Device for detecting fuel input in a motor vehicle tank

摘要

An apparatus detects the addition of fuel to a fuel tank of a stopped motor vehicle under conditions of a cut off or running engine. The apparatus detects whether or not the vehicle engine is running and whether or not the tank is closed by a fuel filler cap when a tank is being filled. Vehicle speed is also measured. A first measurement of the level of fuel in the fuel tank is taken when the engine is cut off, or when the fuel filler cap is removed and the vehicle engine is running. A second measurement is taken when the vehicle engine is started up, or when the fuel filler cap is fitted onto the tank and the vehicle engine is running. The addition of fuel to the vehicle fuel tank is detected from the first and second measurements.