Supercharged internal combustion engine

A supercharged internal combustion engine (1, 100, 200) comprising: - a motor unit (1A, 101, 201) including a head (3, 103, 203) and an exhaust manifold (36, 236), - a turbocharger assembly (4, 104, 204) fluid dynamically connected to said exhaust manifold (36, 236), wherein said turbocharger assembly (4, 104, 204) includes a turbine (5, 105, 205), a central body (7, 107, 207) and a compressor (6, 106, 206), The turbocharger assembly (4, 104, 204) comprises a lubrication channel (24A, 224A) for the passage of a lubricating fluid hydraulically connected to a lubrication circuit of said motor unit (1A, 101, 201) of said internal combustion engine (1, 100, 200). The turbine (5, 105, 205) comprises a jacket (34, 234), provided at least in part in a body (8, 108, 208) thereof, arranged for the passage of a cooling fluid and in hydraulic communication with an inlet channel (41, 234A) and an outlet channel (42, 234B) hydraulically connected to a cooling circuit (39, 40; 239, 240) of said motor unit (1A, 101, 201) of said internal combustion engine (1, 100, 200). Said inlet channel (41, 234A), outlet channel (42, 234B) and lubrication channel (24A, 224A) being integrated in said turbocharger assembly (4, 104, 204) in correspondence of a connection interface between said turbocharger assembly (4, 104, 204) and the motor unit (1A, 101, 201).