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The main pollutants contributed by internal combustion engines are CO, NOx unburned hydro-carbons (HC) and particulate emissions. In addition to this, all fuel burning systems emit CO2 in large quantities and this is concerned with the Green House Effect which is going to decide the health of earth. In theory, on average, Diesel engines emit 20% less CO2 than gasoline engines, but, depending to the fuel consumption, or engine regime, can reach high values. The paper presents researches on exhaust gases quality for an experimental single cylinder Diesel engine. The tests were made on an AVL single cylinder test bed for single cylinder engine (AVL 510 cc Single Cylinder Engine Type 5402). The quality of the exhaust gases, and the amount of CO2 produced for different regimes and injection strategies, for this engine, were analyzed and compared with the theoretical principles. In conclusion, different CO2 reduction strategies were compared, in order to find the optimal solutions.

Carbon dioxide; Diesel; Combustion