AI Summary & Key Takeaways
AI InsightWhile the combustion durations of biodiesel fuels were close to each other, PBDF’s combustion durations were relatively higher at all engine loads tested.
📌 3 Key Takeaways
Abstract
Normal 0 false false false TR X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Normal Tablo"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-ansi-language:TR;} In this study, biodiesel fuels were produced from waste chicken fat and waste fleshing oil with high free fatty acids, and those were tested in a common rail-DI diesel engine at constant engine speed of 2000 rpm and five different engine loads (50, 75, 100, 125 and 150 Nm). The effects of biodiesel fuels on the engine’s performance and combustion characteristics were investigated in comparison with petroleum-based diesel fuel (PBDF) which was the reference fuel. As compared to PBDF, brake specific fuel consumptions of biodiesels were higher but their thermal efficiencies were lower. The differences between performance characteristics became more pronounced with increasing engine load. In-cylinder pressures which were attained in pilot injection were higher with PBDF at all engine loads, while higher pressures were attained in main injection with biodiesel fuels at 125 and 150 Nm. The most critical differences between in-cylinder pressures and heat release rates were found at 125 Nm. The ignition delays varied with engine load; but for all test fuels it usually increased with engine load. While the combustion durations of biodiesel fuels were close to each other, PBDF’s combustion durations were relatively higher at all engine loads tested.