Volkswagen Ag

Nsk Corporation

Rainer Petersen

Eiji Inoue

Hiroki Nishii

Jörg Möckel

Andreas Lutz

Robert Plikat

Hendrik Schröder

Peter Tenberge

Panagiotis Adamis

Stefan Hanke

Armin Sue

Christian Meissner

Henning Strauss

Henning Strauβ

Christian Meiβner

Christian Meißner

Jörg MÖCKEL

Lars Hoffmann

The invention relates to a shifting device for the selection of rotationally fixed non-rotational couplings of a plurality of coaxial shafts of a motor-vehicle transmission, comprising a displacement sleeve, which can be axially displaced in relation to a housing and which has internal teeth having two axial toothed sections spaced apart from each other by an axial gap, and which coaxially surrounds a plurality of toothed elements that are arranged axially adjacent to each other and that are each non-rotationally connected to one of the shafts and that each have external teeth corresponding to the internal teeth of the displacement sleeve, wherein the displacement sleeve has a first sleeve part and a second sleeve part that are connected to each other in a manner that is axially fixed and rotationally decoupled, wherein the first sleeve part is a carrier of the first axial toothed section and the second sleeve part is a carrier of the second axial toothed section.

Shifting device and drive unit for a motor vehicle

Traction transmission having a first and a second component transmission () which are of mirror-symmetrical construction with respect to one another and are arranged axially adjacently in a housing (), in each case comprising&#x2014;an axially inner drive friction disc () and an axially outer complementary friction disc () which are arranged coaxially and can be rotated relative to one another about a transmission central axis, and&#x2014;a set of friction rollers () which make non-positive contact between the friction discs () and are mounted such that they can be rotated about in each case one roller axle (), wherein the roller axles () are pivotably mounted in a manner which is spaced apart radially from the transmission central axis on a star-shaped spider () which can be moved ax Lilly in relation to the transmission central axis, wherein the spiders () are arranged on a common spider sleeve () and are coupled to one another at a variable spacing via an axially extending thread pairing (), wherein&#x2014;the complementary friction discs () are arranged fixedly on a common output shaft () which is mounted in the housing such that it is fixed axially and can be rotated, &#x2014;the spacing of the drive friction discs () from one another can be varied by means of a spacing setting device (), and&#x2014;the spider sleeve () is mounted such that it can be displaced axially relative to the housing (), wherein the first spider () which is assigned to the first component transmission () is connected fixedly to the housing () so as to rotate with it, the second spider () which is assigned to the second component transmission () can be rotated relative to the housing () by means of an angular position setting device (), and the thread pairing () which couples the spiders () is set up in such a way that a relative rotation of the spiders () brings about a change in the spacing thereof.

Traction transmission and drive unit for a motor vehicle

An electric drive includes a motor assembly, an output assembly, a transmission stage and one or more power electronics units connected to one or more electric voltage sources in order to control electrical sub-phases of electric machines of the motor assembly. The electric machines have motor shafts disposed parallel to one another. The transmission stage is connected to the motor assembly and also connected to the output assembly. The transmission stage has a transmission sun connected to the output assembly and has a plurality of transmission planets each connected to a respective one of the electric machines. The transmission planets are each fixed on a respective one of the motor shafts and are disposed in an annular manner around the transmission sun and roll on the transmission sun in a torque-transmitting manner. A method for operating an electric drive and a serial hybrid drive train are also provided.

Electric drive, method for the operation thereof, and serial hybrid drive train for a motor vehicle

A speed-changing and differential transmission includes a speed-changing section and a differential section. The speed-changing section has an input stage and a load stage. The sun wheel of the load stage can be operatively connected to at least one planet wheel of the input stage via a planet carrier. At least one planet wheel of the load stage can be operatively connected to the annulus of the input stage via a planet carrier. One of these operative connections is configured as a selectable connection and the other is configured as a fixed connection such that through use of a coupling device, the annulus of the input stage can be operatively coupled to the planet carrier of the load stage, or the sun wheel of the load stage can be operatively coupled to the planet carrier of the input stage.

