Hello people, I´m Celio from Brazil and I think I found a way to burn oil without smoke (or minimum smoke).
Well, just to remember current status:
1- many people found a way to a simple burning to produce light with wvo without smoke, it looks that it´s difficult to find the calibrate the oxigen, wick and smoke, but in small scare (just to rpoduce light is easy, putting some burning cotton (wick) in the oil - example:
http://worldwideflood.org/ark/technology/oil_lamps.htm 
2- to use in stove (more heat), many people tried but it produces smoke (example: rocket stove oil fueled idea
http://youtu.be/b8KO60kSyJ0). The smoke is produced by incomplete oil burn, and so people tried sofisticated ideas using pressured air ou pressured oil (like this
http://youtu.be/AHlwiUqu5Qc)
So, my new idea: the exposed WVO produces smoke, but to produce a complete hot burn, you needn´t pressured oil/air if you find a equilibrium (like in oil lamps). To find this equilibrium is difficult, but I had an idea: collect the excess of oil so it doesn´t produce smoke. If you collect the excess of oil, the burning area is like burning solid fuel like wood (and wood does not produce smoke in rocket stove).
See the pictures: I made a tube where the oil go to burning area (well, I made a tube thinking in it like a artificial woodstock), and the how the excess of oil is difficult to manage to burn it all, I made a hole so it falls in a can (and you may take this can to put in the tube again). result: no smoke. Why? In other systems (like in rocket stove oil fueled idea) the excess of oil fall into the stove´s floor and produces smoke. How in my system the excess fall into a can, it doesn´t burn (incomplete burn) and no smoke.
My next goal is make it in a bit larger scale, because the flame I get is bigger than in oils lamps but is not enough to cook.
