Thermal Analysis of Diesel Engine Cylinder Head Deposits while Operated by Diesel-Water Emulsion Fuel 18ICES/014
Authors
M.G. Saifullah - University of Malaya
H.H. Masjuki - University of Malaya
M. Husnawan - University of Malaya
M.S. Faizul - University of Malaya
T.M.I. Mahlia - University of Malaya
Abstract
Four samples of engine carbon deposits derived from diesel fuel in emulsions containing 0; 5; 10 and 15% vol water were subjected to thermogravimetric analysis (TGA/DSC) in air medium. The TGA system was used, allowing rapid exposure of deposit samples to the action of hot gases thus simulating the actual process occuring inside the combustion chamber. The deposit build up processes were performed on a YANMAR single-cylinder direct-injection dieselengine for a period of 25 hours for each set of test fuel. These results were then correlated with elemental analysis as well as infared spectra for microscopic observations. It has been found that as the water increases in fuel, less aromatic and less reactive of deposits would be formed.