Method for determining the loading of activated carbon filter in tank ventilation system for fuel tank of combustion engine used in motor car, involves closing activated carbon filter on load state based on the measured pressure values

摘要

The method involves arranging a first valve (16) between the tank (10) and the activated carbon filter (14) and a second valve (15) between the activated carbon filter and the suction pipe (12) of a combustion engine (11). The activated carbon filter with closed valves is loaded with a fresh air. The activated carbon filter is closed on the load state based on the measured pressure values in the activated carbon filter. Independent claims are included for the following: (1) a tank ventilation system; (2) a computer program for determining the loading of activated carbon filter; and (3) a computer program product for determining the loading of activated carbon filter.