FUEL PROPERTY DETECTION DEVICE FOR CONSTRUCTION EQUIPMENT AND CONSTRUCTION EQUIPMENT PROVIDED THEREWITH

It is intended to employ a system of detecting a property of fuel in the course of a pipeline, while improving accuracy and stability of the fuel property detection. Disclosed is a device which comprises a sub-tank (7) provided in the course of a fuel pipeline connecting a fuel tank (4) and an engine (3), and a sensor (8) capable of detecting the property of fuel inside the sub-tank (7). The sub-tank (7) has a fuel inlet (7a) for introducing therethrough fuel from the fuel tank (4), and a fuel outlet (7b) for sending out therethrough the fuel toward the engine (3).