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A six-cylinder, four-stroke, spark-ignition engine
Chapter 9, Problem 936E(choose chapter or problem)
A six-cylinder, four-stroke, spark-ignition engine operating on the ideal Otto cycle takes in air at 14 psia and 1058F, and is limited to a maximum cycle temperature of 24008F. Each cylinder has a bore of 3.5 in, and each piston has a stroke of 3.9 in. The minimum enclosed volume is 9.8 percent of the maximum enclosed volume. How much power will this engine produce when operated at 2500 rpm? Use constant specific heats at room temperature.
Questions & Answers
QUESTION:
A six-cylinder, four-stroke, spark-ignition engine operating on the ideal Otto cycle takes in air at 14 psia and 1058F, and is limited to a maximum cycle temperature of 24008F. Each cylinder has a bore of 3.5 in, and each piston has a stroke of 3.9 in. The minimum enclosed volume is 9.8 percent of the maximum enclosed volume. How much power will this engine produce when operated at 2500 rpm? Use constant specific heats at room temperature.
ANSWER:Step 1 of 6
A six-cylinder, four-stroke, spark-ignition engine operating on the ideal Otto cycle is considered. Refer to figure below.
The power produced by the engine is to be determined.
Assumptions are
1. The air-standard assumptions are applicable.
2. Kinetic and potential energy changes are negligible.
3. Air is an ideal gas with constant specific heats.
The properties of air at room temperature are 
