Recently, the car tire rolling resistance comparison laboratory work conference was held in Beijing. The meeting determined that the 2013-2014 automobile tire rolling resistance test comparison test laboratory, the National Rubber Tire Quality Supervision and Inspection Center as the only third-party testing agency, respectively, obtained the certificate of the car and light truck tires, truck tires comparison laboratory .
Due to its own characteristics, the tire rolling resistance test machine has a large difference in test results between different machines, and it is impossible to evaluate the tire rolling resistance level. In order to solve this problem, the EU adopted the method of establishing a reference laboratory, using the same batch of tires in 9 different laboratories to test separately, taking the average of 9 test results as the reference value, and 9 laboratories passed a certain conversion relationship. The results are converted so that the results can be directly compared.
The China Metrology Association's Chemical Measurement and Control Branch draws on the EU's approach and combines China's actual conditions to establish a domestic tire rolling resistance benchmark laboratory network and issue certificates and plaques to the first batch of comparison laboratories. The National Tire Quality Inspection Center also has a comprehensive tire rolling resistance test method and data evaluation system, which can provide test data according to the requirements of EU limit regulations and labeling regulations, and can also provide authoritative test results according to national standard methods.
The establishment of the comparison laboratory provides an effective way to establish data correlation between domestic tire testing rooms, and also paves the way for the research of domestic tire rolling resistance performance grading methods.
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