Internal combustion engine with an exhaust gas recirculation sys

Details Internal combustion engine with an exhaust gas recirculation sys Internal combustion engine with an exhaust gas recirculation sys

1978-06-23

1979-12-25

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

041800354

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.

REFERENCES:
patent: 4041917 (1977-08-01), Suzuki
patent: 4056084 (1977-11-01), Baumgartner
patent: 4069797 (1978-01-01), Nohira et al.
patent: 4090482 (1978-05-01), Yoshida
patent: 4092960 (1978-06-01), Nohira et al.
patent: 4124004 (1978-11-01), Aoyama
patent: 4128090 (1978-12-01), Aoyama
patent: 4130093 (1978-12-01), Aoyama

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