Exhaust gas recirculation system

Details Exhaust gas recirculation system Exhaust gas recirculation system

1977-06-08

1979-03-20

Croyle, Carlton R.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

041448561

ABSTRACT:
An exhaust gas recirculation system comprising an exhaust gas recirculation passage means between an exhaust gas passage and an intake passage, first and second flow control valves provided in the recirculation passage means in parallel relationship with each other for regulating flows of the exhaust gas in response to two kinds of vacuum having different characeristics, and a third flow control valve provided in the recirculation passage means in series with said first and second valves for regulating a flow of the gas in response to opening of a throttle valve of a carburetor, thereby obtaining the appropriate amount of exhaust gas recirculation in light and medium loaded driving ranges.

REFERENCES:
patent: 3954091 (1976-05-01), Stumpp
patent: 4024847 (1977-05-01), Koganemaru
patent: 4041913 (1977-08-01), Nohira
patent: 4061119 (1977-12-01), Takeshita

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