View Single Post
Old 10-23-2015, 10:05 PM   #323 (permalink)
e*clipse
Permanent Apprentice
 
Join Date: Jul 2010
Location: norcal oosae
Posts: 523
Thanks: 351
Thanked 314 Times in 215 Posts
Quote:
Originally Posted by freebeard View Post
That's awesome. So there is no direct connection between the two drives and their respective CV joint?
Right. That's part of the point of this project. I started by looking into making a spool for the differentials. The problem is making custom spools and adapters ( custom driveshafts, splines, etc ) was about the same cost as this. It was also a compromise, because the double drive system using spools on seperate MGR's is much wider and asymmetrical. Also the lubrication/cooling system issues wouldn't be addressed. Yes, an external cooler could help, but not completely solve the cooling problem. This setup allows the system to be mounted forward or backward with just a small adjustment in the pump mechanism.

The motors will be driven with torque controlled FOC, so when the motors' output torque is balanced, the effect would be the same as an open differential. However, it doesn't have to be balanced - the torque can be whatever is best at that moment. The serious advantage of this system is - well look at that Mercedes with torque vectoring.

- E*clipse
  Reply With Quote