Abstract: A power transmission device includes a motor, a gear mechanism connected downstream of the motor and lubricated by oil, and a box. The box has a wall part that covers an outer circumference of the gear mechanism, and a jacket part that covers an outer circumference of the wall part. A cooling chamber, in which cooling liquid is introduced, is formed between the wall part and the jacket part. The cooling chamber includes a portion that overlaps with the gear mechanism when seen from a radial direction, and a portion that overlaps the gear mechanism when seen from an axial direction.

Abstract: Methods and systems are provided for an accessory drive device. In one example, the accessory drive device comprises an input belt coupled to a pulley of a two-speed device and an output pulley coupled to an output belt configured to provide energy to an alternator or a belt integrated starter generator.

Abstract: A transmission for a system, in which a directed force is introduced eccentrically with respect to a main shaft of the transmission, comprising the main shaft which is rotatably mounted in relation to a stationary housing by a main shaft bearing, a sun gear which is fixedly connected to the housing being arranged concentrically around the main shaft, and at least one control housing that rotates around the housing, wherein the first section thereof acts on the main shaft in a rotationally fixed manner and a planetary wheel is rotatably mounted by a first rotary bearing on the second section thereof, said planetary gear meshing with the sun gear. According to the invention, a force transmission means is fastened to the control housing and a drive crank rigidly engages the first end on the planetary wheel, wherein a second end of the drive crank is mounted in an articulated manner on a crank arm, said crank arm being supported in relation to the control housing by a movable coupling means.

Abstract: A lock-up control apparatus includes a kick-down instruction detector configured to detect a kick-down shift transmission instruction during application of a lock-up clutch. A first lock-up control amount changer is configured to change the lock-up control amount when the kick-down shift transmission instruction is detected. An intermediate gear speed determinator is configured to determine whether the kick-down shift transmission instruction includes an intermediate gear speed shift transmission instruction to an intermediate shift transmission gear speed. A second lock-up control amount changer is configured to change the lock-up control amount when the kick-down shift transmission instruction includes the intermediate gear speed shift transmission instruction. A target gear speed shift transmission instruction detector is configured to detect a target gear speed shift transmission instruction.

Abstract: A transaxle can include a housing, a low range gear assembly, and a differential gear assembly. The low range gear assembly can be mounted in the housing and can include a ring gear, a carrier, planet gears, a sun gear, and a clutch. The ring gear, the carrier, and the sun gear can be mounted in the housing. The planet gears can be rotatably mounted on the carrier and can engage the ring gear while the sun gear can engage the planet gears. The clutch can be selectively movable between a first position where the clutch engages each of the sun gear and the carrier and permits rotation of the sun gear relative to the housing and a second position where the clutch engages each of the sun gear and the housing and rotationally fixes the sun gear relative to the housing.

Abstract: A controller has a command section, a control section, a time measurement section, and a command fixing section. The command section generates a command regarding the actuation state of a lock-up clutch in accordance with a condition value that is determined by the accelerator operating amount and the vehicle speed. The time measurement section starts to measure time when the accelerator operating amount drops to 0 with the current condition value maintained in a hysteresis range and the command section generates the acceleration slip executing command. When the accelerator operating amount is increased from 0, the time measurement section stops the measurement of time and resets the measured time to 0. The command fixing section fixes the command of the command section as an acceleration slip executing command in the period from when the time measurement by the time measurement section has started to when the measured time reaches a determination value.

Abstract: A low-ratio transmission system configured to obtain the multiplication or reduction of speed, and the reduction or multiplication of stress between an input shaft and an output shaft with at least four different values, such that the input-output ratio can be close to one and furthermore that the four values form a geometric progression close to one.

Abstract: A clutch arrangement, especially adapted for use in an aircraft nose wheel landing gear steering arrangement, includes a rotatable drive input, a rotatable output, and an epicyclic gear arrangement, and a carrier upon which the planet gears are mounted, the drive input being connected to the ring gear of the gear arrangement or the carrier, the output being connected to the other of the ring gear or the carrier, and a clutch operable to control relative rotation between the ring gear and the sun gear and to direct the major portion of the torque being transmitted therethrough the first of two transmission paths.

