Particulate matter sensor hardware protection in after-run
US10914223B1 · kind B1 · utility
1Cited by
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16Claims
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Key dates
| Filing date | Jul 26, 2019 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Jul 26, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for mitigating against failure of a particulate matter sensor of an automobile vehicle includes: determining if a key-off event is present, identifying an engine is off in a vehicle after-run mode; defining when local environmental conditions are outside of mechanical limits of a particulate matter (PM) sensor; identifying input values to reverse the local environmental conditions of the PM sensor; and controlling operation of a heating element of the PM sensor to achieve the input values to reverse the local environmental conditions during the vehicle after-run mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.