DETERMINATION OF CONCENTRATIONS OF POLLUTANTS IN EXHAUSTS OF HANGKAI T6 OUTBOARD ENGINE AT BREAK-IN MODE AND DURING DAILY OPERATION

Abstract

Active development of water recreation market leads to a noticeable increase in the number of motorized recreational boats and, as a consequence, to an aggravation of their technogenic impact on the environment. New outboard motors should go through a fairly long break-in period to allow the moving parts to better break in. During the mode, on average, twice as much engine oil is added to the fuel as during daily operation, and this affects the concentration of pollutants in the exhausts. The results of the experimental study of the HANGKAI T6 2-stroke gasoline outboard motor, have shown that the content of CO, CO2 and CH in the exhausts has increased, respectively, by 19,0–62,8 %, 32,3–60,7 % and 18,1–64,7 % in the break-in mode with a fuel-oil ratio 25:1 compared to daily operation mode with a fuel-oil ratio 50:1.