Toyota Jidosha Kabushiki Kaisha

Other

Toyoda Koki Kabushiki Kaisha

Tomoyuki Kano

Kunihiko Suzuki

Toshifumi Sakai

Akihiko Ikeda

Shinji Ogawa

Naoyuki Kokubo

Mitsuru Ohba

Satoshi Ashida

Hirokazu Suzuki

Masayuki Shimada

Hiroshi Takuno

Takashi Hosokawa

Akihiko Ichikawa

Naoyuki Sakai

Fumitomo Tsuchiya

Moritaka Isomura

Akio Suzuki

Tomomitsu Terakawa

Tomoaki Yanagida

Yukihiro Inaba

Junichi Kato

Masato Matsubara

Hisashi Fukuchi

Tomohiro Maruyama

Takahiro Nakazato

Yasuhisa Iwasaki

Taro Shiozaki

A vehicle transmission includes a shaft; speed-changing gears; switching mechanisms; and a shifting mechanism. The shifting mechanism is provided with a double-meshing preventing mechanism configured to switch between a one-way state in which the switching mechanisms are hindered from moving in a downshift direction and allowed to move in an upshift direction and a free state in which the switching mechanisms are allowed to move in both the downshift direction and the upshift direction.

Vehicle transmission and control device for vehicle transmission

The other end of a hub portion is located farther from an attachment portion at a lateral portion, which is located in a lateral direction with respect to the vehicle, than at a vertical portion, which is located in a vertical direction with respect to the vehicle. The vertical portion of the hub portion has a concave end face on the side of the other end of the hub portion, which is formed to get closer to the attachment portion as the concave end face approaches a portion closest to the attachment portion substantially at the center of the hub portion in the lateral direction.

Torque tube

In an inspection procedure of a completed product of an automatic transmission main body at a unit factory, a control system transmits a control signal to an actuator to receive characteristic data (hardware performance information) output in response to operation of the automatic transmission main body according to the control signal. The hardware performance information of the automatic transmission main body is brought into correspondence with hardware identification information, and set in a database as learning value data. The learning value data of the automatic transmission main body is transferred to a vehicle factory to be aggregated in a database management system at the vehicle factory. When the automatic transmission main body is assembled with an electronic control device, learning value data of the automatic transmission main body is read out based on the hardware identification information from the database management system, and written into an AT_ECU during the inspection procedure of a completed vehicle at the vehicle factory.

Writing method of hardware performance information of unit in vehicle

A driving force transmission system comprising: a coupling case and a shaft arranged rotatably relative to each other; a pilot clutch and a main clutch for controlling a torque transmission between the coupling case and the shaft; an electromagnet for controlling the actions of the pilot clutch and the main clutch; and oil retaining the functions of the pilot clutch and the main clutch. This system further comprises a coupling case, a shaft, a rotor, and X-ring and an O-ring isolating a coupling oil chamber, in which the pilot clutch and the main clutch are arranged, liquid-tight from the surrounding space.

Driving force transmission system

A driving force transmission system comprising: a coupling case and a shaft arranged rotatably relative to each other; a pilot clutch and a main clutch for controlling a torque transmission between the coupling case and the shaft; an electromagnet for controlling the actions of the pilot clutch and the main clutch; and oil for retaining the functions of the pilot clutch and the main clutch. This system further comprises a coupling case, a shaft, a rotor, an X-ring and an O-ring for isolating a coupling oil chamber, in which the pilot clutch and the main clutch are arranged, liquid-tight from the surrounding space.

There is disclosed a drive force transmission apparatus which includes a first pressing-force generation unit for generating a pressing force in accordance with a rotational speed difference between driving and driven shafts, and a frictional clutch which is brought into an engaged state by the pressing force generated by the first pressing-force generation unit in order to transmit torque in accordance with the rotational speed difference between the driving and driven shafts. The drive force transmission apparatus further includes a second pressing-force generation unit disposed opposite to the first pressing-force generation unit with respect to the frictional clutch. When needed, the second pressing-force generation, unit is operated to bring the frictional clutch into a firmly engaged state, thereby improving the traveling performance of the vehicle under severe traveling conditions, such as an attempt to extract a wheel trapped in a gutter or the like, traveling on a rough road, traveling on sand, etc.

Drive force transmission apparatus

Power transmitting device wherein power received from drive source (22) through an input member (44) is distributed to two side gears (12, 14) engaging respective pinions (16, 18), so as to permit differential rotation of the side gears, through differential case (10) which houses the side gears and rotatably supports the pinions, and through a partition wall (42) which is interposed between the side gears so as to be rotated with the input member and the differential casing.

Power transmitting device wherein power is distributed to two side gears

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Toyota, Japan

Tomoyuki Kano