Fuel injector diagnostic for dual fuel engine
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United States of America Patent
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Feb 21, 2012
Grant Date -
Jun 9, 2011
app pub date -
Apr 8, 2010
filing date -
Apr 8, 2010
priority date (Note) -
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Abstract
Various systems and methods are described for controlling fuel injection of a dual fuel engine which includes first and second fuel rails and first and second fuel pumps. In one example, while pumping is suspended in the second fuel rail, the first fuel is injected to all but one cylinder of the engine and the second fuel is injected to the one cylinder in a predetermined sequence. As such, the fuel injector injecting to the one cylinder is isolated and its performance may be assessed without significantly affecting engine performance.
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