23 Sep '12, 12pm

Audi developing electric biturbo for enhanced performance at lower engine speeds

Audi developing electric biturbo for enhanced performance at lower engine speeds

Audi developing electric biturbo for enhanced performance at lower engine speeds 23 September 2012 Components of the electric biturbo system on the 3.0L V6 TDI diesel. Click to enlarge. Among the technologies it is developing to improve the fuel consumption of gasoline and diesel engines, Audi is working on an electric biturbo system in which a secondary compressor boosts the main turbocharger at lower engine speeds. Turbochargers are typically driven by energy from the exhaust—i.e., starting from very low revs, the rise in boost pressure and therefore torque becomes gradually greater only as the exhaust energy increases. The electric biturbo makes it possible—independently of the exhaust energy available—to build up charge pressure quickly and achieve high levels of torque even at very low revs. In advanced diesel development at Audi’s site in Neckarsulm, engineers have b...

Full article: http://www.greencarcongress.com/2012/09/biturbo-20120923....

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