ENGINE SYSTEM

This engine system comprises a fuel tank, an internal combustion engine, an electric generator, a recoil starter, a control unit, an injector, a fuel pump, an ignition device, and a detection unit that detects the internal combustion engine speed and the like. The control unit determines whether or not the internal combustion engine will be able to autonomously rotate on the basis of the engine speed and the like during the start-up period of the internal combustion engine by the recoil starter. If the internal combustion engine cannot autonomously rotate, power is not supplied to the ignitiondevice, injector or fuel pump. If the internal combustion engine is able to autonomously rotate, power is supplied to the ignition device, injector and fuel pump. 发动机系统具有：燃料箱、内燃发动机、发电机、反冲启动器、控制部、喷射器、燃料泵、点火装置、以及、检测内燃发动机的转速等的检测部。在反冲启动器所进行的内燃发动机的启动期中，控制部基于转速等而对内燃发动机是否能够自持旋转进行判定。若内燃发动机不能够自持旋转则不向点火装置、喷射器以及燃料泵供给电力。若内燃发动机能够自持旋转则向它们供给电力。