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US4539958A Method of learn-controlling air-fuel ratio for internal combustion engine 失效
内燃机学习控制空燃比的方法

Method of learn-controlling air-fuel ratio for internal combustion engine
摘要:
In a method wherein a fuel injection time duration is allowed to perform a proportional-plus-integral action by the use of an air-fuel ratio feedback correction coefficient obtained from the output of an O.sub.2 sensor thereby to control an air-fuel ratio to a target air-fuel ratio, a correction value for allowing a mean value of the air-fuel ratio feedback correction coefficient to approach a predetermined value is varied every time the air-fuel ratio feedback correction coefficient skips a plurality of times, thereby to learn-control the air-fuel ratio of an air-fuel mixture to be a stoichiometric one.
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