Function, pedal request

Pedal potentiometer 1 provides ECM with information on the drivers torque request. The pedal position together with the engine speed gives a requested torque using a matrix. The torque request varies between 0 Nm (idling) and a value that is somewhat greater then the maximum torque allowed for the engine.

To obtain good driveability and response to the pedal position, a given pedal position will give a higher torque at lower engine speeds and lower torque at higher engine speeds.

The torque request finally results in a requested air mass per combustion so that the engine can attain the requested torque.