Verfahren und Vorrichtung zum Steuern einer Kraftstoffpumpe eines Kraftfahrzeuges

摘要

An apparatus 1 for an electric fuel pump 2 of a motor vehicle comprises a signal processor, preferably incorporating non-volatile memory, as well as ROM and RAM, electrically connected to a serial communications link interface SCL configured to receive coded digitalized signals from an electronic device such as an engine management system 7 for example defining the engine's fuel requirements via a serial communications bus 3. A pump driver connected to the signal processor is configured for connection to the fuel pump 2 and for controlling the power fed to the pump 2 in accordance with the defined fuel requirements. The signal processor is optionally adapted for connection to an interrupt device INT such as an inertia switch and in the case of the preferred signal processor which is a microcontroller having a non-volatile memory, to an immobilizer device 6 such as a security coded device for coded full activation of the control module. The apparatus 1 and pump 2 may be installed within a fuel tank 4.