An SI engine operating at WOT on a four-stroke air-standard cycle has cylinder conditions at the start of compression of 100°F and 14.7 psia. Compression ratio is and the heat added during combustion...

An SI engine operating at WOT on a four-stroke air-standard cycle has cylinder conditions at the start of compression of 100°F and 14.7 psia. Compression ratio is and the heat added during combustion is During compression the temperature range is such that a value for the ratio of specific heats would be correct. During the power stroke the temperature range is such that a value of would be correct. Use these values for compression and expansion, respectively, when analyzing the cycle. Use a value for specific heat of which best corresponds to the temperature range during combustion.

Calculate:

(a) Temperature at all states in cycle. [°F]

(b) Pressure at all states in cycle. [psia]

(c) Average value of k which would give the same indicated thermal efficiency value as the analysis in parts (a) and (b).