METHOD AND SYSTEM FOR TANK VOLUME DETERMINATION

摘要

The present invention provides a method and system for determining the volume capacity of a fuel tank (FT) of a vehicle which has a fuel level sensor (FS) situated in the fuel tank (FT). A number (n) of known possible values ( VI, VII, ...., Vn ) for the volume capacity are stored. The quantity of fuel ( Vc1 ) consumed between a full refu elling of the vehicle and a subsequent refuelling of it is determined. The ratio between the residual quantity of fuel and the full quantity of fuel at the beginning of said subsequent refuelling is determined. A value ( V1 ) for the aggregate v olume capacity of the fuel tank is calculated on the basis of the quantity of fuel consumed between the two said refuellings and said ratio. An assumption is made on the basis of the calculated value ( V1 ) as to which of the known possible valu es ( VI, VII, ...., Vn ) corresponds to the a ggregate volume capacity of the fuel tank. The method is repeated on the occasion of subsequent refuellings, and new improved assumptions about the volume capacity are made on the basis of further calculated values of it.