Investigations on Performance of CI Engine with Waste Palm Oil Biodiesel-Diesel Blends Using Response Surface Methodology

Abstract

The present work is aimed at experimentally investigating of the single-cylinder water cooled naturally aspirated direct injection diesel engine operated with waste palm oil methyl ester (WPOME) blended with mineral diesel. WPOME prepared from waste palm oil through transesterification process was used as an alternate fuel in this work. Input parameters considered for these investigations were compression ratio (CR), blend and load on engine. Compression ratios considered for this analysis were 15, 16, 17 and 18. A statistical tool known as design of experiments (DoE) based on response surface methodology (RSM) was used to design experiments. Output performance parameters brake specific energy consumption (BSEC), brake thermal efficiency (BTE), exhaust gas temperature (EGT), and smoke opacity (OP) were predicted using the resultant models of RSM. Optimal input parameters were analyzed for better performance and lower emissions using the desirability approach of RSM. At desirability of 0.75 optimal input parameters CR 18, Load 2.5 kW and blend of B40 responses were BTE of 27.15, BSEC of 13.93 MJ/kg, EGT of 207 {\textdegree}C and OP of 27 HSU.