Liquid Dosing Arrangement
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United States of America Patent
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Issued Date -
Mar 27, 2008
app pub date -
Dec 21, 2004
filing date -
Dec 21, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A liquid dosing arrangement has a liquid supply system with a first pressure sensor for measuring a first pressure p.sub.1; a liquid delivery system, with a second pressure sensor for measuring a second pressure p.sub.2; and an injection valve, which is arranged so that the liquid is supplied through a restricting member in the injection valve and let through the restricting member by a pulsed opening and closing valve mechanism. The pressure drop, and the dimensions of the restricting member in the injection valve, are selected to make the velocity .nu. of the liquid flowing through the restricting member is high enough to make the flow of liquid through the liquid delivery system independent of the viscosity of the liquid.
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