Intrusive SCR efficency testing systems and methods for vehicles with low temperature exhaust gas
US8205440B2 · kind B2 · utility
2Cited by
1References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 27, 2009 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Sep 25, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust diagnostic system includes an exhaust gas temperature management module that selectively increases a temperature of a selective catalytic reduction (SCR) catalyst to a predetermined testing temperature range using an intrusive exhaust gas temperature management approach. An SCR efficiency testing module estimates an efficiency of the SCR catalyst while the temperature is within the predetermined temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.