Poster Presentation

Prof. Jerzy Merkisz, Poznan University of Technology, Poland
Dr. Wladyslaw Kozak, Poznan University of Technology, Poland
Dr. Maciej Bajerlein, Poznan University of Technology, Poland
Dr. Jaroslaw Markowski, Poznan University of Technology, Poland

The Institute of Internal Combustion Engines and Transportation has developed a concept of fuelling diesel engines with an improved mechanism of spray. The proposed novelty value of spraying consists in dissolving gas in diesel fuel. The effervescence of the fuel mixed with gases facilitates spraying. In the non-equilibrium states of the solution formed as a result of dissolving gas in a liquid, the gaseous phase is spontaneously released from the solution. This process has a volumetric character and at the appropriate kinetics it is strong enough to be accompanied by the effervescence (bubbling) of the liquid. At the moment, widespread researches are made in order to evaluate the practical application of the concept in injection systems. The article presents the results of tests on the impact of oxygen dissolved in diesel fuel on combustion in diesel engines. The tests were carried out in the piston head of an engine equipped with a toroidal combustion chamber and direct injection. During the tests the following factors were measured: the main indicators of motor operation, the range of pressure values in the combustion chamber and before the injector, emissions of CO2, HC, CO, NOx, PM. Furthermore, the article shows the results of tests at two different values of speed of rotation. The conclusions include an assessment of the emission factor in engines fuelled with the oxygen-diesel fuel solution in comparison to the conventional engine fuelling with pure diesel fuel.

This abstract is supplemented by a PDF, which can be viewed here.

Poster presentation: Future powertrain solutions