Exhaust gas recirculation system and method
US10508621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2017 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Jul 27, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/28
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Various methods and systems are provided for an exhaust gas recirculation system. In one example, an exhaust gas recirculation cooler includes a first section, arranged proximate to an exhaust gas inlet of the EGR cooler and including a first plurality of tubes and a first plurality of fins coupled to the first plurality of tubes, where at least one of the first plurality of tubes and the first plurality of fins are comprised of a first material that has a first coefficient of thermal expansion (CTE); and a second section, arranged downstream of the first section and including a second plurality of tubes and a second plurality of fins coupled to the second plurality of tubes, where the second plurality of tubes and the second plurality of fins are comprised of a second material that has a second CTE, the second CTE greater than the first CTE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.