| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection device for an internal combustion engine that can change a spray shape by fuel pressure in accordance with a combustion mode of the internal combustion engine. <P>SOLUTION: A plurality of injection orifices 25 are arranged to spread horizontally in a fuel injection valve 21 when a direction of the center line CL of a cylinder 2 is defined as a vertical direction. When an angle formed of two neighboring injection axes is defined as an insert angle out of a plurality of injection axes Axf for defining injection directions from the respective orifices 25, the plurality of injection orifices 25 are configured so that the insert angle θ1 formed of the two injection axes located near the center of the cylinder 2 is smaller than other insert angles θ2, θ3. When an average air-fuel ratio changes more closely to a lean side than a predetermined value during the execution of a homogeneous lean-burn operation, the fuel pressure of fuel supplied to the fuel injection valve 21 is increased. <P>COPYRIGHT: (C)2013,JPO&INPIT |
