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Effect of E85 fuel on performance parameters, fuel consumption and engine efficiency - Škoda Fabia 1.2 HTP

2014; Estonian Agricultural University; Volume: 12; Issue: 2 Linguagem: Inglês

2228-4907

Jakub Čedík, Martin Pexa, Martin Kotek, J. Hromádko,

Advanced Combustion Engine Technologies

This article deals with the effect of the E85 fuel on the performance parameters, specific fuel consumption and engine effic iency of a spark ignition engine Skoda Fabia 1.2 HTP and it is related to the article Effect of E85 Fuel on Harmful Emissions - Skoda 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+.