Bosch Motronic M1.5.5

Bosch Motronic M1.5.5
Phase 2, Euro 2  – 1.8 and 2.0 T.Spark 16V
The Bosch Motronic M1.5.5 belongs to the category of integrated system governing:
– inductive discharge electronic ignition
– statistic timing
– phased sequential electronic injection (1-3-4-2)
When idling ECU controls:
– spark instant
– air intake
to adjust the engine to changes in environmental parameters and applied loads.
The ECU controls and anages injection so that the stoichiometric ratio (air-to-fuel ratio) is constantly optimal.
Essentially, the main functions of the system are: