In an internal combustion engine, air at atmospheric pressure and a temperature

Question

In an internal combustion engine, air at atmospheric pressure and a temperature of about 20 C is compressed in the cylinder by a piston to 18.0 of its original volume (compression ratio 8.0).

Part A

Estimate the temperature of the compressed air, assuming the pressure reaches 38 atm .

In an internal combustion engine, air at atmospheric pressure and a temperature of about 20 C is compressed in the cylinder by a piston to 18.0 of its original volume (compression ratio 8.0).

Part A

Estimate the temperature of the compressed air, assuming the pressure reaches 38 atm .

Explanation / Answer

P1V1/T1 = P2V2/T2

=> 1 x 1/(293.15) = 38 x (1/8)/T2

=> T2 = (38/8) x 293.15 = 1392.4625 K = 1392.4625 - 273.15 = 1119.3125 C

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