Diagnostics of a Ship Diesel Engine by Proxy Indicators of Fuel Combustion

The task of determining the effective power of a ship's internal combustion engine is of primary importance for the fleet in determining the operational reliability and economic performance of the ship's power plant as a whole. However, the reliability of determining the effective power by known methods (using standard measuring instruments for measuring thermal parameters) often does not meet the requirements of regulatory and technical documentation. Therefore, the urgent task is to develop a universal reliable method for determining the relative power. Estimation of the level of load of the main engine of the ship is based on the use of proxy indicators. Thus, the most complete are the characteristics of fuel combustion in cylinders. The exhaust gas temperature characterizes the presence of excess air in the cylinders, the quality of fuel atomization and combustion. It also indirectly characterizes the level of the heat-stressed state of the engine. The article presents an empirical dependence of the load of a diesel engine, obtained on the basis of statistical data determined at a free running of a fishing vessel without towing an object.