Patent ID: 7793631

Claim:
A fuel ignition system for an internal combustion engine, the fuel ignition system being adapted to allow a photocatalyst to ignite a mixture by using a light energy irradiated from a light generator, the fuel ignition system comprising: a combustion chamber; the photocatalyst provided in the combustion chamber; and the light generator for flatly irradiating the light energy to the photocatalyst, wherein the light generator has an irradiation position adjuster, wherein the combustion chamber is formed by a cylinder head and a piston head, wherein the combustion chamber further includes a temperature sensor for sensing a temperature of the combustion chamber, and wherein, when the temperature sensed by the temperature sensor is less than or equal to a certain temperature, the irradiation position adjuster adjusts an irradiation position such that the light energy is irradiated to an end part of a piston head face of the piston head.