Is the eLSD a "Torque Vectoring Diff" ???
Thread Starter
Burning Brakes
Joined: Oct 2017
Posts: 883
Likes: 407
Is the eLSD a "Torque Vectoring Diff" ???
So that's it! For you guys who really know the technicalities of these cars......is the electronic limited slip a torque vectoring differential? Or is it some kind of electronically controlled locking differential? Something else? Let me know!
Team Owner
Joined: Sep 2005
Posts: 20,352
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From: Ventura County, Calif
There is a lot of tech info available in the Ask Tadge Forum. Should check that out when you have time. Here's a dissertation on the eLSD that might help you:
https://www.corvetteforum.com/forums...d-display.html
https://www.corvetteforum.com/forums...d-display.html
Melting Slicks
Joined: May 2004
Posts: 2,420
Likes: 138
No. The eLSD is purely lockup only, so you get sweet open diff turn in, can progressively lock up as you straighten the wheel out, making sure you can get as much power to the ground as possible, and can instantly tighten on fast transitions to settle the rear of the car.
It will not direct power to an individual wheel though to change the attitude of the car.
It will not direct power to an individual wheel though to change the attitude of the car.
Last edited by 4GS7; Oct 30, 2018 at 09:25 PM.
Racer
Joined: Apr 2007
Posts: 475
Likes: 183
From: Poughkeepsie NY
(Thanks Rick T.)
The eLSD is Zero lock up to Full lock-up and anything in between based on several inputs. eLSD is fully integrated with the stability control and Performance Traction Management (PTM) systems.
According to Jason Kolk eLSD integration engineer:
" At the most basic level, the eLSD can have a subtle but profound effect on the handling of the car. We really consider it to be a 'base chassis' component. It's something that plays a big part in setting up the character of the car.
The eLSD is Zero lock up to Full lock-up and anything in between based on several inputs. eLSD is fully integrated with the stability control and Performance Traction Management (PTM) systems.
According to Jason Kolk eLSD integration engineer:
" At the most basic level, the eLSD can have a subtle but profound effect on the handling of the car. We really consider it to be a 'base chassis' component. It's something that plays a big part in setting up the character of the car.
- Off-throttle, more eLSD coupling adds stability, but too much can be a bad thing. The eLSD is connecting the two wheels so in a turn it's trying to slow down the outside wheel and speed up the inside wheel. In other words the eLSD clutch coupling is trying to oppose the direction that the car is turning, so setting this off-throttle level is pretty important to keeping the car feeling agile. In a steady turn this can help tune the amount of understeer the car has. In highly dynamic maneuvers, this results in something that we call yaw damping where it will reduce the rotation rate of the car.
- When the driver is on-throttle, the eLSD clutch can shift torque from the inside wheel to the outside wheel. This has the combined effect of minimizing or eliminating inside wheel spin, but it also controls how much it feels like the car turns with the throttle. More torque on the outside and less on the inside will help the car turn - to a point, but that's the balance we're constantly searching for while we tune the software.
