International Journal of Automotive Technology· 2026Q2
The Role of the Main Motion Drags in Middle-Class Passenger Car Drive System Development
- 0citations
- Q2SCImago
- 2026year
Short summary
An analytical study reveals that rolling resistance and aerodynamic drag are the most significant factors influencing total resistance power in middle-class passenger cars, with rolling resistance being more sensitive to parameter changes.
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Key points
- Rolling resistance and aerodynamic drag constitute the largest shares of total resistance power in passenger cars.
- Rolling resistance exhibits higher sensitivity to changes in its defining parameters compared to other resistance components.
- The study employed relative sensitivity analysis to assess the impact of parameter variations on total resistance power.
- Findings are applicable to both internal combustion engine vehicles and have been discussed for hybrid and electric drives.
AI-generated from the title and abstract; the full text is not read.
Abstract
The article analyses the significance of the four main resistances (drags) existing during the straight-line motion of a car, arising from rolling, longitudinal aerodynamics, road longitudinal inclination (grade), and inertia of the body and rotating parts. Their shares in the total resistance and the sensitivity of the resistance power to changes in the main parameters of the relationships that determine the said four resistance (drag) components were analysed. The method of analytical study of the problem was chosen. The applied method of relative sensitivity analysis was presented. It was considered in relation to the total resistance power, examining the impact of changes in individual drag components and in the selected parameters that determined their values. Formulas defining the relationships for the criteria quantities have been presented. Test conditions for constant speed and unsteady accelerated motion in the longitudinal direction are described. An example data set assumed to represent a middle-class passenger car with an internal combustion engine was presented. Results of calculations of the values of quantities and criteria functions for constant speed motion and straight-line accelerated motion were presented. The general conclusions were drawn. The consequences of the analyses for the vehicles with hybrid and electric drives were discussed.
The authors' abstract, as published at the source. International Journal of Automotive Technology, 2026 · DOI ↗
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Field: Aerospace Engineering
Aerospace EngineeringEngineering