Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first and second differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, four or five selectable torque transmitting devices, and possibly a dog clutch. The selectable torque transmitting devices are engaged to yield an EVT with a continuously variable range of speeds (including reverse) and at least one mechanically fixed forward speed ratio. The torque transmitting devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: A transmission having input and output shafts, planetary gearsets (RS1, RS2, RS3, RS4), and additional shafts and shifting elements. A ring gear of set (RS4) and the input shaft define shaft (1). A carrier of (RS3) and the output define shaft (2). The sun gears of (RS1, RS4) define shaft (3). A ring gear of (RS1) forms shaft (4). A ring gear of (RS2) and a sun gear of (RS3) define shaft (5). A carrier of (RS1) and a ring gear of (RS3) form shaft (6). A sun gear of (RS2) and a carrier of (RS4) define shaft (7). A carrier of (RS2) forms shaft (8). A first element (A) couples shaft (3) to the transmission housing. A second element (B) couples shaft (4) to the housing. A third element (C) couples shafts (1, 5) to one another. A fourth element (D) couples shafts (2, 8) or (6, 8) to one another. A fifth element (E) couples shafts (5, 7), (7, 8) or (5, 8) to one another.

Abstract: A multi-speed automatic planetary transmission for a motor vehicle having an input shaft (AN), an output shaft (AB), four planetary gearsets (RS1, RS2, RS3, RS4), at least eight rotatable shafts (1, 2, 3, 4, 5, 6, 7, 8), and five shifting elements (A, B, C, D, E), the selective engagement of which produces different transmission ratios between the input shaft (AN) and the output shaft (AB), such that eight forward gears and at least one reverse gear are possible. Further, it is possible to connect an electric machine (12) as generator and/or drive, to the fifth shaft (5) by means a drive connection.

Abstract: The 8-gear multi-step transmission comprises a drive input shaft (AN), a drive output shaft (AB), four planetary gearsets (RS1, RS2, RS3, RS4), eight rotary shafts (1, 2, 3, 4, 5, 6, 7, 8) and five shift elements (A, B, C, D, E). An internal gear (HO1) of the first planetary gearset (RS1) and the drive input shaft (AN) are connected to one another as the first shaft (1). A carrier (ST4) of the fourth gearset (RS4) and the drive output shaft (AB) are connected to one another as the second shaft (2). A sun gear (SO2) of the second gearset (RS2), and a sun gear (SO3) of the third gearset (RS3) are connected to one another as the third shaft (3). An internal gear (HO2) of the second gearset (RS2) forms the fourth shaft (4). An internal gear (HO3) of the third gearset (RS3) forms the fifth shaft (5). A carrier (ST2) of the second gearset (RS2) and an internal gear (HO4) of the fourth gearset (RS4) are connected to one another as the sixth shaft (6).

Abstract: A dual-clutch planetary transmission comprising a plurality of planetary gearsets, two frictionally engaged gearshifting element for connecting various power trains to a power flux and a plurality of form-fit gearshifting elements for adjusting various gear ratios in the power trains. The frictionally engaged gearshifting elements and the form-fit gearshifting elements are arranged between the shafts of the planetary gearsets, a housing and a transmission input shaft and a transmission output shaft so that the gear ratio can be changed in a lower gear ratio range, via the frictionally engaged gearshifting elements, without any interruption of tractive force. At least one of the frictionally engaged gearshifting elements is a clutch. The form-fit gearshifting element, the frictionally engaged gearshifting elements and the planetary gearsets are positioned within the housing and can be interlinked so that the form-fit gearshifting elements can be actuated without insertion through rotating parts.

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and at least one reverse speed ratio. The transmission includes four planetary gear sets having five torque-transmitting devices and five fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The five torque-transmitting devices provide interconnections between various gear members, and with a stationary member, and are operated in combinations of two to establish at least eight forward speed ratios and at least one reverse speed ratio.

