Formation of harmful substances in emissions of ship diesel engines during the process of air-fuel mixture burning

Ecological conditions in sea and river water areas greatly depend on emissions of toxic components of ship diesel engines. The formation reason of harmful substances in exhaust gases is fuel burning. The effi-ciency of the burning process in cylinders of diesel engines is largely defined by the organization of a highly effective working process. Basic features of the combustion process in diesel engines are firstly connected with a way of mixture formation at fuel injection into the cylinder in the end of a compression step, and partially injection proceeds during the combustion period, and, secondly, with a much higher pressure and compression temperature. The level of concentration of harmful substances in exhaust gases of ship diesel engines is a con-sequence of the behavior quality of physical and chemical processes at preparation and combustion of the air-fuel mixture. It is necessary to pay a great attention to the factors, making direct impact on pre-flaming processes and combustion processes, in order to reduce combustion incompleteness and decrease in the concentration of toxic components in exhaust gases.