Method of operating an internal combustion engine
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United States of America Patent
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Mar 19, 2019
Grant Date -
Jan 18, 2018
app pub date -
Jul 12, 2017
filing date -
Jul 13, 2016
priority date (Note) -
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Abstract
A method and apparatus are disclosed for determining the fuel quantity that is actually injected by a fuel injector in an internal combustion engine. A fuel injector is operated to perform a fuel injection. The first discharge stroke of the fuel pump is deactivated following a start of the fuel injection for preventing the discharge stroke from delivering fuel into the fuel rail. A value of a pressure drop caused into the fuel rail by the fuel injection is calculated. A value of a fuel quantity injected by the fuel injection is calculated on the basis of the calculated value of the pressure drop.
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