Jolt, Komtek,
The basic principle of quantum mechanics is that the biggest atom always wins from the smaller one.
The oxygen is in mass the biggest.
The oxygen atom that we have after the electrolysis proces is an atom that is missing 2 electrons in his outer shell.
So, if you add electrons in the gas mix, the oxygen atom will fill his outer shell up with the free electrons and if there are no free electrons, it will bond with the electron from the hydrogen atoms.
Jolt, if the oxygen atom has filled his shell up, it will not change back into anything. There is no need for or proces that is doing that.
What is left in the mix is hydrogen with 1 electron and nitrogen with some electrons missing.
So, what happens next?
Some hydrogen atoms will bond with nitrogen and we will get Ammonia, which is good, because it levels on the same burn velocity as petrol.
We also have hydrogen atom with a certain amount of oxygen atoms that will bond in the burn proces at the same level as petrol too.
We end up with a much higher efficiency use of the hydrogen we produce.
Steve