , B01D39/2082 , B01D39/2093 , B01D2239/025 , B01D2239/0492 , B01D2239/0654 , B01D2239/1216 , B01D2239/1233 , B01D2239/125 , B01D2255/915 , B01J35/04 , F01N3/0226 , F01N2330/06
摘要： A particulate filter for use in an exhaust aftertreatment system includes a ceramic substrate and a plurality of ceramic nanofibers associated with pores of the ceramic substrate. The plurality of ceramic nanofibers may be positioned on pores of the ceramic substrate, within pore channels of the ceramic substrate, or both on pores of the ceramic substrate and within pore channels of the ceramic substrate.
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公开(公告)号：US20170266649A1
公开(公告)日：2017-09-21
申请号：US15458415
申请日：2017-03-14
CPC分类号： B01J35/0006 , B01D53/944 , B01D53/9477 , B01D2255/9035 , B01D2255/904 , B01D2255/905 , B01D2255/912 , B01D2258/012 , F01N3/0814 , F01N3/0835 , F01N3/103
摘要： An oxidation catalyst may include hydrocarbon storage material. One implementation relates to a diesel oxidation catalyst that includes a catalyst having a front zone and a rear zone and a gradient of hydrocarbon storage material on the catalyst extending from the front zone to the rear zone. The gradient of hydrocarbon storage material, may comprise a linear gradient, a step gradient, a parabolic gradient, a logarithmic gradient, or other forms thereof.
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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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5.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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6.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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公开(公告)号：US10099212B2
公开(公告)日：2018-10-16
申请号：US15458415
申请日：2017-03-14
摘要： An oxidation catalyst may include hydrocarbon storage material. One implementation relates to a diesel oxidation catalyst that includes a catalyst having a front zone and a rear zone and a gradient of hydrocarbon storage material on the catalyst extending from the front zone to the rear zone. The gradient of hydrocarbon storage material, may comprise a linear gradient, a step gradient, a parabolic gradient, a logarithmic gradient, or other forms thereof.
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公开(公告)号：US11643957B2
公开(公告)日：2023-05-09
申请号：US17778058
申请日：2019-11-22
CPC分类号： F01N3/208 , B01D53/944 , B01D53/9418 , B01D53/9495 , F01N3/106 , F01N2900/08 , F01N2900/1602 , F01N2900/1806
摘要： A control module for an aftertreatment system that includes a selective catalytic reduction (SCR) catalyst and an oxidation catalyst, comprises a controller configured to be operatively coupled to the aftertreatment system. The controller is configured to determine an actual SCR catalytic conversion efficiency of the SCR catalyst. The controller determines an estimated SCR catalytic conversion efficiency based on a test sulfur concentration selected by the controller. In response to the estimated SCR catalytic conversion efficiency being within a predefined range, the controller sets the test sulfur concentration as a determined sulfur concentration in a fuel provided to the engine. The controller generates a sulfur concentration signal indicating the determined sulfur.
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公开(公告)号：US20220412239A1
公开(公告)日：2022-12-29
申请号：US17778058
申请日：2019-11-22
摘要： A control module for an aftertreatment system that includes a selective catalytic reduction (SCR) catalyst and an oxidation catalyst, comprises a controller configured to be operatively coupled to the aftertreatment system. The controller is configured to determine an actual SCR catalytic conversion efficiency of the SCR catalyst. The controller determines an estimated SCR catalytic conversion efficiency based on a test sulfur concentration selected by the controller. In response to the estimated SCR catalytic conversion efficiency being within a predefined range, the controller sets the test sulfur concentration as a determined sulfur concentration in a fuel provided to the engine. The controller generates a sulfur concentration signal indicating the determined sulfur.
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10.发明申请公开(公告)号：US20220178285A1
公开(公告)日：2022-06-09
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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