Porsche's Active Suspension

https://www.motor1.com/features/712424/porsche-active-ride/

by hotdailys • 2 years ago

44 9 2 years ago

The motor-pump units are powered by the 400-volt battery used in Panamera E-Hybrid models and can put 2,248 pounds of force into each corner of the car

That'll put some spring in your step! Nice. I wonder what the motion range is, and whether there's other limitations that affect acceleration.

Bose (the sound people) were trying to get in on the game & had a variety of test-bed cars, for a long while. But weight was huge, the computer processing sucked, and the linear motors were expensive as heck. https://incompliancemag.com/bose-electromagnetic-car-suspens... https://www.extremetech.com/cars/259042-bose-sells-off-revol...

Now that we have 400V systems in our vehicles, and now that we make utterly kick ass electric motors, and now that computers quake, it's no shock this comes back. The main challenge seems like it'd be knowing what you want the car to do when you have active ride control.

The only demoes we've seen of Porsche Active Ride are ride stabilizing over bumps, which to be fair is probably the most useful thing for most people. But I'm very curious to see what happens when people start racing with active ride control, to see how cars can start taking performance advantage of these systems. This isn't like what Bose did, with electromagnetic control: the electric motor runs an air pump that drives an air spring. That sounds very practical, but it returns me to wondering about factors like acceleration and jerk/reaction speed (changes in acceleration).

steelbrain• 2 years ago

and now that we make utterly kick ass electric motors, and now that computers quake, it's no shock this comes back

Maybe I'm hallucinating but I have read this EXACT line somewhere else before...

sorenjan• 2 years ago

There's something strange going on, the comment you replied to was posted three days ago according to the user's profile, but it says 43 minutes ago here. You probably read it when it was new, I recognized it as well.

https://imgur.com/a/wkkbZ1l

boatloof• 2 years ago

The Taycan Turbo GT uses Active Ride and has been destroying tesla's records at the Nürburgring[1] and Laguna Seca[2], it's only 2 seconds slower than the Rimac Nevera around the ring as well which is pretty funny. [1]https://www.youtube.com/watch?v=2Lg7BXcZAg8 [2]https://www.youtube.com/watch?v=jM7iRf7PggQ

jasonwatkinspdx• 2 years ago

The only demoes we've seen of Porsche Active Ride are ride stabilizing over bumps, which to be fair is probably the most useful thing for most people. But I'm very curious to see what happens when people start racing with active ride control, to see how cars can start taking performance advantage of these systems.

The article embeds a youtube video showing a record lap at Nurburgring, and specifically calls out a moment where a conventional suspension would result in a small hop, which is entirely eliminated by the suspension.

The video is worth watching if you have any performance driving experience. The car looks spooky stable in the corners. It's very clearly more potent than active damper coil overs. In particular look at how it enters and exits the famous banked carousel corners. It's insanely crisp.

Also it's an oil pump, not air pump. The suspension is like an oleo strut as used on airplanes, but with a pump to dynamically change the oil pressure.

belter• 2 years ago

Similar to Mercedes?

"Mercedes-Benz S-Class stability system" - https://phys.org/news/2013-09-mercedes-benz-s-class-stabilit...

donjigweed• 2 years ago

lol 5200lbs curb weight

don’t care how good the suspension is, that thing ain’t getting around corners very well

Porsche's Active Suspension

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