Second-level functions
Spark-ignition engine - Control functions

Example of configuration and processing (figure 4 )

The target attached to the motor shaft has sixty teeth, two of which are missing. This allows precise angular registration, but with an uncertainty of one revolution in relation to the four-stroke engine cycle. This uncertainty is eliminated by reading the camshaft target, whose singularity coincides with that of the motor shaft, but which is only seen every other turn....