SCR system and method for the purging thereof
US8393144B2 · kind B2 · utility
2Cited by
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2Claims
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Key dates
| Filing date | Sep 12, 2008 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Apr 26, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
SCR system for treating the exhaust gases of an internal combustion engine, this system comprising a line for feeding a urea solution into the exhaust gases and a pump capable both of feeding the urea solution into the exhaust gases and of purging at least one part of the line by sucking a gas therethrough by means of a suction device, this system also comprising a control unit capable of activating and/or deactivating the operation of the pump and that of the suction device in a sequential manner in the course of one and the same purge procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.