Engine system in which transformer is arranged in independent ventilation path

摘要

Provided is an engine system where even if a transformer is added to make it possible to use an engine system under an alternating current power supply different from an intended voltage for an electric device, a heat balance in the package remains effectively unchanged regardless of the presence or absence of the transformer. An engine (2) and electric devices to drive an engine system are housed in a package (1). When a transformer (20) of which an alternating current power supply corresponds to the primary side and an intended voltage of electric devices to drive the engine system corresponds to the secondary side, is housed in the package, an air intake port, an air discharge port, and a ventilation fan, for cooling the transformer are provided in a ventilation path independent from the other devices.