the spray characteristics of the fuel greatly influence emissions from diesel engines. spray development plays a vital role in improving the combustion and emission characteristics of fuel because it directly affects the air- fuel mixture formation. the spray characteristics of fuel mainly depend on fuel injection process, fuel density, fuel viscosity, ambient pressure and temperature. among th...

A comparative experimental and numerical study is conducted to establish the significance of the use of single-component over multi-component representatives of biodiesel, diesel and their blend for predicting spray tip penetration. Methyl oleate and methyl laurate are used as single-component representative fuels for biodiesel. The pure components n-heptane, n-dodecane and n-tetradecane are us...

In recent days, current research is going in alternative fuels due to increase in global warming and pollution in all over the world and also very stringent emission norms. In this way, the study on spray progress plays an important role in improving complete combustion and emission of fuel, because it is directly affects the air-fuel mixture formation. The macroscopic spray characteristics of ...

The macro characteristics and configurations of induced shock waves of the supersonic sprays are investigated by experimental methods. Visualization study of spray shape is carried out with the high-speed camera. The macro characteristics including spray tip penetration, velocity of spray tip and spray angle are analyzed. The configurations of shock waves are investigated by Schlieren technique...

A combination of high pressure injection and small orifices will be one of strategies to achieve the lean combustion. But the small orifice tends to increase soot under high load conditions because of short spray tip penetration. For this reason, a cluster concept was proposed in this study. The difference of the cluster nozzle is that the cluster has several groups of orifices; each group cons...

Spray characteristics have an important role in improving the quality of combustion compression engines. This study analyzes effect ambient temperature on spray including tip penetration, angle and velocity spray. The research method uses experimental with variations 60 o C, 80 100 C controlled using a thermocouple pressure 0.3 MPa. composition fuel diesel (diesel 100%), B30 (30% biodiesel), B1...