Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, two external 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. Each of the external gear sets includes first and second gears. The torque transmitting devices include clutches and brakes.

Abstract: A planetary gear mechanism for a bicycle, and more particularly to a planetary gear mechanism comprising a first planetary mechanism connected coaxially in series to a second planetary mechanism, which second planetary mechanism is connected coaxially in series to a third planetary mechanism, the second planetary mechanism output is a step up in speed from the first planetary mechanism output, the third planetary mechanism output is a step up in speed from the second planetary mechanism output.

Abstract: A transmission of the present invention has 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 brakes. The torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality of forward speed ratios and at least one reverse speed ratio.

Abstract: A proposition is to provide a power transmission mechanism for parallel hybrid vehicle that is capable of smoothly combining/separating input/output powers of a motor and an engine, and is applicable to a large hybrid vehicle by ensuring sufficient strength of a mechanism for combining and separating the input/output powers.

Abstract: A transmission is provided having an input member, an output member, three 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 include clutches and brakes.

Abstract: A transmission is provided having an input member, an output member, three 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 include clutches and brakes.

Abstract: A transmission of the present invention has an input member, an output member, two planetary gear sets, a planetary gear set assembly, 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 planetary gear set assembly includes first, second, third and fourth members The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least three to establish at least ten forward speed ratios and at least one reverse speed ratio.

Abstract: A gearbox has a first rotative component and a second rotative component, the gearbox having a rotary input and a rotary output, a first brake for braking the first rotative component of the gearbox against rotation thereof, and a second brake for braking the second rotative component of the gearbox against rotation thereof. The rotary input drives the rotary output if the first brake brakes the first rotative component of the gearbox and the rotary output drives the first rotative component of the gearbox if the second brake brakes the second rotative component of the gearbox.

Abstract: The present invention provides a dual power driving system with epicycle gear sets transmitted in series, in which the input shaft, the output shaft and the controllable brake device of each epicycle gear set can be coaxially connected in series, or connected in parallel or not in parallel; the rotating shaft at the output end and the rotating shaft at the input end of each epicycle gear set can be directly connected, or an intermediate transmission device can be installed for connection, and through operating the controllable brake devices, the selections for the structural configurations of the dual power driving system are provided.

Abstract: Disclosed herein is a gear train of a multi-step transmission for a vehicle, which can shift gears among nine forward speeds and one reverse speed. The gear train realizes a desired level of multi-step change gear ratios and has a reduced number of sets of planetary gears to reduce the volume and length of the transmission, thus realizing a compact structure, thereby facilitating the installation of the transmission in the vehicle.

Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, two external gear sets or sprocket 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. Each of the external gear sets includes first and second members. The torque transmitting devices include clutches and brakes.

Abstract: A transmission of the present invention has 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 brakes. The torque transmitting devices are selectively engageable in combinations of at least three to establish at least nine forward speed ratios and at least one reverse speed ratio.

Abstract: The invention relates to a powertrain for a hybrid electrical vehicle, comprising an engine, a first motor, a second motor and a transmission device, said transmission device having a planet gear set with double planet gear ranks comprising a first planet gear rank and a second planet gear rank, said engine is arranged on one side of said planet gear set, said first motor and said second motor are arranged on the other side of the planet gear set, said first planet gear rank comprises a small sun gear, a planet carrier, a short planet gear and an outer ring gear, said second planet gear rank comprises a big sun gear, a long planet gear and the planet carrier shared with the first planet gear rank, said long planet gear meshes with the short planet gear and the big sun gear respectively.

Abstract: An internally geared hub is provided with a hub axle, a hub shell, a driver, a planetary gear mechanism and a gear changing mechanism. The hub shell rotates freely about the hub axle. The driver rotates freely relative to both the hub axle and the hub shell. The planetary gear mechanism is operatively connected between the hub shell and the driver. The planetary gear mechanism includes a plurality of driver rotation transmission paths that transmits rotation of the driver in a prescribed operating direction to the hub shell, and a hub shell rotation transmission path that transmits rotation of the hub shell in the prescribed operating direction to the driver. The gear changing mechanism is operatively connected the planetary gear mechanism for selectively establishing one of the driver rotation transmission paths or the hub shell rotation transmission path.

Abstract: A transmission has an input member, an output member, two planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. One of the planetary gear sets includes a first, second, third and fourth member and the other of the planetary gear sets includes a first, second and third member. The torque transmitting devices include clutches and brakes.

