Heat exchanger method and apparatus for engine exhaust gas recirculation system
US8615983B2 · kind B2 · utility
4Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2010 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jan 26, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for operating an internal combustion engine configured to operate lean of stoichiometry includes reducing temperature of a portion of an exhaust gas feedstream recirculated to an intake system of the engine, and reducing mass flowrate of particulate matter and hydrocarbons borne in the recirculated portion of the exhaust gas feedstream upstream of the heat exchanger effective to reduce deposition of particulate matter and hydrocarbons onto and adhesion to surface areas of the heat exchanger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.