Patent ID: 8686577

Claim:
An engine generator, comprising: an engine; an air motor for energizing the engine; a generator to be driven by the engine to generator electricity; a first gas supply for accommodating and supplying a first unburnable gas; a switching valve; a first passage connecting between the first gas supply ( 11 ) and the switching valve; a second passage connecting between the switching valve and an ejection head for ejecting the first unburnable gas therefrom into the air; a third passage connecting between the switching valve and the air motor; wherein the switching valve takes any one of three positions, i.e., a first position connecting between the first and second passages, a second position connecting between the first and third passages, and a third position disconnecting between the first passage and the second and the third passages; a second gas supply connected to the third passage for accommodating and supplying a second unbumable gas, the second gas supply having a plurality of container units, each of the units comprising a plurality of second containers for accommodating the second unburnable gas, an amount of the second unburnable gas in each of the units being an amount necessary for a one-time driving of the air motor for energizing the engine; and a valve unit for controlling pressures of the first unburnable gas supplied from the first gas supply and the second unburnable gas supplied from the second gas supply to a certain pressure suitable for driving the air motor.