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homework 3 question 4 of 8 4 1250 points 2...

Question: homework 3 question 4 of 8 4 1250 points 2...

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homework 3 Question 4 (of 8) 4. 12.50 points 2 out of 3 attempts A spark ignition engine has a compression ratio of 9.4, an isentropic compression efficiency of 85.9 percent, and an isentropic expansion efficiency of 96.0 percent. At the beginning of the compression, the air in the cylinder is at 13 psia and 60°F. The maximum gas temperature is found to be 2,300°F by measurement. Determine the specifie heat addition, the thermal efficiency, and the mean effective pressure of this engine when modeled with the Otto cycle. Use constant specific heats at room temperature. 4in 254.2 th 49.3 MEP-152 . 3 Assistance Check My W View Hint Question Ha Report a Pr Btu/lbm Round your final answer to one decimal place. % Round your final answer to one decimal place. psia Round your final answer to one decimal place. View Details of Last Check Answer References eBook & Resources FI F2 F3 F5

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