A method (100) for detecting a leakage in a fuel tank system comprises generating (130) an initial pressure in the fuel tank system, determining (140) a pressure difference between the pressure in the fuel tank system and the first reference pressure, determining (150) a linearity metric, by comparing the determined pressure difference to at least one out of a linear and a non-linear data model, the linearity metric quantifying the non-linearity of said pressure difference as a function of time; and detecting (170) a leakage in the fuel tank system based on the linearity metric, wherein a non-linear pressure difference function of time is indicative of a leakage in the fuel tank system.
Leakage detection system and method for fuel tank systems
Leckdetektionssystem und -verfahren für Kraftstofftanksysteme
Système et procédé de détection de fuite pour systèmes de réservoirs de carburant
20.04.2016
Patent
Elektronische Ressource
Englisch
IPC: | G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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