This is a typical planetary differential with a double planet (i = +2). Ring gear is the differential input the wheels are connected to the sun and the planet carrier.
*SCHAEFFLER Lightweight Differential - Animation*
The series of animated differential mechanisms continues here with the planetary differential from Schaeffler. The slower wheel turns with 33,3% of the input speed and the faster wheel turns therefore 166,7% of the input speed.
*Planetary Differential - Animation*
As a comparison to the Schaeffler differential you can take take a look at a conventional planetary differential.
The ring gear is the speed input and the differential provides the the speed to the carrier and the sun which are connected to the wheels.