Intake control apparatus

Details Intake control apparatus Intake control apparatus

1977-06-07

1979-10-23

Croyle, Carlton R.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123124R, F02M 2506

Patent

active

041716884

ABSTRACT:
An improved intake control apparatus for internal combustion engines which can reduce the amount of nitrogen oxide in the exhaust gas by additionally feeding a part of the exhaust gas as well as air or lean mixture gas into an intake system in correlation with the operating condition of the engine. The improved apparatus is characterized by the provision of an exhaust gas recirculation path communicating the exhaust path with the intake path for recirculating a part of the exhaust gas, at least two exhaust gas recirculation rate control valves in said exhaust gas recirculation path in series with each other, a diluting intake path disposed in the exhaust gas recirculation path between two particular control valves among the plurality of control valves for taking in atmospheric air or lean mixture gas, and an intake control valve in the diluting intake path.

REFERENCES:
patent: 1766673 (1930-06-01), Moore
patent: 3802402 (1974-04-01), Swatman
patent: 3805752 (1974-04-01), Cataldo
patent: 3955364 (1976-05-01), Lewis
patent: 4005692 (1977-02-01), Nohira et al.
patent: 4047509 (1977-09-01), Arnaud
patent: 4048968 (1977-09-01), Aoyama
patent: 4088101 (1978-05-01), Wakita

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