Torque vectoring axle assembly

B - Operations – Transporting – 60 – K

Patent

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Details

B60K 17/344 (2006.01) F16H 48/06 (2006.01) F16H 57/08 (2006.01)

Patent

CA 2595577

A drive axle assembly includes first and second axleshafts connected to a pair of wheels and a drive mechanism operable to selectively couple a driven input shaft to one or both of the axleshafts. The drive mechanism includes a differential, a speed changing unit operably disposed between the differential assembly and one of the first and second axleshafts, and first and second mode clutches. The first mode clutch is operable to engage the speed changing unit for reducing the rotary speed of the second axleshaft relative to the rotary speed of the first axleshaft. The second mode clutch is operable to engage the speed changing unit for increasing the rotary speed of the second axleshaft relative to the rotary speed of the first axleshaft. A control system controls actuation of both mode clutches.

L'invention concerne un ensemble d'essieu moteur à vecteur de couple, qui comprend un premier et un second arbres d'essieu reliés à une paire de roues, et un mécanisme d'entraînement pouvant coupler sélectivement un arbre d'entrée mené à un ou aux deux arbres d'essieu. Le mécanisme d'entraînement comprend un différentiel; une unité de changement des vitesses disposée de manière fonctionnelle entre l'ensemble d'essieu et le premier ou le second arbre d'essieu; et des embrayages de premier et de second modes. L'embrayage de premier mode est mis en oeuvre pour enclencher l'unité de changement des vitesses afin d'augmenter la vitesse de rotation du second arbre d'essieu relativement à la vitesse de rotation du premier arbre d'essieu. Un système de commande commande le déclenchement des deux embrayages de mode.

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