https://www.msn.com/en-us/autos/ent...in-america/ss-BBH2AdX?ocid=spartandhp#image=1
"Unlike a conventional supercharger, which is powered via a pulley attached to the crankshaft, Audi’s electric unit is spooled by a 7-kW DC motor essentially taking the place of a turbocharger’s turbine. The motor is connected to the compressor via a shaft, and it’s neither exhaust-driven like a turbocharger nor crank-driven like a supercharger. It can spin up to 70,000 rpm in less than a quarter of a second."
"Unlike a conventional supercharger, which is powered via a pulley attached to the crankshaft, Audi’s electric unit is spooled by a 7-kW DC motor essentially taking the place of a turbocharger’s turbine. The motor is connected to the compressor via a shaft, and it’s neither exhaust-driven like a turbocharger nor crank-driven like a supercharger. It can spin up to 70,000 rpm in less than a quarter of a second."
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