TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Device: In the device, the cup portion is coupled to the second end of the canister such that a seal is created between the cup portion and the canister, where the only fluid access to the inner cup volume is through the apertures. The device further comprises a gas outlet and a gas inlet coupled to the first end of the canister; and a fill tube, where the canister is filled with water through the fill tube. The amount of water within the canister is a predefined amount, the canister comprising a fill gauge to designate the predetermined amount of water, where the fill gauge is a float valve. The device as well comprises a power source, where the power source is electrically connected to the conductive members through wires. The hydrogen generator operates in response to supplying current from the power source through the conductive members. Electrolysis is performed within the inner cup volume and the canister volume in response to running current through the conductive members, where the conductive members are at least partially submerged in water, where a percolation effect of electrolysis is created in response to electrolysis being performed in the inner cup volume. Moreover, a greater amount of hydrogen is produced by the hydrogen generator in response to the combination of the electrolysis having a percolation effect in the inner cup volume and the electrolysis in the canister volume. The pressure in the canister is maintained at approximately ambient pressure in response to circulation of air through the outlet and inlet valves. Preferred Method: Using the hydrogen electrolysis device with the vehicle further comprises operating the hydrogen electrolysis device in response to starting the vehicle engine; filling the canister of the hydrogen electrolysis with water; and refilling the canister when the water level drops below a certain predetermined level. Preferred Vehicle: In the vehicle, the hydrogen electrolysis generator is in fluid communication with the air intake of the vehicle engine and a polyvinyl chloride (PVC) valve of the vehicle engine. The hydrogen is produced by the hydrogen electrolysis generator in response to operation of the vehicle engine. The vehicle engine operates with greater efficiency in response to delivery of hydrogen to the vehicle engine.