Comparison of the effect of gasoline – ethanol E85 – butanol on the performance and emission characteristics of the engine Saab 9-5 2.3 l turbo
¹Faculty of Engineering, CULS-Czech University of Life Sciences Prague, Kamycka 129, 16521 Prague 6, Czech Republic; *Correspondence: firstname.lastname@example.org 2Faculty of Agrobiology, Food and Natural Resources, CULS-Czech University of Life Sciences Prague, Kamycka 129, 16521 Prague 6, Czech Republic
Due to the increasing environmental demands of the European Union for reducing emissions, it is necessary to utilize biofuels at the expense of the conventional fossil fuel BA95. Biofuels in spark-ignition engines usually use ethanol at a ratio of up to 85% to 15% of the conventional fuel BA95. Such a fuel is known as E85. Butanol also has very similar properties to ethanol. Ethanol is a higher alcohol. For comparison, ethanol and butanol fuels with conventional fuels were chosen for the vehicle Saab 9-5, turbo-charged 2.3l. This vehicle is completely adapted to operation on ethanol fuel (broad adaptation control unit, suitable sealing elements, fuel pump, etc.). The engine performance and emissions were monitored when operating on these fuels as compared to the conventional fuels BA95. It can be stated that the engine reached higher performance parameters when operating on ethanol and butanol fuels. This is due to the fact that the control unit increases the fuel supply during operation on biofuels (lower calorific value of fuel). There is no lean combustion and the possible damage to the engine during long-term operation. From the perspective of bootable showing, butanol fuel has worse parameters compared to ethanol fuel and conventional fuels.