Zf Friedrichshafen Ag

Andreas Beisswenger

Peter Ziemer

Christian Sibla

Kai Bornträger

Raffael Kuberczyk

Christoph Margraf

Eckehard Münch

Stefan Brom

Johannes Glückler

Michael Trübenbach

Josef Haupt

Martin Brehmer

Thilo Schmidt

Alfred Skrabs

Ingo Tetzlaff

A transmission having planetary gearsets (RSRSRSRSRS). Elements (STST) of gearsets (RSRS) form input and output shafts, respectively. Element (SO) of gearset (RS) couples element (HO) of gearset (RS) and can be immobilized by shift element (A). Element (ST) of gearset (RS) couples element (HO) of gearset (RS). Element (HO) of gearset (RS) can be immobilized by shift element (B). Elements (SOST) of gearsets (RSRS) can connect by shift element (C). Elements (HOSOSO) of gearsets (RSRSRS) couple and can couple element (SO) of gearset (RS) by shift element (E). An element of gearset (RS) is connected to an element of gearset (RS), while another element of gearset (RS) can be connected by shift element (D) to another element of gearset (RS). Elements (SOST) of gearsets (RSRS) are connected and can be immobilized by shift element (F).

Automatic transmission

A multi-speed transmission has drive and output shafts, three front-mounted and two rear-mounted planetary gear sets, and shift elements which can be engaged to selectively implement at least eleven forward gears and one reverse gear. The front gear sets are connected to one element of the rear gear sets. Five shift elements are assigned to the front gear sets and two are assigned to the rear gear sets, such that the front gear sets transmit seven output speeds to the rear gear sets. If normalized to the input speed of the drive shaft, at least one output speed of the front gear sets is less than 0, one output speed is greater than 1, one output speed is equal to 0, one output speed is equal to 1 and two output speeds are between 0 and 1.

Multispeed transmission

A multi-speed transmission having drive and output shafts, front-mounted planetary gearsets, rear-mounted planetary gearsets and six shift elements. Selective engagement of shift elements selectively renders a drive shaft speed and speeds generated in the front gearsets for achieving a reverse gear and twelve forward gears via the rear gearsets transmissible as an output speed to the output shaft. Four shift elements are assigned to the front gearsets and two are assigned to the rear gearsets. At least one front gearset is rigidly connected to an element of the rear gearsets, resulting in six different output speeds of the front gearsets being transmissible to the rear gearsets. If normalized to the drive shaft input speed, one output speed is smaller than 0, three output speeds are between 0 and 1, one output speed is equal to 1 and one output speed is greater than 1.

A multi-speed transmission having drive and output shafts, three front-mounted and two rear-mounted planetary gearsets, six shift elements which are selectively engaged to render a speed of the drive shaft and speeds generated in the front gearsets to achieve at least one reverse and twelve forward gears via at least one of the rear gearsets transmissible as the output shaft speed. Four shift elements are assigned to the front gearsets and two shift elements are assigned to the rear gearsets. At least one of the front gearsets is fixed to an element of the rear gearsets, resulting in six different output speeds of the front gearsets being transmissible to at least one of the rear gearsets. If normalized to the input speed of the drive shaft, one of the six output speeds is less than 0, four are between 0 and 1, and one is equal to 1.

A transmission having five planetary gearsets and seven shift elements for achieving various ratios between drive and output shafts. A forward gearset has three shafts. Two intermediate gearsets have four shafts. Two main gearsets have at least four shafts. Depending on the shift states of the second and third shift elements, the forward gearset can generate two rotational speeds at the output side, which transfer from a forward gearset shaft to an intermediate gearset shaft. Depending on the shift states of the first to fifth shift elements, the intermediate gearset can generate eight rotational speeds at the output side, which pass from another intermediate gearset shaft to a main gearset shaft. Depending on the shift states of the seven shift elements, the main gearset can generate up to fourteen forward and two reverse gears at the output side, which are transferred by another main gearset shaft to the output shaft.

Planetary automatic transmission

A transmission includes a main gear set, an auxiliary gear set and an electric motor with a rotor and a stator. A third shaft of the main gear set is connected to the transmission output shaft, and a first shaft of the auxiliary gear set is connected to the rotor. A second shaft of the auxiliary gear set is constantly connected to a first shaft of the main gear set. A third shaft of the auxiliary gear set is constantly connected to a second shaft of the main gear set, the third shaft of the main gear set or a fourth shaft of the main gear set.

