Mathematical modelling of four stroke diesel generator

The industrialization process is one of the most basic parameters that allows the continuous development of information and technology, with one of the most important parameters of economic development from the past to the present day. The increase in technological developments has gained momentum due to radical changes in the industrialization process from the world past to the present day. Hence, the measurement of the superiority of economic comparisons of developed countries in terms of industry is now based on the development of technological structures. The internal combustion engines examined in this thesis are; among the most important inventions that have been invented from the past to the present day. Internal combustion engines are frequently used in maritime, sea and railway transport and in the industrial sector, and also contain very complex parameters from engineering point of view. For example; the most important equipments in the engine room must be firstly operated and maintained under proper conditions so that failures that may result in the failure or failure of a significant breakdown operation that may occur during the dispatch of ship may occur in the main engine, generator or engine room. Working with main engine and generator during operation; System components such as T / C turbine, T / C compressor, lubrication and cooling systems, etc. are available. The problems that may occur in these systems or components directly affect the dispatch of the ship. This thesis is a mathematical model of a four-stroke diesel engine; It involves modeling the process from T / C compressor exhaust air through the air inlet to the outet of T / C turbine exhaust gases from turbine wheels. In order to be able to carry out calculations, it is assumed that the cylinder gases fit the ideal gas law and there are no leaks or backflows. Based on the principle of conservation of mass and energy, the modeling concept was created by using the single-zone thermodynamic model and the Wiebe Burning Rate function on the temperature and pressure changes on the cylinder gases (air, fuel, burnt gas) of the chemical energy contained in the fuel sprayed after being taken into the air cylinder. T / C compressor, scavenge manifold, intake port, in-cylinder processes (compression, spray, ignition delay, combustion, expansion exhaust, filler change), exhaust manifold, T / C turbine are modeled as separate subsystems. The interworking of all these systems and components is modeled dynamically based on the change in crankshaft angle. The modeling was created and controlled on excel. The crank angle is taken as a reference, the transition of the crank angle is provided and the whole system and the subsystems are operated together by transferring data to one of the models included in the system. The diesel engine modeled; YANMAR 6EY22ALW Type is a six-cylinder four-stroke diesel engine. Constant parameters such as cylinder diameter, stroke length, suction port opening time, connecting rod length were taken from the engine technical catalog. Values such as T / C compressor and scavenger manifold pressure values, time of maximum pressure build up, T / C turbine information, number of revolutions and fuel consumption in variable states are obtained by taking the test data of the variable state of the engine. Variation of pressure and temperature values in cylinder, pressure and temperature values of exhaust manifold, power generated by T / C Turbine, power of scavenger manifold pressure and crankshaft power were calculated by operating the created model at different loads. A change in the amount of fuel supplied to the machine during the operation of the machine has led to a study in which changes to the main engine can be monitored.