Post-Start Enrichment

Post Start Enrichment Rate:

t1 Start enrichment (duration e.g. 2 seconds)
t2 Post-start enrichment (duration e.g. 15 seconds at coolant temperature of +15°C)
t3 Warming-up phase (duration according to coolant temperature)
A Enrichment rate
a Start
b End of start, commencement of reduction in post-start enrichment
c End of post-start enrichment, commencement of Warming-up phase control