Disclosed is a fuel tank vent system monitor configured to facilitate determination of a performance of a vent system 6 for a fuel tank 3. The vent system 6 comprises a vent line 65a, 65b comprising a valve 61 that is openable to place the fuel tank 3 in fluid communication with a region external 20 to the fuel tank 3. The fuel tank vent system monitor is configured to: cause fluid to be supplied to the fuel tank 3; thereafter, obtain a parameter indicative of a characteristic of contents in the fuel tank 3; and based on the parameter obtained, cause an action to be performed to facilitate determination of the performance of the valve 61. The fluid used may be fuel and the characteristic obtained may be; fuel level, rate of change of fuel level, pressure. The system may also comprise a further second valve 62 as well as testing both the valves 61, 62 cracking pressures.
Fuel tank vent system monitor
2025-03-05
Patent
Electronic Resource
English