TY - JOUR
T1 - Combustion characteristics and engine emissions of a diesel engine fueled with diesel and treated waste cooking oil blends
AU - Abu-Jrai, A.
AU - Yamin, Jehad A.
AU - Al-Muhtaseb, Ala'a H.
AU - Hararah, Muhanned A.
N1 - Funding Information:
Authors gratefully acknowledge the financial support of the Scientific Research Committee at Al-Hussein Bin Talal University and for the technical support provided by the Department of Mechanical Engineering at the University of Jordan.
PY - 2011/8/1
Y1 - 2011/8/1
N2 - In this study, waste cooking oil from restaurants was used to produce a renewable and sustainable biodiesel through transesterification process. The Treated Waste Cooking Oil (TWCO) fuel produced has shown very promising chemical and physical properties; most notably; cetane number (∼49) and sulphur content (8mg/kg). The combustion of conventional diesel and Treated Waste Cooking Oil (TWCO)-diesel blend (50/50 by volume; shown as TD50) was examined at different engine conditions. The combustion of TD50 resulted in a considerable reduction in the smoke opacity and unburnt hydrocarbons associated with an increase in the CO2 and NOx emissions due to unintentional advance of fuel injection timing, caused by the higher bulk modulus of TD50 fuel. Results indicated an increase in brake specific fuel consumption with simultaneous reduction in the engine thermal efficiency compared to conventional diesel. The lower smoke opacity in the case of TD50 fuel assists NOx reductions by exploiting the higher EGR tolerance of TD50 fuel. Thus, a more encouraging NOx-smoke tradeoff may be selected to reduce both NOx and smoke. The effect of EGR in NOx reduction was more noticeable with TD50 than conventional diesel fuel.
AB - In this study, waste cooking oil from restaurants was used to produce a renewable and sustainable biodiesel through transesterification process. The Treated Waste Cooking Oil (TWCO) fuel produced has shown very promising chemical and physical properties; most notably; cetane number (∼49) and sulphur content (8mg/kg). The combustion of conventional diesel and Treated Waste Cooking Oil (TWCO)-diesel blend (50/50 by volume; shown as TD50) was examined at different engine conditions. The combustion of TD50 resulted in a considerable reduction in the smoke opacity and unburnt hydrocarbons associated with an increase in the CO2 and NOx emissions due to unintentional advance of fuel injection timing, caused by the higher bulk modulus of TD50 fuel. Results indicated an increase in brake specific fuel consumption with simultaneous reduction in the engine thermal efficiency compared to conventional diesel. The lower smoke opacity in the case of TD50 fuel assists NOx reductions by exploiting the higher EGR tolerance of TD50 fuel. Thus, a more encouraging NOx-smoke tradeoff may be selected to reduce both NOx and smoke. The effect of EGR in NOx reduction was more noticeable with TD50 than conventional diesel fuel.
KW - Biodiesel
KW - CO
KW - EGR
KW - HC
KW - NO
KW - Waste cooking oil
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U2 - 10.1016/j.cej.2011.05.078
DO - 10.1016/j.cej.2011.05.078
M3 - Article
AN - SCOPUS:79960972992
SN - 1385-8947
VL - 172
SP - 129
EP - 136
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
IS - 1
ER -
