Fuel adaptation, general

The objective of fuel adaptation is to compensate for normal production tolerances, ageing and minor deviations in fuel/air ratio in case of a system fault.

Fig 1: Identifying Fuel Adaptation (X)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Identifying Fuel Adaptation (+)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The function is divided into two parts, multiplicative adaptation that takes place under partial load and additive adaptation that takes place at idling speed.

Together, these adaptation will make closed loop work with a correction factor of around 1.00.