Aisin Aw Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Tomochika Inagaki

Kazuhisa Ozaki

Minoru Todo

Toshihiko Aoki

Nobutada Sugiura

Takuya Ishii

Satoshi Fukuyama

Kazumichi Kayama

Kazumasa Tsukamoto

Satoru Kasuya

Satoru Wakuta

Masahiro Kojima

Masatoshi Adachi

Kenji Omote

Seigo Kano

Yousuke Andoh

Shundo Yamaguchi

Masahiro Hayabuchi

Masaaki Nishida

Hiroshi Kato

Takuya Fujimine

Kenji Gotou

Takeo Arai

Terufumi Miyazaki

Yoshio Hasegawa

Kozo Yamaguchi

Masaru Morise

Kazuma Hasegawa

Hideki Hisada

Shinji Oita

Masaki Nomura

Toshio Okoshi

Kazuyuki Izawa

Takashi Morimoto

Takayoshi Kato

Yousuke Andou

Tatsuya Sugimoto

Shundou Yamaguchi

Minoru Toudou

Kazuma Hasegawe

An automatic transmissionincludes: a Simpson type complex planetary gear trainincluding single pinion type first and second planetary gearsandand single pinion type third and fourth planetary gearsand; first through fourth clutches Cto C; and first and second brakes Band B. A first carrierof the first planetary gearis coupled to an input shaft. A first ring gearof the first planetary gearis selectively connected to an output shaftby the first clutch C

Multiple speed transmission

An output side transfer memberof a second clutch C-extends around the outer circumferences of the output side transfer membersof the third and first clutches C-, C-, the output side transfer member(or) of a fourth clutch C-and the output side transfer memberof a third clutch C-are linked to a sun gear S, the output side transfer member(or) of a fourth clutch C-, an output side transfer memberof a third clutch C-, and a sun gear S, which rotate integrally, are disposed radially inward with respect to the output side transfer memberof the first clutch C-. Thereby, it becomes possible to reduce the diameter of the output side transfer member(or) of the fourth clutch C-, to reduce the weight and inertia, and to improve the controllability of the automatic transmission

Automatic transmission for a vehicle

A hybrid driving unit () is mounted to a vehicle by coupling a coupling section () at the front end of a casing member () with an internal combustion engine () and by mounting a mounting section () at the rear end of the casing member () to a part () of a body (). Still more, a second electric motor (), i.e., a heavy device, is disposed in the rearmost part among a first electric motor (), a power splitting planetary gear (), the second electric motor () and a transmission disposed on an axis () in the casing member (). Thereby, the vibration occurring in the casing member () is suppressed.

Hybrid drive device and automobile mounted with device

A vehicle automatic transmission includes a planetary gear that reduces a speed of an input rotation of an input shaft and outputs a reduced speed rotation; at least two clutches that are capable of transmitting the reduced speed rotation that passes through the planetary gear; a planetary gear set having at least two rotation elements, wherein each rotation element can transmit the reduced speed rotation transmitted by the clutches; and an input transmitting clutch that is capable of transmitting the input rotation into one of the at least two rotation elements.

Automatic transmission for vehicle

A vehicular automatic transmission is provided with a reduction planetary gear for reducing and outputting an inputted rotation of an input shaft, first and third clutches for enabling the transmission of a reduced rotation reduced through the reduction planetary gear, a planetary gear unit having second and third sun gears to which the reduced rotation is transmitted by the first and third clutches and a fourth clutch for enabling the transmission of the inputted rotation to the second sun gear. The fourth clutch is linked to the second sun gear of the planetary gear unit via output side members, i.e., a clutch drum and a link member, of the third clutch to commonly use as the output side members. Thereby, the automatic transmission may be compactly built.

Vehicular automatic transmission

A hybrid driving unit in which a first electric motor (), a second electric motor (), a transmission () and a power splitting planetary gear () are disposed in order from the front side (the side of an internal combustion engine) on an axis within a casing member (). Since the first electric motor () and the second electric motor () are disposed adjacently to each other, partial cases for storing these first and second electric motors () and () may be combined, thus facilitating the accommodation for producing the unit in series.

Hybrid driving unit and vehicle carrying the same

A first planetary gear unit PR and a clutch Cfor outputting reduced speed rotation are located on one axial side of a second planetary gear unit PU, and a clutch Cfor connecting and disconnecting an input shaftto/from a sun gear Sand a clutch Cfor connecting and disconnecting the input shaftinput to/from a carrier CRare located on the other axial side of the second planetary gear unit PU. An output mechanism is located between the first and second planetary gear units. As compared with a drivetrain wherein the clutch Cor clutch Cis located between the two planetary gear units, the two planetary gear units can be located closer together, and a transmitting member that transmits the reduced speed rotation can be made shorter. Further, compared to a drivetrain wherein the clutches C, C, Care located together on one axial side, the oil supply to the hydraulic servos can be simplified.

