4.3 Article

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

Journal

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
Volume 26, Issue 9, Pages 2941-2947

Publisher

KOREAN SOC MECHANICAL ENGINEERS
DOI: 10.1007/s12206-012-0703-1

Keywords

Common rail; Spray angle; Spray correlation; Spray tip penetration

Funding

  1. Chonbuk National University

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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 similar to 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.

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