DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a direct injection spark ignition internal combustion engine that ensures positive ignitability for enabling a stratified charge combustion region to expand positively on a heavy load side. SOLUTION: A spark plug and a fuel injection valve that injects fuel directly into a cylinder are provided. The fuel injected from the fuel injection valve is made to travel along a path near the spark plug, either directly or being deflected. A crank mechanism offsets the center of a crankshaft with respect to a central axis of a piston, so as to reduce a crank angular velocity during a compression stroke.