Design and Fabrication of Variable Compression Ratio Engine

Variable compression ratio is a technology to adjust the compression ratio of an internal combustion engine while the engine is in operation/manually. In scope to lower compression ratio at turbo charging to prevent knocking, switch between efficient or powerful engine, use alternative fuels with varying octane or Cetane numbers and improved NOX particulate formation. The study comprises of sourced Single-cylinder Petrol engine from Suzuki Access 125 cc. The mechanism used is simple Sliding slotted cavity mechanism, for changing crankshaft’s position. A sophisticated lever-link mechanism is used to control the magnitude of crankshaft’s position controlled by power screw manually or actuator. Further results are verified in motion simulation software and brake dynamometer.