| 摘要 |
PROBLEM TO BE SOLVED: To set a compression ratio of an internal combustion engine as high as possible, and to enable stratified charge combustion also with respect to wider fluctuation of a fuel injection flow rate from a fuel injection valve, in a cylinder injection type spark ignition internal combustion engine. SOLUTION: The cylinder injection type spark ignition internal combustion engine 10 is equipped with the fuel injection valve 1 provided in an intake valve 6 side of a cylinder head 11 and injecting fuel in a central direction of a combustion chamber 9, a first ignition plug 2 provided in an approximate center of the combustion chamber 9, and a second ignition plug 3 provided in a portion of the cylinder head 11 opposing to the fuel injection valve 1. A hump part 8a corresponding to a shape of an inner wall face of the cylinder head 11 is provided for a top part of a piston 8, and a first cavity 8b and a second cavity 8c are provided on the hump part 8a opposing to the first ignition plug 2 and the hump part 8a opposing to the second ignition plug 3, respectively. COPYRIGHT: (C)2005,JPO&NCIPI
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