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1. 发明授权

US4944182A Air flow rate meter and method for producing an air flow rate meter 失效
标题翻译：空气流量计及空气流量计的制造方法
公开(公告)号：US4944182A
公开(公告)日：1990-07-31
申请号：US292868
申请日：1989-01-03
申请人： Heinz Gneiss , Wolfgang Kienzle , Rudolf Sauer , Werner Wuensch
发明人： Heinz Gneiss , Wolfgang Kienzle , Rudolf Sauer , Werner Wuensch
IPC分类号： G01F1/68 , G01F1/692
CPC分类号： G01F1/692
摘要： When an air flow rate meter is used in the intake tube of internal combustion engines, such a meter typically having a flat substrate with at least one resistor film disposed on it, the problem arises of dirt deposits on the substrate end face facing into the flow, which cause undesirable changes in the characteristic curve compared with the calibrated new state of the air flow rate meter. The novel embodiment of the air flow rate member is intended to enable calibration based on conditions expected in practice. To produce the effect, while the air flow rate meter is new, of long-term soiling of an air flow rate meter substrate over a period of operation, a leading body, for instance shaped as a U, is disposed on the end face of the substrate facing into the flow. The leading body simulates a soiled effect while the air flow rate meter is still new, and this effect is taken into account in the calibration. The leading body may be of electrically conductive plastic or lacquer and may be connected to a ground line (15). The air flow rate meter is quite generally suitable for measuring flowing media.
摘要翻译：当在内燃机的进气管中使用空气流量计时，这种通常具有设置在其上的至少一个电阻膜的平坦基板的仪表，存在着面对流体的基板端面上的污垢沉积问题，与空气流量计的校准新状态相比，其特性曲线产生不期望的变化。空气流量构件的新颖实施例旨在使得能够基于实践中期望的条件进行校准。为了产生效果，当空气流量计是新的时，在运行期间长期污染空气流量计基板，例如成形为U的引导体设置在衬底面向流动。空气流量计仍然是新的领先机构模拟污染效应，并且在校准中考虑到这一影响。引导体可以是导电塑料或漆，并且可以连接到接地线（15）。空气流量计通常适用于测量流动介质。

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