摘要：The scarcity of fossil fuel and Compressed Natural Gas (CNG) has made every 2 nd fuel user to think on some alternative resources, or at least devise some sort of technique to overcome the shortage of fuel during CNG holidays. Thus this study covers an overview of HHO gas production, principles behind the reactions and statistical examples, observations of many engineers and observers who determined to make a use of HHO as additional fuel source. Up to now studies reveals that it is possible to produce burnable vapors of HHO gas in result of hydrolysis of distilled water with c ombination of some electrolyte sodium or potassium hydro oxides. That Mixture is generally called Hydrogen-Hydro oxide mixture (H-OH) can give 25%-28% efficiency to fuel combustion if used with fossil fuel. With thermodynamics advantages, by hydrolysis of steam and using different materials as electrode, using 1.3volt to 1.7volt at 0.4 A/cm² the total efficiency can be increased to 40-50% to enhance its utilization for industry use. But need to refine the misconceptions HHO gas is a standalone replacement of fossil fuel for a practical use in cars, scoters and other means of transport. This study suggest policy makers and entrepreneurs to take some supportive actions to promote HHO gas generators/ kits production because this is a low cost solution to cover the shortage of fossil fuel. Key w ords: HHO, Hydrogen, Hydroxy, Brown gas, Fuel efficiency.
