XBimmers X1   XBimmers X1
  XBimmers X1

Go Back   XBimmers | BMW X1 Forum > BMW X1 Forums > General BMW X1 (E84) Forum

Post Reply
 
Thread Tools Search this Thread
      11-22-2015, 11:15 PM   #111
jaeezzy
Enthusiast
jaeezzy's Avatar
27
Rep
305
Posts

Drives: BMW X1 sDrive18d M Sport
Join Date: Mar 2014
Location: Australia

iTrader: (0)

Yeah it should be due to electric steering assist rather than fwd.
__________________
...

jaeezzy...
Appreciate 0
      11-25-2015, 04:31 AM   #112
Dilbert2402
Second Lieutenant
Dilbert2402's Avatar
87
Rep
279
Posts

Drives: X3 G01 30e
Join Date: Apr 2012
Location: Hampshire, England

iTrader: (0)

Quote:
Originally Posted by vstolpner View Post
I thought light steering was due to the move to electric power steering?

And I'm pretty sure the AWD system always maintains power to all wheel in a 60/40 front to rear split?
I know the E84 maintains a 40/60 front to rear split unless it sees slippage.
This might help to explain the new xDrive setup:-

F48 Powertrain
4. xDrive
29
4.3.2. Operating strategy
The operating strategy ensures that the four-wheel drive is operated as required and in an energy efficient manner. The traction requirement is detected in a proactive manner and the drive torque redirected accordingly.
In most driving situations only the front wheels are driven. Only in certain situations is some of the drive torque also transmitted to the rear wheels. The distribution of the drive torque between the front and rear wheels is defined by the DSC. The following criteria are taken into account:
• Speed
• Lateral and longitudinal acceleration
• Brake control
• Steering angle
• Wheel speeds
• Vehicle longitudinal inclination
• Pedal sensor position
• Active driving program (SPORT, COMFORT, ECO PRO)
• DSC status (DSC activated/deactivated, DTC activated/deactivated)
Depending on the driving situation, some of the drive torque is transmitted to the rear wheels.
The exact ratio of the torque distribution is dependent on the activation of the multidisc clutch,
as well as the slip of the wheels. Some factors on the activation of the multidisc clutch are listed below.
The four-wheel drive is activated in the following situations, if there are no other criteria present which prevent this:
• Understeering vehicle
• Increased difference in speed between front and rear wheels
• Large vehicle longitudinal inclination (e.g. on inclines)
• Kick-down position
• Sporty driving style
• Respective environmental conditions, roadway conditions and type of terrain
The four-wheel drive is switched off in the following situations, if there are no other criteria present which prevent this:
• Large steering angle and driving speeds
• Strong braking (ABS)
To assess the road condition and thus for effective, proactive longitudinal torque distribution, the
coefficients of friction between the tires and roadway are calculated by the DSC. The wheel slip,
as well as the longitudinal and lateral acceleration, are evaluated.

Simple!
Appreciate 0
      11-25-2015, 10:05 AM   #113
vstolpner
Captain
25
Rep
673
Posts

Drives: 2019 F39 X2 m35i
Join Date: Sep 2015
Location: Vancouver, BC

iTrader: (0)

Lol

Do you have the same info for the E84 xDrive?
Appreciate 0
      11-27-2015, 11:26 AM   #114
Kennyboy
Private
United_States
4
Rep
87
Posts

Drives: 2014 X1 Xdrive 28i
Join Date: Apr 2014
Location: New York City

iTrader: (0)

Keep, for my 2014 will be the last X1 I will ever own. My next Bimmer is be the next generation 3 or 4 series I guess. No FWD will get my money, no!
Appreciate 1
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 05:19 PM.




xbimmers
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST