Thermodynamic Analysis of Turbocharged Spark Ignition Engine (Otto Cycle) - Part I - Heat Energy Available in the Exhaust Gases

This paper, describes an attempt to calculate the amount of specific net work, efficiency and also heat energy available in the exhaust gases of a turbocharged Spark Ignition engine (ideal cycle) that can be interfaced with an absorption refrigeration unit. The working fluid is taken to be air. Based on the thermodynamics laws the variation of specific net work and efficiency of the engine as a function of the cycle volume ratio, cycle temperature ratio and compressor pressure ratio are calculated. Then by writing a heat balance equation for the cycle the amount of heat available in the exhaust gases is determined.