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2019+ BMW 3 AND 4-SERIES FORUMS (G2x Generation) General G20 Sedan / G22 Coupe / G26 Gran Coupe Discussions Where's the new 48V electrical system?

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      10-06-2018, 06:46 PM   #1
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      10-06-2018, 07:28 PM   #2
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Quote:
Originally Posted by Schmee150 View Post
No mention of it on 330i press release but it was leaked in the upcoming model pipeline thread. Is it for the plug in hybrid version?
Yeah might've been vaporware. Something like that would've been a huge highlight in their press releases.
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      10-07-2018, 02:29 AM   #3
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Correct, no sign of it yet.
Very likely to be introduced with the 330e and perhaps it makes it way to other engines with the FL.
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      10-19-2018, 04:07 PM   #4
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G20 340i & 48 volt sysem

Does anyone now if the new 340I uses a 48 volt system and electric turbo to eliminate lag on the low end and a larger turbo to supply enough air on top. As we all know, the 335 torque plummets after 5500.
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      10-19-2018, 08:58 PM   #5
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Quote:
Originally Posted by RAV02 View Post
Does anyone now if the new 340I uses a 48 volt system and electric turbo to eliminate lag on the low end and a larger turbo to supply enough air on top. As we all know, the 335 torque plummets after 5500.
doubt it, BMW would have made it more obvious when unveiling the car or at least put it in the press release. I think this just turned out and stayed a rumor, but the M3 could have one possibly.
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      10-20-2018, 10:32 AM   #6
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I am not aware of BMW using 48-volt mild hybrid system in any of its current lineup, unlike Audi or MB; although BMW development chief had said that it would be coming in the future. It will most likely debut in cars such as the next M3/4.
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      10-21-2018, 10:40 PM   #7
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my guess Either 48v will be a late reveal for the M340 or it will come with the M3 and then spread down with LCI
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      11-03-2018, 09:06 AM   #8
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M340i uses the B58 engine
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      11-03-2018, 09:13 AM   #9
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I have no doubt BMW will start adding a 48V electrical system soon. Audi has implemented it on their A6,A7,and A8 and Q8. and Mercedes is following suit with the new upcoming S Class, GLS and GLE.
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      11-07-2018, 01:43 PM   #10
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Maybe they will come with the drivetrain refresh of the LCI. BMW seems to go with drivetrain updates mid lifecycle of a model.

Mild hybrids are completely different from something like the 330e. They will offer a torque boost at low revs directly to the crank via the 48V motor/alternator/starter.
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      11-08-2018, 02:25 AM   #11
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I'm somehow not able to find a source in english, but there are several german websites which quote Klaus Fröhlich on this topic. Basically he said nowadays (and that seems to include the G20) cars have a 48V bord net of the first generation, which does not give any advantages whatsoever, except for some extended coasting and start/stop. There will be a second generation, which will start to be fitted to the cars in 2020, which will bring all the advantages, like a 20kW start generator with additional 100Nm torque.

For those of you who want to use some google translate on it: https://www.bimmertoday.de/2018/08/2...ation-ab-2020/

I would guess that maybe a 4 series GC might feature that, a G20 will realistically have to wait until LCI.
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      11-08-2018, 06:19 AM   #12
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Quote:
Originally Posted by lyas View Post
For those of you who want to use some google translate on it: https://www.bimmertoday.de/2018/08/2...ation-ab-2020/

I would guess that maybe a 4 series GC might feature that, a G20 will realistically have to wait until LCI.
Here's a translation.

Quote:
So far, BMW has spoken conspicuously little about the 48-volt on-board network, which is already available on some of its competitors ' vehicles. In an interview with Auto Motor and Sport, Development Board member Klaus Fröhlich now reveals the background to the restraint so far: "The systems of the first generation deliver [...] Too little power and, from my point of view, too little can recuperate. For us, therefore, the second generation is much more interesting. "

BMW wants the 48-volt, second-generation on-board network to be nationwide and invariably housed in all models by 2025. Integration is beginning much earlier, after all, many modern assistance and infotainment functions rely on the more powerful on-board network. The Rolls-Royce Phantom already operates 48-volt first-generation on-board network, which was also mandatory in view of its longer life cycle. The same reason for the BMW 3 Series G20 leads to the integration of the 48-volt first generation on-board network, and later in the life cycle the technology is likely to undergo a major update. According to our information, BMW is planning the first production vehicles with a second-generation 48-volt on-board network for 2020.
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      11-14-2018, 07:02 AM   #13
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Sounds like BS, new Mercedes inline six-cylinder M256 engine is their first 48-volt electrical system available on 2017 S-class and it has an electric compressor on the top of conventional turbo. It also has Integrated Starter Generator (ISG) which provides an additional 22 hp and 180 pounds of torque. Audi uses similar system for their 2019 A6 and A7. BMW needs to catch up.

Quote:
Originally Posted by lyas View Post
I'm somehow not able to find a source in english, but there are several german websites which quote Klaus Fröhlich on this topic. Basically he said nowadays (and that seems to include the G20) cars have a 48V bord net of the first generation, which does not give any advantages whatsoever, except for some extended coasting and start/stop. There will be a second generation, which will start to be fitted to the cars in 2020, which will bring all the advantages, like a 20kW start generator with additional 100Nm torque.

For those of you who want to use some google translate on it: https://www.bimmertoday.de/2018/08/2...ation-ab-2020/

I would guess that maybe a 4 series GC might feature that, a G20 will realistically have to wait until LCI.

Last edited by Sedoy; 11-14-2018 at 07:14 AM..
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      11-15-2018, 02:24 PM   #14
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Quote:
Originally Posted by RAV02 View Post
Does anyone now if the new 340I uses a 48 volt system and electric turbo to eliminate lag on the low end and a larger turbo to supply enough air on top. As we all know, the 335 torque plummets after 5500.
No it doesn't but the B58 engine in the F30 340i and G20 M340i pulls much, much harder to redline than any stock N54 or N55 ever did. I've had all three engines and was very happy with the B58's power delivery even right up to redline.
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      11-27-2018, 09:36 AM   #15
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One of the good things about a 48v. system is that the LiOH battery can be used to keep the charge up on the 12V battery. The i3 propulsion battery does this to the 12v. battery. This is good news for those of us that have to keep a maintenance charger on the 12v battery because of infrequent usage, because we won't need to do that any more.
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