Torsional Vibrations Analysis of the Set of Linear Six Cylinder Diesel Engine Crankshaft and Validation of Its Results

Torsional vibrations analysis of the crankshaft at the diesel engine set is accomplished by AVL EXCITE software based on Holzer method. The parameters such as natural frequencies of torsional system, oscillating torsional torques operated on the divers components of crankshaft, angular displacement of crankshaft in free condition from one side, misfiring conditions, heat dissipated power in damper and transitional torque to the flywheel have been investigated in this research. Simulation results of torsional vibrations in the crankshaft of engine are compared with the experimental results. This comparison illustrates a good accuracy in the results of torsional vibrations modelling.