Catalytic or Oxidative?

When using electrolytically produced hydrogen and oxygen to enhance carbon fuel, the net result is an increase in combustion efficiency; more of the carbon fuel is undergoing a complete combustion and an increase in energy output is achieved. It is theorized that the addition of the oxygen allows for a more balanced stoichiometric proportion, which is consistent with traditional chemistry, but what is the hydrogen doing? I theorize that the hydrogen is behaving two fold: it is behaving catalytically by reducing the activation energy required for carbon fuel to propogate its own ignition; and two, it is being consumed as a combustible material itself. The hydrogen is behaving oxymoronically; catalysts are typically not consumed, and according to definition, they remain present after the main reaction is complete. I am suggesting a dual effect is possibly being achieved, an effect that is partially contrary and partially consistent with the traditional text-book definition of a catalyst.