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide at least seven forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets having six or seven torque-transmitting mechanisms and three fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six or seven torque-transmitting mechanisms provide interconnections between various gear members and with the transmission housing, and are operated in combinations of two to establish at least seven forward speed ratios and at least one reverse speed ratio.

Abstract: A multi-stage automatic transmission comprising a drive shaft (AN), a double planetary front mounted gear set (VS), a main gear set (HS) which is embodied as a coupled planetary gear set comprising at least three non-coupled input elements and an output element, in addition to six switch elements (A to F). Engagement of the six switch elements (A to F) takes place in pairs thereby enabling at least eight forward gears to be shifted. One element of the front mounted gear set (VS) is determined on a housing (GG). The second and the sixth shift element (B, F) form a component which is arranged on the side of the front mounted gear set (VS) which is oriented away from the main gear set (HS) and is arranged in an at least partially axial manner, between the front mounted gear set (VS) and a housing wall (GW), which is secured to the gear housing and which extends in a radial manner.

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide ten forward speed ratios and one reverse speed ratio. The transmission includes four planetary gear sets, six torque-transmitting devices, and four fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, and the transmission housing, and are operated in combinations of three to establish ten forward speed ratios and one reverse speed ratio.

Abstract: A gear train of an automatic transmission for a vehicle includes first and second shifting sections and a plurality of friction members, wherein: the first shifting section includes first and second simple planetary gear sets forming a first input path for directly receiving an input shaft rotation speed and an intermediate output path for outputting a reduced speed of the first shifting section; and the second shifting section includes third and fourth simple planetary gear sets forming a first intermediate input path for variably receiving an input shaft rotation speed, a second intermediate input path for receiving the reduced speed of the first shifting section through the intermediate output path and also for variably receiving an input shaft rotation speed, and a final output path for outputting a modified speed of the second shifting section.

Abstract: A powertrain is provided, comprising: an internal combustion engine and an electro-mechanical transmission. The internal combustion engine has two torque output nodes operatively connected to two torque input nodes of the electro-mechanical transmission. The transmission comprises first and second electrical machines operatively connected to first and second planetary gear sets that are selectively operative to transmit torque to an output shaft. The two torque output nodes of the engine comprise an engine block comprising a cylinder with a pair of opposed pistons inserted therein, and each piston operatively connected to one of a first and a second crankshaft. The first and second crankshafts are operatively connected.

Abstract: A multi-speed transmission is provided that includes three planetary gear sets and seven torque-transmitting mechanisms with various fixed interconnections to provide seven forward speed ratios and one reverse speed ratio. The first planetary gear set is a dual sun planetary and the torque-transmitting mechanism engagement schedule is designed so that, in the reverse speed ratio, a predetermined speed ratio is achieved at the second sun gear member in the dual sun planetary and the input member, and, in the first forward speed ratio, the same magnitude predetermined speed ratio is achieved between the second sun gear member and the input member, but with the second sun gear member rotating in an opposite direction as in the reverse speed ratio.

Abstract: A multi-speed transmission includes multiple planetary gear sets having members representable by a three-node lever and a five-node lever, with each node representing at least one of the members of the planetary gear sets. The transmission includes seven torque-transmitting mechanisms including three rotating clutches selectively connecting nodes of the three-node lever to nodes of the five-node lever, one rotating clutch selectively connecting the input member with a node of the five-node lever and three brakes grounding selective nodes of the five-node lever to a stationary member. The torque-transmitting mechanisms are engagable in different combinations to provide at least eight forward speed ratios and a reverse speed ratio between an input member and an output member, and there are preferably five alternate forward speed ratios such that there are five different combinations of nine forward speed ratios operable in progression with single-transition shifts between each forward speed ratio.

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and five selectable torque-transfer devices (two clutches and three brakes) and possibly a dog clutch. The selectable torque transfer devices are engaged singly or in combinations of two, three or four to yield an EVT with a continuously variable range of speeds (including reverse) and two mechanically fixed forward speed ratios. The torque transfer devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: An eight-gear gearbox comprises an input shaft, an output shaft, four planetary gear sets, eight rotatable shafts and five shifting elements.

