Exhaust gas recirculation means

Details Exhaust gas recirculation means Exhaust gas recirculation means

1977-06-20

1979-08-14

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

041642082

ABSTRACT:
An exhaust gas recirculation device in which exhaust gas from the engine of a vehicle, for example, may be recirculated via two separate lines to portions of a carburetor which are upstream and downstream of a throttle valve, to permit a suitably large amount of exhaust gas to be recirculated when necessary and which includes control means which stops the flow of gas in both lines when the engine is being warmed up, and stops the flow of gas in the upstream recirculation line only when engine load, engine speed, or vehicle speed is high, or when there is a risk of icing in the carburetor, whereby the disadvantages of recirculated exhaust gas during particular engine operating conditions are avoided.

REFERENCES:
patent: 3872845 (1975-03-01), Schultz
patent: 4041913 (1977-08-01), Nohira
patent: 4047509 (1977-09-01), Arnund

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