Abstract: A motor vehicle with insertable four-wheel drive, including an engine having a crankshaft, a pair of main driving wheels constantly connected to the crankshaft by interposition of a gearbox provided with a first clutch, and a pair of secondary driving wheels, which may be connected to the crankshaft by an insertable transmission system. The insertable transmission system presents a second clutch, which is connected on one end with a fixed transmission ratio to the crankshaft upstream of the gearbox and on the other end with a fixed transmission ratio to the secondary driving wheels. A percentage of motive torque to be transmitted to the secondary driving wheels by the second clutch is determined according to dynamic parameters of the motor vehicle detected by respective sensors.

Abstract: The invention concerns a multiple ratio transmission device with permanent meshing, in particular for making a gearbox capable of providing gear shifts without interrupting the power transmission, for example an automatic control or sequential control gearbox. Said device comprises three coaxial planetary trains using selective coupling means so that each provides local direct drive or at least one transmission ratio. According to the invention, said device comprises two coaxial planetary trains (TP1, TP2) belonging to two different power paths (8a and 8b) between an upstream rotary member and a downstream rotary member. Said device comprises two gear-type transfer elements (TR1, TR2) of different ratios, interposed between one of the rotary members and one of said planetary trains (TP1, TP2).

Abstract: An automatic transmission including a Ravigneaux planetary gear unit, an input member, an output member disposed on one side of the Ravigneaux planetary gear unit, five friction elements disposed on the other side of the Ravigneaux planetary gear unit, and a partition member cooperating with an automatic transmission case to define a transmission chamber in which the output member, the Ravigneaux planetary gear unit, and the respective friction elements are accommodated. The output member is supported on a cylindrical portion extending from the partition member toward the Ravigneaux planetary gear unit in an axial direction of the input member.

Abstract: An automatic transmission includes: a Ravigneaux planetary gear set; first to fifth friction engagement elements; the first friction engagement element, the second friction engagement element, and the fifth friction engagement element being disposed on a front side which is nearer to the driving source than the output member, the third friction engagement element and the fourth friction engagement element being disposed on a rear side which is farther from the driving source than the output member, and a first drum member that includes an inner circumference on which the second friction engagement element is disposed, and an outer circumference on which the fifth friction engagement element is disposed, and that is connected with a front carrier plate located at a front end portion of the common carrier.

Abstract: A power transmission system includes an input shaft, a first planetary gear set having first, second, and third rotation elements, wherein the first rotation element is connected to a first motor/generator and the third rotation element is connected to the input shaft, a second planetary gear set having fourth, fifth, and sixth rotation elements, wherein the fourth rotation element is connected to the second rotation element and a second motor/generator, and the fifth rotation element engagable with the first rotation element, an output gear connected to the sixth rotation element, a first clutch selectively connecting the first rotation element with the fifth rotation element, a second clutch selectively connecting two rotation elements among the rotation elements of the first planetary gear set, a first brake interposed between the fifth rotation element and a transmission housing, and a second brake interposed between the fourth rotation element and the transmission housing.

Abstract: A gear train of an automatic transmission includes eight forward speeds and two reverse speeds to improve power delivery performance and to reduce fuel consumption, by controlling two simple planetary gear sets and one compound planetary gear set through four clutches and two brakes.

Abstract: A transmission is connectable to an input member and includes first and second shaft members, first and second countershaft members, a plurality of co-planar gear sets, a compound planetary gear set, a plurality of torque transmitting elements, and an output member. The torque transmitting devices include a plurality of brakes, synchronizer assemblies, and clutches including a dual clutch assembly. The transmission is operable to provide at least three reverse speed ratios and at least nine forward speed ratios between the input member and the output member.

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 brakes.

Abstract: A transmission is provided having an input member, an output member, three 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 include clutches and brakes.

Abstract: A transmission is provided having an input member, an output member, three 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 include clutches and brakes.

Abstract: A multi step transmission, of a planetary design, which has an external housing and includes a transmission input shaft and a transmission output shaft. First, second, third and fourth planetary gear sets are each accommodated within the transmission housing along with third, fourth, fifth, sixth, seventh and eighth shafts, and at least six shift elements. The at least six shift elements comprises first and second brakes and first, second, third and fourth clutches, whose selected engagement produces different transmission ratios between the drive shaft and the output shaft such that nine separate forward gears and one reverse gear can be achieved. For each of the forward and reverse gears, only three of the six shift elements are engaged.

