Exhaust treatment diagnostic using a temperature sensor
US7216478B2 · kind B2 · utility
16Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2005 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Jun 3, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of monitoring operation of a dosing system for treating exhaust of an engine includes monitoring a downstream temperature of an exhaust downstream of the dosing system and injecting a dosing agent. A control module determines a temperature differential threshold based on an amount of dosing agent injected and calculates a temperature differential. The control module further evaluates operation of the dosing system based on the temperature differential and the temperature differential threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.