Fuel and Combustion

Fuel and Combustion

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

Authors
Seyed Alireza Khabbaz 1
Rahim Khoshbakhti Saray 2
رئوف مبشری 3
1 Motorsazan CO., Iranian Tractor Manufacturing Company
2 Department of Mechanical Engineering, Sahand University of Technology،Tabriz ،Iran
3 University of Sussex, UK – School of Science and Technology
Abstract
This study investigates the effects of sulfur contents and Cetane number (CN) of diesel 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 engine’s 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.
Keywords
Cetane number
Fuel properties of the diesel engines
Exhaust emission
Diesel engine
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