Abstract: A vehicle hybrid driving apparatus that has an engine and an electric motor as drive power sources includes: a hydraulic pressure generation mechanism that generates hydraulic pressure using drive force from the engine; and a planetary gear ratio shift device that has three rotating elements: a first rotating element, a second rotating element, and a third rotating element. The first rotating element is linked to the electric motor so that power transmission therebetween is possible, and is also linked to the engine via a clutch so that power transmission therebetween is possible. The second rotating element is selectively linked to a stationary member via a brake. The third rotating element is linked to an output shaft so that power transmission therebetween is possible. The brake connects the second rotating element and the stationary member when the hydraulic pressure from the hydraulic pressure generation mechanism is not supplied.

Abstract: A multi step transmission comprising a drive shaft, an output shaft, four planetary gear sets each having a sun gear, a carrier and a ring gear, third, four, fifth, six, seventh and eighth rotatable shafts and at least six shift elements for selectively engaging different transmission ratios between the drive shaft and the output shaft such that nine forward gears and one reverse gear can be implemented. For each one of the nine forward gears and one reverse gear only three of the at least six shift elements are engaged. The sixth shaft is operatively connectable to the sun gear of the third platentary gear set via either a direct connection or a releasable connection.

Abstract: A multi step transmission comprises planetary gearsets (P1, P2, P3, P4), shafts, and shift elements. The sun gear of gearset (P1) couples shaft (4) which couples housing (G) via brake (04), the carrier of gearset (P1) couples shaft (3) which couples housing (G) via brake (03), the drive shaft via clutch (13), and shaft (5) via clutch (35). Shaft (5) couples the ring gear of gearset (P2) and the sun gear of gearset (P4). Shaft (1) couples the sun gear of gearset (P2) and operatively couples the carrier of gearset (P3). Shaft (6) couples the ring gear and carrier of gearsets (P1, P2) respectively, and operatively couples the sun gear of gearset (P3). The ring gear of gearset (P4) couples housing (G) and output shaft (2) couples the ring gear of gearset (P3), and detachably couples, via clutch (28), shaft (8) which couples the carrier of gearset (P4).

Abstract: A multi step transmission comprising gear sets, shafts and shift elements. The sun gear of set (P1) couples drive shaft (1). The carrier of set (P1) couples shaft (3) which couples, via brake (03), housing (G). Shaft (3) couples shaft (1), via clutch (13), and shaft (5) via clutch (35). Shaft (5) couples the ring and sun gears of sets (P2, P4) respectively, and shaft (8), which couples the sun gear of set (P3), via clutch (58). Shaft (1) couples shaft (7) which couples, via clutch (17), the carrier of set (P4). Shaft (6) couples the ring gear of set (P1) and the carrier of set (P2). The sun gear of set (P2) couples shaft (4) which couples, via brake (04), housing (G). The ring gear of set (P3) couples housing (G). Output shaft (2) couples the ring gear and carrier of sets (P4, P3) respectively.

Abstract: A multi step transmission, of a planetary design, which has an external housing and includes a transmission input shaft and a transmission output shaft. First, second, third and fourth planetary gear sets are each accommodated within the transmission housing along with third, fourth, fifth, sixth, seventh and eighth shafts, and at least six shift elements. The at least six shift elements comprises first and second brakes and first, second, third and fourth clutches, whose selected engagement produces different transmission ratios between the drive shaft and the output shaft such that nine separate forward gears and one reverse gear can be achieved. For each of the forward and reverse gears, only three of the six shift elements are engaged.

Abstract: An automatic 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 be either clutches or brakes. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.

Abstract: A transmission is provided having an input member, an output member, three 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 include clutches and brakes. The torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.

Abstract: A multi step transmission, of a planetary design, which has an external housing and includes a transmission input shaft and a transmission output shaft. First, second, third and fourth planetary gear sets are each accommodated within the transmission housing along with third, fourth, fifth, sixth, seventh and eighth shafts, and at least six shift elements. The at least six shift elements comprises first and second brakes and first, second, third and fourth clutches, whose selected engagement produces different transmission ratios between the drive shaft and the output shaft such that nine separate forward gears and one reverse gear can be achieved. For each of the forward and reverse gears, only three of the six shift elements are engaged.

Abstract: A multi-step transmission including four gear sets, shafts, and shifting elements. The sun gear of gearset (P4) couples shaft (3) which communicates, via brake (03), with the housing. The carrier of gearset (P4) couples the output shaft, which couples the ring gear of gearset (P2). The ring gear of gearset (P4) couples shaft (7), which couples the carrier of gearset (P2) and, via clutch (17), communicates with the drive shaft, which communicates, via clutch (18), with the ring gear of gearset (P1) coupled to shaft (8), and, via clutch (15), communicates with shaft (5). Shaft (5) couples the sun gear of gearset (P3), and, via brake (05), communicates with the housing. The carrier of gearset (P1) couples the shaft (6), the ring gear of gearset (P3) and the sun gear of gearset (P2). The carrier of gearset (P3) couples the shaft (4), which, via brake (4), communicates with the housing.

