INTRODUCTION OF HYDROGEN OXYGEN MIXTURE AT DIFFERENT INJECTION PRESSURES OF DIESEL ENGINES

Day by day fossil fuel energy reserves are depleting and the cost of the fuel was increasing. This is because of rapid usage of fossil fuel and it also causes increase of pollution, global warming and fuel scarcity. So this is the time to search for alternative fuels. Some of the alternative fuels are Ethanol, methanol, natural gas, bio diesel blends and hydrogen etc. Hydrogen was identified one of the best alternative fuel among all these because it having so many advantages like (high heating value, clean fuel, renewable energy source, absolutely no pollution and available at cheap price), It has the potential to supplement and if possible replace the fossil fuels for the production of energy in the near future, applicable to fuel for vehicle and rocket, internal combustion engine using hydrogen storage, direct combustion for heat and so on. Water electrolysis is a key technology to produce hydrogen and is one of the best methods. In diesel engine injection pressure plays an important role. In this experimental study, effect of injection pressure on engine performance and exhaust emissions has been investigated. Experiments has done on kirloskar constant speed single cylinder 4 stroke water cooled diesel engine, while the engine is running on electrolytically generated hydrogen oxygen mixture .The experiments are conducted by changing the injection pressure from 175 bar to 375 bar with an interval of 50 bar by applying the minimum load to maximum load of 17.8kg on rope brake dynamometer. Hydrogen oxygen mixture is continuously supplied to the engine at a constant rate of 500 ml/min According to the results maximum performance has been obtained at 300 bar and at high injection pressure these values are O2, SO2 and CO2 minimum. At lower injection pressure noX) emissions and smoke levels is very low. As the injection pressure increases efficiency will increase, and exhaust emissions will decrease.