To provide a variable-displacement-type supercharger of an internal combustion engine, in which even if a mobile vane mechanism is provided in each of a turbine and a compressor, the dive mechanisms of the mobile vanes can be prevented from growing in size.
In the variable-displacement-type supercharger 1 provided with the mobile vane mechanisms in both of a turbine 2 and a compressor 3, an actuator 41 is in common use for both the exhaust- and intake-side mobile vane mechanisms, and the operation of the actuator 41 is transmitted to both the mobile vane mechanisms by the drive mechanism 40 to open and close the mobile vane of each of the mobile vane mechanisms. The drive mechanism 40 is provided with a halting mechanism 70 for not moving but halting the mobile vane of the intake-side mobile vane mechanism with the mobile vane of the exhaust-side mobile vane mechanism being driven.
Tatsuo Egami
Satoshi Nakamura