EFFECTS OF MINERAL OIL-DIESEL FUEL BLENDS ON EXHAUST EMISSIONS IN A DIESEL ENGINE

Mainly dating from the midst of the year 2007, various items have been sold in tins for using in diesel vehicles instead of diesel fuel; including viscous base oil at first, with the name of Oil-NO: 10. There is strong evidence that these types of non-standard fuels have been still utilized with the various names at diesel engines in our country. In this study, by using diesel fuel and mineral oil (SAE10W and SAE5W) at various rates–mixtures of diesel fuel, exhaust emissions in a diesel engine were experimentally analyzed. When engine speed increased, changes in values of exhaust emissions were determined with the relevant mixtures at various rates. The experiments were carried out with a single-cylinder, direct injection, air cooled diesel engine under various speed and various load conditions. When these fuels compared to diesel fuel, they did not show any important differences from diesel fuel in terms of engine performance. When compared the fuel mixtures to the D2 fuel, the CO, NOx and SOx values were high, the UHC (unburned hydrocarbon) emissions were partly low for mixture fuels. This showed have significantly negative effects on environmental pollution.