To provide a cylinder direct injection type internal combustion engine realizing combustion with good combustion stability and fuel consumption performance, and less exhaust emission regardless of fluctuation of load conditions.
The cylinder direct injection type internal combustion engine is provided with a fuel injection valve 11a with a narrow spray angle generating stratified air-fuel mixture around a spark plug 12 being guided by a cavity 4A formed on a piston crown surface, and a fuel injection valve 11b with the wide spray angle generating the stratified air-fuel mixture around the spark plug 12 being oriented to directly spray the spark plug 12. On a stratified high load operating condition, the stratified air-fuel mixture is generated by the fuel injection valve 11a, and on a stratified low load operating condition, the stratified air-fuel mixture is generated by the fuel injection valve 11b.
HOTTA ISAMU
KUBO MASAAKI
ITONAGA KAZUMICHI
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