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    Electric Turbochargers in Production Cars from Mercedes

    https://www.roadandtrack.com/new-cars/car-technology/a32883694/mercedes-amg-electric-turbocharger/

    Mercedes-AMG Is Putting an Electric Turbocharger Into Production

    AMG is bringing Formula 1 technology to the road. This is potentially a game-changer.

    For a few years now, Formula 1 engines have used electric turbochargers, with an electric motor attached to the shaft that connects the compressor and turbine wheels. The effect is virtually no turbo lag, as the electric motor spins up the compressor and turbine far quicker than exhaust gasses alone. Neat stuff, and thanks to Mercedes-AMG, it's coming to production road cars.

    AMG announced today that it'll use an electric turbocharger developed with Garrett in a future production model. A Mercedes spokesperson told Road & Track that this turbo will be used on a variant of AMG's 2.0-liter M139 (pictured throughout) currently used in the new 45-series cars. Mercedes isn't yet announcing what model this turbo will debut with, but it's worth noting that last year, reports emerged saying AMG might abandon the V-8 for the next C63, and instead adopt some sort of four-cylinder. This electric-turbocharged M139 certainly sounds like it could be it.

    This new electric turbocharger is fascinating. The idea is to blend the quick response of a smaller turbo with the power-generating-capability of a big one. As with an F1 MGU-H, the electric motor is mounted directly to the shaft that connects the turbine and compressor wheels. The motor is driven off a 48-volt electrical system and starts spinning up the compressor wheel before exhaust gasses spin up the turbine.

    Mercedes-AMG makes bold claims about the results. "Turbo lag—the delayed response of a conventional turbocharger—is eliminated by the electric motor," the brand said in a press release. The electric motor, which is 1.6 inches wide, keeps the compressor wheel spinning even when the driver comes off throttle, so there's no waiting when getting back to power. Mercedes says the electric motor also helps improve low end torque, and eventually, it might be able to harvest energy on its own, just like an MGU-H.

    The M139 offers a maximum of 414 hp and 369 lb-ft of torque, and it's unclear how these numbers will change with the addition of the new electric turbocharger. Mercedes told Road & Track that "the use of the electrified turbocharger is not aimed at achieving the highest possible peak power; this technology rather increases the efficiency, the response behavior and the usable speed range of charged engines."

    It's also worth noting that this is different than the electric auxiliary compressor AMG uses in the 53-series cars. That unit is a separate compressor driven by an electric motor, which feeds air into the engine directly or the turbocharger. It achieves similar goals—reducing turbo lag and improving low-end torque—but it's a separate device from the turbocharger.

    Mercedes will employ a similar electric turbocharger in its ONE hypercar, which borrows the engine from its 2017 F1 car. But this is arguably more important. Modern F1 tech is coming to mainstream production cars.


    Re: Electric Turbochargers in Production Cars from Mercedes

    I think similar tech will be used for the 992.2 Carrera models and I pray Porsche uses something more sophisticated for the 992.2 Turbo S. 


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    RC (Germany) - Rennteam Editor Lamborghini Huracan Performante (2019), Mercedes GLC63 S AMG (2020), Mercedes C63 S AMG Cab (2019), Range Rover Evoque Si4 Black Edition (2019)


    Re: Electric Turbochargers in Production Cars from Mercedes

    With 48V system becoming more and more widespread, this is finally a reality.

    The old standard 12V simply can't provide enough power to have such a thing. Higher voltage have it's advantages.

    Think Audi was first using electric turbo in the SQ7, so Mercedes will be the second car maker to do it.

    Not sure about the name though. Turbos are supposed to be powered by exhaust gas, think electric supercharger might be more appropriate, as supercharger is driven by the engine itself. 


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    Re: Electric Turbochargers in Production Cars from Mercedes

    Whoopsy:

    With 48V system becoming more and more widespread, this is finally a reality.

    The old standard 12V simply can't provide enough power to have such a thing. Higher voltage have it's advantages.

    Think Audi was first using electric turbo in the SQ7, so Mercedes will be the second car maker to do it.

    Not sure about the name though . Turbos are supposed to be powered by exhaust gas, think electric supercharger might be more appropriate, as supercharger is driven by the engine itself. 

