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|1. (WO2017199363) MULTI-STAGE TURBO SUPERCHARGING SYSTEM|
|Applicants:||MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
|Title:||MULTI-STAGE TURBO SUPERCHARGING SYSTEM|
This multi-stage turbo supercharging system is provided with: a bypass passage which bypasses any one turbo supercharger from among a plurality of turbo superchargers in an intake passage or an exhaust passage of an engine; a bypass valve provided in the bypass passage; an operation mode selecting unit; a bypass valve opening map selecting unit configured to select, according to an operation mode selected by the operation mode selecting unit, at least one bypass valve opening map from a plurality of bypass valve opening maps which represent respective relationships between a plurality of control parameters of the engine and an opening of the bypass valve; a bypass valve opening determining unit configured to determine an opening command value of the bypass valve on the basis of the bypass valve opening map and the control parameter information representing the plurality of control parameters; and a bypass valve opening control unit configured to control the opening of the bypass valve on the basis of the opening command value of the bypass valve.