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    • 5. 发明授权
    • Failure diagnosis apparatus for throttle valve actuating device
    • 节气门致动装置故障诊断装置
    • US06789525B2
    • 2004-09-14
    • US10612249
    • 2003-07-01
    • Tetsuya IshiguroShusuke AkazakiMasahiro SatoEiji Hashimoto
    • Tetsuya IshiguroShusuke AkazakiMasahiro SatoEiji Hashimoto
    • F00D100
    • F02D41/221F02D11/107F02D2200/0404Y02T10/40
    • A failure diagnosis apparatus for a throttle valve actuating device is disclosed. The throttle valve actuating device has an actuator for actuating a throttle valve provided in an intake system of an internal combustion engine and biasing elements for biasing the throttle valve to a predetermined retention opening. A feedback control of the throttle valve is performed so that an opening of the throttle valve coincides with a first predetermined opening. After the throttle valve is controlled to the first predetermined opening, a feedback control of the throttle valve is performed so that an opening of the throttle valve coincides with a second predetermined opening. It is determined that the throttle valve actuating device has failed when the time period during which the opening of the throttle valve remains in a predetermined determination range including the second predetermined opening, is shorter than a predetermined time period when performing the feedback control to the second predetermined opening.
    • 公开了一种用于节气门致动装置的故障诊断装置。 节流阀致动装置具有致动器,用于致动设置在内燃机的进气系统中的节流阀和用于将节气门偏压到预定保持开口的偏压元件。 执行节流阀的反馈控制,使得节流阀的开度与第一预定开度一致。 在节流阀被控制到第一预定开度之后,执行节流阀的反馈控制,使得节流阀的开度与第二预定开度一致。 当节气门开度保持在包括第二预定开度的预定确定范围的时间段时,确定节气门致动装置已经失败,当对第二预定开度执行反馈控制时,节气门致动装置的预定时间段短 预定开口。
    • 10. 发明授权
    • Adsorption amount sensor and coking sensor for internal combustion engine
    • 内燃机吸附量传感器和焦化传感器
    • US06602471B1
    • 2003-08-05
    • US09568125
    • 2000-05-10
    • Masahiro SatoYoshihisa IwakiYuji YasuiTakashi HagaMasaki UenoTetsuo Endo
    • Masahiro SatoYoshihisa IwakiYuji YasuiTakashi HagaMasaki UenoTetsuo Endo
    • G01N3096
    • F01N3/0835F01N3/0814F01N13/009F01N2370/04F01N2560/028G01N27/043G01N27/221G01N33/0047Y10T436/21
    • There are provided an adsorption amount sensor which is capable of accurately detecting an amount of hydrocarbons or water adsorbed by a zeolite of a hydrocarbon adsorber, even during operation of an engine, as well as a coking sensor which is capable of accurately detecting an amount of coke deposition on inner surfaces of a pipe of an internal combustion engine, even during operation of an engine. The adsorption amount sensor has a plurality of electrodes arranged in the vicinity of the hydrocarbon adsorber in a manner opposed to each other and each carrying a zeolite thereon. The amount of hydrocarbons adsorbed is detected by using a parameter indicative of changes in at least one of a resistance value between the electrodes and an electrical capacitance between the electrodes. The coking sensor has a plurality of electrodes arranged within the pipe of the engine in a manner opposed to each other and each having a surface thereof coated with an insulating material. The amount of coke deposition is detected by using a parameter indicative of changes in at least one of a resistance value between the electrodes and an electrical capacitance between the electrodes.
    • 提供了一种吸附量传感器,其能够精确地检测碳氢化合物吸附器的沸石或发动机的操作期间吸附的烃的量,以及焦化传感器,该焦化传感器能够精确地检测 即使在发动机的运转期间,内燃机的管的内表面上的焦炭沉积。 吸附量传感器具有以彼此相对的方式布置在烃吸附器附近的多个电极,并且各自在其上承载沸石。 通过使用指示电极之间的电阻值和电极之间的电容中的至少一个的变化的参数来检测吸附的烃的量。 焦化传感器具有以彼此相对的方式布置在发动机的管内的多个电极,并且每个电极的表面涂覆有绝缘材料。 通过使用指示电极之间的电阻值和电极之间的电容中的至少一个的变化的参数来检测焦炭沉积量。