Invention Grant
- Patent Title: Method and system for leak detection at a particulate filter
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Application No.: US16358588Application Date: 2019-03-19
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Publication No.: US11041423B2Publication Date: 2021-06-22
- Inventor: Eric Beatham , Michiel J. Van Nieuwstadt , Allen Lehmen , Douglas Martin , Raymond Henry Berger
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: McCoy Russell LLP
- Agent Geoffrey Brumbaugh
- Main IPC: F01N11/00
- IPC: F01N11/00 ; F02D41/24 ; B01D37/04 ; F02D41/02 ; F02D41/00
Abstract:
Methods and systems are provided for diagnosing a gasoline particulate filter in an engine exhaust passage. A pressure-flow relationship of the filter is learned in a low engine speed and high engine speed range. Degradation of the filter is identified based on a substantial separation between the curve fits at the high and low speed range.
Public/Granted literature
- US20200300148A1 METHOD AND SYSTEM FOR LEAK DETECTION AT A PARTICULATE FILTER Public/Granted day:2020-09-24
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