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Yes. The heat of combustion is an absolute indicator of the maximum amount of energy available, so, to me, that means that we are down to changing the coolant flow rate.Jay_ said:Okay. So that means its the coolant energy that is higher than the actual number. And since we have everything that is makes sense, we are down to changing the coolant flow rate?
The maximum horsepower that the car engine/gasoline is capable of delivering is measured on a dynomometer with the engine red lined in low gear and a huge torque applied to the wheels. Under these conditions, we are expecting a much much greater consumption of gasoline and a much greater measured mechanical power, on the order of 100's of kW. And the combustion energy will have to be substantially greater than this. And the energy removed by the radiator will also have to be high (if the car is run under these conditions for any significant interval of time). So 70 kW for the radiator cooling is not unreasonable under extreme conditions. But, under ordinary cruising conditions, it must at least be much less than the total energy delivered by the gasoline.
Chet