Question: iii) The combustion engine is replaced by a fuel cell that produces electrical power that is fed to an electric motor. Assume that the

iii) The combustion engine is replaced by a fuel cell that produces

iii) The combustion engine is replaced by a fuel cell that produces electrical power that is fed to an electric motor. Assume that the electric machine shaft power is the same as the engine brake power, calculate the maximum heat rejected by the fuel cell. Assuming that the combined electric motor and power electronics efficiency is 90% and the fuel cell efficiency is 45% at full power. Comment on the implications for the cooling system and impact on the overall vehicle architecture. iv) List and explain 4 key requirements for a coolant fluid. [6 marks] [4 marks]

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