Exhaust gas recirculation system

Details Exhaust gas recirculation system Exhaust gas recirculation system

1980-09-08

1982-06-22

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

123571, 123585, 123587, 123588, F02M 2506

Patent

active

043356990

ABSTRACT:
Apparatus for controlling exhaust gas recirculation in an internal combustion engine employs a first control valve in an exhaust gas recirculation passageway, a second control valve in an air conduit connecting the intake passage to atmosphere through selective restriction means, and a regulating valve responsive to differential vacuum intensities for actuating the control valves. The restriction means comprise a plurality of individual restrictions one or more of which are selectively put into operation depending upon engine operating parameters such as coolant temperature and driving speed.

REFERENCES:
patent: 4050429 (1977-09-01), Yasuhiro et al.
patent: 4106464 (1978-08-01), Yamashita et al.
patent: 4171688 (1979-10-01), Takahashi
patent: 4180033 (1979-12-01), Aoyama
patent: 4187811 (1980-02-01), Katoh et al.
patent: 4235207 (1980-11-01), Nishimura
patent: 4242998 (1981-01-01), Shioya et al.
patent: 4257382 (1981-03-01), Matsui et al.
patent: 4304210 (1981-12-01), Hayakawa

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