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Fuel injection

Fuel injection


The fuel injection for Motronic 2.10.3 is sequential, which means that the injection follows the engine's firing order

Injection times are controlled by a control module using a large number of parameters:


• engine load (mass air flow sensor)

• engine speed (crankshaft position sensor)

• engine temperature

• oxygen sensor

• etc.


Injection timing can vary, so that for instance on a cold start fuel injection can be done with open inlet valves.

The length of time the injectors can be open varies from approx. 3 ms when idling to approx. 15 ms when fully loaded.