Increasing exhaust temperature for aftertreatment operation
US7854114B2 · kind B2 · utility
31Cited by
21References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2006 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Apr 12, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
One embodiment of the present invention includes an internal combustion engine system designed to increase exhaust temperature when operating with a low mechanical load—such as idle operation. This increased exhaust temperature is provided to operate aftertreatment equipment. Exhaust temperature is raised by operating a portion of the engine pistons in a brake mode to increase loading on a remainder of the pistons operating in a combustion mode to drive the engine. Fuel provided to pistons operating in the combustion mode is regulated to maintain speed of the engine within a desired idle speed range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.