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Old 04-20-2017, 07:41 AM
Maxwagen Maxwagen is offline
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How do dynamic dampers actually work?

For instance on a CPO F31 x-drive, are the dynamic dampers adjusted via the drive settings in the car? (Comfort, sport, sport+ etc). I'm assuming that the dampers are connected electronically to the car. If that's the case, 1. How do after market dampers work with this, and 2. Can dynamic dampers be added as aftermarket and coded to work with the dynamic settings?

I'm only asking because a CPO wagon with m-sport DHP is so damn hard to find.


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  #2  
Old 04-20-2017, 08:52 AM
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From BMW Dynamic Damper Control.
The Dynamic Damper Control makes it possible to ideally adjust the damper characteristics to suit any given driving situation, improving comfort and driving dynamics.
In addition to the standard Comfort setting, which minimises bumps and other unpleasant vehicle movements, there are two other programs available: the Sport and Sport+ modes. In these modes, the dampers are automatically tightened to allow for a sportier driving style. Electronic Damper Control.
Electronic Damper Control (EDC) automatically or manually adjusts each damper to suit the driving conditions meaning you enjoy outstanding comfort along with the best in BMW on-road safety. EDC reduces variations in wheel load, ensures tyres have excellent traction and counteracts bodyshell movement regardless of the weight your automobile may be carrying or the state of the road's surface.

Sensors constantly monitor all factors influencing the vehicle's behaviour and occupants' comfort, in order to precisely adjust the damper control. In a fraction of a second, the signals are analysed by the EDC microprocessor and orders are sent to the actuators on the shock absorbers, which, with the help of magnetic valves, are variably adjusted to provide optimal suspension. Thanks to Electronic Damper Control, the tendency for the nose to dip when braking is practically eliminated. The influence of potholes and unevenness on the road surface is reduced to minimum.

In addition to increased driving comfort and improved roll characteristics on the tyres, EDC also contributes to vehicle stability and safety. By reducing the nose's tendency to dip when braking and improving the tyre traction, EDC shortens the braking distance when braking heavily. The damper adjustment means that even when braking with ABS the vehicle chassis remains upright on the road and all four wheels have the largest possible contact to the surface.

The Driving Experience Control switch with ECO PRO lets the driver choose between various programs (like COMFORT, NORMAL, SPORT or SPORT+) and adjust the suspension to suit his individual needs. From BIMMERFEST http://www.bimmerfest.com/forums/sho...d.php?t=934343 Sorry if this doesn't address you question.
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Old 04-20-2017, 10:03 AM
cleaver cleaver is online now
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I ordered my F31 with DHP, and love the quicker steering and dynamic dampers. As another poster has often said, it's more than simply soft or firm settings because it's dynamic. I'm not surprised it's hard to find a car with DHP (which is why I ordered a car). If I were you, I'd simply get a "regular" F31 (with its very soft x-Drive suspension) and install a firmer shock like Bilstein. Supposedly, Bilstein is working on a replacement for the adaptive shock, but that apparently only just hit the market for Europe; who knows how long it will take for US applications.
BTW, I tried Dinan Shockware and didn't like it on my wagon. The OEM settings are surprisingly good.
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Old 04-20-2017, 12:14 PM
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@Cleaver - You didn't run your car in then?

150mph with 700 miles on the clock in 7th.

Good picture though!!!
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Old 04-20-2017, 12:48 PM
cleaver cleaver is online now
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Yes, I broke it in, to a certain extent. But when would I ever get a chance for top speed on the autobahn (or to run the Nurburgring the day after)? And no, I didn't take the pic; my co-pilot did while both of my hands were firmly on the wheel.
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Old 04-20-2017, 12:59 PM
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I don't blame you!

Just got myself a 330d F31 with only 500 miles on the clock and it is so just so different to my 318d E91. Ex BMW car with every option you could buy at the time.
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Old 04-20-2017, 02:36 PM
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The revs are not that terrible.
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Old 04-20-2017, 10:45 PM
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Quote:
Originally Posted by cleaver View Post
Yes, I broke it in, to a certain extent. But when would I ever get a chance for top speed on the autobahn (or to run the Nurburgring the day after)? And no, I didn't take the pic; my co-pilot did while both of my hands were firmly on the wheel.
LOVE that picture. 700 miles is plenty of a break in under the circumstances. I especially love that you have the stupid gas mileage gauge pegged. Woot!
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Old 04-21-2017, 05:28 AM
Maxwagen Maxwagen is offline
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Quote:
Originally Posted by cleaver View Post
I ordered my F31 with DHP, and love the quicker steering and dynamic dampers. As another poster has often said, it's more than simply soft or firm settings because it's dynamic. I'm not surprised it's hard to find a car with DHP (which is why I ordered a car). If I were you, I'd simply get a "regular" F31 (with its very soft x-Drive suspension) and install a firmer shock like Bilstein. Supposedly, Bilstein is working on a replacement for the adaptive shock, but that apparently only just hit the market for Europe; who knows how long it will take for US applications.
BTW, I tried Dinan Shockware and didn't like it on my wagon. The OEM settings are surprisingly good.
So the "comfort, sport, sport+" settings have nothing to do with the dynamic shocks?
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Old 04-21-2017, 06:24 AM
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Quote:
Originally Posted by Maxwagen View Post
So the "comfort, sport, sport+" settings have nothing to do with the dynamic shocks?
Yes they certainly do. The shocks firm up in progression through the driving modes. But remember, regardless of which mode you're in, They're always working/adjusting.
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Old 04-21-2017, 07:38 AM
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Quote:
Originally Posted by Maxwagen View Post
So the "comfort, sport, sport+" settings have nothing to do with the dynamic shocks?
As said above the shocks firm up or loosen in steps but are always in real time mode. The 3 settings also effect shift speed, RPM shift points, steering wheel feel (VSS), as well as throttle mapping.

In combination with the button selector, shift handle position & paddle usage there is a lot of cross function outcomes available among the running hardware.
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Old 04-21-2017, 10:46 AM
Maxwagen Maxwagen is offline
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OK so couple more questions:

1. If you don't have the DHP, then do the driving modes affect the suspension at all?

2. Can a car be coded to make use of third party or OEM adaptive dampers that weren't installed at the factory?
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Old 04-21-2017, 02:41 PM
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Quote:
Originally Posted by Maxwagen View Post
OK so couple more questions:

1. If you don't have the DHP, then do the driving modes affect the suspension at all?

2. Can a car be coded to make use of third party or OEM adaptive dampers that weren't installed at the factory?
Steering if you have a stand alone VSS is still effected. Have no idea about 3rd party fixes.
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Old 04-23-2017, 06:13 AM
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Quote:
Originally Posted by Maxwagen View Post
OK so couple more questions:

1. If you don't have the DHP, then do the driving modes affect the suspension at all?

2. Can a car be coded to make use of third party or OEM adaptive dampers that weren't installed at the factory?
1. No, you get higher rpms.
2. I don't know of any company installing 3rd party adaptive dampers. I would stick to the BMW OEM factory installed version.
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