Surge avoidance control device, internal combustion engine system, surge avoidance control method, and program

A surge avoidance control device configured to perform control, over an internal combustion engine including an internal combustion engine body and an exhaust turbine supercharger, to avoid a surge that occurs in the exhaust turbine supercharger, the surge avoidance control device comprising:

• a state transition determination unit configured to determine whether a state of the internal combustion engine body has transitioned to a predetermined deceleration state in which a surge is estimated to occur in the exhaust turbine supercharger;
• and
• a fuel-injection-amount control unit configured to regulate, if the state transition determination unit determines that the state has transitioned to the predetermined deceleration state, a fuel injection amount of a fuel to be injected into the internal combustion engine body such that the fuel injection amount becomes equal to or greater than a predetermined amount if the fuel injection amount is less than the predetermined amount.

(canceled)

(canceled)