Automobiles and trucks consume a major portion of the energy used for transportation in the US. They generate a
significant amount of the emissions that contribute to air pollution. During the past few years, research on cleaner burning
alternate fuels has been aimed at improving engine efficiencies and decreasing emissions that pollute the environment. This
research was devoted to the study of the performance of I. C. engines with enriched oxygen air fueled by gasoline and
natural gas. we study the feasibility of gas separator to supply oxygen enriched air for vehicle applications. A single
cylinder, 4-stroke, spark-ignition engine was used in the program to evaluate the effect of enriched oxygen air on engine
performance and exhaust emissions. The oxygen content in the intake air was varied between 21% and 25%. The effects of
oxygen enrichment are reviewed in terms of volumetric efficiency, power output, specific fuel consumption, fuel conversion
efficiency, exhaust gas temperature, and exhaust emissions.
