Patent ID: 7966810

Claim:
A control device of an internal combustion engine, comprising a microparticle control unit which generates microparticles having a particle diameter larger than that of nanoparticles generated in the internal combustion engine, and supplies the generated microparticles to a space in which the nanoparticles exist or a passage in which the nanoparticles move to make the nanoparticles adsorbed by the microparticles, wherein the microparticle control unit includes an in-cylinder microparticle generation unit which generates the microparticles in a cylinder of the internal combustion engine at a time of deceleration or idle operation of the internal combustion engine, wherein the in-cylinder microparticle generation unit includes: a state determination unit which determines whether or not nanoparticle components derived from lubricating oil are generated in the cylinder at the time of the deceleration or idle operation of the internal combustion engine; and an operation control unit which operates the in-cylinder microparticle generation unit to generate the microparticles in the cylinder, when the state determination unit determines that the nanoparticle components derived from the lubricating oil are generated in the cylinder.