Air Suspension Technical Info?

[Brian A]

I wonder how the desicant works in these types of systems. Does the desiccant need replacement at some point or does it run a resistance heater at some point and drive the moisture out?

Not sure if Rivian is the same or not but my 2015 Ram Limited had a factory air suspension. It was a closed system filled with nitrogen. If it ever let air in, it would continue to run but would warn the driver to get it serviced. If not, it would freeze in the winter time. I had it for 9.5 years and 80k miles with no issues with the air suspension.

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[Oldsmobile_Mike]

I would immediately buy that....if it was real....

Shame they don't print books anymore. When I was a kid, this was one of my most prized possessions:

Still have it. Although I'll probably never open it again, other than to smell the pages. ?

 

[R1Tom]

Shame they don't print books anymore. When I was a kid, this was one of my most prized possessions:

Still have it. Although I'll probably never open it again, other than to smell the pages. ?

I learned alot from books like that as a teen that was into cars. That one looks awesome!

 

[ukrivianfan]

I wanted to do some research on the air suspension system used by Rivian, but I can't find much info at all. What do we know about it so far?

Is it a closed system that uses nitrogen in an onboard pressure tank, similar to what Jeep uses?

Or is it an open system that uses ambient air without a pressure tank, similar to what Land Rover uses?

Does the system have an air dryer (desiccant) to help with moisture freeze during the winter?

Do we know who manufactures the air suspension components (air bags, compressor, valve block, etc...)?


I'm a big fan of air suspension systems and it would be nice to know a bit more about the system in the R1 vehicles. Not a lot of info is out there that I can find though...

Hi
I am the founder / ex owner of Dunlop Systems who developed and initially supplied the air suspension system for R1

 

[ukrivianfan]

What pressure does it operate at? Does it pull in make-up air in the event of a slow leak? Does the compressor have a temperature sensor that shuts it down at a predetermined temp? What temperature will it shut down?

 

[ukrivianfan]

Hi
Dunlop systems were the supplier
7 Bar nominal
Yes temperature sensor
Yes it will top up
It’s an AMK compressor unit
Open and desiccant yes

 

[Fozzy]

Hi
Dunlop systems were the supplier
7 Bar nominal
Yes temperature sensor
Yes it will top up
It’s an AMK compressor unit
Open and desiccant yes

Is the desiccant serviceable?

 

[ukrivianfan]

Is the desiccant serviceable?

You can change it yes
If you can get it molyseive 7X is excellent.
cant remember the exact temperature but it needs to be before the seals and motor winding laquer is put at risk so around 80C from memory ?

 

[jpmc86]

Hi
Dunlop systems were the supplier
7 Bar nominal
Yes temperature sensor
Yes it will top up
It’s an AMK compressor unit
Open and desiccant yes

Hi! Why the move to Firestone?

 

[ukrivianfan]

Hi! Why the move to Firestone?

U.S. based
Dunlop (now Pneuride) is China owned
That said I believe Rivian shafted them for sure

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