NOVELTY - The device comprises a pot (1), a screw cap (2), a flat joint (3), two rubber pieces (4), a tubular outlet (5), three sets of dual electrodes, two plastic turntables, two threaded rods, four nuts, electrical wires, insulating inserts having a thickness of one millimeter, and an anti-flashback fuse. The dual electrodes consist of three stainless steel plates with an area of 10 cm2 of which each is spaced at an interval of one millimeter by insulating inserts, and an anode at the center and cathode at each side connected with a valve bridge.    USE - The device is useful for saving fuel for heat-engine vehicles, passenger car, truck, construction vehicle, farm vehicle and boat having a battery and an alternator for operating hydrogen and oxygen generator, and for domestic heating to improve fuel or gas efficiency.    ADVANTAGE - The device is capable of effectively saving the fuel, and reduces exhaust gas pollution.    DETAILED DESCRIPTION - The device comprises a pot (1), a screw cap (2), a flat joint (3), two rubber pieces (4), a tubular outlet (5), three sets of dual electrodes, two plastic turntables, two threaded rods, four nuts, electrical wires, insulating inserts having a thickness of one millimeter, and an anti-flashback fuse. The dual electrodes consist of three stainless steel plates with an area of 10 cm2 of which each is spaced at an interval of one millimeter by insulating inserts, and an anode at the center and cathode at each side connected with a valve bridge. The electrical connection between the electrodes is in series. The electrode block is compact, and maintains separately the dual electrodes with the turntables and the threaded rods. The anti-flashback fuse consists of a sealed transparent plastic box and two tubes, a short circuit for evacuation of gas, and a strip immersed in the water for the arrival of gas from the generator.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a device for saving fuel.    Pot (1)    Screw cap (2)    Flat joint (3)    Rubber pieces (4)    Tubular outlet. (5)