So you inject pure methanol pre-compressor?
It evaporates pretty damn fast, but I wonder if there are any safety concerns with pure meth. :?
I've been researching the subject heavily again, even bought papers on the subject. Those are aimed at aircraft or power generator compressors, but the fundamentals are the same. Demineralised water is the only substance used though in the experiments, so how methanol behaves is anyone's guess.
The water droplets boil by the way inside the compressor, once they enter the areas of extremely low pressure. So water never makes it into the diffuser, only steam. We're talking water/air ratios of up to 5% here, which is far more than any of us have used - I've only gone up to 1.5% (by weight)
Steam is useless for in-cylinder cooling by the way, there is no phase change left that we can take advantage of. I was suspecting that, hence my setup with an extra nozzle after the intercooler. Steam actually displaces oxygen in the chambers (not good) but because this happens after the compressor no oxygen molecules have been traded off. This may explain the boost increase which is observed as soon as precomp injection kicks in)
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