Exhaust gas recirculation control system

Details Exhaust gas recirculation control system Exhaust gas recirculation control system

1981-04-16

1983-02-08

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123568, F02M 2506

Patent

active

043722776

ABSTRACT:
A control valve in an exhaust gas recirculation line for an engine is operated by vacuum pressure from a regulating valve. The regulating valve has a vacuum chamber positioned between two orifices mounted in a line leading to atmospheric air intake. An air valve located downstream from said regulating valve and orifices controls vacuum pressure from a control suction air line leading to the engine intake passage. The return rate of exhaust gas to the engine is proportional to the flow rate of suction air supplied to the engine, thereby providing a desired exhaust gas return ratio.

REFERENCES:
patent: 4033308 (1977-07-01), Hayashi et al.
patent: 4235207 (1980-11-01), Nishimura
patent: 4242998 (1981-01-01), Shioya et al.
patent: 4249504 (1981-02-01), Shioya et al.

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