Next-Gen Mercedes-AMG Models Getting Electric Turbo Tech

The next generation of Mercedes-AMG performance models will see the deployment of an electric exhaust gas turbocharger, inspired by technology originally developed for the carmaker’s Formula 1 team.

The technology was developed in partnership with Garrett Motion and is said to resolve the conflicting goals between a small, fast-reacting turbocharger with relatively low peak performance, and a large turbo with a high output.

There’s a slim electric motor integrated directly on the charger shaft between the turbine wheel on the exhaust side, and the compressor wheel on the fresh air side. It measures about 4 cm (1.57 inches) and Mercedes-AMG calls it the highlight of this system.

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“We have clearly defined our goals for an electrified future. In order to reach them, we are relying on discrete and highly innovative components as well as assemblies,” said Mercedes-AMG chairman Tobias Moers.

“With this move we are strategically supplementing our modular technology and tailoring it to our performance requirements. In a first step this includes the electrified turbocharger – an example of the transfer of Formula 1 technology to the road, something with which we will take turbocharged combustion engines to a previously unattainable level of agility,” he added.

The previously-mentioned electric motor then drives the compressor wheel before this accepts the exhaust gas flow, thus improving immediate response from idle speed and across the entire engine speed range, claims the carmaker. In other words, it eliminates turbo lag.

Electrification of the turbocharger also results in higher torque at low engine speeds, optimizing acceleration capability from a standstill.

“Even when the driver takes their foot off the accelerator or applies the brakes, the technology of the electric turbocharger is able to maintain the boost pressure at all times, so that a continuous direct response is guaranteed.”