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Document Title Method of deceleration measuring and data processing for tyre rolling resistance determination
Reference Number GRB-61-09
Date
28 Jan 2015
Summary Pursuant to the introduction of the deceleration method for measuring tire rolling resistance using the dω/dt approach (“Deceleration Calculator”) proposed by NAMI and accepted by GRB, UTAC (France) provides information on the results of tests conducted to confirm repeatability and reproducibility of the new method using different machines.
Source(s) France and UTAC
Rulemaking Area(s) UN R117 Tire Noise, Wet Adhesion, and Rolling Resistance
Meeting(s)
Downloads
UNECE server .pdf format
Excerpts from session reports related to this document
GRB | Session 61 | 27-29 Jan 2015

15. The expert from France presented the results of testing tyres of commercial vehicles (classes C2 and C3) for the deceleration test method using the dω/dt form for measuring rolling resistance (GRB-61-09). The aim of this study was to compare the measurements obtained at a dedicated and non-dedicated rolling resistance machine. The results at the non-dedicated rolling resistance machine demonstrated a poor repeatability of the measurements, thus leaving open the question whether or not such machines are suitable for the proposed deceleration test method. GRB was of the view that further studies would be necessary and encouraged other laboratories to conduct such tests.