Testing of Selected Fuel Additive in Diesel Engine

Abstract The aim of this paper was to evaluate the influence of the fuel additive „VIF Super diesel additive winter mixture“ on the observed parameters of a vehicle with a diesel engine. The effect of the additive was investigated on Citroën C4 with a 1.6 HDi engine with a mileage of over 159,000 km. The testing of the effect of the additive took place in laboratory conditions on a cylindrical stool. The test vehicle’s exhaust gas treatment system included an exhaust gas recirculation, an oxidation catalyst, and a particulate filter. The power, energy (fuel consumption), and emission (NO x , k -value, smokiness in %) parameters of the vehicle were monitored without the additive, after adding the additive to the fuel, and then after driving 3600 km with the additive. We found a small increase in vehicle power after driving 3600 km with the additive by 1.86%, a slight reduction in fuel consumption by 4.2%, and a significant decrease in emission parameters. The NO x emissions were reduced by 9.96% after the first measurement with the additive and after the second measurement with the additive by 8.64%. The smokiness expressed by the absorption correction factor decreased after 3600 km with the additive by 35.48%, and the smokiness expressed as a percentage decreased by 33.8%. The overall impact of the additive on the power, energy, and emission parameters of the tested vehicle after analysis is evaluated as positive.