Abstract: A planetary gear train of an automatic transmission for a vehicle includes input and output shafts, and first, second, third, fourth, and fifth planetary gear sets, each including three rotation elements. The planetary gear train also includes nine shafts for selectively connecting the planetary gear sets, the input and output shafts, and a transmission housing in various configurations to achieve at least ten forward speeds and at least one reverse speed.

Abstract: A planetary gear train may include input and output shafts, first to fifth planetary gear sets respectively having first to third, fourth to sixth, seventh to ninth, tenth to twelfth, and thirteenth to fifteenth elements, a first shaft fixedly connected to the first, eighth, and thirteenth elements and the input shaft, a second shaft fixedly connected to the fourteenth element and the output shaft, a third shaft fixedly connected to the fifth element, a fourth shaft fixedly connected to the sixth element, a fifth shaft fixedly connected to the ninth element, a sixth shaft fixedly connected to the eleventh and fifteenth elements, a seventh shaft fixedly connected to the second and fourth elements, an eighth shaft fixedly connected to the third, seventh, and tenth elements, and a ninth shaft fixedly connected to the twelfth element.

Abstract: A planetary gear train of an automatic transmission may include an input shaft receiving power, an output shaft outputting power, a first planetary gear set including first, second, and third rotation elements, a second planetary gear set including fourth, fifth and sixth rotation elements, a third planetary gear set including seventh, eighth and ninth rotation elements, a fourth planetary gear set including tenth, eleventh and twelfth rotation elements, a fifth planetary gear set including thirteenth, fourteenth and fifteenth rotation elements, and first to ninth shafts for connecting the rotation elements of the first to fifth planetary gear sets to each other.

Abstract: A planetary gear train of an automatic transmission may include an input shaft, a first planetary gear set including a first sun gear, a first planetary carrier, and a first ring gear, a second planetary gear set including a second sun gear, a second planetary carrier, and a second ring gear, a third planetary gear set including a third sun gear, a third planetary carrier, and a third ring gear, a fourth planetary gear set including a fourth sun gear, a fourth planetary carrier, and a fourth ring gear, a fifth planetary gear set including a fifth sun gear, a fifth planetary carrier, and a fifth ring gear, first to ninth rotational shafts, and six friction elements selectively connecting the rotational shafts and the rotational shaft and the transmission housing.

Abstract: A brake assembly includes first and second brakes, a gearset including first and second members, a hub held against rotation, the first brake selectively producing a connection between the hub and the first member, the second brake selectively producing a connection between the hub and the second member, and a support secured to a transmission case and the hub, the support formed with brake-apply circuits, each circuit corresponding to one of the brakes.

Abstract: A torque transmission apparatus, including: a first vibration damper with a first input part arranged to receive torque from an engine, a first output part and at least one first spring engaged with the first input and output parts; and a torque converter including a cover non-rotatably connected to the first output part, an impeller with at least one first blade and an impeller shell non-rotatably connected to the cover, a turbine with at least one second blade and a turbine shell, an output hub and a planetary gear set including a first component non-rotatably connected to the turbine shell or a second component non-rotatably connected to the output hub.

Abstract: A torque split type automatic transmission which transmits the torque output from an engine through two paths, adds the torque passing through and increased in each path, and outputs a final torque, wherein the torque of the engine is divided into two portions by a torque split device and each portion of the torque is transmitted respectively to first and second power delivery paths and wherein the first power delivery path is connected to a launching device, the second power delivery path is connected to a transmission device, and outputs of the launching device and the transmission device meet such that the torques increased at each power delivery path is added to each other and the final torque is output.

Abstract: A damper device is disposed between an engine and a transmission. The damper device includes a differential mechanism. The differential mechanism includes a first input element connected to the engine, a second input element connected to the engine, and an outputting element connected to the transmission. The damper device also includes a first spring disposed between the engine and the first input element, an inertia member disposed between the first spring and the first input element, and a second spring disposed between the transmission and the outputting element.

