Active differential and motor vehicle

US9945466B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Udo Pinschmidt · Gaimersheim, DE
• Thomas Schels · Jerichow, DE
• Maximilian Wolf · Vilsheim, DE

Key dates

• Filing date: Nov 11, 2014
• Grant date: Apr 17, 2018
• Expiry date: Feb 16, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2048/364
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An active differential for the controlled distribution of a drive torque generated by a drive motor to two output shafts includes a planetary gear train configured to couple the two drive shafts to a drive shaft of the drive motor, and a distributor motor including a distributor shaft. The distributor motor produces a torque, with a distribution of a drive torque to the two output shafts being dependent on the torque produced by the distributor motor. The distributor shaft and the planetary gear train are coupled by a coupling device which is configured to separate the distributor shaft from the planetary gear train when an operating parameter of the active differential exceeds a predetermined limit value. The operating parameter can hereby be an output torque difference between torques transmitted from the output shafts to the planetary gear train or a time derivative of the output torque difference.