DEVICE AND METHOD FOR PROTECTING ENGINE OF CONSTRUCTION MACHINE

摘要

A device for protecting an engine of a construction machine, capable of diagnosing the tendency of exhaust gas temperature to detect abnormality of each cylinder of the engine in advance, the tendency of exhaust gas temperature being inherent in the individual cylinders of the engine and corresponding to an engine speed. A device for protecting an engine of a construction machine has a speed sensor (14) for detecting speed of an engine mounted on the construction machine, cylinder temperature sensors (20a-20p), sixteen in the number for example, for individually detecting the temperature of exhaust gases from cylinders of the engine, and a data recording device (26) for storing the detected engine speed and the temperature of exhaust gas from each cylinder in a time-lapse relationship, and a display control device (24). The data recording device (26) outputs trend data generated based on the stored data to, for example, a PC terminal (30) in an office through, for example, a portable terminal (29) etc. The display control device (24) outputs a reproduction display signal of a snapshot generated based on the stored data to a display device (23) in an operation room (5)