CIRCUIT AND METHOD FOR OPERATING AN INJECTOR ASSEMBLY, AND INJECTOR

摘要

The invention relates to the operation of an injector assembly, for injecting fuel into an internal combustion engine of a motor vehicle. The invention is characterized by a particular manner of supplying a measuring voltage, for detecting the switching state of a valve contact switch, wherein one of the lines (PL2), provided for supplying an injector drive voltage, is also used for supplying the measuring voltage. The above is enabled by the use of an alternating voltage (Vrf) which is injected (K3), as the measuring voltage, at the line (PL2) which leads to the injector assembly and extracted (K2), depending on the switching state of the contact switch, in the area of the fuel valve.