Exhaust gas recirculation control system for vehicle engines

Details Exhaust gas recirculation control system for vehicle engines Exhaust gas recirculation control system for vehicle engines

1982-07-08

1984-02-07

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123568, F02M 2506

Patent

active

044296762

ABSTRACT:
An internal combustion engine for a vehicle has an exhaust gas recirculation system for returning exhaust gases to the engine intake passage. The carburetion system for the engine includes a fuel enrichment valve. A control suction air line from the intake passage operates a regulating valve which controls the exhaust gas recirculation valve as well as the fuel enrichment valve. The flow resistance through the control suction air line is controlled by a prescribed control factor, which factor may depend upon the engine temperature alone or supplemented by engine speed, engine load (suction pressure), or atmospheric pressure.

REFERENCES:
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patent: 3680318 (1972-08-01), Nakajima et al.
patent: 3800766 (1974-04-01), Schubeck
patent: 4125099 (1978-11-01), Nouthuka
patent: 4168683 (1979-09-01), Hata et al.
patent: 4170972 (1979-10-01), Aoyama
patent: 4208995 (1980-06-01), Simko et al.
patent: 4257382 (1981-03-01), Matsui et al.
patent: 4300516 (1981-11-01), Hayakawa

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