Affalterbach. The future of Mercedes-AMG is turning electric and as part of this combines high efficiency with additional driving dynamics. To implement this combination to optimum effect, the developers in Affalterbach are working intensively on innovative technologies which will take performance to a new level. The next vehicle generation will see the deployment of the electric exhaust gas turbocharger.
Mercedes-AMG is pressing ahead with electrification through innovative developments and as part of this is also benefiting from motorsport know-how. The latest achievement which is already in the final stages of development is the electric exhaust gas turbocharger, which in future will be used for the first time in a series production model from Affalterbach. Developed in partnership with Garrett Motion, this technology comes straight from Formula 1 and resolves the conflicting goals between a small, fast-reacting turbocharger which achieves relatively low peak performance and a large turbocharger with a high peak performance but which on the other hand can suffer from turbo lag.
Exhaust gas turbocharger with integrated electric motor: agility redefined
The highlight of this innovative turbocharging system is a slim electric motor, measuring about 4 centimetres, which is integrated directly on the charger shaft between the turbine wheel on the exhaust side and the compressor wheel on the fresh air side. This electronically controlled electric motor drives the compressor wheel before this accepts the exhaust gas flow. The electrification of the turbocharger significantly improves immediate response from idle speed and across the entire engine speed range. The so-called turbo lag – the delayed response of a conventional turbocharger – is eliminated by the electric motor. The result is that the combustion engine responds even more spontaneously to accelerator pedal input, and the entire driving feel is significantly more dynamic and agile. In addition, electrification of the turbocharger enables higher torque at low engine speeds, which also enhances agility and optimises 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.
The turbocharger achieves speeds of up to 170,000 rpm, which enables a very high rate of air flow. It can be operated via a 48-volt on-board electrical system. The turbocharger, electric motor and power electronics are connected to the combustion engine's cooling circuit to create an optimum temperature environment at all times.
"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. 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", explains Tobias Moers, Chairman of the Board of Management of Mercedes-AMG GmbH.
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Mercedes-Benz AG at a glance
Mercedes-Benz AG is responsible for the global business of Mercedes-Benz Cars and Mercedes-Benz Vans, with 173,000 employees worldwide. Ola Källenius is Chairman of the Board of Management of Mercedes-Benz AG. The company focuses on the development, production and sales of passenger cars, vans and services. Furthermore, with its pioneering innovations, the company aspires to be a leader in the fields of connectivity, automated driving and alternative powertrains. The product portfolio comprises the Mercedes-Benz brand with the sub-brands Mercedes-AMG, Mercedes-Maybach and Mercedes me, as well as the smart brand and the EQ product and technology brand for electric mobility. Mercedes-Benz AG is one of the largest manufacturers of premium passenger cars. In 2019, it sold nearly 2.4 million passenger cars and more than 438,000 vans. In its two business segments, Mercedes-Benz AG is continually expanding its worldwide production network with over 40 production sites on four continents, while gearing itself to meet the requirements of electric mobility. At the same time, the company is constructing its global battery production network on three continents. Sustainable actions play a decisive role in both business segments. To the company, sustainability means creating lasting value for all stakeholders: customers, employees, investors, business partners and society as a whole. The basis for this is Daimler's sustainable business strategy. In it, the company takes responsibility for the economic, ecological and social effects of its business activities and looks at the entire value chain.
Mercedes-Benz AG, 70546 Stuttgart, Germany
Tel. +49 711 17 - 0, Fax +49 711 17 - 22244, firstname.lastname@example.org, www.mercedes-benz.com
Registered Office and Court of Registry: Stuttgart; HRB No. HRB762873
Chairman of the Supervisory Board: Manfred Bischoff
Board of Management: Ola Källenius (Chairman), Jörg Burzer, Renata Jungo Brüngger, Sajjad Khan, Sabine Kohleisen,
Frank Lindenberg, Markus Schäfer, Britta Seeger
* Further information on the official fuel consumption and the official specific CO₂ emissions of new passenger cars can be found in the "Leitfaden über den Kraftstoffverbrauch, die CO₂-Emissionen und den Stromverbrauch neuer Personenkraftwagen" [Guide to fuel consumption, CO₂ emissions and power consumption of new passenger cars], which is available free of charge at all sales outlets and from Deutsche Automobil Treuhand GmbH at www.dat.de