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, Volume 76, Issue 2, pp 32–35 | Cite as

Nanodiamond Reinforced PTFE Composite Coatings

  • Yoolkoo Kim
  • Seong Jin Kim
  • Jaeyoung Lee
  • Dae-soon Lim
Development Friction

Reducing weight, friction, and driving resistance is crucial for an enhanced fuel economy. The friction between the piston and cylinder is one of the main factors for energy loss in combustion engines. Hyundai has developed a new type of coating technology for piston skirts: a PTFE (polytetrafluoroethylene) and nano-sized diamond composite.

Piston Construction for High Performance

The mega trend in the automotive industry is to develop highly effective engine systems to meet customers’ demands for oil cost saving and CO 2emission reducing. Downsizing is one of the possible solutions to reduce friction and weight as well as to improve mechanical performance. Smaller engine sizes, however, result in severe operating conditions. The moving components of powertrain systems suffer tribological problems and particularly energy loss due to the friction between pistons and cylinders. 35 % of the total friction loss is generated between the piston and the cylinder. Since reducing friction...


PTFE MoS2 Solid Lubricant Diamond Particle Cylinder Liner 
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Copyright information

© Springer Fachmedien Wiesbaden 2015

Authors and Affiliations

  • Yoolkoo Kim
    • 1
  • Seong Jin Kim
    • 1
  • Jaeyoung Lee
    • 1
  • Dae-soon Lim
    • 2
  1. 1.Hyundai Motor CompanySeoulSouth Korea
  2. 2.Korea UniversitySeoulSouth Korea

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