Sakulin

A feasibility of the four-stroke diesel engine YANMAR L-100C running under condition of the super-high compression ratio was investigated numerically in this paper. Computational model was created in the simulation modeling system “Albea” which was designed at the department of ICE of the Ufa State Aviation Technical University. Dependencies of brake efficiency on the different values of compression ratio of the investigated engine were calculated and presented in this work. It was discovered that growth of the compression ratio from 19.3 up to 30 led to the significant decrease in brake efficiency. In the meantime, decreasing of the compression ratio from 19.3 down to 12 – 15 led to the growth of brake efficiency, especially at partial loads.