Exhaust gas recirculation system with an auxiliary valve

Details Exhaust gas recirculation system with an auxiliary valve Exhaust gas recirculation system with an auxiliary valve

1979-05-16

1980-09-30

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

F02M 2506

Patent

active

042249120

ABSTRACT:
In an internal combustion engine which incorporates an exhaust gas recirculation system which has an exhaust gas recirculation flow control valve provided at a middle position of the exhaust gas recirculation passage, the control valve being operated depending upon comparison between target and actual values of a control parameter with regard to the amount of exhaust gas recirculation, an auxiliary valve is provided in the exhaust gas recirculation passage in series with the exhaust gas recirculation flow control valve so as to control the cross-sectional area of the exhaust gas recirculation passage in accordance with the opening amount of the throttle valve provided in the intake passage of the engine.

REFERENCES:
patent: 3621825 (1971-11-01), Ojala
patent: 3675633 (1972-07-01), Nakajima et al.
patent: 3882837 (1975-05-01), Horie et al.
patent: 3934564 (1976-01-01), Barnert
patent: 4071003 (1978-01-01), Aono
patent: 4147143 (1979-04-01), Harada
patent: 4170973 (1979-10-01), Nohira et al.
patent: 4174027 (1979-11-01), Nakazumi

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