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      08-25-2020, 07:40 PM   #71
stein_325i
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Quote:
Originally Posted by lemetier View Post
Borgwarner eTurbo.
I Wonder if it will be similar to the system in my CLS which uses an electric supercharger that runs off the 48-volt mild-hybrid system. Its awesome technology, gives the engine incredibly smooth output (almost NA-like), and provides plenty of power before the turbo is finished spooling, and even makes start stop so seamless I never have to turn it off. I love this tech in my CLS and would love to see BMW adopt it.

This instagram post by Jason Cammisa better explains the awesome technology
Quote:
The 3.0-liter M256 straight-six ⁣⁣⁣⁣makes 429 hp and 384 lb-ft. But forget everything you know about turbo engines: it responds, sounds, and pulls like a big NA V12. ⁣⁣⁣⁣Bonus: same MPG as the 4-cylinder E300 4Matic!
⁣Its trick? It a @borgwarnerincperformance electric supercharger called an eBooster.⁣⁣⁣⁣
⁣⁣⁣It spins from idle to 70,000 rpm in only 0.25 seconds and generates almost 7 psi of boost.⁣⁣⁣
⁣⁣Powered by 48V battery and takes 5000 watts (7 hp!) to spool up... but that boost gives you ~10x that power out the engine. That means you don't need to have a huge, heavy 70-hp electric motor to fill in. ⁣⁣⁣
⁣⁣⁣⁣(The McLaren P1 used a 177-hp #torquefill motor. Acura NSX used 3: 36, 36, and 47 hp! That is HEAVY.)⁣
⁣⁣⁣⁣⁣The M256 also has a small electric motor — 21-hp, 184 lb-ft — and it replaces the flywheel, starter, and alternator. It also provides torque-fill while the eBooster and turbo spool.⁣⁣⁣
⁣⁣⁣⁣Once the regular turbo spools up, the eBooster and motor fade out. ⁣With so many things to coordinate, this could have been a bucky, surgy disaster. Mercedes knocked it out of the park — this has the best boost control of any engine I've ever experienced. Coming on the throttle or off the throttle (which is just as difficult to manage), it responds like an na engine. And best of all, it's a #straightsix with all the smoothness and sound. ⁣⁣⁣

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Current Garage: 2022 Mercedes-Benz S 580 / 2023 Genesis GV70 2.5T / 2007 Mercedes-Benz E 350 / 1999 Mazda MX-5 Miata
Retired: '95 E36 325i 5MT / '04 E46 330i 6MT / '05 E83 X3 3.0i / '11 E90 335xi / '17 G30 540i / '19 F87 M2C 6MT / '19 MB CLS 53 / '20 MB GLC 300
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