The Audi SQ7 is powered by a 4.0L sequential turbo diesel V8. It’s good for about 435 horsepower and 660 lb-ft of torque, which is great, but the fun doesn’t stop there.
source/image: Engineering Explained
In order to eliminate unresponsive nature of turbocharged engines, Audi has fitted the car with an electric supercharger, the first in a production vehicle. Watch the video from Engineering Explained for more info:
An electric supercharger performs the same function as an exhaust-driven turbo or an engine-driven supercharger, cramming high-pressure air into the engine’s intake to maximize power output.
This means adding an onboard 48V system that can handle the additional power requirements of the electric powered compressor (EPC), which at full throttle can produce 7 kW of power, enough to spin the compressor wheel up to 70,000 RPM in just a quarter of a second. Full details of how this system works in the video, as well as animations.