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Atomization and Sprays
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ISSN Online: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v21.i1.60
pages 87-105

How Vegetable Oils and Its Derivatives Affect Spray Characteristics in CI Engines- A Review

Soo-Young No
Dept. of Biosystems Engineering, Chungbuk National University, South Korea

ABSTRACT

Even though there are so many articles related to the review on production of biodiesels from edible and in-edible vegetable oils, performance and exhaust emissions of compression ignition(CI) engines fuelled with vege-table oil and its derivatives, the effect of vegetable oils and its derivatives on spray characteristics was not con-sidered in those reviews. High viscosity of vegetable oils and its derivatives is one of the main problems in the application to CI engine as substitute fuel. Therefore, how vegetable oils and its derivatives affect spray charac-teristics, mainly related to fuel viscosity, in CI engines fuelled with vegetable oils and its derivatives is the main concern in this study. Of edible vegetable oils, soybean, rapeseed and palm oils were mainly investigated. Of inedible vegetable oils, jatropha, karanja, rubber seed and used cooking oils were main concern on the research of the spray characteristics in CI engine. Spray angle, spray penetration and liquid phase penetration were mainly examined among the macroscopic spray characteristics and Sauter mean diameter was only investigated among the microscopic spray characteristics. It was found that so many different definitions of spray angle were suggested by various researchers. The empirical correlation, which is different with existing ones, for the calculation of spray penetration for biodiesel in the early stage of injection was newly suggested. The original vegetable oil for the production of biodiesel affects the spray characteristics and quality of atomization.


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