Knock Sensor, Component Description - GF07.04-D-6030HD
with CODE MZ0 (Blue EFFICIENCY)
with CODE XZ1 (Model generation 1)
ENGINE 651.955/956/957 in MODEL 906
Shown on model 906
Location
Knock sensor 1 and knock sensor 2 are located on the left side on the crankcase.
Task
The knock sensor 1 and knock sensor 2 detect the vibrations on the crankcase which occur due to injection and the associated combustion in the individual cylinders.
The knock sensor 1 and knock sensor 2 transmits the detected vibrations as voltage pulse to the CDI control unit (N3/28).
Body
Knock sensor 1 and knock sensor 2 are composed of the following components:
- Seismic mass
- Adhesive
- Piezo element
- Bonding
- Electrical connection
Function
The vibrations on the crankcase are transmitted over a seismic mass on an inner piezoelement and are converted into electrical voltage pulses.
The information obtained from evaluation of the signals of the knock sensor 1 and knock sensor 2 from the CDI control unit is used for zero quantity calibration of cylinder 1 injector (Y76/14), the cylinder 2 injector (Y76/15), the cylinder 3 injector (Y76/16) and the cylinder 4 injector (Y76/17).