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      04-14-2008, 07:03 AM   #1
mapezzul
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F01 7-series to get 8 speed automatic transmission.



Quote:
In order to keep up with the Jones’ BMW has had to think a bit outside the box. Our sources indicate that the transmission BMW will utilize takes up the same amount of space as the current 6 speeds and will not use additional components. This has been made possible by a completely new transmission concept. We have learned that it utilizes four planetary gear sets and five transmission clutches. Two transmission clutches are unlocked per gear, thus resulting in greater efficiency and a higher overall transmission ratio.

It is touted as being smoother and will reduce fuel consumption by almost six percent; way to go Efficient Dynamics! Since it is the same size as the current 6 speeds, a larger hump or other invasions into the passenger cabin space is not necessary. The gear selector will also return to the console from its previous stalk location; a well welcomed change for many.- Bimmerfile (the original source)
There has been some new info obtained about the particulars of this transmission. Specifically it uses an new approach to autos in order to obtain higher efficiency in a package the same size as current 6 speeds. It will be used in all application, hybrid and x-drive further indicating the 7 will see these variants.

BMW explored other options but the 8 speed was the most efficient.

http://www.bimmerfile.com/2008/04/14...eed-automatic/
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Last edited by mapezzul; 04-14-2008 at 04:45 PM..
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