Emission from engine exhaust is series problem for environment point of view. For that search for alternative fuel is encouraged. The main problems with the use of neat vegetable oils in diesel engines are higher smoke levels and lower thermal efficiency as compared to diesel. The problem can be tackled by inducting a gaseous fuel in the intake manifold along with air. Experiments were conducted to evaluate the performance emission and combustion parameters in a CI engine primarily fuelled with an emulsion of bio-oil produced from pyrolysis of biomass source and methyl ester of karanja with different quantities of hydrogen being inducted. While enriching hydrogen at different flow rates increasing BTE and dual fuel operation reduces the HC and CO emissions considerably,Since hydrogen has no carbon, burning of hydrogen different flow rates along with wpo10 is reduced HC and CO emissions compared to wpo10 without hydrogen.while hydrogen inducting higher heat release rate is achieved in advance due to instantaneous combustion of gaseous fuel.