Abstract: A power train of an automatic transmission has eight forward gear stages and three reverse gear stages. The power train includes two composite planetary gear sets and seven engagement elements: two clutches and five brakes. Two of the engagement elements are engaged in each gear stage.

Abstract: In an automatic transmission, a planetary gear set is disposed adjacently to an end cover and configured such that its inner peripheral face of a carrier is rotatably supported on an outer peripheral face of a boss portion provided at the end cover. A lubricating-oil supply passage comprises an oil passage formed from the end cover to the boss portion, an oil passage formed in the carrier so as to tightly connect to the oil passage at the inner face of the carrier, and an oil passage formed in the pinion shaft so as to tightly connect to the oil passage and reach an outer peripheral face of the pinion shaft. There is provided a lubricating oil supply means for supplying lubricating oil to the bearing portion via the above-descried lubricating-oil supply passage.

Abstract: A control apparatus for a vehicular drive system including a continuously-variable transmission portion, and a step-variable transmission portion, the continuously variable transmission portion having a differential mechanism operable to distribute an output of an engine to a first electric motor and a power transmitting member, and a second electric motor disposed in a power transmitting path between the power transmitting member and a drive wheel of a vehicle, the step-variable transmission portion constituting a part of the power transmitting path, the control apparatus includes a differential-state limiting device provided in the differential mechanism for limiting an operation of the continuously-variable transmission portion, and an electric-motor control device to control a drive-force assisting operation to drive the vehicle during a shifting action of the step-variable transmission portion, differently depending upon whether the continuously-variable transmission portion is placed in a continuously-v

Abstract: The multi-speed transmission has shafts, planetary gearsets (RS1, RS2, RS3, RS4) and shifting elements (A, B, C, D, E). Carrier (ST4) of gearset (RS4) and the input shaft couple as shaft (1). Carrier (ST3) of gearset (RS3) and the output shaft couple as shaft (2). Sun gears (SO1, SO4) of gearsets (RS1, RS4) couple as shaft (3). Ring gear (HO1) of gearset (RS1) forms shaft (4). Sun gear (SO3) forms shaft (5). Carrier (ST1) of gearset (RS1) and ring gear (HO3) of gearset (RS3) couple as shaft (6). Sun gear (SO2) of gearset (RS2) and carrier (ST4) of gearset (RS4) couple as shaft (7). Ring gear (HO2) is shaft (8). In the flow of power, elements (A, B) are respectively between shafts (3, 4) and a transmission housing; element (C) is between shafts (1, 5); element (D) is between shafts (2, 8); and element (E) is between shafts (5, 7).

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first and second differential gear sets, a battery, three electric machines serving interchangeably as motors or generators and up to three brakes. The three motor/generators are operable in a coordinated fashion to yield an EVT with a continuously variable range of speeds (including reverse). One of the brakes enables series hybrid operation.

Abstract: A transmission for distributing a drive torque between at least two drive output shafts with at least two planetary gearsets, each having at least three-shafts. In each case, a shaft of a planetary gearset is connected to a drive input shaft and a second respective shaft of a planetary gearsets is the drive output shafts. A respective third shaft of the planetary gearsets communicates with a brake such that a degree of distribution of the drive torque between the two output shafts varies as a function of the transfer capacities of the brakes. A transmission device controls and regulates a drive torque from a drive engine between the two output shafts of the transmission device. The transfer capacities of the two brakes are adjusted such that one brake is in a synchronous condition and the transfer capacity of the other brake is varied between a lower and an upper limiting value.

Abstract: A power transmission, for a vehicle, provides seven forward speeds and a reverse speed. The transmission has three planetary gearsets and has one sun gear member, which is held stationary for six of forward speeds and the reverse speed. The sun gear member is connected through a shaft to a torque-transmitting mechanism, which is disposed forward of an oil distribution snout and rearward of the vehicle engine.

Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and at least one brake.

