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    • 9. 发明授权
    • Air-fuel ratio controller for internal combustion engine
    • 内燃机空燃比控制器
    • US4664086A
    • 1987-05-12
    • US837590
    • 1986-03-07
    • Yuji TakedaToshio SuematsuOsamu HaradaKatsushi Anzai
    • Yuji TakedaToshio SuematsuOsamu HaradaKatsushi Anzai
    • F02B1/04F02D41/00F02D41/14F02D45/00F02M51/00
    • F02D41/2454F02B1/04
    • An apparatus of controlling an air-fuel ratio for internal combustion engine, further comprising the steps of calculating a basic fuel injection duration based on an engine load and a rotational speed of the engine, obtaining a factor of air-fuel ratio feedback correction for allowing a fuel injection duration to perform a proportional-plus-integral action, based on an output of an oxygen sensor for detecting an residual oxygen concentration in an exhaust gas, calculating a mean value of said factor of air-fuel ratio feedback correction, varying a correction value by learning so that said mean value takes a value within a predetermined range centered at a predetermined value corresponding to a target air-fuel ratio, multiplying said mean value by said correction value, providing initial adjustment of load detection apparatus applied to said internal combustion engine for determining said basic fuel injection time duration in order to set said calculation result within said predetermined range, and obtaining the fuel injection duration based on said basic fuel injection duration, said factor of air-fuel ratio feedback correction and said correction value, thereby, to control the air-fuel ratio.
    • 一种控制内燃机的空燃比的装置,还包括以下步骤:基于发动机负荷和发动机的转速计算基本燃料喷射持续时间,获得允许的空燃比反馈校正因子 基于用于检测排气中的残余氧浓度的氧传感器的输出来执行比例加积分动作的燃料喷射持续时间,计算所述空燃比反馈校正因子的平均值, 校正值,使得所述平均值以与目标空燃比对应的预定值为中心的预定范围内的值相乘,将所述平均值乘以所述校正值,提供应用于所述内部的负载检测装置的初始调整 内燃机,用于确定所述基本燃料喷射持续时间,以便将所述计算结果设定在所述预定值内 d范围,并且基于所述基本燃料喷射持续时间,所述空燃比反馈校正因子和所述校正值来获得燃料喷射持续时间,从而控制所述空燃比。
    • 10. 发明授权
    • Method of discriminating octane number of fuel for motor vehicle
    • 识别汽车燃油辛烷值的方法
    • US4640251A
    • 1987-02-03
    • US775431
    • 1985-09-12
    • Osamu HaradaToshio SuematsuYuji TakedaKatsushi Anzai
    • Osamu HaradaToshio SuematsuYuji TakedaKatsushi Anzai
    • F02B1/04F02P5/152F02P5/153G01N33/28G01N33/22F02D43/00
    • F02P5/1527F02P5/1521G01N33/2817G01N33/2829F02B1/04Y02T10/46
    • A knocking in an engine is prevented from occurring by retarding an ignition timing. A basic ignition advance angle THB and a correction value THK for retardation of the ignition timing are computed in order that the ignition timing THF is calculated by using the following formula.THF=THB-THKThe knocking in the engine tends to take place, as the ignition timing advances. Determination is made as to whether the correction value THK is equal to a reference value or not and detection is made as to whether a rapid acceleration takes place. If the result of such determination is affirmative and no rapid acceleration is detected, discrimination is made as to whether an octane number of the fuel to be supplied to the engine is less than a predetermined octane number of the fuel which is optimum for the engine. When rapid acceleration is detected, the above-mentioned discrimination is not carried out so that the engine is controlled by the previous result of the discrimination of the fuel.
    • 通过延迟点火正时来防止发动机爆震。 计算基本点火提前角THB和用于延迟点火正时的校正值THK,以便通过使用以下公式计算点火正时THF。 THF = THB-THK随着点火时间的推移,发动机的爆震会发生。 确定校正值THK是否等于参考值,并且检测是否发生快速加速。 如果这种确定的结果是肯定的并且没有检测到快速加速度,则判断要供应给发动机的燃料的辛烷值是否小于对于发动机最佳的燃料的预定辛烷值。 当检测到快速加速时,不进行上述的判别,以致发动机由先前鉴别燃料的结果控制。