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

1979-01-29

1980-09-30

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

F02M 2506

Patent

active

042249090

ABSTRACT:
In an exhaust gas recirculation system for an internal combustion engine of the back pressure control type which provides, by a vacuum-operated control valve, a pressure chamber of substantially constant and nearly atmospheric pressure at a middle portion of an exhaust gas recirculation passage, a thermostatic control means is incorporated in a vacuum passage which supplies control vacuum to the vacuum-operated control valve so as to modify the vacuum conducted therethrough in accordance with the temperature of the engine so that a partial ratio of exhaust gas recirculation is effected in cold operation of the engine.

REFERENCES:
patent: 4092960 (1978-06-01), Nohira et al.
patent: 4109624 (1978-08-01), Washio et al.
patent: 4128089 (1978-12-01), Takimoto et al.
patent: 4137874 (1979-02-01), Otsubo et al.
patent: 4142491 (1979-03-01), Hibino et al.
patent: 4142496 (1979-03-01), Saito et al.
patent: 4151819 (1979-05-01), Inada et al.
patent: 4164918 (1979-08-01), Haka
patent: 4173955 (1979-11-01), Yamada et al.

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