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Hmm No doubt you probably know more than I do but the last part about temperature difference is logically confusing to me.
a perfectly efficient engine will be ambient temperature. Ever erg of energy used to "heat" something is energy NOT USE to "move" something. ie wasted energy less efficient.
Can you clarify? its my understanding that heat = bad because heat is not whats moving the car so its wasted energy.
BUT I also know that a HOTTER energy is more efficient. at one time they were trying to make a ceramic engine so they could use HIGHER temperatures but it was too brittle.
so I am confused.
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