公开(公告)号：US20210102488A1

公开(公告)日：2021-04-08

申请号：US17247506

申请日：2020-12-14

Applicant: Cummins Inc.

Inventor： Michael Haas ,  Krishna Kamasamudrum ,  Ashok Kumar

IPC: F01N11/00 ,  F01N3/08 ,  F02D41/02

Abstract: Systems, apparatuses, and methods include an upstream exhaust analysis circuit structured to determine a characteristic of an exhaust gas stream entering a nitrous oxide (NOx) storage catalyst; a prediction circuit structured to predict a downstream NOx concentration of an exhaust gas stream exiting the NOx storage catalyst based on a model of a NOx storage capacity or a dynamic response of the NOx storage catalyst; a downstream exhaust analysis circuit structured to determine a downstream NOx concentration of the exhaust gas stream exiting the NOx storage catalyst; and a comparison circuit structured to compare the predicted downstream NOx concentration to the determined downstream NOx concentration, and determine a health of the NOx storage catalyst based on the comparison.

公开(公告)号：US20200095916A1

公开(公告)日：2020-03-26

申请号：US16138453

申请日：2018-09-21

Applicant: Cummins Inc.

Inventor： Michael Haas ,  Krishna Kamasamudrum ,  Ashok Kumar

IPC: F01N11/00 ,  F01N3/08 ,  F02D41/02

Abstract: Systems, apparatuses, and methods include an upstream exhaust analysis circuit structured to determine a characteristic of an exhaust gas stream entering a nitrous oxide (NOx) storage catalyst; a prediction circuit structured to predict a downstream NOx concentration of an exhaust gas stream exiting the NOx storage catalyst based on a model of a NOx storage capacity or a dynamic response of the NOx storage catalyst; a downstream exhaust analysis circuit structured to determine a downstream NOx concentration of the exhaust gas stream exiting the NOx storage catalyst; and a comparison circuit structured to compare the predicted downstream NOx concentration to the determined downstream NOx concentration, and determine a health of the NOx storage catalyst based on the comparison.

公开(公告)号：US11719151B2

公开(公告)日：2023-08-08

申请号：US17872926

申请日：2022-07-25

Applicant: Cummins Inc.

Inventor： Michael Haas ,  Krishna Kamasamudrum ,  Ashok Kumar

IPC: F01N11/00 ,  F01N9/00 ,  F01N3/08 ,  F02D41/02

CPC classification number: F01N11/002 ,  F01N9/005 ,  F01N11/007 ,  F01N3/0814 ,  F01N3/0842 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2900/1614 ,  F02D41/0245

Abstract: A system includes a controller configured to perform an enable operation responsive to receiving information indicative of an enable parameter, the enable operation includes: determining a predicted downstream NOx value of an exhaust gas stream exiting a NOx storage catalyst; determining a downstream NOx value of the exhaust gas stream exiting the NOx storage catalyst; determining an error between the predicted downstream NOx value and the determined downstream NOx value; comparing the error to an error threshold; and determining that the NOx storage catalyst is in good health responsive to determining that the error does not exceed the error threshold. The controller is further configured to perform a disable operation responsive to receiving information indicative of a disable parameter, the disable operation causing a deactivation of at least a portion of the controller.

公开(公告)号：US20220356833A1

公开(公告)日：2022-11-10

申请号：US17872926

申请日：2022-07-25

Applicant: Cummins Inc.

Inventor： Michael Haas ,  Krishna Kamasamudrum ,  Ashok Kumar

IPC: F01N9/00 ,  F01N3/20 ,  F01N3/08 ,  F01N11/00

Abstract: A system includes a controller configured to perform an enable operation responsive to receiving information indicative of an enable parameter, the enable operation includes: determining a predicted downstream NOx value of an exhaust gas stream exiting a NOx storage catalyst; determining a downstream NOx value of the exhaust gas stream exiting the NOx storage catalyst; determining an error between the predicted downstream NOx value and the determined downstream NOx value; comparing the error to an error threshold; and determining that the NOx storage catalyst is in good health responsive to determining that the error does not exceed the error threshold. The controller is further configured to perform a disable operation responsive to receiving information indicative of a disable parameter, the disable operation causing a deactivation of at least a portion of the controller.