Hybrid drivetrain having active torsional vibration damping, and method for carrying out the active torsional damping

US9933039B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Olaf Werner · Laufenburg (Baden), DE
• Michael Huber · Milpitas, US
• Carsten Angrick · Appenweier, DE
• Matthias Gramann · Neunkirchen, DE
• Martin Dilzer · Laufenburg (Baden), DE

Key dates

• Filing date: Dec 27, 2013
• Grant date: Apr 3, 2018
• Expiry date: Nov 29, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2131
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A drivetrain having an active torsional vibration damping and a method for carrying out the active torsional vibration damping, having an internal combustion engine being affected by torsional vibrations and having a crankshaft, a torsional vibration damper that is operatively connected to the crankshaft and has at least one operating point of low vibration isolation of the torsional vibrations and has a primary inertial mass associated with the crankshaft and an inertial mass associated with a gear input shaft of a gearbox, the inertial mass being rotatable relatively and limitedly with respect to the primary inertial mass against the action of a spring device. The drivetrain also includes an electric motor having a rotating mass operatively connected to the gearbox input shaft, and a control unit, the spring device being formed by linear springs, the rotating mass of the electric motor being designed as a secondary inertial mass.