Einrichtung für den Belüftungskreislauf eines Kraftstofftanks.

摘要

A fuel tank ventilation device comprises a tank fitted with a filling pipe (2), an overflow pipe (5), a gas breather pipe (6), a pollution control pipe (7) and/or an aeration pipe (9) and a safety valve (8). …According to the invention the ventilation circuit device is characterised by the fact that an auxiliary valve (29, 33, 51, 57) is provided in order to compensate for a malfunction of the pollution control pipe (7) and/or the safety valve (8) in order to ensure ventilation of the tank by way of the aeration pipe (9). ……