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    • 72. 发明授权
    • Air flow metering apparatus for internal combustion engines
    • 用于内燃机的气流计量装置
    • US4142407A
    • 1979-03-06
    • US797690
    • 1977-05-17
    • Hiroshi KuroiwaYoshishige OhyamaYutaka NishimuraNobuaki Miyakawa
    • Hiroshi KuroiwaYoshishige OhyamaYutaka NishimuraNobuaki Miyakawa
    • F02D35/00F02D41/18G01F1/32G01F1/684G01F5/00G01F7/00
    • G01F7/00F02D41/185G01F1/3209G01F1/3272G01F1/6842G01F5/00Y02T10/146
    • An air flow metering apparatus for measuring a suction air flow fed to an internal combustion engine comprises at least two Karman' vortex type air flow meters disposed separately in at least two air suction passages, respectively. The output signals from the flow meters are switched in such manner that in a predetermined range of high air flow rates, the output signal from one of the flow meter is utilized for measuring or sensing the air flow rate, while in a predetermined low flow rate range, the output signal from the other flow meter is utilized for the same purpose. Alternatively, in a predetermined low flow rate range, only one of the air suction passages is employed, while both of the air suction passages are employed in a predetermined range of high air flow rates. The air flow metering apparatus assures the detection or measurement of the suction air flow rate over a whole operation range of the engine with a high reliability and enhanced accuracy.
    • 用于测量供给内燃机的吸入空气流的气流计量装置包括分别设置在至少两个空气吸入通道中的至少两个卡门涡流式空气流量计。 来自流量计的输出信号以这样的方式切换,使得在高空气流量的预定范围内,来自流量计中的一个的输出信号用于测量或感测空气流速,而在预定的低流量 范围内,来自另一个流量计的输出信号用于相同的目的。 或者,在预定的低流量范围内,仅使用一个空气吸入通道,而两个空气吸入通道都以高空气流量的预定范围使用。 空气流量计量装置确保在发动机的整个工作范围内以高可靠性和高精度检测或测量吸入空气流量。
    • 73. 发明授权
    • Air-fuel ratio control apparatus
    • 空燃比控制装置
    • US4132199A
    • 1979-01-02
    • US814623
    • 1977-07-11
    • Hiroshi KuroiwaYutaka NishimuraYoshishige OhyamaTorazo Nishimiya
    • Hiroshi KuroiwaYutaka NishimuraYoshishige OhyamaTorazo Nishimiya
    • F02B1/04F02D41/14F02M7/24F02B33/00
    • F02D41/1489F02M7/24F02B1/04Y10S261/74
    • An air-fuel ratio control apparatus for use in a motor vehicle having an internal combustion engine provided with a carburetor including a main fuel supply system and a low speed fuel supply system for supplying fuel to the engine. The apparatus includes an electromagnetic valve for controlling the volume of air flowing through the air bleed of the main fuel supply system, an electromagnetic valve for controlling the volume of air flowing through the air bleed of the low speed fuel supply system, an O.sub.2 sensor for detecting the concentration of O.sub.2 in exhaust emissions, and a control circuit for producing as an output a control signal in accordance with a signal from the O.sub.2 sensor. The two electromagnetic valves are controlled by the same signal from the control circuit. A plurality of microswitches for detecting the starting of the engine, high speed operation of the engine and power operation of the engine respectively are provides so as to disconnect the control circuit from the electromagnetic valves.
    • 一种用于具有内燃机的机动车辆的空燃比控制装置,所述内燃机设置有包括主燃料供给系统和用于向发动机供给燃料的低速燃料供给系统的化油器。 该装置包括用于控制流过主燃料供应系统的排气的空气的体积的电磁阀,用于控制流过低速燃料供应系统的排气的空气的体积的电磁阀,用于 检测废气排放物中的O 2浓度;以及控制电路,用于根据来自O2传感器的信号输出控制信号。 两个电磁阀由来自控制电路的相同信号控制。 提供用于检测发动机起动,发动机的高速运转和发动机的动力运行的多个微型开关,以分离控制电路与电磁阀。