CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Japanese Patent Application No. 2020-095140 filed on May 30, 2020, the entire disclosure of which is incorporated herein by reference.

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to a work machine, a control method thereof, and a supply system.

Description of the Related Art

Concerning lubrication of an engine, there has been disclosed a technique of estimating the tilt of an oil surface in an oil pan based on the tilt of a vehicle and the like and controlling an oil amount to be returned to the oil pan based on the estimation value (Japanese Patent Laid-Open No. 2016-127552).

SUMMARY OF THE INVENTION

According to one embodiment of the present invention, there is provided a work machine comprising: an engine; a reserving chamber configured to reserve lubricating oil to be supplied to the engine; a channel forming member configured to form a channel of the lubricating oil from the reserving chamber to the engine; a press-feed unit configured to press-feed the lubricating oil reserved in the reserving chamber to the engine via the channel forming member; a float configured to float on an oil surface of the lubricating oil reserved in the reserving chamber; a detection unit provided in the reserving chamber and configured to detect the float; a determination unit configured to determine a tilt state of the reserving chamber based on a detection result of the detection unit; and a control unit configured to control the press-feed unit based on a determination result of the determination unit.

According to another embodiment of the present invention, there is provided a control method of a work machine including: an engine; a reserving chamber configured to reserve lubricating oil to be supplied to the engine; a channel forming member configured to form a channel of the lubricating oil from the reserving chamber to the engine; a press-feed unit configured to press-feed the lubricating oil reserved in the reserving chamber to the engine via the channel forming member; a float configured to float on an oil surface of the lubricating oil reserved in the reserving chamber; and a detection unit provided in the reserving chamber and configured to detect the float, the method comprising: determining a tilt state of the reserving chamber based on a detection result of the detection unit; and controlling the press-feed unit based on a determination result in the determining.

According to still another embodiment of the present invention, there is provided a supply system mountable in a work machine and configured to supply lubricating oil to an engine of the work machine, comprising: a reserving chamber configured to reserve lubricating oil to be supplied to the engine; a channel forming member configured to form a channel of the lubricating oil from the reserving chamber to the engine; a press-feed unit configured to press-feed the lubricating oil reserved in the reserving chamber to the engine via the channel forming member; a float configured to float on an oil surface of the lubricating oil reserved in the reserving chamber; a detection unit provided in the reserving chamber and configured to detect the float; a determination unit configured to determine a tilt state of the reserving chamber based on a detection result of the detection unit; and a control unit configured to control the press-feed unit based on a determination result of the determination unit.