Abstract: A hydro-mechanical continuously variable transmission for producing high torque output is provided. One transmission includes an engine drive shaft driven by an engine and a planetary gear unit driven by power from the engine and to provide power to drive a transmission output shaft. The transmission also includes a hydrostatic drive unit driven by power from the engine and to drive a primary hydrostatic drive shaft. The transmission includes an engine clutch to be driven by the engine and to drive an input sun gear of the planetary gear unit while engaged. The transmission includes a secondary hydrostatic drive shaft driven by the primary hydrostatic drive shaft and to drive a ring gear of the planetary gear unit. The transmission includes a hydrostatic output clutch driven by the secondary hydrostatic drive shaft and to provide power to drive an output sun gear of the planetary gear unit while engaged.

Abstract: A pneumatic motor mounted on a pneumatic packing machine includes a pneumatic unit. The pneumatic unit is connected with a first planet gear unit. The first planet gear unit is connected with a second planet gear unit. The second planet gear unit is connected with a transmission member. The transmission member is connected to the pneumatic packing machine. Through the first planet gear unit and the second planet gear unit, the pneumatic unit can carry out two-stage deceleration for its output power to enhance the output torque of the transmission member sot that the transmission member can effectively drive the pneumatic packing machine.

Abstract: A continuously variable transmission system and a method of making a continuously variable transmission system is described. The present invention includes a gear set having at least a sun gear, one or more planetary gears, and a planetary gear carrier arm on which the one or more planetary gears are mounted for rotational movement. The sun gear and the one or more planetary gears are mounted for rotational engagement and movement with respect to each other, and one of the sun gears and the planetary gear carrier arm couples to an input shaft and another portion of the gear set couples to an output shaft to receive feedback. A rotary coupling unit having an input rotationally coupled to at least one of the one of the sun gears and the planetary gear carrier arm and an output that rotationally couples to the output shaft is also provided.

Abstract: A continuously variable transmission system and a method of making a continuously variable transmission system is described. The present invention includes a gear set having at least a sun gear, one or more planetary gears, and a planetary gear carrier arm on which the one or more planetary gears are mounted for rotational movement. The sun gear and the one or more planetary gears are mounted for rotational engagement and movement with respect to each other, and one of the sun gears and the planetary gear carrier arm couples to an input shaft and another portion of the gear set couples to an output shaft to receive feedback. A rotary coupling unit having an input rotationally coupled to at least one of the one of the sun gears and the planetary gear carrier arm and an output that rotationally couples to the output shaft is also provided.

Abstract: Disclosed is a shift power transmission apparatus for readily suppressing or avoiding size increase thereof. The apparatus includes an input shaft (22) receiving engine drive force, a hydraulic continuously variable transmission (30) driven by the input shaft (22), a planetary power transmission section (40) combining drive force from the input shaft (22) and output from the hydraulic continuously variable transmission (30) for outputting the combined drive force, and an output rotary member (24) outputting power to a travel apparatus. The planetary power transmission section (40) and the output rotary member (24) are arranged on a side of the hydraulic continuously variable transmission (30) associated with an engine-coupled side of the input shaft (22). The drive force is inputted to the planetary power transmission section (40) from a portion between the engine-coupled side and the hydraulic continuously variable transmission-coupled side of the input shaft (22).

Abstract: The invention relates to a device (1) for transmitting force from an input shaft (4) connected to a drive assembly (2) having constant speed to an output shaft (6) connected to a working machine (3) having variable speed, comprising: a hydrodynamic transducer (20); and a differential transmission designed as a planetary gear unit (1), comprising a ring gear (12), a sun gear (13) and a planet carrier (14) having a plurality of planets (15) as elements of the planetary gear unit. The invention is characterised in that: the hydrodynamic transducer is designed as a counter-movement transducer; the input shaft is directly connected to a pump impeller (7) of the hydrodynamic transducer and a first element (14) of the planetary gear unit; a turbine wheel (10) of the hydrodynamic transducer is directly connected to a second element (13) of the planetary gear unit, and the output shaft is connected at least indirectly to a third element of the planetary gear unit.

