Reducing no.sub.x emissions from an engine by temperature-controlled urea injection for selective catalytic reduction
US6063350A · kind A · utility
171Cited by
20References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 13, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Oct 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A safe, reliable SCR system for reducing NO.sub.x emissions from a lean-burn internal combustion engine utilizes urea in aqueous solution. A modular assembly is provided for mounting inside a urea reagent tank enables controlled feeding an aqueous urea solution to an injector. The assembly includes a reagent quality sensor, a reagent temperature sensor, a reagent level sensor and a pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.