An ideal Otto cycle operates on 0.1 lb/s of air from 13psia and 130oF at the beginning of compression. The temperature at the end of combustion is 5000oR; compression ratio is 5.5. Using hot air standard assumption, find V1, P2, T2, V3, T4, and P4 ; determine the hear added and rejected, Wnet, thermal efficiency, and the equivalent horsepower. Show T-S and P-V diagrams.

Q: Determine the net work.

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IC engines

The term "engine" indicates a mechanical device/machine used to convert input energy to a specific mechanical output. The input energy may be in the form of chemical energy, thermal energy, or so on and mechanical output is in the form of mechanical energy (work done). Generally, the engines classify into two groups which are internal combustion type and external combustion type, and further, these two types can be classified into two types that are reciprocating and rotary engines.