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1.发明公开公开(公告)号：US20230287841A1
公开(公告)日：2023-09-14
申请号：US17691893
申请日：2022-03-10
发明人： Vikram Sundararajan , Jinqian Gong , Daniel D. Wilhelm , Vijay Ramchandra Kadam , Kerang Wang , Todd A. Corbet
CPC分类号： F02D41/029 , F01N3/023 , F01N3/2066 , F02D41/024 , F01N3/103 , B01D53/9418 , B01D53/9495 , B01D53/944 , F02D2200/0802
摘要： A controller for controlling regeneration in an aftertreatment system comprising a first leg and a second leg is configured to: determine whether regeneration is permitted by the engine based on engine operating parameters; in response to regeneration being permitted, determine whether regeneration is required in at least one of the first leg or the second leg based on operating parameters of the first leg and the second leg, and whether regeneration is inhibited in either the first leg or the second leg; and in response to determining that (i) regeneration is required in at least one of the first or second leg, and (ii) regeneration is not inhibited in either the first or the second leg, cause insertion of hydrocarbons into the engine to thereby increase the temperature of the exhaust gas to a target temperature and cause regeneration in each of the first and second leg.
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2.发明授权公开(公告)号：US12092048B2
公开(公告)日：2024-09-17
申请号：US17691893
申请日：2022-03-10
发明人： Vikram Sundararajan , Jinqian Gong , Daniel D. Wilhelm , Vijay Ramchandra Kadam , Kerang Wang , Todd A. Corbet
CPC分类号： F02D41/029 , B01D53/9418 , B01D53/944 , B01D53/9495 , F01N3/023 , F01N3/103 , F01N3/2066 , F02D41/024 , F02D2200/0802
摘要： A controller for controlling regeneration in an aftertreatment system comprising a first leg and a second leg is configured to: determine whether regeneration is permitted by the engine based on engine operating parameters; in response to regeneration being permitted, determine whether regeneration is required in at least one of the first leg or the second leg based on operating parameters of the first leg and the second leg, and whether regeneration is inhibited in either the first leg or the second leg; and in response to determining that (i) regeneration is required in at least one of the first or second leg, and (ii) regeneration is not inhibited in either the first or the second leg, cause insertion of hydrocarbons into the engine to thereby increase the temperature of the exhaust gas to a target temperature and cause regeneration in each of the first and second leg.
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公开(公告)号：US10781739B2
公开(公告)日：2020-09-22
申请号：US16213045
申请日：2018-12-07
发明人： Tony J. Hall , Yinghuan Lei , Weiwen Wang , Daniel D. Wilhelm
摘要： A system can include an engine, an aftertreatment system with a particulate filter, and a controller. The controller is configured to compare a time value since a last delta pressure soot load estimate process to a predetermined time threshold. Responsive to the time value being greater than or equal to the predetermined time threshold, the controller decreases a flow threshold value to a lower flow threshold value. If the flow amount is greater than or equal to the lower flow threshold value, then the controller activates a delta pressure soot load estimation process. A combined soot load estimate is then calculated using a delta pressure soot load estimation of the delta pressure soot load estimate process responsive to the lower flow threshold value.
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公开(公告)号：US20240209762A1
公开(公告)日：2024-06-27
申请号：US18145649
申请日：2022-12-22
CPC分类号： F01N3/208 , F01N11/00 , F01N2550/02 , F01N2560/026 , F01N2560/14 , F01N2900/0416
摘要： A system, method, and apparatus for sensor tampering detection are provided. An aftertreatment system comprises a first leg comprising a first Selective Catalytic Reduction (SCR) system, a first doser, and a first NOx sensor, a second leg comprising a second SCR system, a second doser, and a second NOx sensor, and a controller. The controller determines satisfaction of enabling conditions. The controller doses reductant to the first and second SCR systems. The controller determines NOx values of the first SCR system and the second SCR system. The controller adjust the dosing of the first SCR system for a time period. The controller measures NOx values of the first SCR system and the second SCR system. The controller determines a difference between the third and first NOx values and a difference between the fourth and second NOx values. The controller generates an indication regarding whether the first NOx sensor is displaced.
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公开(公告)号：US10273858B2
公开(公告)日：2019-04-30
申请号：US14957100
申请日：2015-12-02
发明人： Tony J. Hall , Yinghuan Lei , Weiwen Wang , Daniel D. Wilhelm
摘要： A system can include an engine, an aftertreatment system with a particulate filter, and a controller. The controller is configured to compare a time value since a last delta pressure soot load estimate process to a predetermined time threshold. Responsive to the time value being greater than or equal to the predetermined time threshold, the controller decreases a flow threshold value to a lower flow threshold value. If the flow amount is greater than or equal to the lower flow threshold value, then the controller activates a delta pressure soot load estimation process. A combined soot load estimate is then calculated using a delta pressure soot load estimation of the delta pressure soot load estimate process responsive to the lower flow threshold value.
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公开(公告)号：US20190107029A1
公开(公告)日：2019-04-11
申请号：US16213045
申请日：2018-12-07
发明人： Tony J. Hall , Yinghuan Lei , Weiwen Wang , Daniel D. Wilhelm
摘要： A system can include an engine, an aftertreatment system with a particulate filter, and a controller. The controller is configured to compare a time value since a last delta pressure soot load estimate process to a predetermined time threshold. Responsive to the time value being greater than or equal to the predetermined time threshold, the controller decreases a flow threshold value to a lower flow threshold value. If the flow amount is greater than or equal to the lower flow threshold value, then the controller activates a delta pressure soot load estimation process. A combined soot load estimate is then calculated using a delta pressure soot load estimation of the delta pressure soot load estimate process responsive to the lower flow threshold value.
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公开(公告)号：US20170159535A1
公开(公告)日：2017-06-08
申请号：US14957100
申请日：2015-12-02
发明人： Tony J. Hall , Yinghuan Lei , Weiwen Wang , Daniel D. Wilhelm
CPC分类号： F01N11/002 , F01N3/021 , F01N3/206 , F01N3/2066 , F01N9/00 , F01N9/002 , F01N13/008 , F01N13/009 , F01N2560/08 , F01N2570/14 , F01N2610/02 , F01N2900/0416 , F01N2900/08 , F01N2900/1606 , Y02T10/20 , Y02T10/47
摘要： A system can include an engine, an aftertreatment system with a particulate filter, and a controller. The controller is configured to compare a time value since a last delta pressure soot load estimate process to a predetermined time threshold. Responsive to the time value being greater than or equal to the predetermined time threshold, the controller decreases a flow threshold value to a lower flow threshold value. If the flow amount is greater than or equal to the lower flow threshold value, then the controller activates a delta pressure soot load estimation process. A combined soot load estimate is then calculated using a delta pressure soot load estimation of the delta pressure soot load estimate process responsive to the lower flow threshold value.
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