Abstract

The mechanism of formation toxic components in exhaust gases during oxidation and combustion of fuel in marine internal combustion engines is considered. The system of ship engine by-pass exhaust gases 6L20 Wartsila has been observed. Upon experimental results it has been stated that the by-pass exhaust gases usage favor the ecological parameters of ships engine operation modes – by this at the range of exploitation load 0.55 … 0.85 % from nominal power the nitrogen oxide concentration in exhaust gases is decreased on 1.32 ... 12.97 %, but the specific effective fuel oil consumption is increasing to 4.13 %.

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