Powertrain for a vehicle and method for carrying out load changes

US9822860B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Johannes Kaltenbach · Friedrichshafen, DE
• Matthias Reisch · Ravensburg, DE
• Ulrich Kehr · Tettnang, DE
• Michael Preuß · Friedrichshafen, DE
• Kai Bornträger · Tettnang, DE

Key dates

• Filing date: Feb 12, 2014
• Grant date: Nov 21, 2017
• Expiry date: Sep 11, 2034

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2306/50
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A drive-train for a vehicle with at least one electric drive, which can be coupled via a driveshaft (2) to at least a first transmission ratio stage (i1) and a second transmission ratio stage (i2). At least one shifting mechanism is provided for engaging the transmission ratio stages (i1, i2). To carry out powershifts, the shifting mechanism includes at least one interlocking shifting element (5) and at least one frictional shifting element (6, 6A). Each of the transmission ratio stages (i1, i2) can be engaged by the interlocking shifting element (5) and at least one of the transmission ratio stages (i2) can be engaged both by the interlocking shifting element (5) and by the frictional shifting element (6). Methods for carrying out a powershift, between a frictional shifting element (6, 6A) and an interlocking shifting element (5) in the drive-train, are also disclosed.