In an air standard Otto cycle the maximum and minimum temperature are 1400 C and 15 C.the heat supply per Kg of air is 800 Kj .calculate the compression ratio and the thermal efficiency .also the ratio of maximum to minimum pressure

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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.