METHOD FOR CONTROLLING A PRESSURE INSIDE VEHICULAR FUEL TANK SYSTEM

摘要

A method for controlling a pressure inside a fuel tank system including a fuel tank and a controllable pressure relief valve. The method includes assessing whether a predetermined vapor expulsion risk is present, the predetermined vapor expulsion risk pertaining to a vapor expulsion from a main volume of the tank into a space accessible to an operator; if said risk is present, operating the pressure relief valve in accordance with a first pressure threshold, if the risk is not present, operating the pressure relief valve in accordance with a second pressure threshold which is higher than the first pressure threshold.

主权项

1. A method for controlling a pressure inside a fuel tank system comprising a fuel tank and a controllable pressure relief valve,
the method comprising:
assessing whether a predetermined vapor expulsion risk is present, said predetermined vapor expulsion risk pertaining to a vapor expulsion from a main volume of the tank into a space accessible to an operator;if said risk is present, operating said pressure relief valve in accordance with a first pressure threshold,if the risk is not present, operating said pressure relief valve in accordance with a second pressure threshold, wherein the second pressure threshold is higher than the first pressure threshold.