ur-cylinder, four-stroke, Otto cycle engine takes air at 100 kPa and 50 C, and is limited to a maximum  cycle temperature of 1500 C. Each cylinder has a bore of 3.5 cm, and each piston has a stroke of 4 cm.  The minimum enclosed volume is 10 percent of the maximum enclosed volume. Use constant specific  heats at room temperature, calculate the thermal efficiency of the cycle.

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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.