Flow meter and method of using the same
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United States of America Patent
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Nov 27, 2007
Grant Date -
Feb 1, 2007
app pub date -
Feb 6, 2006
filing date -
Feb 4, 2005
priority date (Note) -
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Abstract
The invention relates to a new method and a new apparatus to accurately measure flow rates in injection systems such as gasoline, direct injection gasoline and diesel downstream of the injector where the fuel (liquid in general) is discharged from a nozzle (e.g. an injector). More specifically, it measures the flow velocities and volumetric flow rates in highly transient flows discharged cyclically with injection duration within a few hundred microseconds. Moreover, it is able to resolve multiple injection shots produced within an engine cycle with high volumetric (0.01 mm3) and temporal (10 .mu.s) sensitivities. The main uses of this instrument in automotive industry are manufactures of FIE, injection test machines and injection diagnostic systems. In other industries the uses maybe represented by measuring and controlling of highly transient flows with a need to accurately perform quantitative flow data in wide range of timing and dosing.
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