METHOD FOR OPERATING INJECTORS OF AN INJECTION SYSTEM

摘要

The invention relates to a method for operating injectors of an injection system of an internal combustion engine, which injection system has a pressure accumulator, in which method the needle motion of the injectors is controlled directly by an actuator. The method is an injector calibration method, wherein the ACTUAL injection amount of each injector of the injection system is determined by means of the fuel amount demanded of the pump of the injection system for each injector or by means of the pressure loss in the pressure accumulator caused by the injection process. The determined demanded fuel amount or the determined pressure loss is compared with a target fuel amount or a target pressure loss for each injector or the determined demanded fuel amount or the determined pressure loss is compared among the injectors of the injection system. If a deviation is detected for an injector, an open-loop/closed-loop control method is performed in order to reduce/eliminate the detected deviation.