Active suspension - how does it work?

[cannga]

Originally Posted by kenwelch

From the E65 Manual:...
Infinitely Variable Control Valve:
Without power, the maximum hydraulic resistance is set by the screw (1), which pre-tensions the valve spring (6). This is the hardest damper setting, also known as the failsafe (rest) setting.
...

^^^ Which page of the manual is all this information in please? I've looked and could not find any discussion about EDC in my car's main manual - am I missing a supplement? Thanks.

Very interesting discussion. I've always thought that the damper's valve is either opened or closed (2 states), was expression "infinitely variable" used in the BMW literature or was that your addition?

The EDC system used in all Porsche 911 is by Bilstein, called PASM, and even though the infinitely variable nature is implied in the manual, I was never sure until now.

[e-solo]

Originally Posted by EvenSteven

I always figured the little elves that are always frying eggs when I turn the engine off were responsible.

I like to believe this also. Now leave off bothering me so I can bake some cookies for Santa!

[Darkone]

Originally Posted by cannga

^^^ Which page of the manual is all this information in please? I've looked and could not find any discussion about EDC in my car's main manual - am I missing a supplement? Thanks.

Very interesting discussion. I've always thought that the damper's valve is either opened or closed (2 states), was expression "infinitely variable" used in the BMW literature or was that your addition?

The EDC system used in all Porsche 911 is by Bilstein, called PASM, and even though the infinitely variable nature is implied in the manual, I was never sure until now.

That is not in any owners manual. That appears to be a service manual. The kind that only service techs have that work at BMW. Interested also in that information as it appears to have pictures also!

[kenwelch]

Originally Posted by cannga

^^^ Which page of the manual is all this information in please? I've looked and could not find any discussion about EDC in my car's main manual - am I missing a supplement? Thanks.

Very interesting discussion. I've always thought that the damper's valve is either opened or closed (2 states), was expression "infinitely variable" used in the BMW literature or was that your addition?

The EDC system used in all Porsche 911 is by Bilstein, called PASM, and even though the infinitely variable nature is implied in the manual, I was never sure until now.

These are unmodified quotes from the BMW Technical Manuals used for training technicians. This information in not in the owners manual or consumer information. The "infinitely variable" expression is direct from the manual. My comments were only at the top of the post introducing the two quoted sources. I was trying to emphasize that BMW's system is an orifice based system that is not any "slower" in responding than other designs.

[jtodd_fl]

This thread is proof that Google is not infallible. My search for "fluid in variable orifices" yielded unexpected results. So I found this thread. I guess I should have included the word "porn".

(I am not smart enough to contribute much by way of technical expertise, so my job is the lull and my work is done here. Please carry on.)