Fresh Water Mist for IC Generators in Dry Environments

Not at the air inlet, on the radiators. Keeps them cool in the desert and even offshore. I'm sure "somewhere" there is somebody doing it into the intake but not that I've seen and check all the previous CR4 about water into intake manifolds, a little better idea than H2 but not done by non-squirrels as far as the real world goes.

I'm not sure of your age, but I'd venture to say, Water injection been around a little longer than you.

I do know that water injection with the use of a turbo or super charger has been done. But the water injection is more to cool the combustion chamber to prevent fuel detonation than it is to try and gain any mechanical efficiency from producing steam. I suppose that a mist might provide some benefit. I wonder if the added water vapour would more quickly pit or damage the valve seats or the exhaust. You might even have an icing problem in the intake manifold from the pressure drop causing a temperature drop, too.

I don't know how much research you've done yourself, but this link is a pretty good starting point. Just be sure to read thru all of it. There's some variables to contend with when talking about water injection.