The Otto-cycle engine in a Mercedes-Benz SLK230 has a compression ratio of 8.8. (a) What is the ideal efficiency of the engine? Use ? = 1.40. (b) The engine in a Dodge Viper GT2 has a slightly higher compression ratio of 9.6. How much increase in the ideal efficiency results from this increase in the compression ratio?
Solution 7E Problem (a) Step 1: Compression ratio r = 8.8 Ratio of heat capacity = 1.40 To find Ideal efficiency of the engine