Ok,
An artist I am not, **** artist maybe but that's another story from my younger days in the pubs of dear old England.
Here's my diagram:
As you can see, the air intake is fed (whole) into the top of an airtight tank. As the intake removes air from the tank, air is sucked in through the air filter to down below the fluid level. Air bubbles breaking on the surface fling molecules of liquid into the air being breathed by the intake.
By adjusting the ball valve on top, we can change the tanks dependency on air directly from the filter, thus, adjusting the ratio of water to fuel. This valve will also need either it's own air filter or a path to the existing one.
If a vehicle with a 4.7L V8 can breathe and be drivable through a 90% restriction, surely it can breath through water and reap the benefits of water injection also.
Here's another food for thought:
If our vehicles can get by with much less access to air, will this also lower the HHO to engine capacity requirements for gains?
Russ.