Engine malfunction detection system

摘要

A system for detecting malfunction of an equipment such as an alternator or a hydraulic switch that is connected to an internal combustion engine and generates an output. In the system, it is discriminated periodically for a predetermined period of time whether the output of the equipment is within a predetermined range, a number of times that the output of the equipment is discriminated to be out of the predetermined range is counted; and the equipment is determined to have malfunctioned when the count is equal to or greater than the reference value. With this, it becomes possible to detect the malfunction of the equipment accurately.