Engine cylinder cover and cylinder

The engine cylinder cover comprises a shell, a plurality of exhaust pipelines and a cooling water jacket, the exhaust pipelines are arranged on the shell and arranged side by side in the length direction of the shell, and the cooling water jacket is arranged on the shell and makes thermal contact with the exhaust pipelines so as to dissipate heat of the exhaust pipelines. The cooling water jacket is provided with a water outlet and a plurality of water inlets, and the water inlets are arranged at intervals in the length direction of the shell. According to the scheme, the cooling water jacket is provided with the multiple water inlets, and the multiple water inlets are formed in the length direction of the shell at intervals, so that the problem that the cooling effect of the exhaust pipeline located behind the cooling liquid flowing direction is poor due to the fact that the temperature of the cooling liquid close to the water outlets is high due to the single flowing direction of the cooling liquid is solve