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes four planetary gear sets having five torque-transmitting mechanisms, three fixed interconnections and a grounded member. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The five torque-transmitting mechanisms provide interconnections between various gear members, and the transmission housing, and are operated in combinations of three to establish at least eight forward speed ratios and at least one reverse speed ratio.

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and five selectable torque-transfer devices (two clutches and three brakes) and possibly a dog clutch. The selectable torque transfer devices are engaged singly or in combinations of two, three or four to yield an EVT with a continuously variable range of speeds (including reverse) and two mechanically fixed forward speed ratios. The torque transfer devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: A transmission can be provided which achieves multiple speeds while maintaining good balance of gear ratio steps between gears by having a first clutch which selectively connects a first intermediate output member and a fourth rotating element RE4 together, a second clutch which selectively connects an input shaft and a second rotating element RE2 together, a third clutch which selectively connects the first intermediate output member and a first rotating element RE1 together, a fourth clutch which selectively connects the input shaft and the first rotating element RE1 together, a fifth clutch which selectively connects a second intermediate output member and the first rotating element RE1 together, a first brake which selectively holds the first rotating element RE1 to a transmission case, and a second brake which selectively holds the second rotating element RE2 to the transmission case.

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, up to five selectable torque-transfer devices and possibly a dog clutch. The selectable torque transmitting devices are engaged to yield an EVT with a continuously variable range of speeds (including reverse) and up to four mechanically fixed forward speed ratios. The torque transmitting devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: Six forward speeds and one reverse speed may be realized with minimized length and weight of the transmission by employing two single pinion planetary gear sets and a double pinion planetary gear set. One planetary gear of the double pinion planetary gear set is interconnected with an adjacent second planetary gear of the second single pinion planetary gear set by a common planet carrier such that they may rotate independently, and at the same time, at least two ring gears are integrated so as to enhance strength in the axial direction.

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, up to five selectable torque-transfer devices and possibly a dog clutch. The selectable torque transmitting devices are engaged to yield an EVT with a continuously variable range of speeds (including reverse) and up to four mechanically fixed forward speed ratios. The torque transmitting devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, up to five selectable torque-transfer devices and possibly a dog clutch. The selectable torque transmitting devices are engaged to yield an EVT with a continuously variable range of speeds (including reverse) and up to four mechanically fixed forward speed ratios. The torque transmitting devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: A power train of an automatic transmission that realizes seven forward speeds and two reverse speeds includes a first planetary gear set a second planetary gear set; a third planetary gear set an input shaft; an output gear; and a transmission case. A third planet carrier is fixedly connected to a first ring gear, a second ring gear is fixedly connected to the a planet carrier, a long-pinion-side ring gear acts as an input element by being fixedly connected to the input shaft, and a second planet carrier acts as an output element by being fixedly connected to the output gear. Also, a second ring gear is variably connected to the input shaft via a first clutch, a first sun gear is variably connected to the first planet carrier via a second clutch, the second sun gear is variably connected to the first sun gear via a third clutch, and the short-pinion-side ring gear is variably connected to the transmission case via a first brake.

Abstract: A transmission includes planetary gearsets, shafts and shifting elements. A carrier of gearset (RS4) and the input shaft couple forming shaft (1). A carrier of gearset (RS3) and the output shaft couple forming shaft (2). A sun gear of gearsets (RS1, RS4) couple forming shaft (3). The carriers of gearsets (RS1, RS2) respectively form shafts (4, 8). A ring gear of gearset (RS2) and a sun gear of gearset (RS3) couple forming shaft (5). A ring gear of gearsets (RS1, RS3) couple forming shaft (6). A sun gear of gearset (RS2) and a ring gear of gearset (RS4) couple forming shaft (7). Element (A) is located in a direction of power flow between shaft (3) and the transmission housing, element (B) between shaft (4) and the housing, element (C) between shafts (1, 5), element (D) between shafts (2, 6) or (6, 8), element (E) between two of shafts (5, 7, 8).

