In present word of industrialization with so many industries and millions of automobiles running on ic engines with their ever-increasing numbers all running on petroleum based products are facing a major threat of extinction of these petroleum reservoirs. Internal Combus on Engine (ICE or IC Engine): An internal combus on engine, somemes referred to as an ICE or IC engine, is a kind of heat engine in which fuel is burnt with the aid of an oxidant, usually air, in a combus on chamber that is an essen al part of the working fluid flow circuit. The expansion of the hot, high-pressure gases produced during combus on acts directly on a part of an internal combus on engine. In most cases, the force is received by a rotor (Wankel engine), gas turbine blades (piston engine), nozzles (jet engine) or pistons (piston engine). This force transforms chemical energy into kine c energy, which drives, moves, or powers whatever the engine is a ached to. It moves the component over a distance to do this. Therefore, there is need of some alternative fuel which can replace petroleum-based fuels in an effective manner and that fuel should also be available in abundance and can b used in existing type of ic engines without much modification work. On exploring our possibilities for an alternative fuel for ic engines we can easily vote for Hydrogen Gas Based Engines. These types of engines are highly efficient in nature and do not require much modification work. One biggest limitation of Hydrogen Gas Based Engine is low volumetric efficiency, but we can overcome this with the use of oxygen enriched air and also with pure moist oxygen. This step will also help in reducing emission related problems associated with such type of engines.