Jofanka Aviliani Septin

Universitas Jember

Intan Hardiatama

Universitas Jember

Widjonarko Widjonarko

Universitas Jember

Franciscus Xaverius Kristianta

Universitas Jember

Andi Sanata

Universitas Jember

DOI: https://doi.org/10.19184/rotor.v18i2.60791 

ABSTRACT 

Biodiesel serves as an alternative fuel to substitute for petroleum fuels, which are progressively becoming scarce. The production of nyamplung seeds surpasses that of rubber seeds and castor beans, which possess the potential to serve as raw materials for biodiesel. This study seeks to ascertain the influence of injection temperature on spray characteristics. The injection temperatures used are 70oC, 90oC, 110oC and the injection pressure is 15 MPa and the ambient pressure is 2 bar. The research results showed that as the temperature increased, the spray tip penetration became smaller, the spray angle decreased, and the mean diameter value decreased. This is caused by biodiesel and viscosity decreasing. The lowest spray tip penetration occurs at B20 with a temperature of 110oC of 206.51 mm. The largest spray angle occurs at B20 with a temperature of 110oC. The smallest sauter mean diameter is found in biodiesel with a composition of 100% at a temperature of 110oC of 326.043 µm.

Keywords: biodiesel, nyamplung Oil, spray

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