Zf Friedrichshafen Ag

Friedrichshafen Ag

Thomas Martin

Fabian Kutter

Johannes Kaltenbach

Michael Wechs

Stefan Beck

Matthias Horn

Uwe Griesmeier

Stefan Renner

Jens Moraw

Gerhard Niederbrucker

Kai Bornträger

Johannes Glückler

Oliver Schaudt

Peter Ziemer

Thomas Riedisser

Mladjan Radic

Martin Brehmer

Max Bachmann

Hagen Doepfert

Eckhardt Lübke

Juri Pawlakowitsch

Bernard Hunold

Christian Michel

Ingo Pfannkuchen

Reinhard Vollmar

Michael Preuß

Thomas Schneider

Oliver Bayer

Alexander Thorwart

Thomas Kroh

Matthias Hom

A gearbox has an input shaft, an output shaft, three shifting elements, and three planetary gearsets each having a sun shaft, ring gear shaft, and web shaft. The first sun shaft, the second sun shaft, and the input shaft are connected rotationally fixed. Rotationally fixed connections are made between the first ring gear shaft and a stationary component, the first web shaft and the second ring gear shaft, the second web shaft and the third sun shaft, and the third web shaft and the output shaft. Closing the first shifting element connects the third ring gear shaft rotationally fixed to a stationary component. Closing the second shifting element connects in a rotationally fixed manner the first web shaft, the second ring gear shaft, the third web shaft, and the output shaft. Closing the third shifting element connects rotationally fixed two of the three shafts of the third planetary gearset.

Gearbox and drive unit with such a gearbox

A motor vehicle transmission () has a first drive input shaft (), a second drive input shaft (), a drive output shaft (), and a first planetary gearset (P), a second planetary gearset (P) and a third planetary gearset (P), where the drive input shafts () are designed in each case for coupling to a respective drive machine. In addition, at least four shifting elements in the form of a first shifting element (B), a second shifting element (C), a third shifting element (E), and a fourth shifting element (F) are provided, at least functionally. The motor vehicle transmission can be part of a drive unit (), a vehicle drive axle, a hybrid or electric vehicle and the subject of a method for operating a motor vehicle transmission.

Motor vehicle transmission for an at least partially electrically driven motor vehicle

A drive unit has first and second electrical machines arranged axially parallel, a manual gearbox arranged axially parallel to the electrical machines, a differential, a drive shaft, an output shaft, and a positive-locking shift unit having a first shift element, a second shift element, and a sliding sleeve displaceable via a first actuator into one of three shift positions. In a first shift position, the first shift element is closed and the second electrical machine is connected to the drive shaft with an actuating effect; in a second shift position, both shift elements are open and the second electrical machine is decoupled from the gearbox; in a third shift position, the second shift element is closed and the second electrical machine is connected to the output shaft with an actuating effect. The drive shaft is hollow, and the output shaft is arranged within the drive shaft.

Drive unit for a vehicle

A motor vehicle transmission () includes a drive shaft (), an output shaft (), and a first planetary gear set (P), a second planetary gear set (P), and a third planetary gear set (P). The drive shaft () is provided for coupling to at least one drive engine. The first planetary gear set (P) is positioned axially at least overlapping with the second planetary gear set (P) and is arranged radially on the inside of the second planetary gear set (P). Furthermore, a shift element (A) is provided at least functionally. The invention also relates to a drive unit (), an electrically drivable motor vehicle drive axle, a hybrid or electric vehicle and a method for operating a motor vehicle transmission.

An electric transmission () for a motor vehicle drive train () includes a transmission input shaft () for operatively connecting the electric transmission to an electric prime mover (), a reduction gear () for reducing a rotational speed of the electric prime mover, a transmission () for establishing gear steps, including a first planetary gear set (RS) and a second planetary gear set (RS), a first output shaft () and a second output shaft () for transmitting drive power from the electric transmission, and a plurality of shift elements (B, C, D) for engaging the gear steps. A planet carrier of the first planetary gear set is drivingly connected to a planet carrier of the second planetary gear set, and a sun gear of the first planetary gear set is drivingly connected to a ring gear of the second planetary gear set.

Transmission for E-axle

A drive unit for a vehicle includes an electric machine and a manual gearbox with at least a first shift element, a second shift element, a third shift element and two planetary gear sets coupled to one another and each having a sun shaft, a hollow gear shaft, and a web shaft. The second hollow gear shaft is connected rotationally fixed to the first web shaft. The first sun shaft is connected to a stationary component. In the respective actuated states, the first shift element locks the first planetary gear set to shift a first gear, the second shift element connects the first hollow gear shaft to the second web shaft to shift a second gear, and the third shift element connects the first hollow gear shaft to the second sun shaft to shift a third gear.

