d. Acceleration and full power

d. Acceleration and full power

During the acceleration stage there is always the enrichment (diagram A), via the electronic control unit, of the mixture strength, depending on the engine coolant temperature sensor (1), the rpm sensor (2) and the butterfly valve position sensor (3).

During the operation of the engine in full power the basic injection times (ti) are enriched by a factor (K) which depends on the butterfly valve (3) opening angle (α).

When the butterfly valve opening angle exceeds 70° (diagram B), the full power enrichment is operational and the basic injection times are increased by around 10%.

When 6000 rpm is exceeded, the system limits the maximum number of revs by the electronic control unit (suppressing the injection impulses and cutting off the supply of fuel).

1. engine coolant temperature sensor
2. rpm sensor
3. butterfly valve position sensor