The high performance Audi SQ7 will be the first production implementation of the company’s electric turbocharger technology.
Ulrich Hackenberg, board member for technical development, spoke to Autocar and said, “The new Q7 will be available in the market next year but the electric turbo will come a bit later in the Audi SQ7 available in 2016.”
The new SQ7 will feature an electrically driven turbocharger that helps to combat turbo lag, and is similar to the system that we experienced this week in the RS5 TDI Concept.
Unlike the system in the RS5 TDI Concept, though, the SQ7’s drivetrain will be simpler and feature just a solitary exhaust gas driven turbo that’s complemented by a electric turbocharger. This electric charger is run by a 7kW electric motor that’s plugged into a separate 48V electrical system, which is recharged via regenerative braking.
When the engine is running at low speeds, the electric turbo, which is capable of reaching maximum boost in just 250 milliseconds, is able to force feed air into the engine. At higher engine speeds, a valve opens to bypass the electric turbo and allow the regular turbo to come into effect.
When the SQ7 takes a bow in 2016, it will be the first S variant of the Q7 SUV and the second diesel powered S model, after the SQ5. The electric turbo SQ7 will be one of two next-generation Q7 variants to feature a hi-tech drivetrain, with the other being the Q7 e-tron.
The Q7 e-tron will feature a 275kW/700Nm diesel-electric hybrid drivetrain that can manage around 50km of electric-only motoring and will return sub-4L/100km fuel economy figures.