Reductant spray and exhaust gas flow guide and deflector
US9976464B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2016 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Nov 18, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An after-treatment (AT) system for an exhaust gas flow from an internal combustion engine includes first and second AT devices positioned in the exhaust gas flow. The AT system also includes an exhaust passage for carrying the flow of exhaust gas from the first AT device to the second AT device. The AT system additionally includes an injector configured to generate a reductant spray into the exhaust passage and a sensor positioned proximate the injector for detecting a concentration of a pollutant in the exhaust gas flow downstream of the first AT device. The AT system furthermore includes a deflector arranged between the injector and the sensor and configured to guide the flow of exhaust gas to the sensor to thereby concentrate the flow of exhaust gas at the sensor and direct the reductant spray away from the sensor to thereby minimize detection of the reductant by the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.