Abstract: A transmission includes an input and an output, a first power path including first and second clutches, a second power path including a third clutch, a third power path including a fourth clutch, a planetary gear unit including first, second, third and fourth members, the first clutch coupling the first member to the input through the first power path, the second member secured to the output, the second clutch coupling the fourth member to the input through the first power path, the third clutch coupling the fourth member to the input through the second power path, the fourth clutch coupling the third member to the input through the third power path, a first brake for holding the third member against rotation, and a second brake for holding the fourth member against rotation.

Abstract: A gear train of an automatic transmission for vehicles has the advantages of improving power delivery performance and reducing fuel consumption as a consequence of realizing more than eight forward speeds by combining four planetary gear sets with three clutches and three brakes.

Abstract: A transmission of the present invention has 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 brakes. The torque transmitting devices are selectively engageable in combinations of at least three to establish at least nine forward speed ratios and at least one reverse speed ratio.

Abstract: A transmission is provided having an input member, an output member, three 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 include clutches and brakes.

Abstract: A first element of a duplex planetary gear set is selectively coupled to an input shaft via a third clutch, or is selectively fixed via a first brake. A second element is selectively coupled, via a second clutch, to an intermediate shaft that is directly coupled to a speed-increasing element of a simplex planetary gear set which increases the rotational speed of the input shaft, or is selectively fixed via a second brake. A third element is directly coupled to an output shaft. A fourth element is selectively coupled to the input shaft via a first clutch. Therefore, by increasing the speed of the rotation of the input shaft by the simplex planetary gear set and transferring it to the duplex planetary gear set, it is possible to reduce the torques on individual components of an automatic transmission and therefore to reduce the sizes of the individual components and the capacities of the individual friction engagement elements.

Abstract: Various aspects of the present invention are directed to provide a gear train of an automatic transmission for vehicles having advantages of simplifying structures of the automatic transmission and improving power delivery performance and fuel economy as a consequence of realizing at least eight forward speeds and one reverse speed by combining two simple planetary gear sets and a double sun gear planetary gear set having two sun gears and a center member disposed between the sun gears and connected to a planet carrier with four clutches and two brakes.

Abstract: The multi-step transmission including four gear sets, eight shafts, and six shifting elements. The sun gear of gearset (P1) communicates, via shaft (8) and clutch (48), with shaft (4), which communicates, via clutch (14), with shaft (1), that couples the sun gear of the gearset (P4), and communicates, via brake (04), with a housing. The ring gear of gearset (P1) couples shaft (1), and communicates, via clutch (17), with shaft (7), which couples the carriers of the gearsets (P3, P2). The carrier of gearset (P1) is connected, via shaft (6), to a component, which connects the ring gear of gearset (P4) to the sun gear of gearset (P3). The carrier of gearset (P4) communicates, via shaft(3) and brake (03), with the housing. The sun gear of gearset (P2) communicates, via shaft (5) and brake (05), with the housing. The output shaft couples the ring gears of gearsets (P3, P2).

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

Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include five clutches and one brake arranged within a transmission housing.

Abstract: An eight speed transmission is provided having three planetary gear sets controlled by seven or optionally eight torque-transmitting mechanisms to provide eight forward speed ratios and a reverse speed ratio. The first planetary gear set is representable by a three-node first lever. The second and third planetary gear sets are interconnected such that they are representable by a four-node second lever.

Abstract: An automatic 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 be either clutches or brakes.

Abstract: A transmission is provided having an input member, an output member, three 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 include clutches and brakes.

Abstract: A transmission of the present invention has 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 brakes. The torque transmitting devices are selectively engageable in combinations of at least three to establish at least ten forward speed ratios and at least one reverse speed ratio.

Abstract: A transmission is provided having an input member, an output member, three 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 include clutches and brakes.

Abstract: A multiple speed transmission for an automotive vehicle includes an input and an output, a planetary gear system comprising first, second and third planetary gear units, each gear unit including a sun gear, a ring gear, planet pinions meshing with the sun gear and ring gear, and a carrier rotatably supporting the planet pinions. A forward clutch releasably connects the carrier of the second gear unit and the carrier of the third gear unit. A second clutch releasably connects the carrier of the first gear unit to the ring gear of the second gear unit. A third clutch releasably connects the ring gear of the third gear unit to the carrier of the second gear unit. First brake releasably holds the carrier of the third gear unit against rotation.