Method for determining an amount of liquid removed from a tank and reducing agent supply device for a motor vehicle

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United States of America Patent

PATENT NO 9765668
APP PUB NO 20120304626A1
SERIAL NO

13548419

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Abstract

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A method for determining an amount of liquid removed from a tank per unit time includes discontinuously feeding the liquid to exhaust gas of an internal combustion engine by at least feeding the liquid through an injection line into the exhaust gas, measuring pressures simultaneously at least at two points in the injection line and determining an amount of liquid fed in per unit time from the measured pressures. The amount of liquid removed between a first point in time and a second point in time is further derived by integrating the amounts of liquid removed per unit time over a period of time from the first point in time to the second point in time. The method allows the precise consumption of the liquid to be calculated and the remaining amount of liquid in the tank to be additionally determined. On-board diagnosis is further possible with the method.

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Patent Owner(s)

  • EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brück, Rolf Bergisch Gladbach, DE 147 623
Hodgson, Jan Troisdorf, DE 164 929
Maus, Wolfgang Bergisch Gladbach, DE 122 1437
Wieres, Ludwig Overath, DE 85 833

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