A four-cylinder, four-stroke engine has a displacement volume of 300 cc (cubic centimeter) per cylinder. The compression ratio of the engine is 10 and operates at a speed of 3000 rev/min. The engine is required to develop an output of 40 kW at this speed. Calculate the cycle efficiency, the necessary rate of heat addition, the mean effective pressure, and the maximum temperature of the cycle. The inlet conditions are 1 .1bar and 30 deg.C, respectively. Analyze using the Otto cycle and Diesel cycle. Compare the results.

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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.