Technical Description: Compensation: Notes
The calculated basic fuel quantity makes the engine run perfectly under normal conditions, i.e. as long as it is warm and the load or engine speed does not change. Occasionally, however, the air/fuel mixture must be corrected so that the engine will run smoothly and emissions will be kept low under all conditions.
The basic fuel quantity is multiplied by a correction factor that is normally 1.00. If the correction factor is changed to, for example, 1.01, then the fuel quantity will be increased by 1%. If the correction factor is changed to 0.98 instead, then the fuel quantity will be reduced by 2%. Closed loop is usually inactive if the correction factor is not 1.00, as the compensation would otherwise be corrected by the closed loop and would have no effect.