بررسي تجربي تاثير مشخصه هاي سوخت ديزل بر متغيرهاي احتراقي، عملكردي و آلايندگي يك موتور ديزل

An Experimental Investigation of the Effect of Fuel Properties on Combustion, Performance and Emission Characteristics of a DI Diesel Engine

This study investigates the effects of sulfur contents and Cetane number (CN) of dies el fuel on combustion, performance and exhaust emission characteristics of a direct injection (DI) diesel engine. The engine experiments were run at 8-modes steady-state emission test procedure (ECE-R96). To evaluate the influence of fuel properties on engineʹs emissions and performance characteristics, seven different test fuels were prepared: three fuels with different sulfur contents in the ranges of 50 ppm, 500 ppm and 3500 ppm and four fuels with a different cetane number that changes from 47 to 57. Experimental results indicate that the sulfur level of the diesel fuel has a significant effect on all regulated emissions, especially on PM. Also, the obtained results for fuels with different cetane numbers show that NOx emissions are reduced and PM emissions are increased when cetane number increases.