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, Volume 78, Issue 6, pp 52–57 | Cite as

Dynamic Shaft Seal with High Vacuum Capability

  • Andreas PaulischEmail author
  • Markus Heilig
  • Petar Knezic

The friction impact of radial shaft seals influences an engine's efficiency. Federal-Mogul Powertrain's innovative dynamic seal design called Microtorq not only helps to reduce parasitic losses, caused by internal friction. This dynamic sealing solution also offers operating features required of modern fuel-efficient engines, such as a high level of vacuum capability.

Less Frictional Torque and Reliable Sealing

Parasitic losses owed to internal friction increase fuel consumption and thus CO2emissions. Therefore, engine designers seek to minimise these losses. However, coming up with adequate solutions to further reduce friction is a challenge in the case of crankshaft seals because of potentially conflicting goals: Traditional sealing designs are based on a relatively high level of radial pressure acting on the sealing lips in contact with the shaft. This functional principle results in a corresponding level of friction. A lower level of radial pressure was until now not considered...

Copyright information

© Springer Fachmedien Wiesbaden 2017

Authors and Affiliations

  1. 1.Springer Fachmedien Wiesbaden GmbHWiesbadenGermany
  2. 2.Springer Fachmedien Wiesbaden GmbHWiesbadenGermany
  3. 3.Springer Fachmedien Wiesbaden GmbHWiesbadenGermany

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