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    APPARATUS FOR CONTROLLING AIR-FUEL RATIO OF INTERNAL-COMBUSTION ENGINE
    1.
    发明申请
    APPARATUS FOR CONTROLLING AIR-FUEL RATIO OF INTERNAL-COMBUSTION ENGINE 有权
    用于控制内燃机空燃比的装置

    公开(公告)号：US20130054112A1

    公开(公告)日：2013-02-28

    申请号：US13473593

    申请日：2012-05-17

    申请人： Seiji WATANABE ,  Tooru SEKIGUCHI ,  Hiroyuki ANDO ,  Atsuhiro MIYAUCHI ,  Takeshi AOKI ,  Michinori TANI ,  Soichiro GOTO

    发明人： Seiji WATANABE ,  Tooru SEKIGUCHI ,  Hiroyuki ANDO ,  Atsuhiro MIYAUCHI ,  Takeshi AOKI ,  Michinori TANI ,  Soichiro GOTO

    IPC分类号： F02D41/26

    CPC分类号： F02D41/1456 ,  F02D41/1495 ,  F02D2041/288

    摘要： An apparatus for controlling an air-fuel ratio of an internal-combustion engine includes an air-fuel ratio detector, a fluctuation signal generating device, an air-fuel ratio fluctuation device, a 0.5th-order frequency component strength calculator, a fluctuation frequency component strength calculator, a reference component strength calculator, and an imbalance fault determining device. The reference component strength calculator is configured to calculate strength of a reference component in accordance with strength of a first frequency component and strength of a second frequency component. The imbalance fault determining device is configured to make a determination of an imbalance fault in which air-fuel ratios of a plurality of cylinders vary beyond a tolerance limit on a basis of a relative relationship between strength of the 0.5th-order frequency component and the strength of the reference component.

    摘要翻译： 用于控制内燃机的空燃比的装置包括空燃比检测器，变动信号发生装置，空燃比变动装置，0.5次频率分量强度计算器，波动频率 分量强度计算器，参考分量强度计算器和不平衡故障确定装置。 参考分量强度计算器被配置为根据第一频率分量的强度和第二频率分量的强度来计算参考分量的强度。 不平衡故障确定装置被配置为基于0.5次频率分量的强度与第5级频率分量的相对关系来确定多个气缸的空燃比变化超过公差极限的不平衡故障 参考组件的强度。

    AIR-FUEL RATIO CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING AIR-FUEL RATIO
    2.
    发明申请
    AIR-FUEL RATIO CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING AIR-FUEL RATIO 有权
    用于内燃机的空燃比比控制装置及控制空燃比的方法

    公开(公告)号：US20130090834A1

    公开(公告)日：2013-04-11

    申请号：US13557221

    申请日：2012-07-25

    申请人： Atsuhiro MIYAUCHI ,  Tooru Sekiguchi ,  Michinori Tani ,  Seiji Watanabe

    发明人： Atsuhiro MIYAUCHI ,  Tooru Sekiguchi ,  Michinori Tani ,  Seiji Watanabe

    IPC分类号： F02D41/26

    CPC分类号： F02D41/0085 ,  F02D41/1401 ,  F02D41/1456 ,  F02D41/1495 ,  F02D2041/288

    摘要： An air-fuel ratio control apparatus includes an air-fuel ratio detector, an oscillation signal generator, an air-fuel ratio oscillation device, a sum/difference frequency component intensity calculator, a decision parameter calculator, and an imbalance failure determination device. The sum/difference frequency component intensity calculator is configured to calculate, while the air-fuel ratio oscillation device is in operation, at least one of a component intensity of a difference frequency and a component intensity of a sum frequency. The decision parameter calculator is configured to calculate, according to at least one of the component intensity of the difference frequency and the component intensity of the sum frequency, a decision parameter to determine a degree of imbalance of an air-fuel ratio. The imbalance failure determination device is configured to determine an imbalance failure in which the degree of imbalance of the air-fuel ratio exceeds an allowable limit using the decision parameter.

    摘要翻译： 空燃比控制装置包括空燃比检测器，振荡信号发生器，空燃比振荡装置，和/差频分量强度计算器，判定参数计算器和不平衡失效判定装置。 总和/差分分量强度计算器构成为在空燃比振荡装置工作时计算差频的分量强度和和频分量强度中的至少一个。 决策参数计算器被配置为根据差频的分量强度和和频的分量强度中的至少一个来计算用于确定空燃比的不平衡程度的判定参数。 不平衡失效判定装置被构造成使用判定参数来确定空燃比的不平衡度超过允许极限的不平衡故障。