Renault's F1 Anti-Lag System Uncovered

Turbo Anti-Lag Systems are well known today, but at the start of the first Formula 1 Turbo Era there was one, you've never even heard about - the Dispositif Pre*rotation Variable - or short "DPV" engineered by Renault's Formula One engine genius - Jean Pierre Boudy.
It's a very clever way to spool up a turbocharger, maybe just as clever as the Subaru “Jet Engine” - Rocket Anti-Lag - but with less flames, much older and based on the Russian Swirl Throttle.
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Books worth reading:
"The Secret Horsepower Race" by Calum Douglas
"Forced Induction Performance Tuning" by A. Graham Bell
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