Analysis of Variable Crankshaft Geometries for a 6 Cylinder IC Engine

Using FEM analysis software, the purpose of this research project was to examine several crankshaft shapes applicable to an internal combustion engine with six cylinders. The primary objectives of the study were to determine the maximum loading that could be placed on the piston and the crankshaft rotations that correspond to that loading, as well as to investigate the stress distribution and factor of safety for various crankshaft diameters. The model was created with the help of the software CATIA, and it was examined with the help of the software ANSYS FEM analysis. According to the findings, the gas pressure that was present during the power stroke was the factor that had the most significant impact on the crankshaft. This led to a downward bending of the crankpin in the area that included the lubrication holes. According to the findings, the geometry with a crankshaft diameter of 50 millimeters, crankpin diameter of 42 millimeters, and crank web thickness of 13.5 millimeters had the lowest stress values and the highest factor of safety of 1.92 when subjected to heavy loading circumstances.