Abstract: A superimposed transmission for driving a rotational speed-variable work machine having the following design: an input shaft (2) is connected to an intermediate shaft (3); a pump wheel (5) of a hydrodynamic converter (6) rotates with the intermediate shaft (3); a turbine wheel (7) of the hydrodynamic converter (6) rotates with a superposition means; the intermediate shaft (3) and the transmission means are connected to an output shaft (14) by means of a differential gear (4); and the transmission means is designed as at least one coupling shaft (10), which connection the turbine wheel (7) of the hydrodynamic converter (6) to the differential gear (4). The at least one coupling shaft (10) runs parallel to the intermediate shaft (3). An additional hydrodynamic converter (15) can be present and/or the coupling shaft (10) can be connected in an engageable manner directly to the input shaft (2) by means of an additional transmission (18) for starting the transmission.

Abstract: A final drive assembly for a machine is disclosed. The final drive assembly may comprise a motor coupled with a motor housing, a driven component rotatably mounted on the motor housing by at least one bearing, and a planetary transmission configured to transfer power from the motor to the driven component. The planetary transmission may have a stationary carrier coupled with the motor housing, and the carrier may be adapted to retain the at least one bearing.

Abstract: Components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT) having a variator provided with a plurality of tilting, traction planets and traction rings are described. In one embodiment, a variator is coupled to a rangebox to provide multiple operating modes. In another embodiment, a hydraulic system is configured to control the transmission ratio of the variator and the rangebox. Shift-cam-and-sun subassemblies can be used to facilitate shifting of the transmission ratio of a CVT. A transmission housing and bell housing can be adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Related devices include, for example, a pivot arm, a control feedback mechanism, axial force generation and management mechanisms, a control valve integral with an input shaft, a pivot pin hub, and a rotatable carrier configured to support planet-pivot arm assemblies.

Abstract: An automatic transmission includes an input shaft, a first planetary gear mechanism, a second planetary gear mechanism, a third planetary gear mechanism, a fourth planetary gear mechanism, a first engagement device, a second engagement device, a third engagement device, a fourth engagement device, a fifth engagement device, a sixth engagement device, and a seventh engagement device. Ten forward gears of the automatic transmission are established by bringing at least three of the first to seventh engagement devices into the engagement state.

Abstract: An automatic transmission includes an input shaft, first to fourth planetary gear mechanisms and first to seventh engagement devices. Ten forward gears of the automatic transmission are established by bringing at least three of the first to seventh engagement devices into an engagement state.

Abstract: A torsional vibration damping arrangement includes an input region to be driven in rotation around an axis of rotation and an output region. A first torque transmission path and parallel thereto a second torque transmission path and a coupling arrangement for superposing the torques transmitted via the torque transmission paths are provided between the input region and the output region. A first phase shifter arrangement is provided in the first torque transmission path for generating a phase shift of rotational irregularities transmitted via the first torque transmission path relative to rotational irregularities transmitted via the second torque transmission path.

Abstract: A transmission includes an input member, an output member, at least 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 include clutches and brakes that are actuated in various combinations to establish a plurality of forward gear ratios and a reverse gear ratio.

Abstract: An automatic transmission is provided, which has a drive area, a hydrodynamic converter, and a driven area. In such a transmission, there are power paths via both the hydrodynamic converter, purely mechanical power paths around the hydrodynamic converter and combined power paths. It is provided in accordance with the invention that precisely one planetary gear set is provided in the driven area. A braking means is further provided which is suitable for tightly holding the turbine of the hydrodynamic converter.

