An Indicator diagram taken on a diesel engine shows that the compression curve follows the law PV1.4 = Constant. At two points laying on the compression curve at 1/8th and 7/8th of stoke, the pressure are respectively 1.8 bar and 18 bar. Determine the compression ratio of this engine

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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.