Exhaust gas recirculation apparatus for an internal combustion e

Details Exhaust gas recirculation apparatus for an internal combustion e Exhaust gas recirculation apparatus for an internal combustion e

1978-11-08

1980-09-16

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

F02M 2506

Patent

active

042223555

ABSTRACT:
Disclosed herein is an internal combustion engine provided with an exhaust gas recirculation system of so-called back pressure control type. The exhaust gas recirculation system is provided with a vacuum line connecting a so-called EGR port with a vacuum operated flow control valve, and a modulator valve having a control chamber selectively opened to the vacuum line in response to the pressure of recirculated exhaust gas for controlling vacuum signal level of the flow control valve. The control chamber of the modulator is connected to another vacuum signal port located slightly above the EGR port.

REFERENCES:
patent: 4041917 (1977-08-01), Suzuki
patent: 4092960 (1978-06-01), Nohira et al.
patent: 4128090 (1978-12-01), Aoyama
patent: 4137874 (1979-02-01), Otsubo et al.
patent: 4149503 (1979-04-01), Ozaki et al.
patent: 4150649 (1979-04-01), Gropp

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