Automatic speed changer

A hybrid driving unit () in which a second electric motor () is disposed on the side closer to the front of a vehicle (the side closer to an internal combustion engine ()) than a first electric motor (). A casing member () is formed such that an inner diameter of a part thereof, in which a stator () of the second electric motor () is fixed, is larger than that of a part in which a stator of the first electric motor () is fixed. This allows the second electric motor () to be constructed so as to have a large radial dimension and, to that extent, allows the length thereof in the longitudinal direction to be suppressed. Accordingly, this allows the length of the whole hybrid driving unit () to be shortened.

A planetary gear unit PR and a clutch Cfor outputting reduced speed rotation and a clutch Cfor connecting and disconnecting input of rotation of an input shaft to a sun gear Sare located on one axial side of a planetary gear unit PU, and a clutch Cfor connecting and disconnecting input of rotation of the input shaft to the carrier CRis located on the axially opposite of the planetary gear unit PU. By doing so, as compared to a case wherein, for example, a clutch Cand clutch Care both located between a pair of planetary gear units PR and PU, the planetary gear units PR and PU can be located more closely together, and the member that transmits the reduced speed rotation from planetary gear unit PR to planetary gear unit PU can be made shorter. Further, compared to the case wherein, for example, the clutches CCCare located on one axial side of the planetary gear units, the construction of the oil lines is simplified.

A second planetary gear unit PR and a clutch Cfor outputting reduced speed rotation are located on one axial side of a first planetary gear unit PU, with an output unit located therebetween. A clutch Cwhich connects/disconnects an input shaftto/from a sun gear Sof the planetary gear unit PU and a clutch Cconnects and disconnects the input shaft to/from a carrier CRof the planetary gear unit are on the other axial side of the first planetary gear unit PU. Compared with a transmission wherein a clutch Cor clutch Cis located between the second planetary gear unit PR and the planetary gear unit PU, the second planetary gear unit PR and the first planetary gear unit PU can be located closer together, and a member which transmits the reduced speed rotation can be made shorter. Further, compared to the case wherein, for example, the clutches C, C, Care located together on one axial side, oil supply to their servos is simplified.

The invention includes a target-engine-speed acquisition element that acquires a target engine speed necessary to reduce engine speed, thereby stopping the engine at a target stop position; a crank-angle acquisition element that acquires a crank angle indicative of the position of a crankshaft; and a target-engine-speed correction element that corrects the target engine speed according to the acquired crank angle. Because the target engine speed is corrected according to the crank angle, the engine can be stopped at the target stop position even if the friction in the engine, the electric motor, etc. varies, the temperature or viscosity of the lubricating and cooling oils varies, or the vehicle is accelerated or decelerated during the reduction of the engine speed.

Vehicle-drive control system and method and program therefor

A reduced rotation output unit for outputting a reduced rotation obtained by reducing rotation of an input shaft is arranged at one side of a planetary gear unit in an axial direction, a first clutch and a second clutch interposed between a second rotation element of the planetary gear unit, and a third rotation element and the input shaft are arranged at the other side of the planetary gear unit in the axial direction, and an output member is arranged between the first clutch, the second clutch and the planetary gear unit. Accordingly, it is possible to position the reduced rotation output unit and the planetary gear unit close to each other, and it is possible to make a transmission member that transmits the reduced rotation output from the reduced rotation output unit to the planetary gear unit short.

Automatic transmission

A reduction in the weight and size of a speed-change mechanism is obtained by shortening a high-torque transmission system. The speed-change shock is attenuated by reducing an inertia torque in a muilti-stage vehicular automatic transmission. The vehicular automatic transmission is equipped with a planetary gear set that receives a decelerated rotation and a non-decelerated rotation as inputs and outputs a plurality of speed-change rotations, a reduction planetary gear, an input shaft that passes through an inner side of the planetary gear set, first and third clutches that couple the input shaft to two different speed-change elements of the planetary gear set respectively through the reduction planetary gear in an engageable and disengageable manner, and a second clutch that couples the input shaft to the other speed-change element of the planetary gear set in an engageable and disengageable manner. The reduction planetary gear and the third clutch for transmitting a high torque are arranged on one side of the planetary gear set, whereas the first clutch for transmitting a high torque is arranged on the other side of the planetary gear set.

An automatic transmission, which establishes automatic shifts in a multiple gear stages by selectively inputting a plurality of input rotations to a planetary gear set, includes first and third clutches connected through a reduction planetary gear to an input shaft and transmits a decelerated rotation to the planetary gear set and a second clutch directly connected to the input shaft and transmits a non-decelerated rotation to the planetary gear set. The reduction planetary gear is arranged on the end of a boss portion of a transmission case wall and the one element is fixed to the end of the boss portion, hydraulic servos of the first and third clutches are arranged on the boss portion, a hydraulic servo of a second clutch is arranged in the other side of the reduction planetary gear from the hydraulic servos, and the hydraulic paths for the hydraulic servos are formed in the boss portion.

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Anjo, Japan

Tomochika Inagaki