4 research outputs found
DETERMINATION OF CO2 MASSES IN THE EXHAUST GASES OF THE MARINE DIESEL ENGINES
Currently, reducing CO2 emissions that contribute to the greenhouse effect is currently
under attention of the relevant international bodies. In the field of maritime transport, in 2011
International Maritime Organization (IMO) has taken steps to reduce emissions of CO2 from the
exhaust gases of marine diesel engines on ships, by imposing their energy efficiency standards.
In this regard, we conducted a laboratory study on a 4-stroke diesel engine naturally
aspirated by using to power it diesel and different blends of biodiesel with diesel fuel. The purpose
of the study was to determine the formulas for calculating the mass flow rates of CO2 from exhaust
gases’ concentrations experimentally determined. Determining the mass flow of CO2 is necessary
to calculate the energy efficiency coefficient of the ship to assess the energy efficiency of the board
of the limits imposed by the IMO
STUDY ON THE NITROGEN OXIDES EMISSIONS GENERATED BY THE DIRECT INJECTION DIESEL ENGINES RUNNING WITH BIODIESEL
Currently, research results on the use of mixtures of biofuels with fossil fuels to power diesel
engines are controversial in terms of reducing emissions of NO in the exhaust gases of diesel engines.
This diversity on the results is due to possibly different type of biodiesel used, the type of engine on which
the tests were carried out and the methods and conditions for obtaining these results.
Therefore research on biodiesel mixed with diesel is still a matter of study. In this regard, we conducted a
laboratory study on a 4-stroke diesel engine naturally aspirated, using different mixtures (10, 15, 20, 25,
30, 40 and 50%) of diesel with biodiesel made from rapeseed oil. The study results revealed that the NO
emissions of the mixtures used are lower than the same emissions produced when the engine is powered
with diesel. Also, the emissions of NO do not have a significant drop in the case of mixtures compared
with the diesel fuel