A MOTOR VEHICLE FUEL TANK ARRANGEMENT

摘要

This invention relates to an anti-trickle filling arrangement for a motor vehicle fuel tank arrangement (11) having a vent passage (22) with a main float valve (32) and a sensing tube (16). The main float valve (32) is surrounded by a tubular wall (34) extending into the tank (12) to a level equal to the normal full level of the tank (12) as determined by the sensing tube (16). When the tank (12) is at the normal full level, the volume within the tubular wall (34) fills with fuel (12) and the main float valve (32) closes the vent passage (22) to prevent trickle filling of the tank (10). When some fuel has been used the fuel level within the tube (34) drops and the main float valve (34) opens. A pressure relief valve (36) opens if the pressure within the thank (10) exceeds a preset value while the main float valve (32) is closed.