Internal combustion engine

Abstract

One aspect of an internal combustion engine according to this disclosure is an internal combustion engine capable of burning a fuel containing hydrogen gas, comprising: a cylinder block containing at least one cylinder and including a crankcase which contains a crank shaft disposed below the cylinder; a rocker cover which defines an upper space covering an upper portion of a cylinder head disposed above the cylinder block; a ventilation gas inlet formed in the crankcase; a gas passage forming part which forms a gas passage connecting a crank chamber of the crankcase and the upper space of the rocker cover; and a discharged gas outlet formed in an upper portion of the rocker cover.

Dependencies are inferred from the claim text.