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Dynamic Simulation of Piston Motion to Predict the Piston Slap for Single Cylinder Four Stroke Engines


Pavan Kumar H , Adichunchanagiri Institute of Technology, Chikamagalur, Karnataka, India; Prashanth N, Adichunchanagiri Institute of Technology, Chikamagalur, Karnataka, India


Piston Secondary Motion, Piston-Slap, CATIA, ANSYS, Multi Body Dynamics


In recent years environmental norms have been made mandatory for new design or design optimizations of any combustion based engines and prime movers. The greater demand for quieter engines and hence the technology proved to be the answer for these pollution regulations. Piston slap is still an important mechanical excitation source and noise generator in IC engine. To understand the complete and complex dynamics of piston, connecting rod and crank shaft, a three dimensional modeling and dynamic simulation approach is required. In the present work the study of piston-slap due to mechanical impact with a three-dimensional finite element model is carried out. The results are taken to predict the behaviour of the piston inside the combustion chamber and to predict the piston lateral motion which causes the piston-slap. The particulars utilized in this study of piston belongs to four stroke single cylinder Bajaj pulsur 150 cc bike engine. The geometrical modeling of the piston is done using CATIA V-5 modeling tool, finite element software (ANSYS) is used to implement physics and carryout simulations. The stress and displacement results are viewed and analyzed. These values are interpreted to predict piston-tilt due to the secondary motion of the piston and the piston-slap when piston reciprocates between TDC and BDC.

Other Details

Paper ID: IJSRDV3I60616
Published in: Volume : 3, Issue : 6
Publication Date: 01/09/2015
Page(s): 1120-1125

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