Speed-changing and differential transmission and motor and transmission unit

A transmission and differential gearing with a housing, with an input shaft and two output shafts arranged coaxially with respect to the input shaft, wherein a transmission section and a differential section are provided, wherein the transmission section has two planet stages, namely an input stage and a load stage, wherein the sun wheel of the input stage is actively connected to the input shaft, wherein the load stage has a ring gear fixed to the housing, and the sun wheel of the load stage can be or is actively connected via a web to at least one planet wheel of the input stage, and wherein at least one planet wheel of the load stage is actively connected via a web to an input shaft of the differential section. The requirement for construction space is reduced and the use flexibility increased by the fact that the ring gear of the input stage can be coupled actively and for conjoint rotation to, or can be decoupled from, a planet carrier of the planet wheel of the input stage or to, or from, a planet carrier of the planet wheel of the load stage via a correspondingly provided and/or arranged coupling device.

Transmission and differential gearing and engine and gearing unit

An electric drive includes a motor configuration with a plurality of electric machines, an output configuration, and a transmission stage. The output configuration has a summing stage configured as a Ravigneaux set with a summing internal gear, a summing spider, two sets of summing planets, and two summing suns. The transmission stage has a transmission sun, transmission planets, and a rotatably mounted transmission internal gear. The transmission sun is connected to the output configuration. The transmission planets are each connected to a respective one of the electric machines. The transmission planets roll on the transmission sun and on the transmission internal gear in a torque-transmitting manner. The transmission internal gear is fixedly connected to one of the two summing suns. The transmission sun is fixedly connected to another one of the two summing suns. A drive configuration for a motor vehicle is also provided.

Electric drive and drive configuration for a motor vehicle

A friction roller planetary gearing includes a first and a second sun which are axially displaceable with respect to one another and at least one of the suns is connected for conjoint rotation to a sun shaft. Stepped planets roll on the suns, on a first annulus and on a second annulus. The suns, the annuluses and the stepped planets are configured as friction rings. The second annulus is axially displaceable relative to the first annulus. A first torque-dependent axial displacement device controls a contact pressure between the suns and contact surfaces of the planets by using a torque-dependent axial displacement of at least one of the suns. A second torque-dependent axial displacement device controls a contact pressure between the annuluses and contact surfaces of the planets by using a torque-dependent axial displacement of at least one of the annuluses.

Friction roller planetary gearing and speed-changing and differential gearing

A transmission arrangement for a hybrid vehicle includes an electric machine having a stator and a rotor. An electric-motor input shaft is connected to the rotor. A Ravigneaux gear set has a carrier, a set of long planets, a set of short planets, a ring gear, a first sun, and a second sun. The short planets mesh with the long planets. The ring gear meshes with the short planets and is connected to an output shaft. The first sun meshes with the short planets and is connected to the electric-motor input shaft. The second sun meshes with the long planets. The carrier is fixable on a transmission housing by a brake. The carrier, the second sun and an internal-combustion-engine input shaft are selectively couplable to one another in a torque-transmitting manner by a shiftable clutch arrangement. A hybrid vehicle and a drive train for a hybrid vehicle are also provided.

Transmission arrangement and drive train for a hybrid vehicle, and hybrid vehicle

A transmission and differential gearing includes a transmission section and a differential section. The transmission section has an input stage and a load stage. The sun gear of the input stage is connected or coupleable to an input shaft. The ring gear of the bad stage is fixed relative to the housing. The sun gear of the bad stage is connected to the carrier of the input stage. The carrier of the load stage is connected to the ring gear of the input stage. The differential section is a spur gear differential configured as a planetary gear set. The ring gear of the planetary gear set is connected to the carrier of the load stage. The carrier of the planetary gear set and the sun gear of the planetary gear set are connected to a respective one of two output shafts. A motor and gearing unit is also provided.

Growing community of inventors

Wolfsburg, Germany

Rainer Petersen