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    • 4. 发明公开
    • Fuel control system for air-fuel mixture supply devices
    • 用于空气燃料混合供应装置的燃料控制系统
    • EP0207796A3
    • 1988-08-10
    • EP86305173
    • 1986-07-03
    • MIKUNI KOGYO KABUSHIKI KAISHA
    • Muraji, Tetsuo
    • F02M07/12F02M17/08F02M19/10
    • F02M17/08F02M3/09F02M7/17F02M7/20F02M7/24F02M19/10
    • In order to insure that, even when there arises a change in the rate of air flowing through an intake mixture passageway, the air-fuel ratio of the mixture which is to be supplied to an engine is always kept constant, the fuel control system comprises: an intake mixture passageway having a first negative pressure generating section and a second negative pressure generating section provided upstream of the first negative pressure generating section for generating a negative pressure weaker than that in the first negative pressure generating section; a fuel passageway having its one end opening in the first negative pressure generating section and its other end connected to a float chamber via fuel metering jet; an electromagnetic valve for controlling the rate of the fuel flowing through the fuel passageway; a negative pressure passageway having its one end opening in the second negative pressure generating section and having its other end connected to the fuel passageway at a site located between the fuel metering jet and the electromagnetic valve; and a level detecting means for detecting whether or not the fuel column formed within the negative pressure passageway is at a preset level and capable of generating an electric signal to control the operation of the electromagnetic valve. The first and second negative pressure generating sections are each constructed by a fixed and/or a variable venturi.
    • 为了确保即使出现通过进气混合通道的空气流速发生变化的情况,也将始终保持供给发动机的混合物的空燃比恒定,燃料控制系统 :具有第一负压产生部分和第二负压产生部分的进气混合通道,设置在第一负压产生部分的上游,用于产生比第一负压产生部分中的负压更弱的负压; 燃料通道,其一端开口在第一负压产生部分中,另一端经由燃料计量喷嘴连接到浮子室; 用于控制流过燃料通道的燃料的速率的电磁阀; 负压通道,其一端开口在第二负压产生部分中,并且其另一端在位于燃料计量射流和电磁阀之间的位置处连接到燃料通道; 以及电平检测装置,用于检测在负压通道内形成的燃料柱是否处于预设水平并且能够产生电信号以控制电磁阀的操作。 第一和第二负压产生部分均由固定和/或可变文丘里管构成。
    • 5. 发明公开
    • Fuel control system for air-fuel mixture supply devices
    • BrennstoffregelsystemfürLuft-Brennstoff-Gemischzufuhranordnungen。
    • EP0207796A2
    • 1987-01-07
    • EP86305173.6
    • 1986-07-03
    • MIKUNI KOGYO KABUSHIKI KAISHA
    • Muraji, Tetsuo
    • F02M7/12F02M17/08F02M19/10
    • F02M17/08F02M3/09F02M7/17F02M7/20F02M7/24F02M19/10
    • In order to insure that, even when there arises a change in the rate of air flowing through an intake mixture passageway, the air-fuel ratio of the mixture which is to be supplied to an engine is always kept constant, the fuel control system comprises: an intake mixture passageway having a first negative pressure generating section and a second negative pressure generating section provided upstream of the first negative pressure generating section for generating a negative pressure weaker than that in the first negative pressure generating section; a fuel passageway having its one end opening in the first negative pressure generating section and its other end connected to a float chamber via fuel metering jet; an electromagnetic valve for controlling the rate of the fuel flowing through the fuel passageway; a negative pressure passageway having its one end opening in the second negative pressure generating section and having its other end connected to the fuel passageway at a site located between the fuel metering jet and the electromagnetic valve; and a level detecting means for detecting whether or not the fuel column formed within the negative pressure passageway is at a preset level and capable of generating an electric signal to control the operation of the electromagnetic valve. The first and second negative pressure generating sections are each constructed by a fixed and/or a variable venturi.
    • 为了确保即使出现通过进气混合通道的空气流速发生变化的情况,也将始终保持供给发动机的混合物的空燃比恒定,燃料控制系统 :具有第一负压产生部分和第二负压产生部分的进气混合通道,设置在第一负压产生部分的上游,用于产生比第一负压产生部分中的负压更弱的负压; 燃料通道,其一端开口在第一负压产生部分中,另一端经由燃料计量喷嘴连接到浮子室; 用于控制流过燃料通道的燃料的速率的电磁阀; 负压通道,其一端开口在第二负压产生部分中,并且其另一端在位于燃料计量射流和电磁阀之间的位置处连接到燃料通道; 以及电平检测装置,用于检测在负压通道内形成的燃料柱是否处于预设水平并且能够产生电信号以控制电磁阀的操作。 第一和第二负压产生部分均由固定和/或可变文丘里管构成。