Basic quantity, fuel: E85
Due to the fact that more fuel is required with an ethanol mixture a further matrix has been added for the fuel quantity with E85 operation. With an adapted ethanol content of 0-5% the table for petrol operation is used, while at 80-85% the new table for E85 is used. With an ethanol content between 5-80% the torque varies steplessly between the two tables.
During E85 operation the engine runs within the lambda controlled (lambda 1) range up to high engine speeds, where the engine would otherwise request enrichment during operation on petrol. This means that the difference in fuel consumption between petrol operation and E85 operation decreases with high loads, where during petrol operation full load enrichment (lambda >1) must be applied to cool the engine.