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Pneumatic Valve Springs

  • Kartonierter Einband
  • 260 Seiten
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High Quality Content by WIKIPEDIA articles! Pneumatic valve springs are metal bellows filled with compressed air used as an altern... Weiterlesen
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Beschreibung

High Quality Content by WIKIPEDIA articles! Pneumatic valve springs are metal bellows filled with compressed air used as an alternative to the metal wire springs used to close valves in high-speed internal combustion engines. This system was introduced in the mid-1980s in Renault turbocharged 1.5 litre Formula One engines. Racing engines often fail at high rotational speeds because mechanical springs are unable to retract the valves quickly enough to provide clearance for the piston. Renault's pneumatic valve technology replaced steel springs with light weight compressed air bellows. These could retract valves more quickly and reduce the possibility of piston-valve interference as long as pressure could be maintained. Additionally, the amount of seat tension required to keep a coil sprung valve under control results in greater peak lift loading, with added stress to the entire valvetrain as a result. Pneumatic systems, sharing a common reservoir of pressure retain a more static level of force, controlling the valve effectively, without any attendant peak lift load increase.

Produktinformationen

Titel: Pneumatic Valve Springs
Editor:
EAN: 9786131979330
Format: Kartonierter Einband
Genre: Physik & Astronomie
Anzahl Seiten: 260