Home > Technical (L322) > How do Adaptive Dynamics dampers work? |
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Philip Member Since: 05 Jan 2010 Location: UK Posts: 2564 |
Yes, magnetorheological - Delphi/BWI MagneRide. |
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21st Dec 2017 3:43pm |
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TomCobbly Member Since: 29 Jun 2016 Location: Guildford Posts: 122 |
Thanks for confirming. That must be what the wires are for!
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21st Dec 2017 4:01pm |
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Cam-Tech-Craig Member Since: 03 Aug 2011 Location: Gloucestershire Posts: 16284 |
VERY expensive yes sir |
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21st Dec 2017 4:12pm |
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PaulTyrer Member Since: 22 Jul 2013 Location: Devizes, Wiltshire Posts: 1252 |
Very interesting how these posts tend to clump together!
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21st Dec 2017 4:38pm |
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GraemeS Member Since: 06 Mar 2015 Location: Wagga area Posts: 2475 |
According to the WSM the dampers have an orifice that bypasses the valves. The orifice opening is ecu-controlled.
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21st Dec 2017 8:01pm |
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stan Site Moderator Member Since: 13 Jul 2010 Location: a moderate moderated moderator moderating moderately in moderation Posts: 35297 |
thats interesting re the calibration, how do you do that then? ... - .- -.
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21st Dec 2017 8:26pm |
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TomCobbly Member Since: 29 Jun 2016 Location: Guildford Posts: 122 |
Well they are nothing like the way magnetorheological dampers work. They work by changing the viscosity of the fluid in the damper by applying a magnetic field controlled by an ecu........ apparently!
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21st Dec 2017 8:31pm |
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Baltic Blue Member Since: 13 Aug 2015 Location: North Wales Posts: 3766 |
GraemeS,
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21st Dec 2017 9:39pm |
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TomCobbly Member Since: 29 Jun 2016 Location: Guildford Posts: 122 |
Looks like I have the nitrogen gas and oil filled units as described by GreameS. I wonder if the Delphi MagneRide ones can be fitted when the time comes to replace the originals. Even if they fitted I guess they use a different ecu. 2011 4.4 TDV8 Vogue SE
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21st Dec 2017 10:13pm |
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GraemeS Member Since: 06 Mar 2015 Location: Wagga area Posts: 2475 |
My IIDtool under CALIBRATION lists adaptive dynamics. At 'continue yes/no', 10 seconds of calibration starts when Yes is selected so the vehicle needs to be driving on a suitable surface. If stationary then the result will be excessively soft dampers or if driving on very rough off-road conditions then the dampers will be excessively firm, so somewhere in between is needed. The IIDtool does not provide the ability to restore the original calibrations, presumably as no defaults exist within the control unit. |
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21st Dec 2017 11:41pm |
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stan Site Moderator Member Since: 13 Jul 2010 Location: a moderate moderated moderator moderating moderately in moderation Posts: 35297 |
thanks graeme..
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22nd Dec 2017 6:53am |
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GraemeS Member Since: 06 Mar 2015 Location: Wagga area Posts: 2475 |
A softer ride but perhaps wallowing, even on secondary roads not necessarily particularly rough roads. Striking the right balance might take a few calibrations. If the ride is too soft then find a bumpier surface for another calibration, perhaps noting what stretches of road are used so that in future when they get too soft, another calibration can be done on the same stretch of road to restore the desired ride. Mine had deteriorated to the point that I was about to order a pair of Bilstein replacements for the rear to see if they tidied-up the ride enough to warrant replacing the fronts too, but found the calibration option just in time. When they eventually are too worn to do a proper job and new ones fitted then another calibration will be needed otherwise the ride will be far too firm. |
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22nd Dec 2017 7:36am |
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stan Site Moderator Member Since: 13 Jul 2010 Location: a moderate moderated moderator moderating moderately in moderation Posts: 35297 |
didnt think of the possible 'wallow' effect..i think i'll leave well alone in case i mess it up...thanks chap ... - .- -.
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22nd Dec 2017 7:43am |
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Philip Member Since: 05 Jan 2010 Location: UK Posts: 2564 |
Interesting - this is a cutaway from the 2010 press pack, which shows what looks like (I think) a Bilstein DampTronic damper (as per the manual excerpt above). Most part numbers for the combined shock/bag/strut unit suggest BWI/Delphi as OEM though.
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22nd Dec 2017 3:10pm |
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