Mercedes-AMG Electric Exhaust Gas Turbocharger Eliminates Turbo Lag
It’s no secret that AMG has promised to fully embrace electrification in the coming years as a follow-up to its very rare SLS AMG Electric Drive launched in 2013. The next series of “73” models will have all a plug-in hybrid powertrain with an output of around 800 horsepower, while the AMG One with its electrified powertrain derived from F1 will produce four-digit power. Boys and girls from Affalterbach seem to have another thing up their sleeves – an electric turbocharger.
The newly developed electric exhaust gas turbocharger promises to eliminate the dreaded turbo lag. Designed by AMG in collaboration with Garrett Motion, the new e-turbo is adapted from the exciting world of Formula 1 and combines the rapid response of a small turbocharger with the peak performance of a larger turbo.
How is the turbo lag eliminated? By installing a tiny electric motor in the turbocharger shaft, in particular between the turbine wheel on the exhaust side and the compressor wheel on the fresh air side. Measuring approximately 1.6 inches (4 centimeters), the electric motor powers the compressor wheel before it begins to accept the flow of exhaust gas.
Using this method, the delayed response of a conventional turbocharger is virtually eliminated, resulting in a more responsive engine immediately and across the entire rpm range. AMG says the turbo engine also helps the ICE to deliver more torque at low revs, so performance is dramatically improved compared to a traditional turbocharged engine. The optimal air flow is guaranteed by the turbocharger because it can reach impressive speeds of up to 170,000 rpm.
Mercedes-AMG doesn’t say which car will be the first to benefit from cutting-edge technology, but we do know that Garrett’s e-turbo will be installed in a road vehicle next year. Could it be the AMG GT 73? The Black Series? Time will tell, but we know it will debut in a “next generation of vehicles,” according to the press release.
AMG boss Tobias Moers, who will become CEO of Aston Martin on August 1, has already promised that the Black Series would have “something different” in terms of engine, adding “we have never done anything like that with an engine before – for AMG, it’s the first one. “It remains to be seen if he was referring to the e-turbo or something else.