The effect of injection pressure and fuel viscosity on the spray characteristics of biodiesel blends injected into an atmospheric chamber

• Published in: Journal of mechanical science and technology 2012, 26(9), , pp.2941-2947
• Main Authors: Ghurri, Ainul, Kim, Jae-Duk, Kim, Hyung Gon, Jung, Jae-Youn, Song, Kyu-Keun
• Format: Article
• Language: English
• Subjects: Applied sciences; Atmospherics; Control; Correlation; Dynamical Systems; Energy; Energy. Thermal use of fuels; Engineering; Engines and turbines; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc; Exact sciences and technology; Fuels; Industrial and Production Engineering; Internal combustion engines: gazoline engine, diesel engines, etc; Mathematical analysis; Mechanical Engineering; Mechanical engineering. Machine design; Penetration; Sprayers; Sprays; Vibration; Viscosity; 기계공학
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-012-0703-1

An experimental study was conducted to examine the effect of injection pressure and fuel type on the spray tip penetration length and the angle of spray injected into atmospheric chamber. The objective of the present study is to formulate empirical correlations of the spray tip penetration and the spray angle for non-evaporative condition. The experiment was performed by a common rail type high-pressure injector for the diesel engine at the injection pressure 40∼100 MPa and four different fuels (D100, BD25, BD45, and BD65). The results showed that the biodiesel content increased the spray tip penetration and decreased the spray angle. The correlation of spray tip penetration is expressed for each region before and after spray break-up time in terms of injection pressure, fuel viscosity and time after start of injection. The correlation is also obtained for spray angle equation terms of injection pressure and fuel viscosity.