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2 ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
1 Teka Commission of Motorization and Power Industry in Agriculture

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Analysis of studies of lake sapropel properties

100%

Didukh V. , Tomyuk V. , Onyukh Y. , Lalak-Kańczugowska J.

nr 3

Angle of injection impact on the combustion proces in a compression-ignition engine

88%

Łagowski P. , Kurczyński D. , Wcisło G. , Pracuch B. , Tomyuk V.

tom Vol. 7, No 4

29--36

The article presents the impact of hydrocarbon fuel angle of injection on heat emission characteristics in a compression - ignition AD3.152 engine. The angle of injectionhas a significant impact on the primary engine operating parameters and combustion process indicators, which include the proportion of combustion which occurs according to kinetic and diffusion models, heat emission rate and the combustion process duration. The characteristics describing emission of a relative heat quantity were determined on the basis of an analysis of actual, indicator diagrams averaged over 100 runs, under the assumption that the combustion process ends by the time the exhaust valve opens. During the test, the engine operated according to an external speed characteristic. Tests were carried out for three fuel angles of injection: 13, 17 and 21 crankshaft rotation degrees.

Determining the effect of the addition of temperature on the rheological properties of biofuels FAME and RME

75%

Wcisło G. , Pracuch B. , Łagowski P. , Kurczyński D. , Leśniak A. , Tomyuk V.

tom Vol. 8, No 4

3--7

The aim of the study was to compare the impact of dynamic viscosity of two biofuels. One was a mixture of 50% (m / m) SBME and 50% (m / m) RME of own production. The mixture was conventionally called FAME. The second biofuel was commercial RME from a gas station. Dynamic viscosity as a function of temperature from -20 to 50oC was tested. The main device used at the measuring stand was ReolabQC rheometer manufactured by a German Anton Paar GmbH company. Dynamic viscosity especially grew rapidly after cooling biofuels to temperatures below -5°C. Dynamic viscosity FAME biofuels produced from pure vegetable oil (soybean oil and rapeseed oil) in a temperature range of 50 to -20°C has a value of c.a. 9 to 53[mPa∙s]. Dynamic viscosity of Biofuel FAME produced from mixtures of vegetable oils it was on average lower by about 1 to 8 [mPa∙s] of RME shopping from a gas station.