Exhaust aftertreatment system for an internal combustion engine and method for operating same
US9243537B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2014 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Sep 17, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust aftertreatment system for an engine includes an exhaust valve assembly having a first port, a second port, and a third port, the exhaust valve assembly being configured to effect selective fluid communication between the first port, the second port, and the third port; an exhaust conduit fluidly coupled to an exhaust port of the engine and fluidly coupled to the first port of the exhaust valve assembly; an exhaust aftertreatment device fluidly coupled to the second port of the exhaust valve assembly; a bypass conduit fluidly coupled to the third port of the exhaust valve assembly, the bypass conduit configured to bypass a flow of exhaust around the exhaust aftertreatment device; a reductant supply in selective fluid communication with the exhaust conduit; and a controller operatively coupled to the exhaust valve assembly and the reductant supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.