Are internal combustion engines more efficient on cold days?

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occurred Jan 29, 2015 at 16:13

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occurred Jan 29, 2015 at 5:33

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Are engines more efficient inon cold days?

According to Carnot efficiency formula $\eta=1-T_C/T_H$, can we say that the engines of cars are more efficient inon cold days where the $T_C$ (temperaturethe temperature of surroundingthe surroundings) is less than on hot days?

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asked Jan 28, 2015 at 13:24

richard

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Are engines more efficient in cold days?

According to Carnot efficiency formula $\eta=1-T_C/T_H$ can we say that the engines of cars are more efficient in cold days where the $T_C$ (temperature of surrounding) is less than hot days?

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Are internal combustion engines more efficient on cold days?

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Are engines more efficient in cold days?