Solution Found!
Answer: The Otto-cycle engine in a Mercedes-Benz SLK230
Chapter 20, Problem 7E(choose chapter or problem)
Problem 7E
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 γ = 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?
Questions & Answers
QUESTION:
Problem 7E
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 γ = 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?
ANSWER:Solution 7E
Problem (a)
Step 1:
Compression ratio r = 8.8
Ratio of heat capacity γ = 1.40
To find Ideal efficiency of the engine