Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1976-04-08
1978-05-16
Cox, Ronald B.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
60276, 60285, 123 32EC, F02M 700, F02B 300
Patent
active
040893103
ABSTRACT:
In an internal combustion engine having a plurality of sequentially operative combustion chambers, harmful components in exhaust gases are reduced. At least one of the combustion chambers is supplied with a rich mixture having a smaller air-to-fuel ratio than the stoichiometric air-to-fuel ratio and the remaining combustion chambers are fed with a lean mixture whose air-to-fuel ratio is greater than the stoichiometric air-to-fuel ratio. At the point where the exhaust gases emitted from the combustion chambers gather, the total air-to-fuel ratio of the rich and lean mixtures is detected producing a signal representing the total air-to-fuel ratio. One of the rich and lean mixtures is controlled in accordance with the air/fuel ratio signal to maintain the total air-to-fuel ratio practically at a predetermined value.
REFERENCES:
patent: 3827237 (1974-08-01), Linder
patent: 3910240 (1975-10-01), Omori et al.
patent: 3982393 (1976-09-01), Masaki
patent: 4000614 (1977-01-01), Abthoff
patent: 4051816 (1977-10-01), Masaki
Noguchi Masaaki
Sumiyoshi Masaharu
Tanaka Taro
Tanaka Yukiyasu
Cox Ronald B.
Nippon Soken Inc.
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