Fuel injection control apparatus for internal combustion engine
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United States of America Patent
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Jul 19, 2016
Grant Date -
Jun 12, 2014
app pub date -
Dec 6, 2013
filing date -
Dec 7, 2012
priority date (Note) -
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Abstract
A fuel injection control apparatus for fuel injection at optimum timing in correspondence with level of gas flow velocity in an intake port upon intake stroke injection. A fuel injection valve is controlled so as to set a large majority (more than half) of an injection period to inject fuel during an intake stroke in respective cylinders within a period where intake port gas pressure is increased. Upon intake stroke injection, the fuel is injected at optimum timing in correspondence with the direction and the level of gas flow velocity in the intake port. Accordingly, the status of air-fuel mixture in a combustion chamber is excellent. It is possible to improve fuel consumption and to reduce exhaust emission.
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