    It is still a turbocharger as there is still a turbine driven by exhaust gasses, but the compressor is spun up initially by an electric motor to overcome the lag between opening the throttle and exhaust gasses being generated and reacting on the turbine wheel. 


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    Porsche Boxster 981 GTS Carrara white / VW Golf GTI 5dr DSG Tornado Red

     


    Re: Electric Turbochargers in Production Cars from Mercedes

    dreamcar:
    Whoopsy:

    With 48V system becoming more and more widespread, this is finally a reality.

    The old standard 12V simply can't provide enough power to have such a thing. Higher voltage have it's advantages.

    Think Audi was first using electric turbo in the SQ7, so Mercedes will be the second car maker to do it.

    Not sure about the name though . Turbos are supposed to be powered by exhaust gas, think electric supercharger might be more appropriate, as supercharger is driven by the engine itself. 

    It is still a turbocharger as there is still a turbine driven by exhaust gasses, but the compressor is spun up initially by an electric motor to overcome the lag between opening the throttle and exhaust gasses being generated and reacting on the turbine wheel. 


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    Porsche Boxster 981 GTS Carrara white / VW Golf GTI 5dr DSG Tornado Red

     

     

    I stand corrected then. I was picturing an electric compressor doing all the work without the help of exhaust gas.

     


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    Re: Electric Turbochargers in Production Cars from Mercedes

    Bentley use a 48V battery in the Bentayga to power its adjustable sway bars......


    Re: Electric Turbochargers in Production Cars from Mercedes

    VAG is leading the way to upgrade modern cars' electric system to 48V from 12V.

    4 times of the voltage means they can push a lot more power to auxiliaries to power them. 

     


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    Re: Electric Turbochargers in Production Cars from Mercedes

    These 48v parts look like a probable financial nightmare for the second owner.


    Re: Electric Turbochargers in Production Cars from Mercedes

    JimFlat6:

    These 48v parts look like a probable financial nightmare for the second owner.

    Or like refitting the cushions on the deck chairs of the Titanic?  I guess every dying tech gets a final attempt. 
    (just joking, forgot the sarcasm thing)


    Re: Electric Turbochargers in Production Cars from Mercedes

    JimFlat6:

    These 48v parts look like a probable financial nightmare for the second owner.

     

    Maybe, maybe not. It's just electrical stuff anyways.

    Automobiles started off with 6V parts.

    When that wasn't enough, they moved onto 12V stuff which lasted to this day. Same was said of the 12V parts being a financial nightmare way back then.

    12V has a power limit, you can only push so much current through a wire, hence the invention of 48V to raise the power limit. 

     


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    Re: Electric Turbochargers in Production Cars from Mercedes

    Whoopsy:
    JimFlat6:

    These 48v parts look like a probable financial nightmare for the second owner.

     

    Maybe, maybe not. It's just electrical stuff anyways.

    Automobiles started off with 6V parts.

    When that wasn't enough, they moved onto 12V stuff which lasted to this day. Same was said of the 12V parts being a financial nightmare way back then.

    12V has a power limit, you can only push so much current through a wire, hence the invention of 48V to raise the power limit. 

     

    Implementation. Invention would be something different. 
    Now, with 48 volts they are literally EVs. No need to have electric cars now. 🥳 


    Re: Electric Turbochargers in Production Cars from Mercedes

    I'm afraid most of these regulations-chasing tweaks are not going to age well.  Once they get out of warranty, better budget for more expensive repairs vs. simpler, earlier generations.


    Re: Electric Turbochargers in Production Cars from Mercedes

    Jim_in_Iowa:

    I'm afraid most of these regulations-chasing tweaks are not going to age well.  Once they get out of warranty, better budget for more expensive repairs vs. simpler, earlier generations.

    Nothing new. Cars with a more complex technology were always more difficult to maintain.

    And it is not driven by our bad government nor fake media, it’s driven by the customers. If you compare a 12V generation car with the same model with 48V technology you won’t go back (at least if it is your daily driver). Whoopsy is right, some features are only possible because of 48V. Maybe you should talk with some engineers working in car development.


     
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