Transmission, hybrid drive train, and drive train for an electric vehicle

A transmission includes a main gear set, an auxiliary gear set and an electric motor with a rotor and a stator. A third shaft of the main gear set is connected to a transmission output shaft, and a first shaft of the auxiliary gear set is connected to the rotor. When a second shaft of the auxiliary gear set is connected to a first shaft of the main gear set, a third shaft of the auxiliary gear set is constantly connected to the third shaft of the main gear set or a fourth shaft of the main gear set. When the second shaft of the auxiliary gear set is connected to the third shaft of the main gear set, the third shaft of the auxiliary gear set is constantly connected to the fourth shaft of the main gear set.

Transmission, hybrid drivetrain and drivetrain for an electric vehicle

A device for actuating multiple shift elements of a transmission device is described. Each of the pistons for a change in operating state of the shift elements in the area of active surfaces can be subjected to a fluid pressure acting in a first or second actuating direction. The fluid pressure actively applied in the first actuating direction can be separately adjusted for each of the shift elements, while the fluid pressure actively applied in the second actuating direction is essentially the same for all shift elements. The pistons are arranged coaxially to each other, radially into each other, and in a manner axially displaceable in sections in one intermediate plate. The intermediate plate features areas for applying the fluid pressures acting in the first actuating direction. The area through which the fluid pressure acting in the second actuating direction can be guided to the pistons is limited.

Device to actuate shifting elements of a transmission

A transmission includes a main gear set, an auxiliary gear set and an electric motor with a rotor and a stator. A third shaft of the main gear set is connected to a transmission output shaft. A second shaft of the auxiliary gear set is connectable through a first auxiliary shift element to a first shaft of the main gear set and through a second auxiliary shift element to the third shaft of the main gear set or to a fourth shaft of the main gear set. A third shaft of the auxiliary gear set is constantly connected to a second shaft of the main gear set. A first shaft of the auxiliary gear set is constantly connected to the rotor.

A transmission includes a main gear set, an auxiliary gear set and an electric motor with a rotor and a stator. A third shaft of the main gear set is connected to the transmission output shaft, and a first shaft of the auxiliary gear set is connected to the rotor. When a second shaft of the main gear set is constantly connected to a second shaft of the auxiliary gear set, the third shaft of the main gear set or a fourth shaft of the main gear set is constantly connected to the third shaft of the auxiliary gear set. When the third shaft of the main gear set is constantly connected to the second shaft of the auxiliary gear set, the fourth shaft of the main gear set is constantly connected to the third shaft of the auxiliary gear set.

A transmission includes a main gear set, an auxiliary gear set and an electric motor with a rotor and a stator. A third shaft of the main gear set is connected to a transmission output shaft. A first shaft of the auxiliary gear set is constantly connected to the rotor. A second shaft of the auxiliary gear set is connectable through a first auxiliary shift element to a first shaft of the main gear set or a second shaft of the main gear set and through a second auxiliary shift element to a fourth shaft of the main gear set. A third shaft of the auxiliary gear set is constantly connected to the third shaft of the main gear set.

A planetary gear set has a sun gear, multiple planetary gears mounted on a planetary carrier, and a ring gear enclosing the planetary gears, which is designed in split form perpendicular to its axis of rotation and is formed from two ring gear parts arranged coaxially to each other. An adapter component that, for the purpose of a torque-transferring or torque-supporting operative connection of the planetary carrier, is connected in a torque-proof manner to an additional component in a mounted state with the planetary carrier, and is guided, viewed radially, outward by the ring gear parts.

Planetary gearset

The invention concerns an apparatus for torque transmission and axial securing of a first ( ) and a second ( ) torque conducting component. The apparatus has the form of a ring shaped component ( ), which possesses along its circumference projections ( ) which are spaced from one another and which are insertable in such a manner in the spaces between projections ( ) of the second component ( ) which lies on a surface ( ) of the first component ( ), that the sides of the projections ( ) which face the surface ( ) of the first component ( ) can be affixed to the first component ( ).

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Aulendorf, Germany

Andreas Beisswenger