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1. 发明授权

US4909223A Air-fuel ratio control apparatus for multicylinder engine 失效
标题翻译：用于多缸发动机的空燃比控制装置
公开(公告)号：US4909223A
公开(公告)日：1990-03-20
申请号：US240626
申请日：1988-09-06
申请人： Takauki Ituzi , Sadayasu Ueno , Norio Ichikawa
发明人： Takauki Ituzi , Sadayasu Ueno , Norio Ichikawa
IPC分类号： F02B1/04 , F02D41/00 , F02D41/14 , F02D41/36
CPC分类号： F02D41/1486 , F02D41/0087 , F02B1/04
摘要： In an apparatus of the type in which the air-fuel ratio of an engine is detected by an air-fuel ratio sensor and the air-fuel ratio is feedback-controlled in accordance with the detection result to operate the engine at a desired air-fuel ratio, a change of the output characteristic of the air-fuel ratio sensor is always corrected for. The apparatus includes means for detecting the air-fuel ratio of the engine from its exhaust gas composition, means for determining whether the engine is in a given constant operating condition, means for determining a desired air-fuel ratio for the constant operating condition, means for supplying the quantity of fuel corresponding to the desired air-fuel ratio to each cylinder of the engine, means for causing some of all the cylinders of the engine not greater in number than N-1 (N represents the total number of cylinders) to misfire when the engine comes into the constant operating condition, and means for correcting the output characteristic of the air-fuel ratio detecting means in accordance with the amount of change of the output of the air-fuel ratio detecting means before and after the misfiring.
摘要翻译：在通过空燃比传感器检测发动机的空燃比并且根据检测结果反馈控制空燃比的类型的装置中，以期望的空气 - 燃料比传感器来操作发动机，燃料比，总是校正空燃比传感器的输出特性的变化。该装置包括用于从其排气组成检测发动机的空燃比的装置，用于确定发动机是否处于给定恒定运行状态的装置，用于确定恒定运行状态的期望空燃比的装置用于将对应于所需空燃比的燃料量提供给发动机的每个气缸，用于使发动机的所有气缸的一部分数量不大于N-1（N表示总气缸数）的装置，在发动机处于恒定运行状态时失火，以及根据空燃比检测装置的输出在发生故障之前和之后的变化量来校正空燃比检测装置的输出特性的装置。

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