EFFECTS OF SKIRT PROFILES ON THE PISTON SECONDARY MOVEMENTS BY THE LUBRICATION BEHAVIORS

  • Jang, S. (School of Mechanical and Automotive Engineering, Kookmin University) ;
  • Cho, J. (Graduate School of Automotive Engineering at Kookmin University, Presently at Korea Institute of Machinery & Materials, KIMM)
  • 발행 : 2004.03.01

초록

Secondary movements of piston in the bore clearance are closely related to the side impact to the engine block as well as many tribological problems. Some of the major parameters that influence these kinds of movements are piston profile shapes (barrel and flat), piston pin offsets and the magnitudes of bore clearances. In our study, computational investigations are performed about the piston movements in the bore clearance by changing the skirt profiles and piston offsets. In this work, it is found that curved profile and larger offset magnitude to thrust side provide better performance that has low side impact during the engine cycle.

키워드

참고문헌

  1. Dursunkaya, Z. and Kehbar, R. (1992). A comprehensive model of piston skirt lubrication. SAE Paper No. 920483
  2. Dursunkaya, Z. and Kehbar, R. (1992). Simulation of secondary dynamics of articulated and conventional piston assemblies. SAE Paper No. 920484
  3. Hamrock B. J. (1995). Fundamentats of Ftuid Fitm Lubrication. McGraw-Hill. New York
  4. Ohta, K. and Yamamoto, K. (1987). Piston slap induced noise and vibration of internal combustion engines. SAE Paper No. 8709907