Audi S6 and S7 gets new electric-powered compressor for better performance

By CARSIFU | 26 March 2020

LOS ANGELES: Audi engineers has raised the performance bar further, with the new Electric-Powered Compressor (EPC) in the 2020 Audi S6 and S7 models.

The EPC comes paired to the 2.9-liter, twin-turbocharged TFSI V6 engine. It consists of an electric motor with a small turbine that helps quickly build turbo boost pressure, sharpening throttle response and reducing any noticeable turbo “lag.”

The EPC takes advantage of the latest-generation 48V mild hybrid electrical architecture, supplying electric energy generated during coasting and recuperation to the vehicles’ 9.6 Ah lithium-ion battery.

From there, the battery provides the electric motor energy to accelerate turbine located downstream of the engine’s turbochargers to quickly increase pressure, aiding engine responsiveness and torque delivery.

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The entire EPC system adds just 10kg to the vehicles’ overall weight.

Both the Audi S6 and S7 are rated at a massive 444hp and 600Nm of torque.

More importantly than numbers, however, is drivability, control and agile responsiveness, where the 2.9-liter V6 TFSI with EPC excels.

In internal tests that simulate real-world standing starts, the latest powertrain exhibits response characteristics that rival Audi’s torque-rich, turbocharged 4.0-liter TFSI V8.

Yet, the 2020 S6 and S7 offer 22% greater fuel-efficiency with its downsized V6 engine compared to their predecessors without sacrificing performance.

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