Car Tech 101: Understanding adaptive suspension
On this Jaguar XJ, for example, I've got drive controls that include a Sport mode, a Dynamic's mode, and those speak to the adaptive suspension which Jag's engineers say allowed them to monitor for almost 900 parameters of the vehicle's relationship with the road and gravity up from about 80 on a typical dead steel spring suspension.
Now, whether you're monitoring 80 or 800 parameters of
suspension and vehicle relationship with the road, there are really just four major technology groups that get that done.
There's active pneumohydraulic.
This mouthful uses a combination of pumps and accumulators to move hydraulic fluid and compressed nitrogen gas to the car's four corners as needed in milliseconds to take over the functions of both shock absorption and sway control.
It's very exotic and expensive.
We've driven it on the McLaren MP4-12C
where it keeps the car almost oddly leveling corners but also kept the ride compliant.
Then, there's active electromagnetic.
This system replaces all that pneumohydraulic plumbing and pumping with linear electric motors at each corner.
Its response can be even faster and it doesn't strew plumbing all over the car.
The Bose Company of audio fame oddly enough is well known as an innovator in this technology and it actually derives some of the basics from the study of waves and electromagnetics,
a lot like speakers.
Okay, that's active.
Now, onto the adaptive or semi-active technologies.
These are so-named because all they do is react to what the road and the car are doing.
They don't actually bring their own forces to that relationship.
First up is adaptive solenoid or adaptive valve.
Now, your typical shock works by passing hydraulic fluid through a series of small valves or orifices which limit the rate that
fluid can move back and forth.
That limits the movement of the shock, and therefore, the movement up and down of the car.
Adaptive valve or solenoid tech gives you electronic control over those shock valves.
So, the rate at which fluid moves around inside the shock can be changed on the fly, therefore varying the shocks damping behavior.
That brings us to adaptive magnetorheological.
It's a mouthful that perhaps the fastest growing adaptive suspension right now.
This GM-developed system uses a special kind of
shock fluid with particles suspended in it that react to electric current, and simply put, that makes the fluid present itself to the mechanism more or less viscous and that varies the damping effect in very subtle ways that can be changed very rapidly and with great range, just by varying the current you apply to the fluid.
Oh, by the way, if you see a wire coming off a shock absorber like this here in the center of the shock tower, that's a dead giveaway.
You've got adaptive suspension, in this case magnetorheological technology, and this is
the current flowing through here.
Now, so far, these adaptive suspension systems have gone in two directions.
One is for extremely high-performance cars and the other is for very luxurious, high-comfort vehicle application.
We're not seeing this show up in a lot of mainstream cars yet because they don't have an everyday efficiency component.
They're never gonna save you any MPG or make the car any less expensive.
So, what we're talking about here is a still mid- to upper-class tech if you wanna divide the car market that way,
but as this technology comes down in price, as of course it will, expect to see it on more cars in the sub $30,000 class.
Up Next
Crash Testing New Electric Cars Proves They're Typically Safer
Up Next
Crash Testing New Electric Cars Proves They're Typically Safer
See What Makes the Best Tire for Your Electric Car
See What Makes the Best Tire for Your Electric Car
Why Are So Many Electric Cars, Scooters and Bikes Burning?
Why Are So Many Electric Cars, Scooters and Bikes Burning?
Seen the New 2023 Prius? Here's Why It's Turning Heads
Seen the New 2023 Prius? Here's Why It's Turning Heads
The Bestselling EVs of 2022
The Bestselling EVs of 2022
Best Dash Cams: A Buying Guide
Best Dash Cams: A Buying Guide
GM's Electric Pickups Head On: Comparing the Sierra EV to the Silverado EV
GM's Electric Pickups Head On: Comparing the Sierra EV to the Silverado EV
Meet a Mind-Bending Hybrid: The Sono Sion Solar-Grid EV
Meet a Mind-Bending Hybrid: The Sono Sion Solar-Grid EV
These Are the Cars That Qualify Now for the New Tax Credit
These Are the Cars That Qualify Now for the New Tax Credit
Don't Buy an EV Until You See the Most Important Ones Coming in 2023
Don't Buy an EV Until You See the Most Important Ones Coming in 2023
Tech Shows
Latest News All latest news
Robosen's Megatron Transformer Is Too Much Fun for an Evil Robot
Robosen's Megatron Transformer Is Too Much Fun for an Evil Robot
Apple May Give FineWoven Accessories One More Season
Apple May Give FineWoven Accessories One More Season
US vs. TikTok: What Happens Next
US vs. TikTok: What Happens Next
Battle of the Humanoid Robots: MenteeBot Is Ready
Battle of the Humanoid Robots: MenteeBot Is Ready
What to Expect at Apple's May 7 iPad Event
What to Expect at Apple's May 7 iPad Event
Did a Week With the Apple Watch Make Me Use My iPhone Less?
Did a Week With the Apple Watch Make Me Use My iPhone Less?
Most Popular All most popular
First Look at TSA's Self-Screening Tech (in VR!)
First Look at TSA's Self-Screening Tech (in VR!)
Samsung Galaxy S24 Ultra Review: More AI at a Higher Cost
Samsung Galaxy S24 Ultra Review: More AI at a Higher Cost
'Circle to Search' Lets Users Google From Any Screen
'Circle to Search' Lets Users Google From Any Screen
Asus Put Two 14-inch OLEDs in a Laptop, Unleashes First OLED ROG Gaming Laptop
Asus Put Two 14-inch OLEDs in a Laptop, Unleashes First OLED ROG Gaming Laptop
Samsung Galaxy Ring: First Impressions
Samsung Galaxy Ring: First Impressions
Best of Show: The Coolest Gadgets of CES 2024
Best of Show: The Coolest Gadgets of CES 2024
Latest Products All latest products
Robosen's Megatron Transformer Is Too Much Fun for an Evil Robot
Robosen's Megatron Transformer Is Too Much Fun for an Evil Robot
Battle of the Humanoid Robots: MenteeBot Is Ready
Battle of the Humanoid Robots: MenteeBot Is Ready
2025 Audi Q6, SQ6 E-Tron: Audi's Newest EV Is Its Most Compelling
2025 Audi Q6, SQ6 E-Tron: Audi's Newest EV Is Its Most Compelling
Hands-On with Ford's Free Tesla Charging Adapter
Hands-On with Ford's Free Tesla Charging Adapter
Nuro R3 is an Adorable Self-Driving Snack Bar
Nuro R3 is an Adorable Self-Driving Snack Bar
First Look: The $349 Nothing Phone 2A Aims to Brighten Your Day
First Look: The $349 Nothing Phone 2A Aims to Brighten Your Day
Latest How To All how to videos
Tips and Tricks for the AirPods Pro 2
Tips and Tricks for the AirPods Pro 2
How to Watch the Solar Eclipse Safely From Your Phone
How to Watch the Solar Eclipse Safely From Your Phone
Windows 11 Tips and Hidden Features
Windows 11 Tips and Hidden Features
Vision Pro App Walkthrough -- VisionOS 1.0.3
Vision Pro App Walkthrough -- VisionOS 1.0.3
Tips and Tricks for the Galaxy S24 Ultra
Tips and Tricks for the Galaxy S24 Ultra
TikTok Is Now on the Apple Vision Pro