| 摘要 |
Fuel-air mixture is stabilized with respect to the neighboring area of an ignition plug without any effect on deflection of fuel spray due to the air flow (swirl/tumble) in a combustion chamber, and the deposition of fuel onto the side wall of a combustion chamber is reduced, leading to the prevention of smoke. To that end, a fuel injection apparatus includes a fuel injection valve having a nozzle opening to a combustion chamber and an ignition plug, in which the fuel injection valve forms a fuel spray having different. levels of average speed. The fuel injection valve forms a fuel spray having relatively high speed at least in a half way of a single cycle of a fuel injection, and after that, the fuel injection valve forms relatively low-speed fuel spray, and consequently, a fuel-air mixture including high-speed fuel spray is supplied to a neighboring area of the ignition plug.
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