TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred System: The water includes potassium hydroxide. The hydrogen reactor comprises sets of plates, where each of the sets of plates comprises neutral, positively charged, and negatively charged plates disposed in spaced and predetermined position relative to one another to define the predetermined stacked array. The system further comprises jets, where each jet is disposed and structured to direct a mixture of the water electrolyte and metal particles between and along a length of the neutral, positively charged, and negatively charged plates of a different one of the sets of plates. It further comprises water maintained within the chamber of sufficient quantity to totally submerge the sets of electrode plates. The mixture of water issuing from each of the jets is under sufficient pressure to sweep gas bubbles formed on the electrode plates of each of the set of electrode plates. Gas formed on the metal particles is substantially separated from it upon exiting the water maintained within the chamber. The system further comprises a gas delivery assembly disposed in interconnecting fluid communication between the chamber of the hydrogen reactor and an intake manifold of the internal combustion engine. The gas delivery assembly includes a first gas outlet and a second gas outlet both disposed in gas delivering relation with the intake manifold. The first gas outlet is disposed to delivery gas from the hydrogen reactor to the intake manifold downstream of an intake valve associated with the intake manifold. The second gas outlet is disposed to deliver gas from the hydrogen reactor to the intake manifold upstream of the intake valve associated with the intake manifold. The gas delivery assembly further comprises a particle separation assembly disposed along a path of travel between the chamber of the hydrogen reactor and the intake manifold, the particle separation assembly structured to remove water from gases entering the intake manifold. The gas delivery assembly disposed along the path of travel of the gases and structured to regulate gas flow into the intake manifold dependent, at least in part, upon vacuum levels within the intake manifold. The system further comprises main control assembly and the source of electrical energy, the main control assembly structured to regulate electrical current flow to the electrode plates arranged in a predetermined stacked array within the chamber of the hydrogen reactor. The system is in combination with an internal combustion engine and positioned to generate and delivery hydrogen and oxygen gases to an intake manifold of the internal combustion engine.