Abstract: A continuously variable transmission system and a method of making a continuously variable transmission system is described. The present invention includes a gear set having at least a sun gear, one or more planetary gears, and a planetary gear carrier arm on which the one or more planetary gears are mounted for rotational movement. The sun gear and the one or more planetary gears are mounted for rotational engagement and movement with respect to each other, and one of the sun gears and the planetary gear carrier arm couples to an input shaft and another portion of the gear set couples to an output shaft to receive feedback. A rotary coupling unit having an input rotationally coupled to at least one of the one of the sun gears and the planetary gear carrier arm and an output that rotationally couples to the output shaft is also provided.

Abstract: A hydrodynamic coupling arrangement, particularly torque converter, comprises a housing arrangement (12) which is filled or fillable with fluid, an impeller (20), a turbine (28), a lockup clutch (54), a torsional vibration damping arrangement (42) with an input region (52) and an output region (82), wherein a first torque transmission path (46) and parallel thereto a second torque transmission path (48) and a coupling arrangement (50) for superposing the torques transmitted via the torque transmission paths (46,48) are provided between the input region (52) and the output region (82), wherein the torsional vibration damping arrangement (42) further includes at least in the first torque transmission path (46) a phase shifter arrangement (56) for generating a phase shift of rotational irregularities transmitted via the first torque transmission path (46) relative to rotational irregularities transmitted via the second torque transmission path.

Abstract: A transmission includes a case containing a torque converter that includes a stator, a gearset including a carrier, a second gearset, friction elements for controlling operation of the second gearset, and a support secured against rotation, including passages that communicate hydraulic fluid and pressure to the control elements and torque converter.

Abstract: A power transmitting apparatus configured to improve vehicle starting performance using the torque amplifying function of a torque converter, improve power transmitting efficiency during steady vehicle operation and reduce size of the power transmitting apparatus. A power transmitting apparatus configured to transmit power from a driving source of a vehicle to its wheels configured to selectively transmit/cut-off driving force to the wheels comprises a torque converter having a torque amplifying function. A clutch mechanism includes a first clutch to transmit the driving force to the wheels through a power transmitting system of the torque converter and a second clutch to transmit the driving force without the power transmitting system of the torque converter. A selecting device controls the first/second clutch per the conditions of the vehicle. A planetary gear configured to select the power transmission pathway during forward operation and switch the power transmission pathway during reverse operation.

Abstract: A vehicle drive device that includes a speed change mechanism; a hydraulic transmission provided closer to an engine attachment side than the speed change mechanism is and including a lock-up clutch; an electric motor having a rotor and a stator and connecting the rotor to an input portion of the hydraulic transmission; and an engine power cut-off clutch that transmits or cuts off a driving force of an engine to or from the hydraulic transmission.

Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives first and second directional control assemblies to provide a vehicle with zero turn radius. A variable torque converter may be used in various embodiments to control torque from a minimum to a maximum by controlling movement of a rotor along a shaft in relation to a stator.

Abstract: A power transmitting apparatus, such as an automotive transmission, can be configured to improve vehicle starting performance by using the torque amplifying function of a torque converter, improve the power transmitting efficiency during steady vehicle operation and reduce the size of the power transmitting apparatus. A power transmitting apparatus configured to transmit power from a driving source of a vehicle to its wheels and can be configured selectively transmit or cutting-off the driving force to the wheels can comprise a torque converter having a torque amplifying function. A clutch mechanism can include a first clutch device to transmit the driving force to the wheels through a power transmitting system of the torque converter and a second clutch to transmit the driving force without the power transmitting system of the torque converter.

Abstract: An automatic transmission (1) presents a hydrodynamic converter (3). Consequently, the automatic transmission (1) has a drive region (2) and a driven region (4). The power is split into at least two power branches in the drive region (2). A power branch runs across the hydrodynamic converter (3), another runs parallel thereto. Said at least two power branches are united in the driven region (4). According to the invention, one electrical machine (5) is additionally coupled with the driven region (4).