Abstract: A hybrid electric vehicle powertrain has an engine, a motor, a generator and a battery that define electro-mechanical power flow paths to vehicle traction wheels in both a forward drive operating mode and a reverse drive operating mode. The engine drives a power input element of a power-dividing gearset and the generator is connected to a reaction element of the power-dividing gearset. A torque reversing gearset drivably connects a power output element of the power-dividing gearset to final drive gearing to complement reverse driving motor torque.

Abstract: A power train for hybrid vehicles increases the range of the transmission gear ratio within which the efficiency of the power train is superior. Furthermore, the method of operating the power train varies depending on the transmission gear ratio, and thus the power train can be operated with superior efficiency.

Abstract: A vehicle drive assembly includes an integrated two-speed motor that can selectively drive an output at a high operating speed or a low operating speed. The two-speed motor includes a stator mounted to a non-rotating outer housing, and a rotor that is mounted for rotation relative to the stator. The rotor is supported an inner rotor support that defines an inner cavity. A two-speed shifting mechanism is incorporated into the inner cavity and is used to drive an output. The two-speed shifting mechanism includes a gear assembly and first and second clutch assemblies that cooperate with each other to provide low and high speed output capability as needed.

Abstract: A two speed transmission comprising a planetary gear train comprising an input member connected to an input carrier, the input carrier connected to an input shaft, a sun gear and a ring gear, the input carrier comprising a plurality of planetary members each in meshing engagement with the sun gear and the ring gear, the sun gear connected to a brake member, the ring gear connected to an output member, and a one-way clutch operably disposed between the input shaft and the output member.

Abstract: A transmission apparatus includes at least an auxiliary transmission for supplementing a main transmission. The auxiliary transmission includes a damper which has a damper characteristic adapted to a low speed select state of the auxiliary transmission, and which is disposed in a low speed transmission path used for transmission of torque in the low speed select state of the auxiliary transmission. The auxiliary transmission further comprises a bypass member defining a bypass transmission path bypassing the low speed damper. The bypass transmission path is a torque path used for transmission of torque in a high speed select state of the auxiliary transmission.

Abstract: A powertrain includes a planetary gear arrangement, an engine, an input clutch, an input shaft, and an output shaft. The planetary gear arrangement includes a simple planetary gearset and a compound planetary gearset, each of which has connected therewith three synchronizer mechanisms. The synchronizer mechanisms are manipulated in various combinations to establish ten forward speed ratios and one reverse speed ratio between the input shaft and the output shaft.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least seven forward speed ratios and at least one reverse speed ratio. The transmission family members include three planetary gear sets having six torque-transmitting mechanisms and a fixed interconnection. Also, one planetary gear member is continuously connected with the transmission housing. The powertrain includes an engine and torque converter that is not continuously connected with any of the planetary gear members and an output member that is continuously connected with one of the planetary gear members. The six torque-transmitting mechanisms provide interconnections between various gear members, the input shaft, the output shaft, and with the transmission housing, and are operated in combinations of three to establish at least seven forward speed ratios and one reverse speed ratio.

Abstract: A family of power transmissions, which are individually employed in a powertrain, include three planetary gearsets and five torque-transmitting mechanisms. The torque-transmitting mechanisms are engaged in combinations of two to establish a reverse speed ratio and at least six forward speed ratios between a transmission input shaft and a transmission output shaft. Each of the family members has a member of a first planetary gearset continuously connected with a member of the second planetary gearset, another member of the second planetary gearset continuously connected with a member of the third planetary gearset, and a third member of the second planetary gearset being continuously connected with a transmission housing. The input shaft and output shaft are continuously connected with at least one respective member of the planetary gearsets. At least two members of the planetary gearsets are non-continuously connected members. These members are components of the first or third planetary gearsets.

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

Abstract: A hybrid transmission includes a multi-speed planetary gearbox, an automated shift system, and an electric motor/generator. The electric motor is operably controlled to drive the gearbox to establish an electric drive mode. The electric mode is further operable to provide a speed synchronization function during sequential gear shifting. The transmission includes plurality of power-operated clutches arranged to selectively engage components of the planetary geartbox to establish the distinct gear ratios. A central system functions to control automated operation of the power-operated clutches as well coordinated actuation of the engine and the electric motor.

