TURBOCHARGING SYSTEM OF INTERNAL COMBUSTION ENGINE

摘要

A turbocharging system equipped with a pressure wave supercharger (20) which supercharges an internal combustion engine (1) by raising the pressure of gas in a cell (23) with the pressure wave of exhaust gas introduced from an exhaust gas introduction port (26) to the cell (23) and discharging the gas having raised pressure from intake gas discharge ports (28b, 25) to an intake gas passage (3) is further provided with a first motor (29) which rotary drives the rotor (22) of the pressure wave supercharger (20), a valve plate (28) which can change the position of the intake gas discharge port (28b) with respect to the exhaust gas introduction port (26), and a second motor (30). Operation of the first motor (29) and the second motor (30) is controlled, respectively, so that the number of revolutions of the rotor (22) and the position of the intake gas discharge ports (28b) with respect to the exhaust gas introduction port (26) are changed based on the flow rate of exhaust gas to be recirculated from the exhaust gas passage (4) to the intake gas passage (3).