公开(公告)号：US20220136421A1

公开(公告)日：2022-05-05

申请号：US17090279

申请日：2020-11-05

申请人： Cummins Inc.

发明人： Jinyong Luo ,  Xiaobo Song ,  Colin L. Norris ,  Xin Jin ,  Matthew L. Anderson ,  Ying Yuan

IPC分类号： F01N3/20

摘要： The enclosed disclosure relates to vehicle systems in which an engine, a particulate filter fluidly coupled with the engine, a selective catalytic reduction (SCR) system fluidly coupled with the engine downstream of the particulate filter, an electrical heating device implemented with the particulate filter, and a controller operatively coupled with the engine and the electrical heating device, are implemented. The controller can detect, when the engine is turned off, a condition for turning on the engine, detect a temperature of the particulate filter of the SCR system, activate the electrical heating device in response to the detected temperature being below a lower temperature threshold, and turn on the engine in response to the detected temperature being at or above the lower temperature threshold.

公开(公告)号：US20210324775A1

公开(公告)日：2021-10-21

申请号：US17235684

申请日：2021-04-20

申请人： Cummins Inc.

发明人： Di Wang ,  Richard J. Ancimer ,  Michael J. Cunningham ,  Aleksey Yezerets ,  Jinyong Luo ,  Yadan Tang ,  Yuhui Zha

IPC分类号： F01N3/20 ,  F01N3/08 ,  B01J37/08 ,  B01J23/72

摘要： Systems, apparatuses, and methods include predicting a sulfur exposure of one or more copper-zeolite catalysts deployed in an exhaust aftertreatment system; comparing the predicted sulfur exposure to a predefined sulfur exposure threshold; and responsive to the determination, heating the exhaust aftertreatment catalyst to a predefined heat treatment temperature for a predefined time period to desulfate the one or more copper-zeolite catalysts.

公开(公告)号：US20180363528A1

公开(公告)日：2018-12-20

申请号：US16062266

申请日：2016-12-27

申请人： CUMMINS INC.

发明人： Jinyong Luo ,  Ashok Kumar ,  Krishna Kamasamudram ,  Neal W. Currier ,  Aleksey Yezerets ,  Yadan Tang ,  Michael J. Cunningham ,  Di Wang

IPC分类号： F01N3/20 ,  F01N11/00 ,  B01J29/90 ,  B01J38/52 ,  B01J38/62

摘要： A method of recovering selective catalytic reduction catalysts relates to metal-Zeolite based catalysts. A selective catalytic reduction catalyst service event where a metal-Zeolite based selective catalytic reduction catalyst of an exhaust aftertreatment system may perform below a threshold level of performance is determined. The selective catalytic reduction catalyst then exposed to a recovery fluid selected to facilitate movement of metal ions.

公开(公告)号：US20220388514A1

公开(公告)日：2022-12-08

申请号：US17337016

申请日：2021-06-02

申请人： Cummins Inc.

发明人： Kristopher R. Bare ,  Kenneth M. Follen ,  Xing Jin ,  Jinyong Luo ,  Manik Narula ,  Andrew W. Osburn ,  Anant Puri ,  Xiaobo Song ,  Ying Yuan

IPC分类号： B60W30/18 ,  F02M31/12 ,  B60W20/20 ,  B60W20/30

摘要： A method for managing emissions from a vehicle having an aftertreatment system is provided. The method includes: receiving, by a controller, information indicative of a temperature of an aftertreatment system of the vehicle and a power output of an engine of the vehicle; comparing, by the controller, the temperature of the aftertreatment system to a temperature threshold; comparing, by the controller, the power output to a power output threshold; and responsive to the comparisons, commanding, by the controller, an aftertreatment system heater to selectively engage and disengage to warm the aftertreatment system of the vehicle.

公开(公告)号：US11220944B2

公开(公告)日：2022-01-11

申请号：US16062266

申请日：2016-12-27

申请人： CUMMINS INC.

发明人： Jinyong Luo ,  Ashok Kumar ,  Krishna Kamasamudram ,  Neal W. Currier ,  Aleksey Yezerets ,  Yadan Tang ,  Michael J. Cunningham ,  Di Wang

IPC分类号： F01N3/20 ,  F01N11/00 ,  B01J29/06 ,  B01J38/60 ,  B01J29/90 ,  B01J38/52 ,  B01J38/62

摘要： A method of recovering selective catalytic reduction catalysts relates to metal-Zeolite based catalysts. A selective catalytic reduction catalyst service event where a metal-Zeolite based selective catalytic reduction catalyst of an exhaust aftertreatment system may perform below a threshold level of performance is determined. The selective catalytic reduction catalyst then exposed to a recovery fluid selected to facilitate movement of metal ions.

公开(公告)号：US20220275747A1

公开(公告)日：2022-09-01

申请号：US17748559

申请日：2022-05-19

申请人： CUMMINS INC.

发明人： Jinyong Luo ,  Xiaobo Song ,  Xing Jin ,  David Schmidt ,  Lu Qiu ,  Lisa A. Orth-Farrell ,  Ying Yuan ,  Manik Narula ,  Lars K. Henrichsen

IPC分类号： F01N3/28 ,  F01N3/08 ,  F02D29/06 ,  F01N9/00 ,  B01D53/94 ,  B01D53/02

摘要： A system includes a catalyst for receiving and treating exhaust gas generated by an engine, a passive NOx adsorber (PNA) positioned upstream of the catalyst, a bypass valve positioned upstream of the catalyst and the PNA, and a controller. The controller is configured to, determine that the catalyst is operating under cold start conditions, control the bypass valve to direct exhaust gas to the PNA, determine that the catalyst is no longer operating under cold start conditions and continue to control the bypass valve to direct exhaust gas to the PNA for a predetermined duration, and after the elapse of the predetermined duration, control the bypass valve to direct exhaust gas to the catalyst bypassing the PNA. The controller is also configured to detect a high transient torque demand while the exhaust gas is provided to the PNA, and split the torque demand between the engine and an electric motor.

公开(公告)号：US20170122175A1

公开(公告)日：2017-05-04

申请号：US15407819

申请日：2017-01-17

申请人： Cummins Inc.

发明人： Ashko Kumar ,  Krishna Kamasamudram ,  Jinyong Luo

IPC分类号： F01N3/28 ,  B01J35/04 ,  B01J35/00 ,  B01J29/076 ,  F01N3/10 ,  B01J23/22 ,  F01N3/035 ,  F01N13/00 ,  F01N3/20 ,  B01D53/94 ,  B01J29/072

CPC分类号： F01N3/2803 ,  B01D53/9418 ,  B01D53/9477 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9032 ,  B01D2255/904 ,  B01D2255/911 ,  B01D2255/9155 ,  B01D2258/012 ,  B01J23/22 ,  B01J29/072 ,  B01J29/076 ,  B01J35/0006 ,  F01N3/035 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N13/0097 ,  F01N2370/04 ,  F01N2510/063 ,  F01N2510/0682 ,  F01N2610/02 ,  Y02T10/24

摘要： Unique SCR catalyst including multiple washcoat formulations with differing performance characteristics are disclosed. One exemplary embodiment is an apparatus including a catalyst substrate defining a plurality of flow channels leading from an inlet to an outlet, a first washcoat composition distributed over a first portion of the flow channels, and a second washcoat composition distributed over a second portion of the flow channels. The first washcoat composition has a lower ammonia storage density than the second washcoat composition.