Study to Establish the Relationship Between Fuel Injection Parameters and Exhaust Emission Content of Fishing Vessels’ Diesel Engines to Diagnose the Technical State

Abstract

Fuel injection parameters of diesel engines are essential. It directly affects the process of forming the combustion mixture, fuel combustion, and emission formation. The fuel injection pressure with the pressure at the end of the compression stroke in the engine cylinder at the time of fuel injection is worth noting. If the above parameters are reduced compared to the technical requirements, the combustion process is incomplete, and soot emissions increase. On that basis, the article studies the relationship between fuel injection parameters and exhaust emissions by simulation and experimental methods, through which it is possible to recognize emission results for the diagnosis technical state of the fuel injection system and the group that encloses the engine’s combustion chamber. Research results on the 6CHE Yanmar diesel engines of the fishing vessels at zero load conditions show that. When soot emissions increase by more than 20%, the fuel injection pressure is reduced compared with technical requirements. The fuel injection system and the group that encloses the combustion chamber need to be maintained on time to prevent damage incidents that may occur and to ensure the safety of people and fishing vessels when operating at sea for a long time.