EGR system
US4106449A · kind A · utility
24Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1976 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | Nov 15, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B1/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An EGR (exhaust gas recycling) system for diminishing the harmful substances of the exhaust gas from an internal combustion engine by recycling a portion thereof into the gas in-take side, comprises forming the EGR valve body and other essential parts of aluminum alloy castings and coating the portions thereof exposed to the exhaust gas with PTFE (polytetrafluoroethylene, e.g., Teflon). This phenomenally improves the corrosion-resistance and some other functions thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.