FUEL NATURE DISCRIMINATING SYSTEM FOR WORKING MACHINES, AND FUEL NATURE DISCRIMINATING METHOD FOR WORKING MACHINES

摘要

Provided is a fuel nature discriminating system for discriminating whether or not a fuel fed to a working machine is the normal one and for analyzing the discrimination result, thereby to perform appropriate control operations. The fuel fed from a feed nozzle flows into a fuel tank through a fuel catching portion. Fuel nature detecting means measures, at a predetermined measurement timing (or at a refueling instant), the nature of the fed fuel. Measured data generating means generates measured data on the basis of not only the measurement result but also the fuel residue and the environmental temperature. Measured data analyzing means executes, in accordance with the analysis result of the measured data, a restriction on an engine output, a warning to the user, and an alteration of the user's evaluation.