Internal combustion engine with an exhaust gas recirculation system
US4180035A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Jun 23, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/56
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed is an internal combustion engine with an exhaust gas recirculation system. The engine is provided with an exhaust gas recirculation control valve device, a modulator valve device and a vacuum control valve device. The exhaust gas recirculation control valve device communicates an exhaust passage of the engine with an intake passage of the engine and is provided with a diaphragm chamber, partitioned by a diaphragm and communicating with a first port of a carburetor and a constant pressure chamber, partitioned by a valve body which is actuated by the diaphragm. The modulator valve device is provided with an upper diaphragm chamber, which is communicated with a second port disposed at a position nearer to a venturi portion of the carburetor than the first port and communicated with the vacuum control valve device. An orifice is disposed between a first communicating pipe, which communicates the first port with the diaphragm chamber of the exhaust gas recirculation control valve device, and another communicating pipe, which is communicated with a port disposed upstream of the first port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.