Closed loop fuelling and methanol injection

[Jardon]

Originally Posted by Richard L

Water only injerction should just as be as effective with you ignition system can cope with it. Since water haa twice the latemt heat of methanol, you only need to inject helf the amount.

Methanol will natually burn when ignited so sparket energy will not be taxed. Imaging burning a wet piece of paper, heat is being taken away as the water evaporates.

Reduce your jet size for water or runM50:W50 for all season performance. The ME7 will find the correct fuel and ignition location for suit your wmi injection setup. But if it goes outside the control area, you will have negative results.

Hi Richard,

that hasn't been my experience - my guess is that water AND low lambda slows the burn too much but methanol contributes as a fuel (a high octane one too) and petrol is trimmed out. With water the petrol volume injected remains unchanged so the water effectively makes the mixture uber-rich. Running Vpower 99 octane and 10-15% methanol injected at 116 octane gives a combined octane of 101-102 by my maths and I will revisit the ignition advance some day - would need to be summer. I like the idea of experimenting with water and ignition advance though.