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and up to five selectable torque-transfer devices, and possibly a dog clutch. The selectable torque transfer devices are engaged singly or combinations of two to yield an EVT with a continuously variable range of speeds (including reverse) and up to four mechanically fixed forward speed ratios. The torque transfer devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: An automatic transmission including a mechanical reduction gear connected to an input shaft that generates a decelerated rotation smaller than a rotation of the input shaft from a decelerated rotating member and a compound planetary gear for shifting with a first element, a second element, a third element, a fourth element, and a fifth element.

Abstract: A powertrain incorporates a multi-speed planetary transmission having four planetary gearsets and seven torque-transmitting mechanisms. The planetary gearsets are interconnected and controlled by the torque-transmitting mechanisms in combinations of two, such that eight forward speeds and three reverse speeds are developed between an input shaft and an output shaft of the transmission.

Abstract: A powertrain includes an engine with an engine output member and a transmission with two motor/generators and a transmission input member operatively connected to the engine output member. A control unit is configured to selectively cause a device to resist or prevent rotation of the input member in response to the existence of certain conditions, such as the engine not supplying torque to the transmission and the transmission being in reverse operating mode. Resisting or preventing rotation of the input member improves transmission performance when only the motor/generators are supplying torque to propel the vehicle. A corresponding method is also provided.

Abstract: An automatic transmission having a start-up clutch assembly includes a transmission housing, an input drive shaft, and an output drive shaft. An input planetary gear assembly is also included that has a sun gear and a ring gear, with a plurality of planet gears disposed therebetween, the ring gear operatively connected to the input drive shaft. A start-up clutch is operatively disposed between the transmission housing and the sun gear and is adapted to allow the sun gear to freely rotate when the start-up clutch is disengaged so that no torque is transferred. The start-up clutch is further adapted to engage and hold the sun gear stationary so that torque is fully transferred. The start-up clutch is further still adapted to provide a varying and controllable slipping interaction between the disengaged and engaged positions at vehicle start-up thereby providing the vehicle with a smooth transition from stationary to moving.

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first and second differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and five selectable torque-transfer devices (two clutches and three brakes). The selectable torque transfer devices are engaged singly or in combinations of two or three to yield an EVT with a continuously variable range of speeds (including reverse) and up to three mechanically fixed forward speed ratios. The torque transfer devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: A drive train (1, 30) for a hybrid vehicle, in which an internal combustion engine (2) is drive-technologically connected to a disengagement clutch (4) whose output side is connected to a transmission input shaft (7), which is connected to an input element (8, 38) of an automatic transmission (17, 36), and in which the transmission input shaft (7) can be driven by an electric machine (5) and itself drives a hydraulic pump (6), which is drive-technologically arranged after the disengagement clutch (4) and before a shiftable starting element (F) of the automatic transmission (17, 36).

Abstract: A multi-speed automatic transmission includes an input and output, first, second and three planetary gear units, each gear unit including a sun gear, a ring gear, planet pinions meshing with the sun gear and the ring gear, and a carrier rotatably supporting the planet pinions. A first brake alternately holds against rotation and releases the sun gear of the second gear unit and the sun gear of the third gear unit. A second brake alternately holds and releases the carrier of the second gear unit. A first clutch alternately connects and disconnects the carrier of the first gear unit and the ring gear of the third gear unit. A second clutch alternately disconnects and connects the carrier of the first gear unit to the sun gears of the second gear unit and third gear unit. A third clutch alternately releases and connects the input and ring gear of the first gear unit to the carrier of the second gear unit.

Abstract: A transmission is provided having four planetary gearsets, each having respective first, second, and third members, and a plurality of selectively engageable torque transmitting devices configured to selectively interconnect selected members of the four planetary gearsets for unitary rotation thereby to provide a plurality of forward speed ratios and at least one reverse speed ratio between an input member and an output member.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting mechanisms and three interconnecting members. The powertrain includes an engine that is selectively connectable to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The seven torque-transmitting mechanisms provide interconnections between various gear members, the input shaft and the transmission housing, and are operated in combinations of two to establish at least eight forward speed ratios and at least one reverse speed ratio.

