Comparison tests of fossil diesel fuel and TBK-Biofuel

Abstract

The objective of our measurements was to determine the most important properties of the TBK bio-diesel with relevance to ICE use and to evaluate its effects on the power output, fuel consumption, exhaust emissions of a CI engine in comparison with commercial diesel fuel. Thus the standardized diesel fuel was used as reference fuel, and it was compared with the newly developed biofuel called TBK. Based on our measurements its most important physical and chemical properties and its effects on combustion and exhaust gas emissions in ICE are presented in detail. Emissions mean on the one hand components which are regulated in the emission directives of the European Union for type-approval of vehicles or engines, and on the other hand, a detailed analysis of hydrocarbons. The evaluation was made on the basis of engine test bench measurements realized on a city bus engine typical for the Hungarian bus fleet.