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RESEARCH PAPER
Analysis of the influence of tyre pressure changes on vehicle operating parameters
 
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1
Department of Vehicles and Machinery, Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Poland
 
2
Department of Type Approval and Testing, Motor Transport Institute, Poland
 
These authors had equal contribution to this work
 
 
Submission date: 2025-02-24
 
 
Final revision date: 2025-06-23
 
 
Acceptance date: 2025-08-14
 
 
Online publication date: 2025-09-07
 
 
Publication date: 2025-09-07
 
 
Corresponding author
Jarosław Krzysztof Gonera   

Department of Vehicles and Machinery, Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Oczapowskiego 11, 10-719 Olsztyn, Olsztyn, Poland
 
 
 
HIGHLIGHTS
  • The shock absorber damping coefficient depends on the wheel pressure value;
  • There is an influence of the tyre size on the Eusama coefficient value;
  • The Digital Image Correlation (DIC) method enables the following behaviour of a wheel;
  • There are differences between the displacement values of the wheel due to tyre pressure;
  • The influence of wheel pressure on tyre stiffness and operating parameters is described.
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ABSTRACT
The paper aimed to identify the effect of changes in tyre pressure values and the influence of wheel size on the shock absorber damping coefficient (EUSAMA coefficient) using 20 passenger cars with SUV bodies. Eleven variants of tyre pressure were used. The component's behaviour was followed through the Digital Image Correlating system PONTOS 5M and measurement markers cemented on a rim, tyre and body. Thanks to this, it was possible to identify the effect of tyre pressure on tyre deformation in a 3D coordinate system and on the vehicle's operating parameters. It was possible to conclude that there is a significant relationship between the values of the shock absorber damping coefficient and the tyre pressure. Moreover, these changes were also dependent on the tyre size. The Eusama coefficient values ranged from 90% to 60%. At each used pressure value, there were clear differences between the components’ behaviour at the region located in the lower and upper part of the tire, as well as between the position of the front and rear part of the component covering the wheel rotation axis.
eISSN:2956-3860
ISSN:1507-2711
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