TANKENTLUEFTUNGSANLAGE UND KRAFTFAHRZEUG MIT EINER SOLCHEN SOWIE VERFAHREN UND VORRICHTUNG ZUM PRUEFEN DER FUNKTIONSFAEHIGKEIT EINER SOLCHEN

摘要

The fuel-tank aeration system proposed comprises the following elements: a tank (10); an adsorption filter (13) which is connected to the tank via a connection line (12) and which has a vent line (14) that can be closed off by a shut-off valve (15); a tank aeration valve (16) connected to the adsorption filter via a valve line; a pressure feed-in point (21) on the valve line near the aeration valve and a tank-mounted pressure sensor (11). The aeration system can be operated in the following way: the aeration valve and the shut-off valve are closed; compressed air is fed to the pressure feed-in point; the pressure in the tank is measured and a check is made as to whether the pressure satisfies a pre-determined criterion, and the system deemed to be non-operable if this is not the case. The operability of the system proposed can be checked very reliably using the method described since it is possible to apply, without any risk of damaging the system, test pressures which are significantly higher than those which would normally occur in a tank aeration system without the externally applied pressure.