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    • 22. 发明申请
    • Thermal type gas flow measuring instrument
    • 热式气体流量计
    • US20050132795A1
    • 2005-06-23
    • US11012290
    • 2004-12-16
    • Chihiro KobayashiShinya Igarashi
    • Chihiro KobayashiShinya Igarashi
    • F02D41/18G01F1/696G01F1/698G01F1/68
    • G01F1/6983F02D41/187G01F1/6965
    • A thermal type gas flow measuring instrument measures gas flow with high precision by accurately correcting changes in radiation heat characteristics of a heating resistor due to contamination. The instrument comprises a second heating resistor 30 whose resistance value, which changes if contaminated, is calculated by measuring the terminal voltage thereof by calculating means 32, and the calculated value is compared with a temperature detected by a temperature detecting element 31. Based on the result of comparison, the level of contamination of the second heating resistor 30 is determined. The second heating resistor 30 and the first heating resistor 3 are disposed in similar environments such that their levels of contamination can be considered equal. Based on the level of contamination calculated from the result of comparison, a correction value is calculated and the output of the first heating resistor 3 is corrected in accordance with the correction value.
    • 热式气体流量测量仪器通过精确地校正由于污染导致的加热电阻器的辐射热特性的变化,高精度地测量气体流量。 仪器包括第二加热电阻器30,其通过计算装置32测量其端电压来计算其污染时的电阻值,并将该计算值与由温度检测元件31检测到的温度进行比较。基于 比较结果确定了第二加热电阻器30的污染程度。 第二加热电阻器30和第一加热电阻器3设置在类似的环境中,使得它们的污染程度可以被认为是相等的。 根据比较结果计算出的污染程度,计算校正值,根据校正值校正第一加热电阻体3的输出。
    • 23. 发明申请
    • Mass airflow measuring apparatus
    • 大气流量测仪
    • US20040035195A1
    • 2004-02-26
    • US10652029
    • 2003-09-02
    • Hitachi, Ltd.Hitachi Car Engineering Co., Ltd.
    • Shinya IgarashiAtsushi KankeRintarou MinamitaniKeiichi NakadaIzumi Watanabe
    • G01P005/00
    • G01F1/6983F02D41/042
    • To offer a mass airflow measuring apparatus in which the effect of the adhesion onto the heating resistor caused while the engine is off is reduced and the measuring accuracy is improved. The apparatus measures the mass airflow of the air sucked into the internal combustion engine, using the heating resistor 1. The power control circuit 4 maintains the heating resistor 1 temperature equal to or higher than the temperature during the operation of the internal combustion engine after the internal combustion engine has stopped and until the temperature of the internal combustion engine and its apparatuses installed in the suction system has lowered below the generation temperature of volatile gas such as oil vapor. The power control circuit 4, using the temperature sensing resistor 2 that detects the temperature of the air sucked into the combustion engine, detects the air temperature and maintains the heating resistor 1 temperature, based on the temperature measured, equal to or higher than the temperature during the operation of the internal combustion engine even after the internal combustion engine has stopped.
    • 提供一种质量气流测量装置,其中在发动机关闭时引起在加热电阻器上的附着力的影响减小,并且提高了测量精度。 该装置使用加热电阻器1测量吸入内燃机的空气的质量气流。功率控制电路4将发热电阻体1的温度保持在等于或高于内燃机运转后的温度 内燃机已经停止,并且直到安装在抽吸系统中的内燃机及其装置的温度降低到低于诸如油蒸气的挥发性气体的发生温度。 功率控制电路4使用检测吸入到内燃机中的空气的温度的温度检测电阻器2,根据测得的温度检测空气温度并维持加热电阻器1的温度等于或高于温度 即使在内燃机停止之后,内燃机的运转也是如此。
    • 24. 发明授权
    • Fuel control apparatus
    • 燃油控制装置
    • US4768489A
    • 1988-09-06
    • US31554
    • 1987-03-30
    • Setsuhiro Shimomura
    • Setsuhiro Shimomura
    • F02D41/22F02D41/18G01F1/68G01F1/698F02B3/00
    • G01F1/6983G01F1/68
    • A fuel control apparatus comprises a hot-wire type intake air quantity sensor disposed in an air intake passage for an internal combustion engine to detect the quantity of air passing therethrough, a fuel control valve placed in the air intake passage and injecting fuel, a burning-off section for heating a hot wire at a temperature higher than a temperature in a normal operation, after the engine has been stopped, so as to burn off a deposit on the hot wire, wherein the operation of an injector is stopped by detecting an output of the sensor for a predetermined time to thereby prevent undesired firing of the fuel.
    • 燃料控制装置包括设置在内燃机的进气通道中的热丝式进气量传感器,用于检测通过其中的空气量,设置在进气通道中并喷射燃料的燃料控制阀,燃烧 在发动机停止之后,在高于正常操作的温度的温度下加热热丝的断开部分,以消除热丝上的沉积物,其中通过检测喷嘴的操作来停止喷射器的操作 输出传感器预定时间,从而防止燃料的不期望的燃烧。
    • 27. 发明授权
    • Air flow rate meter apparatus
    • 空气流量计仪表
    • US4445368A
    • 1984-05-01
    • US392055
    • 1982-06-25
    • Jaihind S. Sumal
    • Jaihind S. Sumal
    • G01F1/68G01F1/684G01F1/698G01F15/00G01F5/00
    • G01F1/6842G01F1/6983
    • A air flow rate meter apparatus includes an air bypass line, which branches off from a filter housing on the air intake fitting of an internal combustion engine and discharges at a restriction of the air intake tube upstream of a throttle valve. An injection valve is disposed in the restricted section, ejecting fuel in the direction toward a throttle valve. The air bypass line extends vertically and has a first U-shaped section, the connecting portion of which is located at a lower level than its legs. A temperature-dependent resistor in the form of a hot wire or hot strip is disposed in the downstream leg of the first U-shaped section, so that during a burnoff procedure of the temperature-dependent resistor a flow is effected in the direction toward the mouth of the air bypass line, thus preventing the aspiration of a fuel-air mixture into the air bypass line and thus avoiding the danger of ignition with the possible destruction of the temperature-dependent resistor.
    • 空气流量计装置包括从内燃机的进气配件上的过滤器壳体分支的空气旁通管线,并且在节气门上游的进气管的限制下排出。 喷射阀设置在限制部分中,沿着节流阀的方向喷射燃料。 空气旁路管线垂直延伸并且具有第一U形部分,其连接部分位于比其腿部更低的水平处。 热电线或热带形式的温度依赖电阻器设置在第一U形部分的下游支脚中,使得在温度依赖电阻器的烧毁过程期间,沿着朝向 从而防止燃料 - 空气混合物进入空气旁路管线,从而避免因温度依赖性电阻器的可能破坏引起的点火危险。