Exhaust gas recirculation system for an internal combustion engi

Details Exhaust gas recirculation system for an internal combustion engi Exhaust gas recirculation system for an internal combustion engi

1982-04-09

1984-05-01

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

F02M 2506

Patent

active

044454872

ABSTRACT:
In an internal combustion engine having an intake passage provided therein with a throttle valve for controlling intake flow of air or an air-fuel mixture passing therethrough toward engine cylinders and an exhaust passage, an exhaust gas recirculation system comprises first means for conducting a portion of the exhaust gases from the exhaust passage into the intake passage downstream of the throttle valve and second means provided in the intake passage downstream of the throttle valve for preventing the exhaust gases fed through said first means from flowing upstream toward the throttle valve. Accordingly, the response accuracy of the throttle valve is protected from being impaired due to deposition of exhaust gas contaminants thereon.

REFERENCES:
patent: 1673181 (1978-06-01), Burtnett
patent: 1843646 (1932-02-01), Moore
patent: 3294073 (1966-12-01), Bressan
patent: 4018198 (1977-04-01), Williams
patent: 4092959 (1978-06-01), Mayer et al.

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