Mercedes' new electric exhaust gas turbocharger on final stages of development

The future of AMG provides for converting their compact into electric and achieving greater efficiency through more driving dynamics.
The developers in Affalterbach work with maximum production on innovative technologies in order to optimally implement the combination and achieve improved performance.
"We have clearly defined our goals for an electrified future. To achieve them, we rely on discrete and highly innovative components and assemblies," said Tobias Moers, CEO of Mercedes-AMG GmbH.
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While Mercedes-AMG is carrying out the electrification with the latest developments, this will also benefit from motorsport know-how.
"With this step, we strategically supplement our modular technology and adapt it to our performance requirements. As a first step, this includes the electrified turbocharger - an example of the transfer of Formula 1 technology to the road, which will bring turbocharged internal combustion engines to an unprecedented level of agility, "he added.
The electric exhaust gas turbocharger, the company's latest achievement, is already in the final phase of its development. This will be used in the near future as a pioneer in a series model from Affalterbach.
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This technology, developed in collaboration with Garrett Motion, comes from Formula 1. It solves the contradicting goals between a small, fast-reacting turbocharger with low peak power and a large turbocharger with high peak power.
With a size of about 4 centimeters, this slim electric motor is a highlight of this new turbocharger system. This is mainly integrated on the supercharger shaft between the compressor wheel on the fresh air side and the turbine wheel on the exhaust side.
The electric motor drives the compressor wheel before it starts the exhaust gas flow.
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The electrification of the turbocharger automatically improves the quick response from idling speed and over the entire engine speed range. The turbo deceleration - the delayed reaction of a conventional turbocharger - is removed from the electric motor.
As a result of this solution, the internal combustion engine reacts even more immediately to accelerator pedal input, which makes the entire drive more agile and powerful.
In addition, this technology enables higher torque at low engine speeds, which also optimizes the ability to accelerate and improves agility from a standing start. Even if the person behind the steering wheel takes their foot off the accelerator pedal or applies the brakes, the electric turbocharger can maintain the boost pressure all the time and thus achieve a guaranteed continuous direct response.
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The turbocharger reaches speeds of up to 170,000 rpm, which enables a very high air flow. It can be managed via a 48-volt electrical system. The turbocharger, the electric motor and the power electronics are connected to the cooling circuit of the internal combustion engine in order to ensure an optimal temperature environment.
Photos from Mercedes-Benz
Also read:
A brief overview of Mercedes-AMG
This is the 2020 Mercedes-AMG GT

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