Active differential and motor vehicle

US10060523B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Udo Pinschmidt · Gaimersheim, DE
• Thomas Schels · Jerichow, DE

Key dates

• Filing date: Nov 11, 2014
• Grant date: Aug 28, 2018
• Expiry date: Oct 21, 2035

Classification

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

Abstract

An active differential for the controlled distribution of a drive torque generated by a drive motor to two drive 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 drive shafts being dependant on the torque produced by the distributor motor. The distributor shaft and the planetary gear train are coupled by a coupling device which only transmits a torque from the planetary gear train to the distributor shaft when a rotational speed difference between rotational speeds of the two output shafts exceeds a predetermined limit value and when a connection condition depending on an operating condition of the distributor motor is satisfied.