Technical Paper
The Influence of Exhaust Gases Dissolved in Diesel Oil on Fuel Spray Particulary Parameters
2007-04-16
2007-01-0488
The Institute of Combustion Engines and Transport has developed a concept of fuelling diesel engines with an improved mechanism of spray. To facilitate the spray, and consequently the combustion process, air or exhaust gas was dissolved in diesel oil. The gases mixed with diesel oil formed a solution, which induced non-equilibrium state owing to its effervescence. As a result, the gaseous phase spontaneously released from the solution throughout the whole volume. The paper presents the results of observations and measurements of the fuel injection into the open chamber recorded with AVL 513D Engine Video System. The injection process has been realized with a common rail system, where the conventional mechanism of fuel atomization has been enhanced by the presence of gas in the fuel. The solution of gas and fuel was considered separately as non-saturated, saturated and supersaturated (in the last case, some amount of gas remained undissolved in the fuel).