| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration of start-up performance or fuel economy and cleaning property of exhaust gas generated when fuel is adhered to a wall surface of an intake flow path or an intake valve in a fuel injection control method of an internal combustion engine. SOLUTION: In the internal combustion engine with a fuel injection valve 10 for injecting fuel in an intake flow path 11 for every cylinder 5, a plurality of numbers of fuel injections are performed in one cycle for every cylinder. One injection of them is performed during a period where an intake valve 9 is opened and in-cylinder gas blows back in the intake flow path 11. Also, a ratio of a fuel injection amount during the period where the in-cylinder gas blows back relative to a total fuel injection amount for one cycle of the cylinder is set in accordance with an intake flow path side surface temperature of the intake valve 9 and a measurement amount varying with an inner surface temperature of the intake flow path 11. COPYRIGHT: (C)2011,JPO&INPIT
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