Drive train for a vehicle with connectable secondary axle

US8215440B2 · kind B2 · utility

Assignee

• GETRAG Driveline Systems GmbH · DE

Inventors

• Werner Hoffmann · Ludwigshafen, DE
• Hans-Peter Nett · Adenau, DE
• Michael Hoeck · Neunkirchen, DE
• Jan Potulski · Cologne, DE
• Matthias Adelt · Bochum, DE

Key dates

• Filing date: Apr 30, 2009
• Grant date: Jul 10, 2012
• Expiry date: Jun 15, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60K2023/043
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A drive train of a vehicle is disclosed which comprises a permanently driven primary axle and a secondary axle connectable to the primary axle via a switch-on device with a switch-on mechanism, whereby the secondary drive train output via side shaft couplings is transferred to the drive wheels of the secondary axle. Because the switch-on mechanism and/or the side shaft couplings have frictionally engaged couplings, it can be that when the secondary axle is uncoupled, the shutdown section of the secondary drive train located between the switch-on device and the side shaft couplings is uncoupled both from the primary axle and from the secondary drive wheels, such that there is no more power loss in this shutdown section, whereby connecting the secondary drive train during travel is possible all the same and losses in comfort and practicability do not have to be tolerated.