The flame speed of hydrogen is higher than the gasoline and the ignition energy required is very low but the auto ignition temperature of hydrogen is higher than that of gasoline. So in the combustion of the hydrogen, how we can calculate the Lift and Dwell for the both intake and exhaust cam? What changes will be needed in the cam design?
The breathing pattern of engine has significant effect on combustion, performance and emission. Engine designs are optimized for specific fuel. Among the optimize parameters are the cam profile. Referring to some characteristics of hydrogen-air reaction it is not easy to give theoretical reference for designing cam because the engine geometry also need to be considered. I would suggest that you use simulation tool with your engine geometry to predict engine response to hydrogen combustion by varying the cam profile. Some useful software include AVL Boost. It is easy to change the cam profile and predict engine performance and emission.
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