Performance and Emission Characteristics of Tylosema Esculentum Biodiesel in a Diesel Engine： An Experimental Investigation  

作　　者：Jerekias Gandure Clever Ketlogetswe Abraham Temut 

机构地区：[1]Mechanical Engineering Department, University of Botswana, Gaborone P/Bag UB 0061, Botswana [2]Chemical and Mining Engineering Department, University of Dar es Salaam, Dar es Salaam P. O. Box 35131, Tanzania

出　　处：《Journal of Energy and Power Engineering》2014年第1期50-58,共9页能源与动力工程（美国大卫英文）

摘　　要：Biodiesel derived from indigenous feed stocks such as Tylosema esculentum kernel oil is deemed a feasible alternative to petroleum diesel for the diesel engine. This paper presents results of investigation of performance and emissions characteristics of diesel engine using Tylosema biodiesel. In this investigation, Tylosema biodiesel was prepared, analyzed and compared with the performance of petroleum diesel fuel using a single cylinder compression ignition diesel engine. The specific fuel consumption, engine torque, engine brake power, hydrocarbons, carbon monoxide and carbon dioxide were analyzed. The tests showed a decrease in engine brake power and torque with increase in engine load, while specific fuel consumption showed an increasing trend with maximum variation of 33% between the two fuels at engine load of 90%. Emission levels of hydrocarbons, carbon monoxide and carbon dioxide showed an increasing trend with increase in load for both fuels. Tylosema biodiesel produced significantly lower concentrations of hydrocarbons than petroleum diesel, while levels of carbon dioxide and carbon monoxide were largely comparable to those of petroleum diesel. Soot production from combustion ofTylosema biodiesel was found to be approximately 98% lower than that from combustion of petroleum biodiesel, demonstrating insignificant contribution to environmental pollution.

关 键 词：Tylosema BIODIESEL performance emissions. 

分 类 号：U464.172[机械工程—车辆工程] TK428.9[交通运输工程—载运工具运用工程]