Increasing the efficiency of marine engines, which operate on heavy hydrogen-enriched fuel

Рroblem. At present one of the most important issues of marine transport are decreasing transportation costs and pollutions into the environment. Low-speed and medium-speed diesel engines will be used as the main and auxiliary energy sources in the transport fleet now and in the near future. In connection with the constant increase in the cost of fuel and energy resources, the issue of reducing costs for the transport of ships, which is directly related to the cost of fuel, is acute. Therefore, the transition to the use of heavy residual, cheaper fuels is understandable and natural. However, the use of such fuels is associated with certain deterioration of the work process in engines and, accordingly, indicators of economy and environmental friendliness. The hydrogen implementation as additional catalyst of operation process is the effective way for solving this problem. Goal. The main goals of this research and development are the following: to obtain the effective method of heavy fuel hydrogen saturation and identify the hydrogen influence on diesel engine operation process. Methodology. One of the possible methodological ways to improve the operation process in the internal combustion engine is the use of hydrogen enrichment of the fuel-air mixture. Despite a considerable amount of research in the direction of using hydrogen to improve the working process of internal combustion engines, there are still many unsolved problems. Results. In the paper, the original technology of hydrogen enrichment of the fuel-air mixture is determined and the main indicators of the internal combustion engine when using heavy fuel are established. Originality. The effectiveness of using hydrogen as a catalyst for the working process in the diesel engine is shown. A small level of heavy fuel saturation in a range of 0.07…0.106 % allow to decrease specific fuel consumption up to 0.9 % and nitrogen pollutions on 10 %, approximately. Implementation of proposed solution allows to significantly decrease the total fuel consumption of marine power diesel engines. Practical value. For instant practically, decreasing total fuel consumption of diesel engine MAN B&W 12G90ME-C10.5-LPSCR with MCR power of 74.88 MW is 2,8 t/day or the profit may be approximately as big as $1.300/day.