GB/T 33830-2017 Translated English of Chinese Standard. (GBT 33830-2017, GB/T33830-2017, GBT33830-2017): Test method for snow grip performance of truck & bus tyreshttps://www.chinesestandard.net, 2 nov 2019 - 26 pagine This Standard specifies the method for measuring the grip performance of truck & bus tyres on snowy roads. To reduce measurement deviation, this Standard uses a test method of comparing with standard reference test tyres. This Standard applies to truck & bus tyres. |
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121 and speed acceleration force coefficient acceleration test according to formula actual vehicle speed anti-lock braking system average decelerations average slip ratio braking test bus tyres calculated according candidate tyres coefficient of variation contrast tests control tyres CTI snow hardness differential lock effective tests factor of standard final speed fully developed deceleration global positioning system km/h least 6 effective light truck measuring instrument measuring rod meters per square miniature and light Qingdao reference test tyres repeated after reprocessing reprocessing the test second m/s single tyre load snow compaction index snow grip index snow grip performance snow hardness tester square second m/s2 stability factor standard reference test suitable for assembling test method test pressure test run pavement test tyres corresponding test vehicle traction control system truck & bus tyre load index tyres and control tyres and standard tyres are tested tyres with single vehicle equipped vehicle speed measured weighted average value