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, Volume 79, Issue 9, pp 42–49 | Cite as

High thermal conductivity valve seat inserts and guides

  • Philippe Beaulieu
  • Sascha Orazem
  • Gunther Reissinger
  • David Woodward
Development Valve Gear

The thermal load of valves in combustion engines continues to increase. Most of the heat flowing from the valve into the cylinder head passes through valve seats and guides. New materials and product developments with high thermal conductivity show considerable potential for reducing the temperatures of valves. As a study by Federal-Mogul reveals, this can be used in many ways to lower component load, improve combustion and reduce emissions when designing viable future powertrains.

Reasons for Optimizing Thermal Conductivity

Due to turbocharging and downsizing, the specific engine outputs have continuously increased in recent years. In addition, stricter exhaust gas requirements and more realistic driving cycles result in higher exhaust gas temperatures, which affect the components in the exhaust gas stream. Valve Seat Inserts (VSIs) and Valve Guides (VGs) convey a large part of the valve’s heat load into the cylinder head and the cooling water. Cooled integrated exhaust manifolds...

Notes

Thanks

The authors thank all HTC project participants in Coventry (UK), Waupun (USA), Burscheid (Germany), Barsinghausen (Germany) and Shanghai (China), especially Marcel Christoffel (engine tests and wear diagrams), Marco Hahn and Marc Amarotico (grinding and coating tests) as well as Antonius Wolking and team (valve FEM calculations).

References

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Copyright information

© Springer Fachmedien Wiesbaden 2018

Authors and Affiliations

  • Philippe Beaulieu
    • 1
  • Sascha Orazem
    • 2
  • Gunther Reissinger
    • 2
  • David Woodward
    • 1
  1. 1.Federal-Mogul PowertrainCoventryUnited Kingdom
  2. 2.Federal-Mogul PowertrainBurscheidGermany

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