Gear device having at least one electrical variator for the continuous variation of a transmission and comprising power split

US9341242B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Manuel Gotz · Ravensburg, DE
• Gerhard Bailly · Friedrichshafen, DE

Key dates

• Filing date: Feb 1, 2013
• Grant date: May 17, 2016
• Expiry date: Feb 1, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/62
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A transmission device with at least one electrical variator for the continuous variation of a transmission ratio and with power branching. A planetary gear unit is coupled to a transmission input shaft and to a shaft of the electrical variator, and also to a change-speed gearbox, in the area of which, in combination with the electrical variator, a number of transmission ratio ranges can be produced. Within the transmission ratio ranges, the transmission ratio of the transmission device can in each case be varied continuously by the electrical variator. Along the power path, between the shaft of the electrical variator connected to the planetary gear unit and the planetary gear unit itself, a mechanism is provided where at least part of the torque transmitted along the power path, between the electrical variator and the planetary gear unit, can be reinforced.