Direct injection spark ignition internal combustion engine and fuel injection method for same

A fuel injection control method for a direct injection spark ignition internal combustion engine that intensifies a tumble flow using a fuel injected toward a cylinder bore wall at a time near an intake stroke bottom dead center during homogenous combustion and that includes a fuel injector that directly injects fuel into a cylinder,

• wherein thrust force of the fuel injected from the fuel injector to intensify the tumble flow during homogeneous combustion is changed based on at least one of a detected or estimated temperature of a surface of the cylinder bore wall, a detected or estimated temperature of the injected fuel, and an orientation of an injection hole.

A direct injection spark ignition internal combustion engine comprising:

• a fuel injector including a plurality of injection holes through which fuel is directly injected to a broad area in a cylinder, such that the fuel injected by each of the plurality of injection holes does not interfere with each other,
• wherein the fuel injected by the plurality of injection holes intensifies a tumble flow at a time near an intake stroke bottom dead center during homogenous combustion, and
• wherein thrust force of fuel injected from one of the plurality of fuel injection holes in a direction substantially parallel to a plane parallel to the tumble flow is made larger than thrust force of fuel that is injected from a second of the plurality of injection holes in a direction crossing the plane parallel to the tumble flow.