Reductant injection control system
US8635854B2 · kind B2 · utility
6Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2011 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Apr 13, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A control system for reducing nitrogen oxides in an engine exhaust of an engine includes an emissions catalyst having an inlet adapted to receive an exhaust from the engine. A reductant tank stores a reductant. An injector is in fluid communication with the reductant tank and is operable to inject the reductant into the exhaust upstream of the catalyst. A reductant pump pumps the reductant from the reductant tank to the injector. A controller determines a target pressure of the reductant based on an engine operating condition and operates the reductant pump based on the target pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.