Аuthors: L. V. DENEZHKO, candidate of technical sciences, associate professor,
L. A. NOVOPASHIN, candidate of technical sciences, associate professor,
K. A. ASANBEKOV, candidate of technical sciences, associate professor,
Ural State Agricultural University (42 K. Libknehta Str., 620075, Ekaterinburg; tel: +7 (343) 371-33-63)
Abstract: Research questions of alternative fuels derived from renewable raw materials to replace petroleum fuels and improve the environmental performance of automotive engines are relevant. As a raw material for fuels attractive oilseeds, it’s particularly rapeseed. However, the high viscosity of rapeseed oil as compared with diesel fuel impedes its use in engines pure. So it is used in a mixture with low-viscosity components. As additives in rapeseed oil, reducing its viscosity mixture used diesel fuel, kerosene, gasoline, alcohol. Based on the thermal calculation defined duty cycle and performance of tractor diesel engine by using fuel mixtures based on rapeseed oil of different composition. A comparison of the resulting figures with traditional diesel fuel. Calorific value of the investigated mixed fuels is reduced compared with diesel. The theoretical amount of air required for the combustion of mixed fuels, requires less, especially for alcohol-rape mixtures, due to the increase in the proportion of oxygen in the constituent components studied mixed fuels. The maximum temperature of the operating cycle of a diesel engine changes, but it is lower than for diesel fuel. An increased engine power at 0.5–2.4 % compared with a diesel fuel using kerosene and alcohol and a minor reduction in diesel fuel at a dilution. Consumption of mixed fuels is significantly higher at 6–24 %, especially when using alcohol component.
Keywords: tractor, diesel, rapeseed oil, mixture calculations, the power efficiency, energy indicators.
