Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-11-25
1979-11-20
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123119D, 123124B, 60276, 60285, 60290, F02M 700, F01N 310
Patent
active
041746902
ABSTRACT:
Disclosed is an air-fuel ratio controlling device of an internal combustion engine having on its exhaust system a three way catalytic converter. The O.sub.2 sensor is disposed in the exhaust system for providing a rich or a lean signal indicating that the total air-fuel ratio is on the rich side or on the lean side of the stoichiometric air-fuel ratio, respectively. A supplementary fuel feed control device having a nozzle flapper mechanism therein is provided for controlling the amount of the supplementary fuel fed into the intake system. This amount of the supplementary fuel is rapidly increased when the total air-fuel ratio is changed from the lean side to the rich side of the stoichiometric air-fuel ratio while the amount of the supplementary fuel is slowly reduced when the total air-fuel ratio is changed from the rich side to the lean side of the stoichiometric air-fuel ratio.
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S.A.E. Paper No. 750369, Feb. 1975, John Camp, Todd Rachel, "Closed-Loop Electronic Fuel and Air Control of Internal Combustion Engines".
S.A.E. Paper No. 770295, 1977, Grunde T. Engh, Stephen Wallman, "Development of the Volvo Lambda-Sond System".
Dolinar Andrew M.
Myhre Charles J.
Toyota Jidosha Kogyo Kabushiki Kaisha
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