Mittendifferential – Lecture

Hello guys, I have the task of holding a presentation (lecture) on the topic of middle-differential. I find this a shitty topic, the only thing I know that the middle-differential mechanically detects when more power can be transferred and then distributes it. I don’t know how it does it and also don’t know about it. Could someone explain the function of such a part briefly? I think it fits best in the field of off-wheel! For your help would be i thank you I couldn’t find anything useful on the subject at kfz-tech and google, I only found something about a torsen at Audi – but that doesn’t really bring me any further. Greeting Benjamin