Fuel injection control method for internal combustion engine
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United States of America Patent
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Feb 13, 2018
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N/A
app pub date -
Sep 12, 2014
filing date -
Jul 22, 2010
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Abstract
A fuel injection control method for an internal combustion engine includes instantaneous injection that injects fuel to a predetermined cylinder is executed immediately when it is determined that a predetermined condition is satisfied after cranking of the engine is started. A leaning influence ratio which is a ratio of a time period during which vaporized fuel supplied to the predetermined cylinder becomes lean to a instantaneous injection time period which is a time period over which fuel is injected by the instantaneous injection is estimated. A threshold value is set based on temperature of the engine. When the leaning influence ratio is larger than the threshold value, the instantaneous injection is inhibited.
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