Kucherenko Y. Marine diesels effective parameters monitoring method in operation

Dissertation is devoted to research and development of a method for determining effective parameters of a marine diesel power plant (MDPP) in operation. Efficient power and shaft torque, mean effective pressure and specific oil and fuel consumption are the basic characteristics. These output parameters completely characterize a technical condition of a MDPP in operation. They are used to control a load mode, daily expenses and prediction of residual operational resource. Based on the analysis of effective inboard motor parameters are formed and legally fixed the rate of chartering and operational costs of the vessel. Thus, the thesis is devoted to a current problem of shipping, especially since the effective parameters are changed over time of MDPP operation. The main problem is that in a vast majority of marine vessels, technicians can only determine, with acceptable accuracy, indicating parameters (mean indicated pressure and power indicator). Translation of indicating parameters into the effective ones is performed by a rough estimation of mechanical and mechanical efficiency losses, which reduces an accuracy of the calculations and an accuracy of the diagnostic findings. Mathematical modeling of a MDPP working process, as well as an analysis of a sea trials data (Sea Trials) of various types of vessels listed in the thesis allowed to modify the methodology of Professor G.A. Konakov for determining a mechanical efficiency of a MDPP. Modification of the calculation method based on the use of precisely defined RPMt in an operation values, has allowed to improve an accuracy of the calculation of the mechanical efficiency and effectiveness of the MDPP parameters in 1,5 – 2 times. Mainly, it is possible to escape from empirical estimates in this area and to The method designed in the thesis allows to solve a problem of determining an effective parameters of a MDPP in operation on different types of marine vessels. Solution to this problem will improve quality and efficiency of operation of a vessel. Key words: marine diesel plants, effective parameters, mathematical modeling, mechanical efficiency, turbochargers, spectral analyses.