EFFECT ON PERFORMANCE AND COMBUSTION CHARACTERISTICS OF DIESEL ENGINE ENRICHED WITH HYDROGEN WITH VARIED PISTON BOWL GEOMETRY

In place of conventional fuels, there is a need to search an alternative fuel as the reserves of conventional fuels are decreasing due to increase in consumption. Hydrogen is considered as one of the best alternative fuels for internal combustion engines due to unique combustion properties. Gas motion inside the engine cylinder, which depends on combustion chamber geometry is highly influences the performance of any internal combustion engine. Hence an attempt is made to study the performance and combustion parameters of hydrogen enriched diesel engine using varied piston bowl geometry. Experiments are conducted on four stroke single cylinder water cooled diesel Engine at constant speed of 1500 rpm at different loads for different flow rates of hydrogen. It is observed that there is knocking tendency for flow rates above 6 lpm due to rise in temperature and peak pressures with addition of hydrogen.