Abstract: Eight-speed transmissions are provided that include four planetary gear sets having seven torque-transmitting mechanisms and various fixed interconnections to provide eight forward speed ratios and at least one reverse speed ratio. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another of the planetary gear members. The seven torque-transmitting mechanisms are operated in combinations of two. Reduced component speeds and improved ratios are achieved.

Abstract: A multi-stage transmission comprising two planetary gear sets (RS2, RS3) and one planetary reduction gear set (VS), one first clutch (A) and one second clutch (B), one third clutch (E) and one first brake (C), one second brake (D), the external disc carrier of the clutch (B) being connected with one output element of the planetary reduction gear set (VS), the internal disc carrier of the clutch (B) leads to the internal disc carrier of the brake (C) which is connected with one element of the planetary gear set (RS2), the internal disc carrier of the clutch (A) being connected with one output element of the planetary reduction gear set (VS) and the external disc carrier of the clutch (A) with one element of the planetary gear set (RS3), the external disc carrier of the clutch (E) being connected with one input element of the planetary reduction gear set (VS) and with the drive shaft (AN), the internal disc carrier of the clutch (E) being connected respectively with one element of the planetary gear set (RS2) a

Abstract: A multi-stage planetary gear train has an upper-side planetary set comprising a sun gear, a ring gear, an outer pinion meshed with the ring gear, an inner pinion meshed with the outer pinion and the sun gear, and a carrier rotatably supporting the pinions; and a lower-side planetary set comprising first, second, third and fourth members that are rotatable. The sun gear is connected with the input shaft, the first member is connected with the ring gear at first-forward speed, the second member is held to the transmission case by connection with the carrier at the first-forward speed and a reverse position and connected with the input shaft at forward speeds higher than 3rd speed, the third member is held to the transmission case by connection with the carrier at second-forward speed and connected with the ring gear at third-forward speed, the fourth member is connected with the output shaft.

Abstract: A drive axle assembly includes first and second axleshafts connected to a pair of wheels and a drive mechanism operable to selectively couple a driven input shaft to one or both of the axleshafts. The drive mechanism includes a differential assembly, a planetary gear assembly operably disposed between the differential assembly and the first axleshafts and first and second mode clutches. The first mode clutch is operable with the planetary gear assembly to increase the rotary speed of the first axleshaft which, in turn, causes a corresponding decrease in the rotary speed of the second axleshaft. The second mode clutch is operable with the planetary gear assembly to decrease the rotary speed of the first axleshaft so as to cause an increase in the rotary speed of the second axleshaft. A control system controls actuation of both mode clutches.

Abstract: A seven-speed transmission includes an input shaft, an output shaft, and a planetary gear arrangement having first, second, third and fourth planetary gear sets, each planetary gear set having first, second and third members. First and second interconnecting members continuously interconnect members of the planetary gear sets. Seven torque-transmitting mechanisms are engaged in combinations of three to establish seven forward speed ratios and a reverse speed ratio between the input shaft and the output shaft. The transmission is alternatively operable through two different sets of six speeds by engaging the sixth or seventh torque-transmitting mechanism before cycling the transmission through different speed ratios. In this manner, the transmission is operable as a dual six-speed transmission.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting mechanisms and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The seven torque-transmitting mechanisms provide interconnections between various gear members, and the transmission housing, and are operated in combinations of two to establish at least eight forward speed ratios and at least one reverse speed ratio.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide six forward speed ratios and a reverse speed ratio. The transmission family members include three planetary gear sets having five torque-transmitting mechanisms, two fixed interconnections, and one grounded planetary gear member. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The five torque-transmitting mechanisms provide interconnections between various gear members, the fixed interconnections, the input shaft, the output shaft, and the transmission housing, and are operated in combinations of two to establish six forward speed ratios and one reverse speed ratio.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting mechanisms and three fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The seven torque-transmitting mechanisms provide interconnections between various gear members and the transmission housing, and are operated in combinations of two to establish at least eight forward speed ratios and at least one reverse speed ratio.