Device for reducing pollutants in the exhaust gas flow of an internal combustion engine
US8915068B2 · kind B2 · utility
2Cited by
7References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2011 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Jul 16, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/85978
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A device (40) for reducing pollutants, in particular nitrogen oxides, in an exhaust gas flow of an internal combustion engine, includes a reducing agent (46), in particular a urea-water solution, which is stored in a storage tank (42), a metering module, in particular a nozzle (68), for injecting the reducing agent (46) into the exhaust gas flow, and a pump (56, 100) for delivering the reducing agent (46) from a suction point (62) in the storage tank (42) to the metering module via lines (58, 66). A pump (56, 100) lies beneath a reducing agent level (44) in the storage tank (42), and a non-return valve is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.