Air-fuel ratio detection system for engine exhaust gas
    1.
    发明授权
    Air-fuel ratio detection system for engine exhaust gas 失效
    发动机废气空燃比检测系统

    公开(公告)号:US4882030A

    公开(公告)日:1989-11-21

    申请号:US239008

    申请日:1988-08-30

    CPC分类号: G01N27/4065

    摘要: An air-fuel detection system comprising a solid electrolyte, first and second electrodes formed on the surface of the solid electrolyte, a diffusion resistor formed on the first electrode for controlling the gas diffusion into the first electrode, and a detector circuit for detecting conditions of the engine exhaust gas to detect the air-fuel ratio thereof, wherein the detector circuit measures the electromotive force generated between the first and second electrodes during a first period, and controls a selected one of the voltage and current applied between the first and second electrodes to keep the electromotive force constant during a second period, the selected one of the voltage and current being produced as a signal representing the air-fuel ratio.

    摘要翻译: 一种空气燃料检测系统,包括固体电解质,形成在固体电解质表面上的第一和第二电极,形成在第一电极上的扩散电阻器,用于控制气体扩散到第一电极中;以及检测器电路, 发动机废气以检测其空燃比,其中所述检测器电路在第一时段期间测量在所述第一和第二电极之间产生的电动势,并且控制施加在所述第一和第二电极之间的电压和电流中的所选择的一个 为了在第二时段期间保持电动势恒定,所选择的一个电压和电流被产生为表示空燃比的信号。