Quote:
Originally Posted by ctmaybury@yahoo.com
I'm already doing lpg fumigation with good results.
|
What vehicle are you doing the LPG fumigation? Is it Diesel-powered?
Quote:
|
I think you would need high pressure and good nozzles to get the best atomisation you can. Big drops of water wouldn't help much.
|
Atomisation is the key, and adding some alcohol (methanol, ethanol, whatever) usually also helps vaporising the water at the intake stream.
Quote:
|
If you drop the combustion heat with water, you pobably increase the hydrocarbons in the exhaust and reduce the nitrogen oxides.
|
Sure it reduces the NOx, but any increase in HC emissions is quite arguable. Dropping the intake temperature with water injection usually leads to a denser air flow, with a higher concentration of oxygen which then leads to a more accurate combustion. OTOH we also may remember it's likely to also involve a leaning of the air/fuel ratio, while the water helps cooling down the pistons instead of relying on a richer mixture for that matter. Anyway, since the water has a higher thermal conductibility than air, it retains some heat that would otherwise be wasted instead of turned into motion.