Fuel injection apparatus and method for cylinder injection type internal combustion engine

A fuel injection apparatus for cylinder injection type internal combustion engines, which includes a fuel injection valve for injecting fuel directly into a combustion chamber, wherein said fuel injection valve has two electromagnetic coils which are constructed to switch a state of current flow between a Valve Starting To Open state and a subsequent Valve Held Open state of said fuel injection valve, and the state of current flow is switched so that a cycle of the Valve Starting To Open state and the Valve Held Open state is repeated at least twice during one fuel injection timing.

A fuel injection apparatus for cylinder injection type internal combustion engines, which includes a fuel injection valve for injecting fuel directly into a combustion chamber, wherein said fuel injection valve comprises a valve element and a valve seat for opening and closing a fuel passage and further comprises a radial fuel passage located upstream of the valve seat, which radial fuel passage leads radially from outside to inside to impart a swirling force to fuel, and a fuel flow flowing radially from outside to inside is formed in said radial fuel passage at least twice during one fuel injection timing.

A fuel control method for a cylinder injection type internal combustion engine which is started by a starter and has a fuel injection valve for injecting fuel directly into a combustion chamber, wherein said fuel injection valve is operated to open and close a fuel passage at least twice at one fuel injection timing during an operation of the starter.

A fuel injection apparatus for cylinder injection type internal combustion engines, which includes a fuel injection valve for injecting fuel directly into a combustion chamber and which is adapted to switch a state of combustion between stratified combustion and homogeneous combustion, wherein said fuel injection valve is constructed to switch between a spraying state of long penetration and another spraying state of short penetration, switches to the short penetration spraying state in a specific region of the stratified combustion, switches to the long penetration spraying state in a specific region of the homogeneous combustion, and injects fuel at least twice during one fuel injection timing in the state of short penetration.

A fuel injection apparatus for a cylinder injection type internal combustion engine, which comprises a fuel injection valve for injecting fuel directly into a combustion chamber, the engine having an ignition plug for igniting a fuel spray injected by the fuel injection valve, wherein said fuel injection valve includes, on an injection hole thereof, a deflection element for deflecting the fuel spray toward the ignition plug, and fuel is injected from said deflection element toward the ignition plug at least twice during one fuel injection timing.

An in-cylinder injection type internal combustion engine comprising at least one combustion chamber into which air is inhaled, at least one fuel injection valve for supplying fuel directly into said combustion chamber, an ignition plug for igniting fuel, a piston for changing volume of said combustion chamber, a flow generator provided on an intake port to generate an air flow in the combustion chamber so that spray is guided to said ignition plug by the air flow, and injection control means for controlling fuel injection such that fuel required for combustion is injected from said fuel injection valve while being divided in plural times.