Many people all over the world have home-built working devices that create HHO gas using very little power. The terms "Brown Gas" and "HHO" are used in this article as synonymous, although there is some minor technical debate as to the ratios of monatomic and diatomic gas within each, and "HHO" was once a trade name for Brown's Gas (it has now become a generic term like "Kleenex", as is written here for this purpose). The hydroxyl gas (HHO) was generated by the electrolysis process of different electrolytes with various electrode designs in a leak-proof Plexiglas reactor (hydrogen generator). Hydroxyl gas was used as a supplementary fuel in a four-cylinder, four strokes, and compression ignition (CI) engine without any modification and without the need for storage tanks. At mid and higher engine speeds; the HHO system with diesel fuel yields higher engine torque output compared to pure diesel engine operation unless HECU is added to the system. The main objective of this project is to acquire pure HHO gas for various applications example: for Vehicles. Majority of these works as reviewed focused more on the effective production of the HHO gas through Electrolysis technique. This Project work focuses on the Generation and analyzes of the HHO gas is produced that can be used for many applications.