Variable Compression Ratio (VCR) engine test can be used to determine the effect of Compression Ratio (CR) on the
performance and emissions of the engine. The combustion situation, when provided with a pressure transducer. The
performance frequency parameters like efficiencies, power, and specific fuel consumption are determined. The combustion
phenomenon is also observed through this work, we can find the optimum compression ratio for which the best performance is
possible.