Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-09-19
1979-10-02
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123124R, 123124B, F02B 3300
Patent
active
041694414
ABSTRACT:
An arrangement for controlling an air-fuel ratio of an air-fuel mixture depending on changes in the operating condition of an internal combustion engine provided with a catalytic converter comprises a main fuel passage to supply a fuel forming part of a lean air-fuel mixture distributed into the engine, an enriching fuel supply passage which is opened by a valve actuated in response to an output of an operating condition-detecting means to enrich the lean air-fuel mixture to a level slightly leaner than a stoichiometric air-fuel ratio, and an additional fuel supply passage having an additional fuel supply nozzle capable of supplying a predetermined amount of an additional fuel into the engine to minutely correct the air-fuel ratio of the slightly leaner air-fuel mixture to the stoichiometric air-fuel mixture level.
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SAE Paper 750371, pp. 145-154, Spilski and Creps.
Hirano Tadayoshi
Kawagoe Michio
Myhre Charles J.
Nelli R. A.
Toyota Jidosha Kogyo Kabushiki Kaisha
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