Mercedes-AMG, Mercedes-Benz’s efficiency arm, is becoming a member of other German automakers and embracing electrical turbocharging expertise. E-turbos, as they’re generally known as, do the identical work as regular turbochargers—so, appearing as a compressor and forcing a larger density of air into the combustion chamber—however as a substitute of being pushed solely by an engine’s exhaust gases, they’re aided in spinning up by an electrical motor.
The important thing benefit of e-turbos is enhance that comes on proper now, reasonably than purely exhaust-driven turbos which require time to spool up and supply enhance—the dreaded turbo lag. Utilizing a slim, 1.6-inch-thick electrical motor built-in with the turbocharger’s compressor-wheel shaft, AMG’s e-turbo design (developed at the side of Garrett) allows the turbo to be spun up earlier than exhaust gases are flowing, massively bettering low-speed engine response and energy.
E-turbos allow finer management over enhance strain typically, too, for the reason that turbocharger’s operation is partially unbiased from exhaust strain, at the very least at low speeds. Mercedes-AMG says that its new e-turbo will even maintain the compressor wheel spinning when the motive force lifts their foot off the throttle—in order to stop enhance strain from bleeding off and ship rapid engine response when the motive force will get again into the fuel. This technique, by the best way, is powered by a 48-volt electrical system like that in a rash of recent luxurious merchandise and mild-hybrid automobiles.
Mercedes isn’t saying what product will get the brand new e-turbo first, or when—however it has revealed which engine will get the tech: The M139 four-cylinder, which is presently utilized in the new compact Mercedes-AMG CLA45 and the upcoming GLA45. That stated, each of these automobiles had been launched with 382-hp variations of the M139 late final 12 months (with a 416-hp version promised for warmer “S” fashions). So, except AMG is hiding the e-turbo element from the present M139’s spec sheet, and it’s accountable for the 416-hp iteration, the tech is probably going headed for later variations of the 45-badged compact AMGs. Certainly, AMG says the e-turbo is headed for its “subsequent automobile era.” We doubtless should await these compact AMGs’ mid-cycle refreshes or redesigns in a few years, then, to see e-turbo and 48-volt techniques enter manufacturing.
Certainly, after all, e-turbo tech would later unfold to AMG’s six- and eight-cylinder fashions, too, particularly given how the rising 43- and 53-badged six-cylinder AMG merchandise have 48-volt electrical techniques and mild-hybrid tech onboard. Both approach, Audi’s work on e-turbos quickly can be challenged within the luxury-tech cage battle by Mercedes, and by no means earlier than have we regarded so ahead to a bunch of blown scorching air.
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