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Substantiation of Fuel Consumption Rates of a Harvester

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K.P. Rukomojnikov, V.O. Kuptcova

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The research purpose was to substantiate the parameters of diesel fuel consumption during felling by the feller-delimber-slasher Silvatec 8266TH in the forest area of the Mari El Republic. The goal was achieved by conducting the experimental tests using the volumetric procedure of filling the machine tank at the end of the operating cycle. The experimental research was accompanied by fixation of the diameters and volumes of the trees cut down. After cutting down each of these groups of trees, the machine was stopped. The fuel tank was filled to the filler pipe. Each time the researchers fixed the fuel volume filled. Processing of the experimental data allowed us to obtain a regression model. This model characterizes the average fuel consumption for various tree diameters. Analysis of the obtained solution made it possible to find out that the average fuel consumption of a Silvatec 8266TH harvester working in the forest areas of the scientific and experimental forestry of the Volga State University of Technology depends on the average diameter of the cut trees. The multiple coefficient of determination (R2) of the resulting non-linear model was 0.73. The obtained mathematical dependence can be used by timber enterprises for the approximate rapid calculation of the consumption rates in the absence of running standards. Calculations can be carried out to substantiate the volume of the consumed fuel and to calculate the project cost of harvested products in the development of new forestry enterprises and new forest areas.


K.P. Rukomojnikov, Doctor of Engineering, Assoc. Prof.; ResearcherID: N-6961-2019,
V.O. Kuptcova, External PhD Student; ORCID:


Volga State University of Technology, pl. Lenina, 3, Yoshkar-Ola, Mari El Republic, 424000, Russian Federation; e-mail:,


feller-delimber-slasher, logging, regression model, fuel consumption rates, energy consumption, cut-to-length

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Rukomojnikov K.P., Kuptcova V.O. Substantiation of Fuel Consumption Rates of a Harvester. Lesnoy Zhurnal [Russian Forestry Journal], 2020, no. 3, pp. 117–127. DOI: 10.37482/0536-1036-2020-3-117-127


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