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The crankshaft is the component which transmits dynamical loading from cylinder pressure and inertial loads in engine operating conditions. Because of the crucial importance of its function, crankshaft fatigue life is desired to be higher than the predicted engine operating life. In this study, Puma I5 crankshaft dynamic simulation is performed with multi body dynamics technique. Fatigue safety factors are calculated with the dynamical loadings of engine operating conditions. The effects of single mass and dual mass flywheel on endurance limit are analyzed in this study.

Comfort ride appears as one of the challenging factors in today's competitive automotive sector. Noise level of the vehicle is an effective parameter for the comfort demand of the customer. Oil-pan is the component which transmits structural borne excitations from engine block to air. Improving the NVH performance of the pan by adding beads is a low cost approach and does not increase the mass. Aim of this study is to improve the stiffness of the Puma I5 engine oil pan assembly and to obtain satisfactory improvement in noise levels while keeping the mass of the oil-pan constant.