Diesel oxidation catalyst (DOC) temperature sensor rationality diagnostic
US7546761B2 · kind B2 · utility
15Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2006 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | Feb 20, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A temperature sensor rationality control system for an exhaust treatment system having an oxidation catalyst includes an oxidation catalyst inlet temperature sensor that generates an inlet temperature signal and an oxidation catalyst outlet temperature sensor that generates an outlet temperature signal. A control module determines whether a difference based on the inlet temperature signal and the outlet temperature signal is below a difference threshold when an exhaust temperature is within a threshold range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.