| 摘要 |
A fuel injection control for an internal combustion engine is performed. A fuel injection start timing from a first fuel injection valve placed in one intake port branching off for each cylinder is set to introduce a spray of fuel into the cylinder at the timing of introducing intake air into the cylinder, and a start timing of fuel injection from a second fuel injection valve placed in the other branching intake port is set in synchronization with the completion of injection of the first fuel injection valve, to start fuel injections from the first fuel injection valve and the second fuel injection valve at these set injection start timings. Accordingly, mixing performance of a spray of fuel and air is increased, and thus, enabling improvements in drivability during deceleration (torque shock), fuel economy, and exhaust emissions.
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