Improvement of environmental and ecinomic indicators in marine vechicls using various fuel additives

  • 1 Akaki Tsereteli State University, Kutaisi, Georgia
  • 2 Batumi State Maritime Academy, Batumi, Georgia


The paper will discuss and analyze the values of ecological and efficient indicators of standard fuels used in marine vehicles, and their negative impact on the surrounding environment. Reasons for the deterioration of environmental indicators, considering the processes that occur in the engine and the properties of the fuel. The paper also discusses environmental and economic indicators by using various fuel additives. Marine internal combustion engines’ most important operational characteristics are reliability, fuel efficiency and environment safety indicators, which depend on complex design and operational factors. One of the most important factors is the quality of diesel fuel. The physical and chemical properties of fuel affect the mixture formation and combustion processes in diesel cylinders, the completeness of the combustion of the fuel mixture, fuel efficiency, the content of harmful substances in engine exhaust gases, fuel supply equipment and cylinder parts – (piston group) and others. The most common way to ensure diesel fuel’s required properties is to bring multifunctional additives into practice. An overview of the most modern diesel fuel additives will be presented based on the results of the patent search, which ensures improved formation of the mixture and complete combustion of fuel, The article will also present information about the chemical composition of additives and the effectiveness of their mechanism of action. Dependence on ignitability and structure of air-fuel mixture is described in the paper. Foreign manufacturers of diesel fuel additives are indicated. Tests conducted on four-stroke high-speed diesel engines made it possible to determine that the use of an additive (“Nagro Boost”) provides a reduction in effective fuel consumption by 3-7% and does not increase harmful effects in the exhaust gases of internal combustion engines when the engine operates with load and screw characteristics. A conclusion is made about the perspectives of using these and other additives to increase the fuel efficiency and environmental friendliness of internal combustion engines.



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