i was thinking about it however wouldnt you be concerned with poisoning from the electrolyte you are using? Thats what is changing my mind. I wouldnt want Drano mist on my steak.
next.. how much HHO is needed for let say run a 2 hp lawnmower motor to actually produce the 2hp?
From what i could find much more power goes into actually producing the HHO then you can get out even with an alternator.
A 100% efficient alternator and 2 hp would be able to produce 108 amps. In real life with efficiency losses with 2hp you might be able to get 80 amps out of it at 13.8 volts. Can you make enough HHO with 80 amps to produce enough to feed the lawnmower engine so it can produce 2hp?