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    • 3. 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。
    • 5. 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。
    • 10. 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
    • US4803875A
    • 1989-02-14
    • US107149
    • 1987-10-13
    • Ulrich KuhnSybille Stumpf
    • Ulrich KuhnSybille Stumpf
    • G01P5/12G01F1/68G01F1/692
    • G01F1/692
    • An apparatus for determining the flow rate of a flowing medium having a substrate fastened at one end with a resistor arrangement disposed on the substrate which includes a layer-like measuring resistor (R.sub.S) and a layer-like heating resistor (R.sub.H). The heating output is regulated such that the measuring resistor (R.sub.S) has a constant electrical resistance, representing a flow rate of the flowing medium. By suitable provisions, such as a meandering pattern for the heating resistor (R.sub.H), the local resistance of the heating resistor (R.sub.H) crosswise to the flow direction is made to decrease toward the fastened end. Thus, the temperature generated by means of the heating resistor (R.sub.H) inside the substrate and the measuring resistor (R.sub.S) decreases toward the fastened end.
    • 一种用于确定流动介质的流量的装置,其具有在一端固定的基板,该基板设置在包括层状测量电阻器(RS)和层状加热电阻器(RH)的基板上。 加热输出被调节,使得测量电阻(RS)具有恒定的电阻,表示流动介质的流速。 通过适当的规定,例如加热电阻器(RH)的曲折图案,使得与流动方向交叉的加热电阻器(RH)的局部电阻朝向紧固端减小。 因此,通过衬底内部的加热电阻器(RH)产生的温度和测量电阻器(RS)朝向紧固端部减小。