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 tyres
https://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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acceleration force coefficient acceleration test according to formula adjusted allowable applied average decelerations average slip ratio braking test bus tyres calculated according candidate tyres changes China coefficient of variation compared completed contrast tests control tyres CTI snow hardness differ distance document drive shaft effective tests ensure evaluate exceed factor of standard final speed global positioning system indicated inflation pressure initial speed installed km/h layer less light truck measuring instrument measuring rod meters per square miniature and light pavement placed position reference test tyres relevant requirements roads selected set of standard single tyre load snow grip index snow hardness tester snow surface specified speed measured square second m/s2 stability factor standard deviation standard reference test test data test method test pressure test vehicle traction control system truck & bus tyre load index tyres with single vehicle equipped weighted average value wheels wind speed