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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP15803187ApriorityCriticalpatent/JPS643247A/en
Publication of JPS643247ApublicationCriticalpatent/JPS643247A/en
Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine
(AREA)
Abstract
PURPOSE:To eliminate a difference in air-fuel ratio by setting a reference value at the time of feedback-controlling fuel according to output of an exhaust gas sensor at the time of controlling on rich side during high load. CONSTITUTION:The intake air quantity is computed from signals from an air flow sensor 11 and a crank angle sensor 17, and the fuel injection quantity of an injector 14 is computed from a signal of an exhaust gas sensor 19 to control air/fuel ratio to a target air/fuel ratio. During high load, open-loop control is made on rich side, and a reference value is set according to output of the exhaust gas sensor 19 at that time. According to the reference value, feedback control is made. Thus, the reference value becomes stable, so that air/fuel ratio can be properly controlled.
JP15803187A1987-06-251987-06-25Fuel control device for internal combustion engine
PendingJPS643247A
(en)