Supercharging assist device and supercharging assist method

Abstract

A supercharging assist device for assisting supercharging of a turbocharger mounted to an emergency diesel power generation set includes: a supply source capable of discharging assist air; an assist air line having a first end connected to the supply source and a second end connected to a compressor of the turbocharger, the assist air line being configured such that the assist air flows through the assist air line from the supply source toward the compressor; a solenoid valve disposed in the assist air line; and a control device configured to be capable of controlling opening and closing of the solenoid valve. The emergency diesel power generation set is configured such that the engine is operated within a high idle rotation speed range set in advance in a predetermined period until a load is applied to the engine, and the control device is configured to control the solenoid valve to open a first time before a point of time when the load is applied to the engine in the predetermined period.