Abstract: A family of transmissions has a plurality of members each of which includes three planetary gearsets, five torque-transmitting mechanisms, an input shaft, and an output shaft. The torque-transmitting mechanisms are selectively engageable in combinations of three to establish at least six forward speed ratios and one reverse speed ratio between the input shaft and the output shaft of each family member. Each family member has two continuous interconnecting members, one of which interconnects a member the first planetary gearset with a member of the second planetary gearset, and the second of which connects another member of the second planetary gearset with a member of the third planetary gearset. The five torque-transmitting mechanisms complete the connections between the planetary gear members and/or the transmission housing which are necessary to provide the six forward speed ratios and one reverse speed ratio.

Abstract: A powertrain has an engine, torque converter, and planetary transmission that includes an input shaft, an output shaft, two simple planetary gear sets, rive rotating torque transmitting mechanisms (clutches) and one stationary torque transmitting mechanism (brake). The planetary gear sets are interconnected with both a permanent interconnection and a selective interconnection. A first member of a first of the planetary gear sets is continuously connected with the output shaft and a first member of the second planetary gear set is continuously connected with a stationary portion of the transmission. Two of the clutches are operable to selectively connect the input shaft with the second and third members of the first planetary gear set, respectively. A third of the clutches is connectable between the second member of the second planetary gear set and the output shaft. The brake is selectively connectable between the second member of the first planetary gear set and the stationary portion.

Abstract: In a transmission which transmits a power from an electrical motor 1 to a countershaft 30 with a speed change, a drive side rotating member which is coupled to a main shaft 10 experiences a rotational change along with the main shaft 10 when a shift from a first speed ratio to a second speed ratio is executed, and an intermediate rotating member experiences a rotational change in a direction opposite to that of the drive side rotating member when the shift is executed. In this transmission, the ratio of the rotational inertia of the drive side rotating member to the rotational inertia of the intermediate rotating member equals the reciprocal of the ratio of the rotational change of the drive source to the rotational change of the intermediate rotating member, the rotational changes being experienced during the shift.

Abstract: In a planetary gear, at least one planet wheel (9) is coupled by a freewheel (19) to the planet carrier (7), and the sun wheel (3) is coupled by a freewheel (13) to a center spindle (1) fixed to a casing. By the freewheels (13, 19), it is achieved that the gearing effect is released or non-positively bridged depending on the driving direction. When the direction of rotation is reversed, the freewheels (13, 19) in both directions of rotation block the planetary gear "solid" and thus the power transmission. One application is, e.g., in integrated starter/generator assemblies for internal combustion engines.

Abstract: This invention relates to a power transmission device for coupling an input or driving shaft with an output or driven shaft. The power transmission device permits the output shaft to be engaged or disengaged from the input shaft. The device comprises a first side gear mechanically connected to the output shaft and a second side gear mechanically coupled to a brake which can decrease the rate of rotation of the second side gear to zero. In one embodiment, the gear ratio between the first side gear and the second side gear is greater than one. The device further comprises carried gears rotatably engageably coupled with the first and second side gears such that the carried gears rotate between and around the first and second side gears. The carried gears are carried by a gear carrier. The carried gears are mechanically connected to the gear carrier such that rotation of the input shaft on its axis causes the gear carrier to carry the carried gears around the first and second side gears.

Abstract: A change-speed hub having a fixed shaft, a hub body rotatably mounted on the fixed shaft, a drive member rotatably mounted on the fixed shaft for transmitting a drive force to the hub body selectively through a plurality of transmission channels, a clutch for selecting one from the transmission channels, a plurality of sun gears rotatably mounted on the fixed shaft and having diameters differing from each other and a lock control mechanism for controlling locking and releasing of the sun gears relative to the fixed shaft. The sun gears have axial movements thereof substantially limited. On the fixed shaft, there is rotatably mounted a control member. The control member includes a first control portion for controlling the clutch and second and third control portions for activating the lock control mechanism for selectively locking the sun gears to the fixed shaft.