Oil-gas separation mechanism of motorcycle engine

The invention provides an oil-gas separation mechanism of a motorcycle engine, and belongs to the technical field of engines. The problem that an oil-gas separation mechanism of an existing engine is poor in separation effect is solved. The engine comprises a shell, the oil-gas separation mechanism comprises a cam shaft located in the shell and provided with an exhaust channel, an exhaust pipe and a sealing piece arranged outside the exhaust pipe in a sleeving mode, the sealing piece comprises an elastic sealing part which is arranged in an annular protruding mode, a mounting hole is formed in the shell, and the exhaust pipe penetrates through the mounting hole and is axially positioned with the shell. The sealing piece extends into the exhaust channel, and the exhaust pipe enables the circumferential edge of the sealing part to be tightly pressed against the channel wall of the exhaust channel. The oil-gas separation mechanism of the motorcycle engine has the advantage of being good in oil-gas separation eff