Thermal-type flow meter with bypass passage
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United States of America Patent
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Feb 8, 2005
Grant Date -
Jun 19, 2003
app pub date -
Mar 27, 2002
filing date -
Dec 19, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A flow measurement sensor accurately outputs signals even when pulsation flow is generated at high engine speed and also when pulsation flow accompanying reverse flow is generated. The flow measurement sensor has a flow measurement element which has a heater resistance pattern on one side of a plate-shaped member, and a bypass passage in which the flow measurement element is disposed, a first outlet through which fluid flowing along the surface of the flow measurement element flows out, and a second outlet through which fluid flowing along the back side of the flow measurement element flows out. The second outlet is positioned at a different location from the first outlet.
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