Fixed rate EGR system
US8904787B2 · kind B2 · utility
14Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2011 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | May 6, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method is provided for controlling EGR flow in turbocharged engine. The method comprises operating a low-pressure exhaust gas recirculation (LP-EGR) system at a fixed EGR percentage rate of fresh airflow from mid-load down to a minimum engine load, even as load changes. In this way, errors in the delivered LP-EGR rate during transient conditions may be alleviated by providing a fixed EGR percentage of fresh airflow at all engine loads within a fixed mode range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.