The compression ratio of a 4-cylinder and 4-stroke Otto engine is 10, and the fluid circulating in the cycle is m = 0.002 kg / turn. At the beginning of the compression process, the air temperature is 290 K, the pressure is 100 kPa. The highest temperature of the cycle is 2000 K. Assuming that the engine works according to the ideal Otto cycle, calculate the number of revolutions (revolutions / minute) required to produce 100 kW of power. Cv = 0.7165 kJ / kg K.

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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.