SUPERCHARGE PRESSURE CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a supercharge pressure control device allowing a simple structure by controlling a nozzle vane by using positive pressure. SOLUTION: This supercharge pressure control device 1 is provided with a positive pressure control actuator 2 capable of driving a nozzle vane 20a of a variable nozzle type turbo charger 20 by positive pressure and a first control valve 4 imparting positive pressure to the positive pressure control actuator 2.