INTERNAL COMBUSTION ENGINE

An internal combustion engine includes an internal combustion engine body, a turbocharger connected to the internal combustion engine body, and an intake device connected to the internal combustion engine body. The intake device includes a first flow path that introduces fresh air into the turbocharger, and a second flow path through which blow-by gas flows from the internal combustion engine body. The second flow path extends adjacent to the first flow path and joins the first flow path at an end of the second flow path from obliquely rearward with respect to a direction in which the fresh air flows. An inner space is provided inside a partition wall that separates the first flow path and the second flow path adjacent to each other.