Cylinder conditions at the start of compression of a four-stroke cycle SI engine are 27°C and 100 kPa. The engine has a compression ratio of and heat addition from combustion is Calculate: (a)...

Cylinder conditions at the start of compression of a four-stroke cycle SI engine are 27°C and 100 kPa. The engine has a compression ratio of and heat addition from combustion is

Calculate:

(a) Temperature and pressure at each state of the cycle, using air-standard Otto cycle analysis with constant specific heats. [°C, kPa]

(b) Indicated thermal efficiency in part (a). [%]

(c) Temperature and pressure at each state of the cycle, using any standard air tables that are based on variable specific heats as functions of temperature (e.g., reference [73]). [°C, kPa]

(d) Indicated thermal efficiency in part (c). [%]