TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Improving the Lubricity of Gas Oils by Biodiesel Additivation
(Universitatea Petrol-Gaze din Ploieşti, Bd. Bucureşti 39, Ploieşti e-mail: dianapetre@upg-ploiesti.ro)
Vol LX • No. 4/2008
Diana Cursaru, Constantin Tănăsescu, Dorin Stănică- Ezeanu
Universitatea Petrol-Gaze din Ploieşti, Bd. Bucureşti 39, Ploieşti
e-mail: dianapetre@upg-ploiesti.ro

 Keywords   lubricity, bioDiesel, additives

 Abstract
This paper presents our investigations concerning the lubricity characteristics of the gas oils. Three gas oils produces by different processes (atmospheric distillation-DA, hydrofining-HF and catalytic cracking-CC) were used as raw materials for our research. The physical-chemical characteristics of gas oils (viscosity, density, STAS distillation, refractive index, composition and lubricity) were determinate before and after additivation with bioDiesel. The aims of our investigations were to establish relationships between the chemical composition of the Diesel fuels and friction and the improvement of the lubricity characteristics of gas oil by bioDiesel additivation.

 Rezumat
Studiul experimental prezintă investigaţiile noastre privind caracteristicile lubrifiante ale combustibililor bioDiesel. Īn acest scop au fost utilizate trei motorine obţinute din procese diferite (distilare atmosferică, hidrofinare şi cracare catalitică). S-au determinat caracteristicile fizico-chimice (vāscozitate, densitate, indicele de refracţie, distilare STAS, compoziţie şi lubricitate) ale motorinelor īnainte şi după aditivarea cu bioDiesel. Scopul studiului experimental a fost determinarea relaţiilor dintre compoziţia chimică şi lubricitate precum şi găsirea posibilităţilor de īmbunătăţire a caracteristicilor de lubrifiere prin aditivare cu biocombustibili.



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