Modification of the Adhesive Force by Changing the Radial Reaction on Vehicle Wheels

Abstract

This article deals with the possibilities of adhesion force changes of a road vehicle. The authors present the possibilities of reducing the adhesion force of road vehicles and, at the same time, present their own system for changing the radial reaction of the vehicle wheels. This system removes the disadvantages of a commercially available SkidCar system. A representative road test is chosen in the article to determine the stability in a straight-line drive. Furthermore, the authors report the courses of characteristic parameters describing the behavior of a vehicle for driving a conventional car on a sliding surface and compared to the 50 % radial reaction of a vehicle driven with the SlideWheel on dry asphalt. It is clear from the measured runs that it is possible to change the adhesion force by changing the adhesion weight transmitted by the vehicle wheels. The use of the proposed SlideWheel system is possible for the purpose of verifying vehicle stability, while improving the driver's ability to operate the vehicle under reduced-adhesion conditions. The main goal of this paper is to design a system for reducing the adhesive force in an experimental car and perform experimental measurements.

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

“…For this reason, the vehicle could be brought to the limit of stability, i.e., to skid at a lower (safe) speed, even on dry asphalt. More detailed specifications and the use of ASC is processed in [14].…”

“…The motivation of this work is to help SkidCar manufacturers to deliver a reliable frame for a given group of cars [14], which is, of course, significantly limited. Thereby, a prototype of an Alternative SkidCar (ASC) [15] has been compiled, with the advantage of possibly being used on an individual vehicle construction, that is to say, an experimental vehicle [16].…”

Influence of tire pressure on the vehicle braking distance

“…Establishing the relationship between the mileage and the technical condition of car tires is a significant problem of road safety. Along with the wear of the tires, the so-called drainage volume of the tread, which is directly related to its tread height [1,5,6] and [7,11,20] as in the works [17,19] is reduced. Of particular importance is the effect of various parameters on the vehicle's braking distance.…”