BMW's 'split engine' hybrid plan - BMW 3-Series (E90 E92) Forum

Mark · 01-08-2010, 11:02 PM

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According to Autocar magazine, BMW has filed a patent for a hybrid car that actually uses a split engine for its powertrain.

What is this exactly?

Ok, a 'traditional' hybrid car basicly has a gasoline engine mated to an electric motor. The electric motor will either add extra power to the gasoline engine, or actually sometimes take over from the gasoline engine and run the car on its own.

But in BMW's 'split hybrid' setup there would be a traditional gasoline-electric combination and a third regular gasoline engine. The third engine would sit dormant unless even more power was needed and then it turns on and gives more juice.

The actual displacements and cylinder sizes haven't been revealed, but one would assume each engine would be low displacement with only 2 or 3 cylinders.

Source: http://www.autocar.co.uk/News/NewsAr...ncepts/246323/

m_thompson · 01-09-2010, 09:08 AM

Sounds like the Cadillac 4-6-8 engine...

numba1guju · 01-09-2010, 12:12 PM

so the hp range would be in the hundreds? do you think the engines will be on the low end bmws, in this case the x28's?? because without the power BMW isn't BMW lol

cotmfk · 01-09-2010, 12:32 PM

Sounds like what GM is already doing.

335iTrace · 01-09-2010, 02:30 PM

this sad'ens me...

cosmos515 · 01-09-2010, 05:13 PM

No, it does not lay dormant and then is used for more power to drive the car. It is used strictly to power the batteries for pure electric mode. This is a reserve diesel power plant that is like a fuel cell for the electric.

Kiemyster · 01-09-2010, 06:30 PM

Quote:

Originally Posted by numba1guju

so the hp range would be in the hundreds? do you think the engines will be on the low end bmws, in this case the x28's?? because without the power BMW isn't BMW lol

My E90 makes it to 60 in 8+ seconds..... doesnt make it less of a bmw than yours!

footie · 01-09-2010, 06:37 PM

What might sound strange now, in a few years will be common place and openly accepted. The fear of the enthusiast is that the performance they so desire will crease under such changes, but fact is that with every change in engine design the performance driver has always been catered for so I wouldn't worry too much.

numba1guju · 01-09-2010, 06:54 PM

Quote:

Originally Posted by Kiemyster

My E90 makes it to 60 in 8+ seconds..... doesnt make it less of a bmw than yours!

hahaha thats not what i meant, i just meant bmw is a beast...it cant stoop down to the 100s

MikeTerp · 01-12-2010, 08:15 PM

Quote:

Originally Posted by 335iTrace

this sad'ens me...

me too. Sounds complicated as hell and expensive to fix.

Kroon78 · 01-12-2010, 10:28 PM

And I thought what we drive now was killing off the DIY mechanic. These will do it and have change leftover.

01-08-2010, 11:02 PM	#1
Mark Administrator Drives: 1M Join Date: Mar 2005 Location: NY / Philly / Boston Posts: 3,864 iTrader: (1) Garage List 2011 BMW 1 Series M ... [4.04]	BMW's 'split engine' hybrid plan According to Autocar magazine, BMW has filed a patent for a hybrid car that actually uses a split engine for its powertrain. What is this exactly? Ok, a 'traditional' hybrid car basicly has a gasoline engine mated to an electric motor. The electric motor will either add extra power to the gasoline engine, or actually sometimes take over from the gasoline engine and run the car on its own. But in BMW's 'split hybrid' setup there would be a traditional gasoline-electric combination and a third regular gasoline engine. The third engine would sit dormant unless even more power was needed and then it turns on and gives more juice. The actual displacements and cylinder sizes haven't been revealed, but one would assume each engine would be low displacement with only 2 or 3 cylinders. Source: http://www.autocar.co.uk/News/NewsAr...ncepts/246323/ __________________ The new beast. BMW M5.
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01-09-2010, 09:08 AM	#2
m_thompson Major Drives: M-Sport 128i, 328xi, 3.0CS Join Date: Jun 2008 Location: New England, USA Posts: 1,014 iTrader: (0) Garage List 2009 128i [0.00] 1972 3.0CS [5.00]	Sounds like the Cadillac 4-6-8 engine... __________________ '09 128i - Black Sapphire Metallic\Coral Red\Glacier Silver\N51 DISA\6MT\Navigation\Premium\M-Sport\Heated seats\Xenon Headlights\iPod\Smartphone\Euro Delivery

01-09-2010, 12:12 PM	#3
numba1guju Lieutenant Drives: 2002 325i Join Date: Dec 2008 Location: Houston, TX Posts: 471 iTrader: (0)	so the hp range would be in the hundreds? do you think the engines will be on the low end bmws, in this case the x28's?? because without the power BMW isn't BMW lol __________________ Current: 2013 328i Mineral Gray ZMM/ZLP/Heated Seats SOLD: 2002 325i Jet Black ZPP

01-09-2010, 12:32 PM	#4
cotmfk Brigadier General Drives: 2007 335i Join Date: Mar 2009 Location: DC, MD, VA Posts: 3,166 iTrader: (11)	Sounds like what GM is already doing. __________________

01-09-2010, 05:13 PM	#6
cosmos515 Second Lieutenant Drives: I find what I keeps Join Date: Feb 2008 Location: So Cal Posts: 215 iTrader: (0)	No, it does not lay dormant and then is used for more power to drive the car. It is used strictly to power the batteries for pure electric mode. This is a reserve diesel power plant that is like a fuel cell for the electric. __________________ "Motion does not equal progress" "I love the smell of cosmoline in the morning"

01-09-2010, 02:30 PM	#5
335iTrace First Lieutenant Drives: 2011 Audi S5 V8 Join Date: Jul 2009 Location: Charlotte NC Posts: 369 iTrader: (0)	this sad'ens me...

01-09-2010, 06:37 PM	#8
footie Major General Drives: ???????????? Join Date: Oct 2007 Location: BMW M3 will get a V6TT Posts: 7,508 iTrader: (0) Garage List 2008 E92 M3 [0.00]	What might sound strange now, in a few years will be common place and openly accepted. The fear of the enthusiast is that the performance they so desire will crease under such changes, but fact is that with every change in engine design the performance driver has always been catered for so I wouldn't worry too much.

01-12-2010, 10:28 PM	#11
Kroon78 New Member Drives: 2007 335i Join Date: Jan 2010 Location: Delaware Posts: 17 iTrader: (0)	And I thought what we drive now was killing off the DIY mechanic. These will do it and have change leftover.

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