Analysing the methods for determining coefficient of resistance to car wheels rolling

Abstract

Problem. When simulating the operation of automatic or automated driver assistance systems, it is necessary to take into account the rolling resistance of the car wheels the moment the car begins to move on a slope, which necessitates the choice of a method for calculating the value of the coefficient of rolling resistance of the car wheels. Goal. The aim of the work is to determine a rational method for calculating the coefficient of rolling resistance of a car wheel based on the analysis of methods and approaches in relation to determining the coefficient of rolling resistance of car wheels. Methodology. The work was performed by the method of generalizing information using the method of analytical comparison and includes the analysis of information from various network resources, standards, scientific libraries and open bibliographic special sources. Results. The main result of this work is the conclusion that not every method of calculating the coefficient of rolling resistance is applicable when modeling the start of movement of a wheeled vehicle on the rise. Based on the analysis of methods for calculating the rolling resistance coefficient of a car wheel, recommendations are given on choosing the most rational method for modeling the start of a car standing on a mountainside. Scientific novelty. Prerequisites have been formed for further research related to modeling a wheeled vehicle upgrading. The analyzed information from open scientific sources indicates that the chosen direction is covered quite widely in the specialized technical literature, but requires additional research in connection with the peculiarities of the work processes that occur the moment the car is standing on the side of the mountain. Practical significance. The results of the study can be used to expand theoretical information, which is a component of the course on car theory in teaching undergraduate and graduate students in the field of the automotive industry. The materials of the work can also be used to form mathematical models related to the description of rolling resistance of car wheels tires.

Keywords

• rolling resistance
• coefficient of rolling resistance
• start of movement
• upgrade
• vehicle