K e y w o r d s: diesel fuel, pure plant oil fuel, tractor engine power, fuel consumption. A b s t r a c t The paper summarizes results of tests of John Deere agricultural tractor type 6830 fueled with pure raps oil. The measurements were performed using an electro-magnetic brake connected to the tractor with a power transfer shaft (WOM). Specification of the engine fueled with pure raps oil was drawn up during the tests and it was compared with the engine fueled with diesel. The main conclusions include identification of a power drop of the engine fueled with the raps oil by an average of 10 % in comparison with the same engine fueled with diesel and increase of fuel consumption per kWh by 15%. The identified drop of power had no impact of...
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