Impact of specific factors on the state of the tire pressure value.

Abstract

The article presents the research on the impact of specific factors on the state of the pressure value in passenger car wheels in service. Data on how the vehicle was used was obtained based on a survey. The survey contained data on checking the condition of the vehicle tires and also measured the tire pressure. The aim of the study was to investigate the relationship between the impact of specific factors on the state of the pressure value in passenger car wheels. The correlation analysis of the correctness of pressure in car tires and selected factors was carried out using the Kendall tau test. In addition, odds ratio (OR) analysis and the Hosmer and Lemeshow test were used to analyze the results. The work draws attention to the impact of improper tire pressure on tire durability and road safety as well as the functioning of other active safety systems. In addition, attention was drawn to drivers' awareness of the need to control the pressure in the wheels of the vehicle. Based on the analysis it was found that the age of the vehicle used and the driver's knowledge have the greatest impact on the correct tire pressure. Studies have shown that in over 60% of the vehicles analyzed, the tire pressure was normal.

Numerical Simulations of the Driving Process of a Wheeled Machine Tire on a Snow-Covered Road

“…When driving on snowy and icy road in the winter, the friction coefficient between the tire and the road is low, so it is easy to experience a lateral slide. On snow-covered roads, the inflation pressure has a direct influence on the driving performance of the tire [45]. Therefore, it is necessary to improve the adhesion of the tire by means of changing these four kinds of loads are 1360N, 1408N, 1460N, and 1480N, respectively; obviously, their values are not very different, and there is a positive relationship between the traction and the wheel load.…”

“…When driving on snowy and icy road in the winter, the friction coefficient between the tire and the road is low, so it is easy to experience a lateral slide. On snow-covered roads, the inflation pressure has a direct influence on the driving performance of the tire [45]. Therefore, it is necessary to improve the adhesion of the tire by means of changing the inflated pressure.…”

Influence of the Weld Joint Position on the Mechanical Stress Concentration in the Construction of the Alternative Skid Car System’s Skid Chassis

“…The stability of the car can be assessed from many aspects [21], of which one of the options is the assessment of the change in the car's behaviour depending on the change in the adhesive force [22]. The change in the adhesion force between the wheels and the road can be achieved, step by step, by changing the coefficient of adhesion (skid surfaces) [23][24][25][26][27], or by a continuous change in the radial reaction of the vehicle wheels using the additional equipment: alternative SkidCar [13]. However, the requirement is that the incidence, due to the change of its behaviour as a result of the adhesive forced added to the vehicle, should be consistently low.…”