Diagnostic method for diesel engine to detect the abnormal combustion as monitoring exhaust gas temperature

摘要

The present invention particularly relates to an abnormal state diagnosis method for a diesel engine using a temperature of the exhaust gas, the exhaust A method for diagnosing an abnormal condition of the diesel engine by using a temperature measurement of the gas temperature sensor and the power meter or a torque meter, an alarm monitoring system, a key input unit and a data display device provided with the exhaust gas, the user inputs a key data step and to enter a minimum collection period according to the combustion chamber and the load-specific exhaust temperature of the engine through collection; Collects the exhaust gas temperature in each combustion chamber and the load operation of the engine in real time, and transmitting to the alarm monitoring system; And transmitting to the alarm monitoring system to collect information in real time, the engine load; A step of storing the separation of the actual exhaust gas temperature by a load that is input in real time an alarm in the monitoring system; Comprising the steps of: determining whether a user-defined minimum collection period has elapsed; If the detection result of the user at least one acquisition period has elapsed from the set comprising the steps of: determining whether there is data collected for the current engine load; Collecting data exists for the current engine load determined result from the current exhaust gas temperature to determine the exhaust temperature is higher than the average value of the collected set, as represented on the monitor within a period that, if the average value is higher than an error occurs in the engine, as well as through an alarm that will alert phase; characterized by consisting of ; The present invention as described above are the minimum for the user to calculate the average exhaust gas temperature and the load to collect information for each combustion chamber of the engine and arbitrarily so that you can enter the collection period, and that during operation of the engine, and exhaust temperature for the period specified value of each load continues to receive input from the manner of calculating the average is variable based on the value, and then it automatically sets the current regardless of the various characteristics of the changes or, a number of auxiliary equipment and fuel and engine lubricating oil that is used by the customer for the physical properties of the engine after the engine itself, which is caused by the delivery to determine the exhaust temperature and the abnormality of the engine are compared in a manner that it would have to accurately determine abnormalities in each combustion chamber of the engine, which can dramatically improve the reliability based on the abnormality determination of the engine.