Drive train of a motor vehicle having an internal combustion engine and a starter generator

US9175659B2 · kind B2 · utility

Assignee

• Dr. Ing. h.c. F. Porsche AG · DE

Inventors

• Wolfgang Benz · Burscheid, DE
• Stephan Mueller · Leonberg, DE

Key dates

• Filing date: Nov 13, 2013
• Grant date: Nov 3, 2015
• Expiry date: Nov 13, 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 drive train (1) of a motor vehicle has an internal combustion engine (2) with a crankshaft (6). A transmission (3) is connected downstream for driving at least one axle (5) of the motor vehicle. A starter generator (9) is attached to the crankshaft (6) of the internal combustion engine (2) via a spur gear mechanism (10). The spur gear mechanism (10) has a first drive train (11) with a switchable clutch (12) and a second drive train (13) with a switchable clutch or a freewheel (14) that is active during the starter mode of the starter generator (9). In a drive train of this type, the components for transmitting the torque of the starter generator (9) require only little space and, during starting, the crankshaft (6) of the internal combustion engine is decoupled from tensile forces and weights which would be observed when a belt drive is used.