Internal-combustion engines – Charge forming device – Having fluidic logic control means
Patent
1984-02-03
1985-01-29
Cuchlinski, Jr., William A.
Internal-combustion engines
Charge forming device
Having fluidic logic control means
123587, 123589, F02M 2304
Patent
active
044959222
ABSTRACT:
An air/fuel ratio control system for an internal combustion engine having an air induction system equipped with a secondary air passage communicated with an air intake passage and an oxygen sensor disposed in an exhaust system of the engine, the flow of the secondary air through the secondary air passage being controlled in accordance with a feedback control signal based on an output signal of the oxygen sensor, comprises a temperature sensor for sensing the temperature of the intake air supplied to the engine, and a control means for preventing the supply of the secondary air when the intake air temperature detected by the temperature sensor is below a predetermined level. The start timing of the feedback air/fuel ratio control is thus determined in accordance with the intake air temperature, to alleviate the drawbacks of the conventional air/fuel ratio control system in which the start timing of the feedback control is determined in accordance with the engine coolant temperature.
REFERENCES:
patent: 4083341 (1978-04-01), Brettschneider et al.
patent: 4091783 (1978-05-01), Laprade et al.
patent: 4192140 (1980-03-01), Yamashita et al.
patent: 4335699 (1982-06-01), Totsune et al.
patent: 4436070 (1984-03-01), Akagi et al.
patent: 4449502 (1984-05-01), Furuhashi
Fujimura Akira
Ozaki Shunzaburo
Cuchlinski Jr. William A.
Honda Giken Kogyo Kabushiki Kaisha
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