Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-12-23
1980-01-15
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123 32EE, F02B 300
Patent
active
041833350
ABSTRACT:
In a fuel mixture control system including an exhaust gas sensor located within an exhaust system of an internal combustion engine, maximum and minimum peak values of the gas sensor output are detected. A direct-current pedestal is added to the detected minimum peak value. A comparator detects when the added minimum peak exceeds the detected maximum peak value to provide a disabling signal to the mixture control system to switch its operational mode from closed loop control to open loop control when the temperature of the gas sensor falls below its operating temperature typically during prolonged idle condition.
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Asano Masaharu
Hosaka Akio
Myhre Charles J.
Nell R. A.
Nissan Motor Company Limited
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