Injector Adjustment
As with the piezo injectors from the N54, the injector adjustment must be carried out when the injectors are replaced.
When the injectors are manufactured, a multitude of measurement data is recorded at specific points in the factory. In this way, the tolerance ranges for injector-quantity adjustment are determined and specified in a six-digit number combination.
Information on the lift performance of the injector is also added for injector voltage adjustment. Injector adjustment is required because of the individual voltage demand of each piezo-actuator.
An allocation is made to a voltage demand category, which is included in the number combination on the injector. These data are transmitted to the control unit.
During engine operation, these values are used to compensate for deviations in the metering and switching performance.
When replacing an injector, it is absolutely essentially to carry out an injector adjustment.