SURVEY OF METHODS OF CALCULATING PARAMETERS OF MARINE DIESEL OPERATING CYCLE

The need in research works on improving working process of internal combustion engines requires analyzing parameters of operation cycle. The aim of the study is to create a generalized technique for calculating the high-speed cycle diesel engines under different ways of working processes based on well-researched and reliable methodology based on using dependencies containing the general parameters of the engine performance. With the development of technology, particularly, engine manufacturing and evolution of engineering thought, by combining and add-on workflow operationalization of internal combustion engines there was received a reliable Grinevetskiy-Mazing technique of engineering calculations as a general system. Professor V.I. Grinevetskiy in his thermal design offered a pre-set temperature of residual gases Т г and cylinder filling factor ηN and gave formulas to calculate the starting compression temperature coefficient γг. The follower of V.I. Grinevetskiy, E.K. Mazing offered to evaluate the temperature of residual gases Т г and residual gas coefficient γг, and to calculate temperature of starting pressure Та and filling coefficient ηN introducing value of temperature Т′ 0 (air wormed by cylinder walls) into Grinevetskiy equation system. Today there are various software analytical complexes with different capacity (number of integrated functions), assignment (analysis, diagnostics, check calculation, design etc.), as well as basic method of calculation, which is the basic principle of the whole logic complex. Grinevetskiy-Mazing technique that has passed evolution of specifications and complements made in the course of time forms the basis of calculating method of operation cycle of marine diesel engines.