| 摘要 |
PROBLEM TO BE SOLVED: To provide a configuration capable of detecting mixing of irregular fuel without having a detection configuration for detecting the mixing of the irregular fuel such as a tank weight measuring device or a fuel property sensor in a work machine or the like having an engine and a fuel tank for storing fuel supplied to the engine, which is different from a conventional configuration.SOLUTION: A remote server of this invention receives identification information which is information for identifying a work machine or a ship having an engine and a fuel tank for storing fuel supplied to the engine and prescribed operation data from the work machine or the ship. The remote server receives fuel supply information showing whether the fuel is supplied to the fuel tank or not and an engine exhaust temperature as the operation data from the work machine or the ship, determines fuel supply timing based on the fuel supply information, and detects mixing of irregular fuel which is different from regular fuel based on a change state of the engine exhaust temperature in a period having the determined fuel supply timing therein. |
