A gasoline internal combustion engine can be modeled by an ideal Otto cyclethat has a compression ratio of 8.91. At the beginning of the compression process (state 1), airis at 100 kPa and 300 K. The heat transfer into the air during the constant-volume heat additionprocess (state 2 to 3) is 693.08 kJ/kg. Note: Consider constant specific heats of air at 300 K.   1 – Find the temperature in K before heat additionprocess ;A) 660 KB) 680 KC) 700 KD) 720 K 2 – Find the maximum temperature in K during thecycle A) 1625 KB) 1655 KC) 1685 KD) 1715 K3 – Find the maximum pressure in MPa during the cycle A) 4 MPaB) 4.5 MPaC) 5 MPaD) 5.5 MPa4 – Find the temperature in K before the heat rejection processA) 660 KB) 700 KC) 740 KD) 780 K

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. Note: Consider constant specific heats of air at 300 K.

 

1 – Find the temperature in K before heat addition
process ;
A) 660 K
B) 680 K
C) 700 K
D) 720 K
 2 – Find the maximum temperature in K during the
cycle 
A) 1625 K
B) 1655 K
C) 1685 K
D) 1715 K
3 – Find the maximum pressure in MPa during the cycle 
A) 4 MPa
B) 4.5 MPa
C) 5 MPa
D) 5.5 MPa
4 – Find the temperature in K before the heat rejection process
A) 660 K
B) 700 K
C) 740 K
D) 780 K