Received 24.02.2025
Revised 14.05.2025
Accepted 28.06.2025
Retrieved from Vol. 29, No. 1, 2025
Pages 20 -25
Abstract
The article proposes a mathematical model of the change in deceleration from the speed of a vehicle with an electric traction unit. Research object: the process of deceleration of a vehicle with an electric traction unit under the action of rolling resistance forces. The purpose of the article: to develop a mathematical model for determining rolling resistance, which allows estimating the energy consumption for overcoming rolling resistance to compare the energy efficiency of different types of vehicles with an electric traction unit. Research methods: experimental studies of the influence of rolling resistance forces on vehicle deceleration and methods of mathematical statistics. The proposed mathematical model establishes the dependence of the deceleration value on the vehicle speed in the range of up to 50 km/h, which is the maximum permitted speed in the city. Results: 1) the model allows you to obtain the value of the resistance force for a known vehicle mass and allows you to consider it a constant value in the speed range of up to 50 km/h due to the insignificant values of the coefficients of the influence of speed on the vehicle deceleration. 2) the model provides for further use in determining the energy efficiency index of a vehicle with an electric traction unit, since the resistance index is one of the components that affect the energy consumption. Practical significance: the results of the study have practical value for enterprises that manufacture vehicles to assess their competitiveness. Research prospects: further research is aimed at improving the mathematical model by performing additional experimental studies of other types of vehicles with an electric traction unit that are manufactured in Ukraine. Key conclusions: 1) the deceleration of a vehicle with an electric traction system due to the action of resistance forces can be considered a constant value in the speed range up to 50 km/h. 2) the resistance of a vehicle with an electric traction system can be considered a constant value in the speed range up to 50 km/h, which should be taken into account when developing a mathematical model of energy consumption when determining its energy efficiency indicator
Keywords:
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