Abstract: The present invention broadly comprises a torque converter including a cover and a planetary gear set rotationally interfaced with a hydraulic circuit and arranged to modify torque received by the cover from an engine. In some aspects, the gear set includes first and second components rotationally secured to the cover and an impeller shell, respectively. In some aspects, the first and second components are a carrier and ring gear, respectively. In some aspects, the gear set further comprises third and fourth component rotationally connected to a turbine shell and the output hub, respectively. The third component is arranged to receive torque from a clutch or a hub connected to the clutch. In some aspects, the third and fourth components are a carrier and ring gear, respectively. The gear set includes a component rotationally fixed with respect to a torque converter axis, and in some aspects, a ratchet one-way stator clutch.

Abstract: A continuously variable, automatic transmission for a motor driven vehicle including heavy trucks, buses and light automobiles, wherein the vehicle includes an internal combustion engine and driving wheels. The automatic transmission includes a hydraulic torque converter or other hydraulic device and at least one but preferably a plurality of at least two planetary gear assemblies wherein two corresponding portions thereof are operatively interconnected by a free wheeling connector assembly. As such, torque generated by the engine of the vehicle is variably transmitted from the at least one of the planetary gear assemblies to the driving wheels of the vehicle.

Abstract: The invention relates to an automatic transmission (1), comprising a drive area (3), a hydrodynamic converter (2), and a driven area (6). In such a transmission (1), there are power paths via both the hydrodynamic converter (2), purely mechanical power paths around the hydrodynamic converter (2) and combined power paths. It is provided in accordance with the invention that precisely one planetary gear set (7) is provided in the driven area (6). A braking means (18) is further provided which is suitable for tightly holding the turbine of the hydrodynamic converter (2).

Abstract: A mechanical-hydraulic continuously variable transmission and a transmission for vehicle are provided. The mechanical speed changing components of such transmission includes an eccentric mechanism (2), a pushing disc (4), a fixing disc (3), and a driving disc (5). The eccentric mechanism can adjust the eccentric amount between the pushing disc and the power input shaft based on the load of the driving disc. The hydraulic speed changing components of such transmission include a pump runner (6) and a turbine (7) fixed to the driving disc. A power output shaft is coupled to the turbine and extended out of the housing. Based on the advantage of high torque ratio of the mechanical speed changing components at low speed ratio, the turbine of the hydraulic speed changing components can be actuated and accelerated quickly. When the speed ratio reaches a certain value, the main power transmitting path is from the pump runner to the turbine of the hydraulic speed changing components.

Abstract: Provided is a transmission system including: a planetary gear, a first-side mechanism including a chamber and a first-side shaft connected to the chamber, at least one transfer arrangement, including a transfer mechanism and a transfer shaft connected thereto and a second-side mechanism including a second-side shaft. The planetary gear includes a planet carrier, at least one planet gear mounted thereon and at least one of a sun gear and a ring gear. The chamber is fluidly coupled to the transfer mechanism for transfer of rotary motion therebetween. The chamber is connected to one of the gear elements: a planet carrier, a sun gear, or a ring gear, the transfer shaft is connected to one of the gear elements: a planet carrier, a planet gear, a sun gear, or a ring gear, and the second-side shaft is connected to one of the gear elements: a planet carrier, a sun gear, or a ring gear.

Abstract: A multi-step transmission with forward and reverse gears comprises planetary gearsets, shafts and shift elements. The input shaft is coupled to the sun gear of gearset (P2) and, via a clutch (15), to a shaft (5) which is coupled to the carrier of gearset (P3) and, via brake (05), to the transmission housing and, via clutch (57), to shaft (7). Shaft (7) is coupled to the carrier of gearset (P2) and the ring gear of gearset (P1). Shaft (6) is coupled to the sun gear of gearset (P3) and the ring gear of gearset (P2) and, via clutch (36), to shaft (3) which is coupled the carrier of gearset (P1) and, via brake (03), to the housing. Shaft (4) is connected to the sun gear of gearset (P1) and can be coupled, via brake (04), to the housing. The output shaft (2) is connected to the ring gear of gearset (P3).

