Exhaust gas recirculation system for a combustion engine
US7077114B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 22, 2005 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Apr 22, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2255/14
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust gas recirculation system for a combustion engine is proposed that includes all important functions within a housing. For this purpose an exhaust gas recirculation valve, an exhaust gas cooling device with a heat exchanger unit, as well as a bypass channel with a bypass flap likewise embodied in the housing, form a unit. In addition, the exhaust gas recirculation valve in the area of its valve seat is cooled by the coolant of the exhaust gas cooling device. Thus a solution is proposed that, in comparison with known exhaust gas recirculation systems, greatly reduces construction space and weight, at the same time features low-cost assembly, and is also to be implemented very cost-effectively by the possibility of producing all housing parts in the die-casting method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.