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    • 12. 发明授权
    • Apparatus for measuring air quantity
    • 空气量测量装置
    • US4688424A
    • 1987-08-25
    • US804153
    • 1985-12-03
    • Dieter HandtmannUlrich Kuhn
    • Dieter HandtmannUlrich Kuhn
    • G01F1/68G01F1/684G01F1/692G01F1/698G01F1/699
    • G01F1/699G01F1/684G01F1/692G01F1/698
    • An apparatus for measuring the rate of flow of a fluid such as for measuring the quantities of intake air of internal combustion engines. The apparatus includes a first conductive film and a second conductive film applied to a substrate and which are in thermal contact with one another and are introduced into the flowing medium. The apparatus includes a resistance-measuring arrangement connected to a control function to form a closed loop. The resistance value of the first film is sensed by the resistance-measuring arrangement and, by applying energy, the control function regulates the first film to a temperature dependent on at least the quantity of air flowing past. This apparatus further provides that the output quantity of the control function is applied to the second conductive film, that both conductive films have at least approximately the same sheet resistance, and that their geometry is adapted to each other so that the second film is controlled to at least approximately the temperature of the first film.
    • 一种用于测量流体的流量的装置,例如用于测量内燃机的进气量。 该装置包括第一导电膜和第二导电膜,该第一导电膜和第二导电膜被施加到基底并彼此热接触并被引入到流动介质中。 该装置包括连接到控制功能以形成闭环的电阻测量装置。 通过电阻测量装置感测第一膜的电阻值,并且通过施加能量,控制功能将第一膜调节至至少取决于流过的空气量的温度。 该装置还提供了将控制功能的输出量施加到第二导电膜,两个导电膜具有至少大致相同的薄层电阻,并且它们的几何形状彼此适配,使得第二薄膜被控制到 至少大约第一膜的温度。
    • 15. 发明授权
    • Device for measuring the mass of a flowing medium
    • 用于测量流动介质质量的装置
    • US5546794A
    • 1996-08-20
    • US339198
    • 1994-11-10
    • Ulrich KuhnDieter TankUwe Konzelmann
    • Ulrich KuhnDieter TankUwe Konzelmann
    • G01F1/68F02D41/18G01F1/684G01F15/00G01M19/00
    • G01F1/6842G01F15/00
    • A devices for measuring the mass of a flowing medium, having a temperature-sensitive measuring element, in which accurate medium flow measurement can be made in the presence of a pulsating flow which is characterized by flow fluctuations. In order to provide accurate measurements, the device has a structure which is installed in the measuring conduit in a region of its inside wall upstream and downstream of the measuring element. The structure has friction faces exposed to the oncoming flow in which the friction faces effect a flow resistance which can be varied by the intensity of the flow fluctuations, only in the presence of a pulsating flow, so that the flow is positively displaced more or less into the region of the measuring element, in order to increase the flow velocity and to compensate for the measurement errors. The invention is for measuring the mass of a flowing medium in the intake of an internal combustion engine.
    • 用于测量具有温度敏感测量元件的流动介质的质量的装置,其中可以在存在以流动波动为特征的脉动流的情况下进行精确的介质流量测量。 为了提供准确的测量,该装置具有安装在测量导管中的测量元件上游和下游的内壁区域中的结构。 该结构具有暴露于迎面而来的流动的摩擦面,其中摩擦面会影响流动阻力,流动阻力可以通过流动波动的强度而变化,只有在有脉动流的情况下,才能使流动或多或少地偏移 进入测量元件的区域,以便增加流速并补偿测量误差。 本发明用于测量内燃机进气口中流动介质的质量。
    • 17. 发明授权
    • Apparatus for determining the flow rate of a flowing medium
    • 用于确定流动介质的流量的装置
    • US4777820A
    • 1988-10-18
    • US107446
    • 1987-10-13
    • Hans HechtWolfgang KienzleJosef KleinhansUlrich KuhnBerthold Wocher
    • Hans HechtWolfgang KienzleJosef KleinhansUlrich KuhnBerthold Wocher
    • G01P5/12G01F1/48G01F1/68G01F1/692G01F1/698
    • G01F1/692G01F1/698
    • An apparatus for determining the flow rate of a flowing medium having a substrate as a carrier and a resistor arrangement disposed on the substrate which among other elements includes a layer-like measuring resistor (R.sub.H) as well as a likewise layer-like heating resistor (R.sub.S), the heating output of which is regulated such that the measuring resistor (R.sub.H) has a constant temperature, the heating output of the heating resistor (R.sub.S) being a standard for the flow rate of the flowing medium. The surface area of (R.sub.S) is greater than the surface area of (R.sub.H) and extends farther toward a fastening of the substrate, in order to prevent a flow of heat out of the vicinity of the measuring resistor (R.sub.H). The measuring resistor (R.sub.H) and the heating resistor (R.sub.S) are located on the downstream portion of the substrate, on a lip set off by a slit. With this disposition of the measuring resistor (R.sub.H), soiling of the substrate affects the measurement result only slightly.
    • 一种用于确定具有基板作为载体的流动介质和布置在基板上的电阻器布置的流量的装置,其中包括层状测量电阻器(RH)以及同样层状的加热电阻器( RS),其加热输出被调节为使得测量电阻器(RH)具有恒定温度,加热电阻器(RS)的加热输出是流动介质的流量的标准。 (RS)的表面积大于(RH)的表面积,并且朝向基板的紧固延伸更远,以防止热量流出测量电阻器(RH)附近。 测量电阻器(RH)和加热电阻器(RS)位于基板的下游部分,在由狭缝引出的唇缘上。 通过测量电阻(RH)的这种布置,衬底的污染仅稍微影响测量结果。