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Title: Emission reduction from a diesel engine fueled by pine oil biofuel using SCR and catalytic converter
Authors: Vallinayagam, R.
Vedharaj, S.
Yang, W.M. 
Saravanan, C.G.
Lee, P.S. 
Chua, K.J.E. 
Chou, S.K. 
Keywords: Catalytic converter
Diesel engine
Pine oil
Issue Date: Dec-2013
Citation: Vallinayagam, R., Vedharaj, S., Yang, W.M., Saravanan, C.G., Lee, P.S., Chua, K.J.E., Chou, S.K. (2013-12). Emission reduction from a diesel engine fueled by pine oil biofuel using SCR and catalytic converter. Atmospheric Environment 80 : 190-197. ScholarBank@NUS Repository.
Abstract: In this work, we propose pine oil biofuel, a renewable fuel obtained from the resins of pine tree, as a potential substitute fuel for a diesel engine. Pine oil is endowed with enhanced physical and thermal properties such as lower viscosity and boiling point, which enhances the atomization and fuel/air mixing process. However, the lower cetane number of the pine oil hinders its direct use in diesel engine and hence, it is blended in suitable proportions with diesel so that the ignition assistance could be provided by higher cetane diesel. Since lower cetane fuels are prone to more NOX formation, SCR (selective catalyst reduction), using urea as reducing agent, along with a CC (catalytic converter) has been implemented in the exhaust pipe. From the experimental study, the BTE (brake thermal efficiency) was observed to be increased as the composition of pine oil increases in the blend, with B50 (50% pine oil and 50% diesel) showing 7.5% increase over diesel at full load condition. The major emissions such as smoke, CO, HC and NOX were reduced by 70.1%, 67.5%, 58.6% and 15.2%, respectively, than diesel. Further, the average emissions of B50 with SCR and CC assembly were observed to be reduced, signifying the positive impact of pine oil biofuel on atmospheric environment. In the combustion characteristics front, peak heat release rate and maximum in-cylinder pressure were observed to be higher with longer ignition delay. © 2013 Elsevier Ltd.
Source Title: Atmospheric Environment
ISSN: 13522310
DOI: 10.1016/j.atmosenv.2013.07.069
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