Invention Grant
- Patent Title: System and method of sensor reconditioning in an exhaust aftertreatment system
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Application No.: US16113168Application Date: 2018-08-27
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Publication No.: US10753845B2Publication Date: 2020-08-25
- Inventor: Matthew W. Hormann , Nathan Charles Schattke
- Applicant: CUMMINS EMISSION SOLUTIONS INC.
- Applicant Address: US IN Columbus
- Assignee: Cummins Emission Solutions Inc.
- Current Assignee: Cummins Emission Solutions Inc.
- Current Assignee Address: US IN Columbus
- Agency: Foley & Lardner LLP
- Main IPC: G01N15/06
- IPC: G01N15/06 ; F02D41/14 ; F01N9/00 ; F01N11/00 ; G01N15/00

Abstract:
A system includes: an exhaust aftertreatment system that includes a particulate matter sensor that includes a heating element configured to selectively provide heat to the particulate matter sensor; and a controller programmed to: receive particulate matter data indicating a state of the particulate matter sensor; determine that the particulate matter sensor is in a full state based on the particulate matter data; and activate the heating element to: (i) a first temperature for a first period of time, the first temperature being sufficient to burn off water or ammonia; (ii) a second temperature for a second period of time immediately after the first period of time, the second temperature being greater than the first temperature and being sufficient to burn off urea, biuret, or melamine; and (iii) a third temperature for a third period of time immediately after the second period of time, the third temperature being greater than the second temperature and being sufficient to burn off carbon.
Public/Granted literature
- US20190003950A1 SYSTEM AND METHOD OF SENSOR RECONDITIONING IN AN EXHAUST AFTERTREATMENT SYSTEM Public/Granted day:2019-01-03
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