INTERNAL COMBUSTION ENGINE AND CONTROL METHOD THEREOF

摘要

An ECU 20 is provided with a surge avoidance unit (process) S10 configured to determine whether or not a compressor 5b of a turbocharger 5 enters a surging state during vehicle deceleration, and when the compressor 5b is determined to enter the surging state, acquires a first target opening degree TAn of a nozzle vane 5c in a turbine 5a of a turbocharger 5 based on an operation state and a first opening map M1 as a surge avoidance control, controls the nozzle vane 5c to a surge avoiding first target opening degree TAx if the first target opening degree TAn is smaller than a predetermined surge avoiding first target opening degree TAx, and controls the nozzle vane 5c to the first target opening degree TAn if the first target opening degree TAn is not less than the surge avoiding first target opening degree TAx. Therefore, it is possible to avoid the surging state of the compressor 5b.