Internal combustion engine with covered toothed belt for a camshaft

The internal combustion engine with a toothed belt for transmission of motion from a crankshaft to a camshaft is provided with a capsule type belt cover (9, 10, 11, 12) whose rear (9, 10) and front (11, 12) are divided into bottom and top elements close to the division plane (3) between the cylinder block (1) and the cylinder head (2).