INFLUENCE OF EXPLOITATION CONDITIONS ON ANTI-SKID PROPERTIES OF TYRES

Janusz Pokorski , Hubert Sar , Andrzej Reński

Abstract

Tyre-to-road adhesion plays an important role when taking into account transmission of forces between tyres and road surface. It consequently influences vehicle safety. Moreover, it plays a significant role for modelling vehicle motion, which is often applied in the development of automotive active safety systems and in traffic accidents reconstruction. Furthermore, tyre-to-road adhesion properties are dependent on many factors. One of the factors is the type of tyre – summer or winter. This is the reason why it is justified to study the anti-slip properties of summer and winter tyres. This paper shows the method of measuring tyre-to-road adhesion coefficient. It is based on a skid resistance tester SRT-4 that consists of a special dynamometer trailer, towing vehicle and test-measuring equipment. It was designed to be applied in civil/road engineering and further developed. As a result, the SRT-4 system automatically obtains adhesion characteristics, such as the graph of tyre-to-road adhesion coefficient as a function of wheel slip ratio and velocity characteristics of lock-up adhesion coefficient. Results of the study present the above mentioned characteristics for different types of tyres (summer, winter) in different exploitation conditions. Differences between presented characteristics caused by tyre type and conditions of exploitation are shown. For example, for winter tyres we noticed that the peak value of adhesion coefficient was attained for higher values of slip ratio as compared with summer tyres.
Author Janusz Pokorski (FACME / IAE)
Janusz Pokorski,,
- Institute of Automotive Engineering
, Hubert Sar (FACME / IAE)
Hubert Sar,,
- Institute of Automotive Engineering
, Andrzej Reński (FACME / IAE)
Andrzej Reński,,
- Institute of Automotive Engineering
Journal seriesTransport, ISSN 1648-4142, [1648-3480], (A 15 pkt)
Issue year2019
Vol34
No4
Pages415-424
Publication size in sheets0.5
Keywords in Englishtyre-to-road adhesion, skid resistance tester, traffic safety, accident reconstruction, active safety systems, tyre properties, tyre wet grip index
ASJC Classification2210 Mechanical Engineering; 2203 Automotive Engineering
DOIDOI:10.3846/transport.2019.10426
URL https://journals.vgtu.lt/index.php/Transport/article/view/10426
Languageen angielski
Score (nominal)15
ScoreMinisterial score = 15.0, 17-06-2019, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 0.953; WoS Impact Factor: 2017 = 1.267 (2) - 2017=1.077 (5)
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