Patent ID: 8826930
Filing Date: 2014-09-09
Classification: B60K,Y10T

Abstract:
1. A ventilation system for a fuel tank, comprising: a drain pump, a liquid/vapor separator, said LVS, capable of separating liquid droplets from fuel vapors and of trapping the liquid droplets, the LVS comprising an internal volume that includes a baffle or a chicane to trap the liquid droplets, and a line connecting the LVS to the drain pump, the line allowing the liquid droplets trapped in the internal volume of the LVS to be drained by the drain pump, wherein the line connecting the LVS to the drain pump includes a roll-over valve, said ROV, the ROV comprising a float that blocks communication between the LVS and the drain pump if at least one of the following two conditions is reached: a) a level of fuel in the ROV reaches a certain height, and b) the fuel tank is tilted beyond a certain angle or is overturned, and if none of the preceding conditions is reached, the ROV is open and brings the internal volume of the LVS into communication with the drain pump.