ARC - How does it work?
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MBWorld Fanatic!
Joined: Oct 2009
Posts: 7,008
Likes: 2,198
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
ARC - How does it work?
I have the AMG Active Ride control (ARC) on our GLE 53. It's part of the AMG DYNAMIC PLUS Package, which is standard on the GLE 63S models. I like it a lot.
I am trying to figure out just what the car uses as input and controls, to actuate the active sway bars.
We had a 2020 GLE 450 with E-ABC, and the mechanism is entirely different.
The E-ABC uses a camera and adjusts or relaxes the suspension when it sees an approaching bump or dip.
The ARC doesn't use cameras, but it must use some sort of an accelerometer at the suspension, to sense a quick suspension movement from a bump and relax just that corner.
Whatever its mechanism, it does make a smoother ride than E-ABC, while increasing roll stiffness and improving handling.
Here's a screenshot of the Mercedes online configurator, with a description of the suspension.
"AMG ACTIVE RIDE CONTROL with roll stabilization
In addition to the capabilities and modes of AMG RIDE CONTROL+, the 48-volt architecture of the GLE allows for an enhancement offering active roll stabilization. Each axle employs an independently operating electromechanical actuator with an integrated planetary gear. The system can help reduce body roll and allows for more precise damping adaptation when cornering. In straight-line driving, it can enhance comfort by helping adapt to asymmetrical wheel movements such as bumps on one side of the road."
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And some text from a Daimler announcement with description of the suspension on a 2021 AMG GLE 63 S Coupe https://media.mbusa.com/releases/rel...rt-from-116000
"A number of new features in the 2021 AMG GLE 63 S Coupe also make it more agile and more dynamic than ever before. These features include innovative technologies such as: active roll stabilization, known as ACTIVE RIDE CONTROL,....
The ACTIVE RIDE CONTROL system uses two independently operating, electromechanical actuators at the front and rear axles, each with an integrated planetary gear. This means that the stabilization system not only reduces body roll when cornering, but also increases ride comfort while driving in a straight line, as stimuli from one-sided road bumps are balanced out."
I'm more interested in "How does it know what to do?" than "how the 48v suspension works," but any input that helps me understand the ARC would be nice.
Note - this isn't the same as older suspensions with the same name.
TIA
I am trying to figure out just what the car uses as input and controls, to actuate the active sway bars.
We had a 2020 GLE 450 with E-ABC, and the mechanism is entirely different.
The E-ABC uses a camera and adjusts or relaxes the suspension when it sees an approaching bump or dip.
The ARC doesn't use cameras, but it must use some sort of an accelerometer at the suspension, to sense a quick suspension movement from a bump and relax just that corner.
Whatever its mechanism, it does make a smoother ride than E-ABC, while increasing roll stiffness and improving handling.
Here's a screenshot of the Mercedes online configurator, with a description of the suspension.
"AMG ACTIVE RIDE CONTROL with roll stabilization
In addition to the capabilities and modes of AMG RIDE CONTROL+, the 48-volt architecture of the GLE allows for an enhancement offering active roll stabilization. Each axle employs an independently operating electromechanical actuator with an integrated planetary gear. The system can help reduce body roll and allows for more precise damping adaptation when cornering. In straight-line driving, it can enhance comfort by helping adapt to asymmetrical wheel movements such as bumps on one side of the road."
-----------
And some text from a Daimler announcement with description of the suspension on a 2021 AMG GLE 63 S Coupe https://media.mbusa.com/releases/rel...rt-from-116000
"A number of new features in the 2021 AMG GLE 63 S Coupe also make it more agile and more dynamic than ever before. These features include innovative technologies such as: active roll stabilization, known as ACTIVE RIDE CONTROL,....
The ACTIVE RIDE CONTROL system uses two independently operating, electromechanical actuators at the front and rear axles, each with an integrated planetary gear. This means that the stabilization system not only reduces body roll when cornering, but also increases ride comfort while driving in a straight line, as stimuli from one-sided road bumps are balanced out."
I'm more interested in "How does it know what to do?" than "how the 48v suspension works," but any input that helps me understand the ARC would be nice.
Note - this isn't the same as older suspensions with the same name.
TIA
Thread Starter
MBWorld Fanatic!
Joined: Oct 2009
Posts: 7,008
Likes: 2,198
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Has anybody gained knowledge of this suspension?
How do the Active Sway bars know what to do?
It must be more than the usual "combined inputs from yaw and pitch sensors," since it seems to operate predicatively.
How can it keep the car so flat at 1G, and still improve the ride?
I know, 800 lb-ft at each corner, but how are those lb-ft deployed?
It seems a lot more adaptive than Cadillac's Mag Ride, and better than M-B's E-ABC, for that matter.
How do the Active Sway bars know what to do?
It must be more than the usual "combined inputs from yaw and pitch sensors," since it seems to operate predicatively.
How can it keep the car so flat at 1G, and still improve the ride?
I know, 800 lb-ft at each corner, but how are those lb-ft deployed?
It seems a lot more adaptive than Cadillac's Mag Ride, and better than M-B's E-ABC, for that matter.
