To provide a lubrication device capable of retaining a sufficient lubrication effect for a necessary lubrication part even if an interface position between a lubrication oil layer of a complex solution and a coolant layer changes.
A lubrication device 1A circulates a complex solution, by feeding a complex solution which is prepared by mixing lubrication oil and a coolant insoluble to the lubrication oil and having a higher density and a lower viscosity than those of the lubrication oil, to the inside of a case 3, by sucking the complex solution stored in a storage part 10 through a first strainer 17, and by feeding that complex solution again to the inside of the case 3. The first strainer 17 is arranged in a state movable in the storage part 10 and at a boundary P between a lubrication oil layer A of the complex solution reserved in the storage part 10 and a coolant layer B.
ARAKAWA KAZUYA
TOKOZAKURA DAISUKE
ICHIGE KEISUKE
TOYOTA CENTRAL RES & DEV
Tatsuo Egami
Satoshi Nakamura
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