An oil storage amount determination device that determines the amount of oil stored in a tank (35), wherein the tank (35) is constructed such that a gaseous fuel that has been decompressed by a decompression valve (33) flow into the tank, a separation unit...

There are provided a variable compression-ratio mechanism (20) capable of varying an engine compression ratio in accordance with a rotational position of a control shaft (24); a speed reducer (44) configured to reduce in speed a rotational power of an actu...

It is an object of the invention to provide the operability of an engine power generator (1) having a remote controller (9). A starting switch (90) of a remote controller (9) and a starting switch (12) on a power generator body's side can be operated in pa...