TURBOCHARGING SYSTEM FOR INTERNAL COMBUSTION ENGINE

A supercharging system for an internal combustion engine comprising a turbocharger (10) including a compressor (10a) and a turbine (10a), and a pressure wave supercharger (20) performing supercharging of the internal combustion engine (1) by increasing a pressure of gas led into each of cells (23) from an intake gas inlet port (24) using a pressure wave of exhaust gas led into the cell (23) front an exhaust gas inlet port (28a) and discharging from an intake gas outlet port (25) to an intake passage (3) the gas pressurized, wherein a case (21) of the pressure wave supercharger (20) is connected to the intake passage (3) upstream of the compressor (10a) via the intake gas inlet port (24), and is connected to the intake passage (3) downstream of the compressor (10a) via the intake outlet port (25), and is connected to an exhaust passage (4) downstream of the turbine (10b) via the exhaust inlet port (28a) and an exhaust gas outlet port (28b).