Device and method for starting internal combustion engine

A device for starting an internal combustion engine, comprising:

• a compressor that supplies combustion gas to the internal combustion engine;
• an electric motor that drives the compressor;
• an internal combustion engine rotation starter device that supplies operation gas without supplying any fuel to the internal combustion engine to drive the internal combustion engine;
• a fuel supply device that supplies fuel to the internal combustion engine;
• and
• a control device that controls driving the electric motor, the internal combustion engine rotation starter device, and the fuel supply device,
• wherein the control device acquires a measurement value of a rotational frequency of the compressor, an internal combustion engine rotation-activation-starting rotational frequency set in advance, and a fuel-supply-starting rotational frequency set in advance,
• when the rotational frequency of the compressor reaches the internal combustion engine rotation-activation-starting rotational frequency, the control device drives the internal combustion engine rotation starter device such that the internal combustion engine rotation starter device to supply the operation gas to the internal combustion engine to cause the internal combustion engine to start air running thereby raising the rotational frequency of the internal combustion engine, and
• when the rotational frequency of the internal combustion engine reaches the fuel-supply-starting rotational frequency by the air running, the control device starts driving the fuel supply device such that the fuel supply device supply fuel to the internal combustion engine to start an operating of the internal combustion engine due to combustion.