A planetary-type bottom-bracket transmission for a bicycle or a pedelec includes a pedal crank shaft, a transmission output shaft, further shafts, and a first transmission shift group and a second transmission shift group. The first transmission shift group and the second transmission shift group are coupled to each other for implementing a plurality of gear ratios. The first transmission shift group includes a two-step stepped planetary gear set that is assigned a first shifting element, a second shifting element and a fifth shifting element.

Planetary-type bottom-bracket transmission for a bicycle or a pedelec

A vehicle drive unit has an electric machine and a manual gearbox with first and second shift elements and two planetary gear sets coupled to one another. Each gear set has a sun shaft, a ring gear shaft, and a web shaft. The second sun shaft is drivable by the electric machine and is configured as an output of the shift gear. The second ring gear shaft is connected rotationally fixed to the first web shaft, and the first sun shaft is connected rotationally fixed to a stationary component. When actuated, the first shift element connects the first ring gear shaft to an element of the first planetary gear set and/or of the second planetary gear set. When actuated, the second shift element connects the first ring gear shaft rotationally fixed to the second sun shaft or the second web shaft in order to shift a second gear.

A hybrid transmission device () includes a first transmission input shaft (), a second transmission input shaft (), a superposition gear unit () arranged axially parallel to the first transmission input shaft () and to the second transmission input shaft () and configured for connecting an electric machine (). The superposition gear unit () includes a first planetary gear set (P) with a sun gear (P), a ring gear (P), and a planet carrier (P) with planet gears (P) rotatably arranged thereon. A gear reduction stage () includes a first spur gear pair (ST) and a second spur gear pair (ST) for connecting the superposition gear unit () to a differential (). At least a first shift element (A), a second shift element (B), and a third shift element (C) are configured for implementing an electrodynamic driving-off process and a purely electric or hybridized drive of the motor vehicle.

Hybrid transmission device and motor vehicle comprising a hybrid transmission device

A bottom bracket gear mechanism for a bicycle or a pedelec includes a gear mechanism shifting group in which a second element of the first gear set is connected to a first shaft, a third element of the first gear set is connected via a fourth shaft to a second element of the second gear set, and a first element of the first gear set is connected to a fifth shaft. A first element of the second gear set is fixable via a third shaft and the second shifting element. The third shaft is connectable to the fifth shaft via the sixth shifting element. The third element of the second gear set is fixable via a second shaft and via the first shifting element. The second shaft is connectable to the first shaft via the fifth shifting element.

Bottom bracket gear mechanism of planetary design for a bicycle or a pedelec

A bottom bracket planetary gear mechanism for a bicycle or a pedelec includes a gear mechanism shifting group having first and second planetary gear sets and first, second, and fifth shifting elements. A second element of the first gear set is connected to a first shaft, a first element of the first gear set is connected via a fourth shaft to a first element of the second gear set, and a third element of the first gear set is fixable via a second shaft and a first shifting element. The third element of the first gear set is connected via the second shaft to a second element of the second gear set. A third element of the second gear set is fixable via a third shaft and a second shifting element. A fifth shifting element blocks the first and second gear sets.

The disclosure relates to a hybrid transmission device for an internal combustion engine transmission arrangement of a motor vehicle. The hybrid transmission device comprises at least one transmission input shaft, at least one drive device and at least one connecting clutch for connecting two shafts for conjoint rotation. The hybrid transmission device comprises no more than two gear stages. The disclosure additionally relates to a motor vehicle.

Hybrid transmission device, engine transmission arrangement, hybrid drivetrain and motor vehicle

A motor vehicle transmission () has a drive input shaft (), a drive output shaft () and a first planetary gearset (P), and a second planetary gearset (P), where the drive input shaft () is provided for coupling to a drive machine. In addition, a first shifting element (A) and a second shifting element (B) are provided, at least functionally. Also disclosed are a drive unit (), a motor vehicle drivetrain, a hybrid or electric vehicle, and a method for operating a motor vehicle transmission.

A motor vehicle transmission () has a drive input shaft (), a drive output shaft (), a first planetary gearset (P), and a second planetary gearset (P). The drive input shaft () is provided for coupling to a drive machine. In addition, a first shifting element (A) and a second shifting element (B) are provided, at least functionally. Also disclosed is a drive unit (), a motor vehicle drivetrain, a hybrid or electric vehicle, and a method for operating a motor vehicle transmission.

A gear unit for a powertrain and a powertrain including a stepped planetary gearset, a first gear shifting element and a second gear shifting element. The stepped planetary gearset has a first sun gear, a first ring gear, a second ring gear, and stepped planet gears rotatably mounted at a first planet carrier. The first ring gear is fixed with respect to rotation to an output shaft of the gear unit. The second ring gear is fixed with respect to rotation to a housing. The first gear shifting element drivingly connects the first sun gear to an electric machine in a closed state, and the second gear shifting element drivingly connects the first planet carrier to the electric machine in a closed state, and one of the two gear shifting elements is in the closed state for driving the output shaft in rotation.

Growing community of inventors

Weissensberg, Germany

Thomas Martin