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

다국어 초록 (Multilingual Abstract)

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.

목차 (Table of Contents)

• ABSTRACT
  
• 1.INTRODUCTION
  
• 2.PISTON SKIRT PROFILE OF FLAT AND BARELL TYPES
  
• 3.PISTON SECONDARY MOVEMENTS
  
• 4.HYDRODYNAMIC LUBRICATION IN THE BORE CLEARANCE
  
• 5.RESULTS
  
• 6.CONCLUSION
  
• ACKNOWLEDGEMENT
  
• REFERENCES

참고문헌 (Reference)

1 "Fundamentals of Fluid Film Lubrication" McGraw-Hill (8709907) : 1995

2 ". Simulation ofsecondary dynamics of articulated and conventionalpiston assemblies. SAE Paper No. 920484." 1992

3 ". A comprehensivemodel of piston skirt lubrication. SAE Paper No.920483." 1992