Method and device for detecting the idle stroke of injectors
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United States of America Patent
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Aug 5, 2008
Grant Date -
Sep 6, 2007
app pub date -
Mar 14, 2007
filing date -
Sep 14, 2004
priority date (Note) -
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Abstract
In a method and device for characterising the return stroke of injectors, in particular piezo-injectors of an internal combustion engine provided with a common rail system, when the internal combustion engine is switched off, a constant pressure is dropped in the rail, thereby making it possible to measure the rail pressure and to adjust the injectors by corresponding power. The actuating power is increased until a discontinuity in a temporal progression of rail pressure occurs. The actuating energy applied for the state and a pressure available in the make it possible to measure the return stroke of corresponding injector.
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