PROCESS AND APPARATUS FOR FILLING N2 GAS INTO TIRE

摘要

A process for filling N2 gas into a tire assembled onto a rim to holda recommended internal pressure comprises discharging air inside the tireprior to the filling of N2 gas to render the inside of the tire into a statelowerthan atmospheric pressure and filling N2 gas into such a tire. An apparatusfor carrying out the above process comprises a single inlet path, at least twooutlet paths and a membrane module for separating air introduced through theinlet path into O2 gas and N2 gas and feeding these gases into respectiveoutletpaths, wherein an outlet path for feeding N2 gas in the outlet paths isconnected at its top to a valve for inflating a tire assembled onto a rimunderan internal pressure and a discharge path for discharging air inside the tireprior to the filling of N2 gas is provided on the way of such an outlet path.