Spied: 2013 BMW M3
#11
08-11-2011 | 04:41 PM
TS BMW Forums
Joined: Sep 2008
Posts: 3,144
From: Rochester Hills, MI
BMW has hinted that lower fuel consumption and weight will be a focus for the M3. Engineers in Munich may have some tricks up their sleeve. I've learned by talking to BMW folks that they test many different engine/transmission/brake options before signing off on the final build specs. It's still too early to make a call and there are several rumors floating around.
What the hell do I know, I'm not an engineer! However, this is what I could draw up.
A tri turbo could consist of the following:
1) Twin-turbos (conventional exhaust fed, but free-flowing that can handle high boost pressure.
2) 1 hybrid turbocharger (high speed electrical motor in the rotating assembly of a turbocharger). When the driver presses the accelerator, the e-turbo would essentially act as a mini supercharger for low boost low-rpm ranges (idle stop-and-go driving) and the conventional twin-turbos would take over for mid-high rpm ranges. Result high revving high horsepower engine, lower fuel consumption, and zero turbo lag.
Issues...how to have the ecu control voltage, and boost levels, getting the electric compressor (can spin up to about 120,000 rpm) to spin as fast as the turbo (around 200,000 rpm), engine/turbo packaging and plumbing, long-term reliability, and cost.
E-turbos or E-boosting are under development >
BorgWarner eBooster: eBooster by BorgWarner Turbo & Emissions Systems
Honeywell-Garrett electrically-assisted turbo
What the hell do I know, I'm not an engineer! However, this is what I could draw up.
A tri turbo could consist of the following:
1) Twin-turbos (conventional exhaust fed, but free-flowing that can handle high boost pressure.
2) 1 hybrid turbocharger (high speed electrical motor in the rotating assembly of a turbocharger). When the driver presses the accelerator, the e-turbo would essentially act as a mini supercharger for low boost low-rpm ranges (idle stop-and-go driving) and the conventional twin-turbos would take over for mid-high rpm ranges. Result high revving high horsepower engine, lower fuel consumption, and zero turbo lag.
Issues...how to have the ecu control voltage, and boost levels, getting the electric compressor (can spin up to about 120,000 rpm) to spin as fast as the turbo (around 200,000 rpm), engine/turbo packaging and plumbing, long-term reliability, and cost.
E-turbos or E-boosting are under development >
BorgWarner eBooster: eBooster by BorgWarner Turbo & Emissions Systems
Honeywell-Garrett electrically-assisted turbo
#13
08-11-2011 | 04:50 PM
Teamspeed Pro
Joined: Feb 2009
Posts: 7,647
From: Munich,Germany
#14
08-11-2011 | 04:57 PM
TS BMW Forums
Joined: Sep 2008
Posts: 3,144
From: Rochester Hills, MI
I take what BMW insider Scott26 says with a grain of salt, but he just posted this on M3post.
So no F30 M3 Sedan - this is just a test mule. Damn it, I really wanted a M3 Sedan as my next BMW.
For Production the first car to demonstrate this engine will be the X3 M.
Power output will be around the 450BHP mark. As this gives M to play around with further M3 models in the future of the F32 Platform.
Any M3 will continue with the same philosophy. It is not about Power and outright speed. It is about advancing the game in technology , lightness and remaining the best driving car in it's segment. It will continue to do what the E92 has done since 2007. Take on allcomers including new more powerful models such as the C63 AMG Coupe and Audi RS5 and still outdrive them.
1. Yes the sedan/touring remains the 3er
2. Yes the Coupe/Cabrio in light of moving upmarket will be renamed 4er.
3. BMW M. Is a sub-brand of BMW as is BMWi. BMWi has stand alone products that do not crossover with a BMW. i3 for example has nothing to do with a 3er. If you take M for example. M takes the car away from it's BMW routes and completely transforms the way it drives and handles that it becomes an individual product. That is the idea for M and M3 and further signifies that M is a sub-brand within BMW with it's own products.
4. This car is using the Coupe chassis because Coupe's are not ready for public testing.
1. the sedan will be a 3 series
2. the coupe will be a 4 series
3. the coupe will be a m3 even though it's a 4 series
4. there is no sedan m3...but magically there it is
Power output will be around the 450BHP mark. As this gives M to play around with further M3 models in the future of the F32 Platform.
Any M3 will continue with the same philosophy. It is not about Power and outright speed. It is about advancing the game in technology , lightness and remaining the best driving car in it's segment. It will continue to do what the E92 has done since 2007. Take on allcomers including new more powerful models such as the C63 AMG Coupe and Audi RS5 and still outdrive them.
1. Yes the sedan/touring remains the 3er
2. Yes the Coupe/Cabrio in light of moving upmarket will be renamed 4er.
3. BMW M. Is a sub-brand of BMW as is BMWi. BMWi has stand alone products that do not crossover with a BMW. i3 for example has nothing to do with a 3er. If you take M for example. M takes the car away from it's BMW routes and completely transforms the way it drives and handles that it becomes an individual product. That is the idea for M and M3 and further signifies that M is a sub-brand within BMW with it's own products.
4. This car is using the Coupe chassis because Coupe's are not ready for public testing.
1. the sedan will be a 3 series
2. the coupe will be a 4 series
3. the coupe will be a m3 even though it's a 4 series
4. there is no sedan m3...but magically there it is
