For Problems 1-4: A gasoline internal combustion engine can be modeled by an ideal Otto cycle...

 

Transcribed Image Text:

For Problems 1-4: A gasoline internal combustion engine can be modeled by an ideal Otto cycle that has a compression ratio of 8.91. At the beginning of the compression process (state 1), air is at 100 kPa and 300 K. The heat transfer into the air during the constant-volume heat addition process (state 2 to 3) is 693.08 kJ/kg, and heat removed from the air during the constant- volume heat rejection process (state 4-1) is 318.04 kJ/kg. Note: Consider constant specific heats of air with temperature, and evaluate the specific heat and k at 300 K. Problem 1 - Find the temperature in K before heat addition process (5 points); Isentropic You Isentropic BDC TDC Problem 2 - Find the maximum temperature in K during the cycle (5 points); Problem 3 - Find the maximum pressure in MPa during the cycle (5 points); Problem 4 - Find the temperature in K before the heat rejection process (5 points); For Problems 1-4: A gasoline internal combustion engine can be modeled by an ideal Otto cycle that has a compression ratio of 8.91. At the beginning of the compression process (state 1), air is at 100 kPa and 300 K. The heat transfer into the air during the constant-volume heat addition process (state 2 to 3) is 693.08 kJ/kg, and heat removed from the air during the constant- volume heat rejection process (state 4-1) is 318.04 kJ/kg. Note: Consider constant specific heats of air with temperature, and evaluate the specific heat and k at 300 K. Problem 1 - Find the temperature in K before heat addition process (5 points); Isentropic You Isentropic BDC TDC Problem 2 - Find the maximum temperature in K during the cycle (5 points); Problem 3 - Find the maximum pressure in MPa during the cycle (5 points); Problem 4 - Find the temperature in K before the heat rejection process (5 points);