Effect of E85 fuel on performance parameters, fuel consumption and engine efficiency – Škoda Fabia 1.2 HTP
Czech University of Life Sciences Prague, Faculty of Engineering, Kamycka 129, 16521 Prague – 6 Suchdol, Czech Republic; e-mail: cedikj@tf.czu.cz, pexa@tf.czu.cz, kotekm@oikt.czu.cz, janhromadko@tf.czu.cz Abstract: This article deals with the effect of the E85 fuel on the performance parameters, specific fuel consumption and engine efficiency of a spark ignition engine Škoda Fabia 1.2 HTP and it is related to the article Effect of E85 Fuel on Harmful Emissions – Škoda Fabia 1.2 HTP. The measurement was performed on a test bench using a test cycle that simulates real traffic conditions and simultaneously the external rotation speed characteristics were measured. Three variants were chosen for burning E85 fuel. The first one was the usage of the E85 fuel without modifications on the engine control unit (variant 1 – E85), the second one was the usage of the E85 fuel with prolonged time of the injection by 28% (variant 2 – E85+) and the last third variant was the reference fuel petrol Natural BA95 (variant 3 – N95) for comparison. The results of the measurement showed a non-negligible decrease of the engine torque and power for both variants using E85 fuel. Further, there was a considerable increase of the specific fuel consumption for variants 1 and 2 (E85, E85+). Engine efficiency for the driving cycle increased for variants 1 and 2 (E85, E85+) approximately by one percent. For the external rotation speed characteristics the engine efficiency increased approximately by 5% for variant 1 – E85 and approximately by 2% for variant 2 – E85+. Key words: E85 fuel, performance parameters, fuel consumption, engine efficiency.INTRODUCTION
Abstract:
The increase in the usage of bioethanol as a fuel in Europe is significant (up to15% annually) (Beran, 2011). The reason could be the European Parliament and the European Council, which adopted the so called action plan concerning with the issue of biofuels in transport. In the action plan the strategy for achieving the planned 20% substitution of conventional liquid motor fuels with alternative fuels by 2020 is defined (Šebor et al., 2006). Furthermore according to the European Directive 2009/28/EC on the promotion of the use of energy from renewable sources and amending and subsequent repealing directives 2001/77/EC and 2003/30/EC the target is a 20% share of energy from renewable sources and a 10% share of energy from renewable sources in transport (EU Directive 2009/28/EC; Hromádko et al., 2009; Beran, 2011; Pirs & Gailis, 2013). The second reason could be the dependence of Europe on the imported crude oil products. European OECD countries were dependant on the imported crude oil in the year 2007 from about 65% and by 2030 the dependence could increase up to 83%. The transport in Europe is dependant on the crude oil products from about 98% (Šebor et al., 2006; IEA, 2009; Gnansounou, 2010). France is the major consumer of307
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2010), bioethanol in Europe with a 5.41% share of bioethanol on the market (in Sweden it is 5.14%) (Gnansounou