Service test for exhaust gas treatment system
US8607625B2 · kind B2 · utility
3Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2012 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | May 29, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A service procedure to test the SCR device involves turning on an upstream and downstream SCR NOx sensor, turning off an NH3 injector, running the engine until enough upstream NOx mass has been generated by the engine to deplete any NH3 load remaining in the SCR device, determining the operational status of the NOx sensors as follows:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.