Abstract: The present invention relates to a transmission apparatus (15) including at least one of a dividing unit (6) and a differential planetary gear unit (30), and a joint unit (20). A rotational power, which has been input to the transmission apparatus (15), is transmitted to the joint unit (20) via the dividing unit (6) or the differential planetary gear unit (30). A rotational power to be input to the joint unit (20) is smaller than the rotational power which has been input to the transmission apparatus (15), and the joint unit comprises a fluid coupling.

Abstract: A continuously variable transmission system and a method of making a continuously variable transmission system is described. The present invention includes a gear set having at least a sun gear, one or more planetary gears, and a planetary gear carrier arm on which the one or more planetary gears are mounted for rotational movement. The sun gear and the one or more planetary gears are mounted for rotational engagement and movement with respect to each other, and one of the sun gears and the planetary gear carrier arm couples to an input shaft and another portion of the gear set couples to an output shaft to receive feedback. A rotary coupling unit having an input rotationally coupled to at least one of the one of the sun gears and the planetary gear carrier arm and an output that rotationally couples to the output shaft is also provided.

Abstract: A decoupler 10 having a rotatable input member 12 for coupling to a drive unit 13 and a rotatable output member 28 for coupling to an output drive, and a gear set 34 for transmitting drive from the rotatable input member 12 to the rotatable output member 28, wherein the decoupler 10 is operable to selectively isolate an input gear 36 of the gear set 34 from driving connection with the drive unit 13, and to selectively engage the input gear 36 into driving connection with the drive unit 13. The invention also relates to a method of transmitting torque and to a method of installing the decoupler 10.

Abstract: The invention relates to a motor vehicle transmission device which, in order to form a plurality of gears, forms a Lepelletier transmission, wherein at least one torsional damper is provided in the Lepelletier transmission, and also to a motor vehicle drivetrain having a motor vehicle transmission device of said type.

Abstract: A compressor starting torque converter method and apparatus for high power rotating equipment strings includes a compressor starting torque converter (CSTC) (16) and gearing to make the input and output speed conform to the speed and power requirements of the at least one compressor (4) at the end of the string. The string also includes a prime mover (10), either a motor or gas turbine with a starter motor. The CSTC is driven by a prime mover that has been geared down (via 18) to an appropriate speed for efficient power transfer, followed by a gear increasing unit (20) to allow the output of the CSTC to be increased to conform to the necessary requirements of a high speed compressor. The gearing can be two separate units with their own housings, or incorporated in a single housing with the CSTC. The CSTC may be a CSTC used in pressurized starts high compressor load strings for LNG refrigeration service.

Abstract: A hydrodynamic coupling device including: a housing; a sealing plate rotationally connected to the housing; a pump disposed within the housing; a turbine disposed within the housing and in fluid communication with the pump; and a dry chamber at least partially enclosed by the housing and the sealing plate. A hydrodynamic coupling device including: a housing; an electric motor rotationally connected to the housing; and a fluid coupling including a pump rotationally connected to the housing and a turbine rotationally connected to an output hub. The fluid coupling does not include a stator. A hydrodynamic coupling device including a space formed between a stator shaft and a pump hub and a sleeve disposed in the space. The sleeve divides the space into first and second channels.

Abstract: The present invention provides an apparatus configured to selectively increase the gear speed ratio coverage of an automatic transmission. The apparatus includes a torque converter operatively connected to and driven by an engine. A planetary gearset is operatively connected to the torque converter and the automatic transmission. Output from the torque converter is transferable through the planetary gearset to the automatic transmission such that additional speed ratios are obtainable. A clutch is disposed between the engine and the automatic transmission. The clutch is configured to selectively couple the engine and the automatic transmission such that the planetary gearset and the torque converter are bypassed.

Abstract: The present invention relates to a transmission apparatus (15) including at least one of a dividing unit (6) and a differential planetary gear unit (30), and a joint unit (20). A rotational power, which has been input to the transmission apparatus (15), is transmitted to the joint unit (20) via the dividing unit (6) or the differential planetary gear unit (30). A rotational power to be input to the joint unit (20) is smaller than the rotational power which has been input to the transmission apparatus (15), and the joint unit comprises a fluid coupling.

