Exhaust gas recirculation system for internal combustion engines

Details Exhaust gas recirculation system for internal combustion engines Exhaust gas recirculation system for internal combustion engines

1980-08-05

1982-05-04

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02M 2506

Patent

active

043277004

ABSTRACT:
An exhaust gas recirculation system for an internal combustion engine employs a vacuum actuator for a control valve in the exhaust gas recirculation passageway. A suction conduit to the actuator contains a magnetic valve for venting the suction conduit to atmosphere. The operating means for the magnetic valve includes a vacuum switch responsive to suction pressure in the engine intake passage modified by atmosphere pressure compensation means. A second magnetic valve responsive to engine speed also vents the suction conduit to atmosphere.

REFERENCES:
patent: 3884200 (1975-05-01), Caldwell
patent: 4033308 (1977-07-01), Hayashi et al.
patent: 4050429 (1977-09-01), Yasuhiro et al.
patent: 4171691 (1979-10-01), Nohira et al.
patent: 4180033 (1979-12-01), Aoyama
patent: 4187811 (1980-02-01), Katoh et al.
patent: 4274385 (1981-06-01), Yuzawa et al.
patent: 4290404 (1981-09-01), Hata et al.

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