It is an advantage for an automobile engine to run at a high temperature because
A) A high operating temperature cools off the fuel before ignition
B) gasoline only ignites under high temperature conditions
C) it allows the use of lighter engine components made from aluminum
D) its efficiency is higher, since the temperature difference is what dictates efficiency
A) A high operating temperature cools off the fuel before ignition
B) gasoline only ignites under high temperature conditions
C) it allows the use of lighter engine components made from aluminum
D) its efficiency is higher, since the temperature difference is what dictates efficiency
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No, it's D. Efficiency is highest around the boiling temperature of water.
That's why car engines have a thermostat that will regulate the temperature of the coolant up near boiling point, but also run pressure in the cooling system to elevate the actual boil point temperature away from the natural boil point temperature, so as to give a better working range.
That's why car engines have a thermostat that will regulate the temperature of the coolant up near boiling point, but also run pressure in the cooling system to elevate the actual boil point temperature away from the natural boil point temperature, so as to give a better working range.
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d