Abstract: There is provided a planetary reduction gear 10 between a gas turbine 1 and a generator 5. The planetary reduction gear includes elastic deformation unit 12 on an output side, and for the elastic deformation unit, a strain energy within an elastic limit is set to be larger than a fluctuation torque energy of the generator of a momentary voltage drop time. The elastic deformation unit 12 includes an elastic member which elastically connects an output shaft 10a of the planetary reduction gear to an outer ring 10b. Thereby, when an excessive torque is generated in the generator by a momentary voltage drop, service interruption, and the like for a short time, it is possible to maintain the operation of a power generation facility, and secure a power supply of an important load, and an installation length is shortened and the facility can be downsized.

Abstract: The automatic transmission for motor vehicles, especially with transverse drive with six gear steps, has a main wheel train (2), a front-mounted wheel train (1) and five wet running clutches and brakes (A to E) and is connected to the output shaft of an internal combustion engine via a torsional-vibration damper; the front-mounted wheel train (1) located in force flow direction before the main wheel train (2) is spatially situated behind the main wheel train (2).

Abstract: The invention related to a hydrodynamic-mechanical multi-speed compound transmission has at least four speeds. The transmission includes a transmission input shaft and a transmission output shaft as well as a hydrodynamic transmission part. The hydrodynamic and the mechanical transmission parts are connected in series when seen from the power flow direction. Mechanisms are provided for by-passing the hydrodynamic transmission part during power transmission. The hydrodynamic transmission part includes at least one hydrodynamic speed-torque converter. The mechanical transmission part includes a mechanical speed-torque converting device with at least two planetary gear sets. The mechanical transmission part is designed in such a way that transmission ratios in the individual gear steps cause gear step jumps of phi ≦1.45 between two successive gear steps of the individual speeds.

Abstract: A multiple-ratio automatic transmission comprising a first multiple-ratio gear unit and a second simple planetary gear unit arranged in series in a torque flow path, each gear unit having a reaction brake that can be selectively activated and deactivated to effect a ratio change as the first gear unit is upshifted and the second gear unit is downshifted, ratio changes in each gear unit being effected by pressure-operated clutches and brakes, the brakes having opposed pressure-apply and pressure-release chambers. Separate exhaust flow paths are provided for a reaction brake release chamber and for a companion pressure-operated clutch. A pressure modifier valve circuit is provided for increasing the rate of response to a command for applying and releasing the clutch.

Abstract: A starting apparatus formed by a torque converter is provided between an engine and a continuously variable transmission. A forward and reverse changeover apparatus is formed by a double pinion type planetary gear. Further, a reverse brake is disposed around a ring gear of the planetary gear and a forward clutch is mounted around the reverse brake. A lock-up clutch is provided near the forward clutch. A torque converter case encloses the torque converter, the forward and reverse changeover apparatus, the reverse brake, the forward clutch and the lock-up clutch therein. Since the planetary gear, the reverse brake and the forward clutch are arranged in the radial direction on substantially the same plane, the overall width of the continuously variable automatic transmission can be shortened and the number of components can be reduced.

Abstract: A multiple ratio transmission having a main gear unit with at least three forward driving ratios and a single reverse drive ratio and a simple planetary gear unit in series with the main gear unit, the simple planetary gear unit being downshifted and the main gear unit being upshifted on an upshift from a first intermediate ratio to a higher intermediate ratio, the simple planetary gear unit being upshifted and the main gear unit being downshifted on a downshift from the higher intermediate ratio to the first intermediate ratio, the initiation of the inertia phase of the upshifting mean gear unit on an overall automatic transmission ratio upshift triggering the beginning of the release of a reaction element of said simple planetary gear unit upon downshifting of said simple planetary gear unit.