Back to results
US 7,458,246 B2Granted
Method for functionally testing a filling level sensor
AssigneeSiemens Aktiengesellschaft
InventorsOliver Grunwald, Matthias Wiese
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for functionally testing a filling level sensor which measures the filling level of a liquid in a tank, in which method a change in filling level that is measured by the filling level sensor is compared with a calculated change in filling level. According to the invention, the calculated change in filling level is determined from a measured change in temperature of the liquid.
Claims9
A method for functionally testing a filling level sensor that measures a filling level of a liquid in a tank;
- measuring a change in the filling level that is measured by the filling level sensor;
- comparing the change in the filling level with a calculated change in filling level;
- and
- determining the calculated change in filling level from a measured change in temperature of the liquid, wherein the liquid is a fuel for supplying an internal combustion engine, and the measured change in filling level and the change in temperature are recorded over a period of time that begins after the internal combustion engine has been switched off and ends after the internal combustion engine has been switched on again.
1 more element
Dependencies are inferred from the claim text.