Torque transmission device

US9464614B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventor

• Hartmut Mende · Bogen, DE

Key dates

• Filing date: Nov 14, 2012
• Grant date: Oct 11, 2016
• Expiry date: Mar 30, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/134
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A torque transmission device for starting an internal combustion engine using a permanently engaged starter motor for a start-stop system. An annular gear connected with the starter motor includes a bearing for decoupling the starter motor from the engine based upon the rotational speed difference between the internal combustion engine and the starter motor. The device includes a freewheel for the speed-controlled coupling of the starter motor to the internal combustion engine so that torque is transmitted between the annular gear and the engine crankshaft. An annular gear carrier is arranged between the annular gear and the freewheel. The bearing and the freewheel are arranged radially relative to each other so that at least the freewheel and the bearing are in communication with an oil chamber of the engine. First and second seal elements are provided for sealing the engine oil chamber of the internal combustion engine.