Electromagnetic Differential advantage

Hi,
     1.If u use electromagnetic differential no need the lubricating oil.
     2.There is no sun & planet gear.   

Importend parts if the Differential

Hi,  

            Conventional differential  vs  Electomagnetic differential
     In the Conventional Differential there is the sun and planet gear.                                                                          In the Electromagnetnic Differential there is a magnet ,steering wheel sensor,spring,shaft(splines).