title: Factorial analysis of diesel engine performance using different types of biofuels.
abstract: In this study, several bio-source-fuels like fresh and waste vegetable oil and waste animal fat were tested at different injector pressures (120, 140, 190, 210 bar) in a direct-injection, naturally aspirated, single-cylinder diesel engine with a design injection pressure of 190 bar. Using 2k factorial analysis, the effect of injection pressure (Pi) and fuel type on three engine parameters, namely, combustion efficiency (etac), mass fuel consumption (mf), and engine speed (N) was examined. It was found that Pi and fuel type significantly affected both etac and mf while they had a slight effect on engine speed. Moreover, with diesel and biodiesels, the etac increased to a maximum at 190 bar but declined at the higher Pi value. In contrast, higher Pi had a favorable effect on etac over the whole Pi range with all the other more viscous fuels tested. In addition, the mass fuel consumption consistently decreased with an increase in Pi for all the fuels including the baseline diesel fuel, with which the engine consistently attained higher etac and higher rpm compared to all the other fuels tested.
authors.affiliation: Department of Mechanical Engineering, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan. gtash@just.edu.jo
authors.forename: Ghassan M
authors.initials: GM
authors.lastname: Tashtoush
authors.forename: Mohamad I
authors.initials: MI
authors.lastname: Al-Widyan
authors.forename: Aiman M
authors.initials: AM
authors.lastname: Albatayneh
mesh_terms: D000273:Adipose Tissue; D000818:Animals; D004736:Energy-Generating Resources; D005163:Factor Analysis, Statistical; D005742:Gasoline; D018986:Motor Vehicles; D010938:Plant Oils; D011312:Pressure; D014866:Waste Products
chemical_list: D005742:Gasoline; D010938:Plant Oils; D014866:Waste Products