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Study of Engine Vibration Due to Piston Slap on Single Cylinder High Powered Engine
Technical Paper
2005-26-046
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SIAT 2005
Language:
English
Abstract
The piston slap is an important phenomenon in the engine, which governs the vibration, noise, and wear of liner surfaces. It occurs due to transverse and rotational motion of piston, which depends on clearance between piston and liner and is governed by geometry, mass and inertia properties of reciprocating parts, and gaseous loads. Piston slap is studied on single cylinder high-powered engine, which showed large vibrations and noise during the field trials. The classical methodology is used to determine secondary movement, contact forces and kinetic energy loss due to piston impact. The calculated result showed no major impact of piston on liner surfaces due to presence of hydrodynamic lubrication between two mating surfaces. The loss of kinetic energy due to the impact is of the order of 0.007 Nm, which is negligibly small. The calculated values were compared with measured field trial and engine dynamometer test results, and observed predominant frequency value of 36 Hz, which is much lower to normal piston slap frequency value of 200 to 400 Hz. In addition, the engine endurance experimental results showed no severe marks on the piston and liner surface. This clearly indicated that the problem is not due to piston assembly. The technique is extended to predict the wear of critical engine parts like piston and liner surface. Thus, the finite element method and piston transverse movement calculation technique is satisfactorily used to predict engine vibrations and noise due to piston slap.
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Citation
Nayak, N., Reddy, P., Aghav, Y., Sohi, N. et al., "Study of Engine Vibration Due to Piston Slap on Single Cylinder High Powered Engine," SAE Technical Paper 2005-26-046, 2005, https://doi.org/10.4271/2005-26-046.Also In
References
- Bradbury, “To Study the Mechanism of the Noise and Vibration Generation from the Piston Motion” Proc. of the Institution of Mechanical Engineers 18 1952
- Meier, A. A.T.Z. 54 6 1952
- Hempel, W. “Contribution to the Knowledge of the Piston Side Movement” MTZ 27 1 5 10 1996
- Griffiths, W. J. Skorecki “Some Aspects of Vibration of a Single Cylinder Diesel Engine” 1 354 1964
- Laws, A. M. Parker, D. A. Turner, B. “Piston Movement in the Diesel Engine” CIMAC 1973
- Relpert, P. Volgt, M. “Simulation of the Piston/Cylinder Behavior for Diesel Engines” SAE paper 2001-01-0563
- Bishop, G. R. Leavitt, A. H. “Performance Simulation of a Diesel Piston and Ring System” SAE Paper 750768
- Haddad, S. D. Tjan, K. T. “An Analytical Study of Offset Piston and Crankshaft Designs and the Effect of Oil Film on Piston Slap Excitation in a Diesel Engine” Mech. Machine Theory 30 2 271 284 1995
- Sander, W. Steildle, W. Wacker, E. “Piston Movement and its Influence on Noise of Automotive Engines” SAE Paper 790272
- Wilson, R. Fawcett, J.N. “Dynamics of the Slider - Crank Mechanism with Clearance in the Sliding Bearing” Mech. machine theory 9 2 61 80 1974
- Priebsch Krasser “Simulation of Vibration and Structure Borne Noise of Engines- A Combined Technique of FEM and Multi Body Dynamics” CAD-FEM User's meeting 1998
- Stuecklschwaiger, W. Schiffbaenker, H. Brandl, F.K. “Improving the Noise Quality of Combustion Engines” SIA -congress Lyon, France 1993
- Haddad, S. D. “Theoretical Treatment of Piston Motion in I.C Piston Engine for the Prediction of Piston Slap Excitation” Mech. Machine Theory 30 2 253 269 1995
- Lakshminarayanan, P. A. et al. “Generalised Boundary Conditions for Diesel Engine Pistons” SAE Mobility Conference, Chennai, SAE 2001-28-0009
- AVL “GLIDE” Reference Manual 2003
- “Working Model-2D” Basic Manual 1995