Fuel injection: Function
The flow is regulated by the pulse conditions so that is always constitutes a particular proportion of the total flow consumed by the engine.
If the air/fuel ratio of the flow differs from 14.7:1, lambda control is affected. However it is not the task of lambda control to correct for purge surplus. Purge therefore has a correction factor which is influenced by lambda control as soon as the purge begins. The entire lambda control deviation from 1.00 is transferred to the purge correction factor, which means that the lambda control fluctuates around 1.00 (0%) even if the purge contains large quantities of hydrocarbon or consists of pure air.
When the purge is not active, a factor of 1.00 is used and the entire fuel error is corrected by lambda control as well as multiplicative and additive adaptation