Mercedes-AMG to launch new eTurbo tech on next-generation performance models

The first electrified AMGs are on their way, starting with this electric-motor turbocharger ready for use in its new models

Mercedes-AMG has announced details of a new form of high-performance engine tech ready to be integrated into its next-generation models. Called an eTurbo, AMG has collaborated with famed turbine manufacturer Garrett in the development of this new electrified turbo, which aims to take advantage of the enhanced electrification of Mercedes-Benz’s new models not just for better economy, but performance gains too.

The system works fairly simply by the turbo itself being fitted with a small, high-powered electric motor that itself spins the turbine within the turbo housing instantly when throttle is applied, essentially eradicating turbo lag right at its source. The electric motor requires the extra grunt of a 48V secondary electrical system, as many integrated starter motor and generators require in most mild-hybrid powertrain set-ups, but with a majority of the Mercedes range converting to this type of electrical architecture, the applications for this new eTurbo are widespread.

Other manufacturers such as Audi utilise similar types of turbo lag mitigation systems, but these usually integrate the use of an electrically driven supercharger to force compressed air into the cylinders before the turbos have a chance to spin. This creates extra complexity within the induction system, and the corresponding boost at low-rpm is still lower than the output of the conventional turbos that quickly take over the job once the exhaust gases have started spinning the turbos. AMG’s system essentially cuts out the middle man, directly spinning the rotor wheel from the small electric motor.

The system will be most effective on large-scale turbochargers, as big turbos are more susceptible to lag thanks to the large-diameter turbines that need more air from the exhaust to get them going. As well as improving response, it should also further flatten the engine’s torque curve at very low revs.

Mercedes-AMG has remained coy about the prospective models we could expect to see this technology in, but in theory it could negate the need for more complex and highly strung solutions that the industry at large has employed over the last 20 years, such as sequential turbocharging or even the very in vogue hot-V turbocharging layout.

Recommended

Mercedes-AMG Project One spied on the 'Ring
Mercedes-AMG Project One – quarter
Mercedes

Mercedes-AMG Project One spied on the 'Ring

AMG’s F1-derived hypercar is nearly ready to rival the Valkyrie and T.50
16 Apr 2021
Mercedes-Benz EQS revealed – Merc shows its electrified hand
Mercedes-Benz EQS – front quarter static
Mercedes

Mercedes-Benz EQS revealed – Merc shows its electrified hand

The big, bold, brash new face of Mercedes’ EV strategy is here, in the form of the EQS
15 Apr 2021
800bhp Mercedes-AMG GT73 4-Door plug-in powertrain details confirmed
Mercedes-AMG GT73
Mercedes

800bhp Mercedes-AMG GT73 4-Door plug-in powertrain details confirmed

The four-door coupe is set to receive the hybrid treatment, going up against the 680bhp Porsche Panamera Turbo S E-Hybrid
31 Mar 2021
Mercedes-AMG E Performance plug-in powertrains revealed – it’s official, next C63 to go four-cylinder 
Mercedes-AMG E Performance plug-in powertrains
Mercedes

Mercedes-AMG E Performance plug-in powertrains revealed – it’s official, next C63 to go four-cylinder 

AMG’s electrified powertrains revealed – new V8 and four-cylinder plug-in powertrains to spread across the range
31 Mar 2021

Most Popular

Alfa Romeo Giulia GTAm 2021 review – if Porsche built a four-door 911 GT3 RS
Alfa Giulia GTAm header
Alfa Romeo Giulia

Alfa Romeo Giulia GTAm 2021 review – if Porsche built a four-door 911 GT3 RS

Alfa Romeo Giulia GTAm is the most extreme modern Alfa to date. It’s also one of its very best.
12 May 2021
Sub-T.50 Gordon Murray Automotive Project Two supercar confirmed
GMA T.50 XP2
Supercars

Sub-T.50 Gordon Murray Automotive Project Two supercar confirmed

Two-seater retains Cosworth V12 and manual gearbox, but loses ground-effect fan
10 May 2021
Audi RS6 v Porsche Panamera Sport Turismo v Mercedes-AMG E63 S Estate – super-estates go head-to-head
Audi RS6 v Porsche Panamera v Mercedes-AMG
Features

Audi RS6 v Porsche Panamera Sport Turismo v Mercedes-AMG E63 S Estate – super-estates go head-to-head

Which 600bhp wagon is the current super-estate king? It‘s time to find out as the Audi RS6 Avant takes on Porsche Panamera Turbo S E-Hybrid Sport Turi…
8 May 2021