To accurately replenish engine oil in the quantity consumed by an engine.
This engine oil supply device 28 supplies the engine oil to the engine 10, by sending out the engine oil stored in a storage tank 34 by an oil pump 37; and has a control part 50 for supplying the engine oil to the engine 10 by operating the oil pump 37 only for a predetermined operation time for replenishing the engine oil consumed by the engine 10 every time when the engine 10 is operated for a specific time, and an outside air temperature detecting sensor 52 for detecting the outside air temperature; and is constituted so that the control part 50 adjusts the operation time of the oil pump 37 on the basis of the outside air temperature detected by the outside air temperature detecting sensor.
ANDO YOHEI
KOJIMA TERUHIKO
KANAI HIROSHI
Kushibuchi Kazue