Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Tokyo University of Science Foundation

Makoto Funahashi

Mitsuru Takada

Hiroshi Itoh

Tokuyuki Takahashi

Yuji Iwase

Tomohito Ono

Atsushi Tabata

Koichi Okuda

Seitoku Kubo

Akira Murakami

Tooru Matsubara

Tatsuya Imamura

Hideaki Komada

Kensei Hata

Shinya Nakamura

Yosuke Suzuki

Mitsuhiro Umeyama

Seitaro Nobuyasu

Kensuke Yoshizue

Eiji Ichioka

Kinya Yoshii

Takeharu Koide

Junichi Deguchi

Takashi Shimizu

Hiroshi Ito

Hiroyuki Shibata

Yukihiko Ideshio

Masahiro Hasebe

Ryuji Ibaraki

Takahito Endo

Hiroyuki Amano

Michio Yoshida

Hiroaki Ebuchi

Yuta Oshiro

Koujiro Kuramochi

Yusuke Kobayashi

Masahiro Kojima

Masatoshi Adachi

Takahiro Shiina

Keita Imai

Yasunori Nakawaki

Shotaro Kato

Seiji Masunaga

Hiroto Hashimoto

Toshiya Yamashita

Hirotatsu Kitabatake

Shigeru Okuwaki

Hidekazu Nagai

Yosuke Murakami

Yoshihiko Sasaki

Shinichi Ito

Toshihiro Aoyama

Sho Mizushino

Nobukazu Hoshi

Koichi Watanabe

Tomoya Abe

Shojiro Oya

Yoshinobu Kuroyama

Takashi Kuwabara

Teruhumi Miyazaki

Yasuhiro Shioda

In a control device for a switched reluctance motor, a voltage drop control is executed in which a voltage dropped to be lower than a voltage applied in a case where the switched reluctance motor is driven in a high-load region is applied to the switched reluctance motor, in a case where the switched reluctance motor is driven in a low-load region. The low-load region is a lower load region than the high-load region.

Control device for switched reluctance motor

A control device for a vehicle is provided. The control device includes an ECU. The ECU includes a first traveling mode. The first traveling mode includes a second traveling mode, a third traveling mode, and a fourth traveling mode. The ECU is configured to select the second traveling mode if the vehicle speed is in a low vehicle speed range equal to or lower than a predetermined vehicle speed when the ECU selects the first traveling mode, to select the third traveling mode if the vehicle speed is in a high vehicle speed range equal to or higher than the predetermined vehicle speed, and to select the fourth traveling mode if the vehicle speed is in a vehicle speed range between the low vehicle speed range and the high vehicle speed range.

Control device for vehicle

An electronic control unit switches a switching circuit such that a switched reluctance motor has a first winding pattern, when, with respect to a boundary dividing a driving range of the switched reluctance motor into two ranges, a torque and a rotational speed of the switched reluctance motor that are determined according to an applied voltage are located in the first range on the low load side. The electronic control unit switches the switching circuit such that the switched reluctance motor has a second winding pattern, when the torque and the rotational speed of the switched reluctance motor are located in a second range different from the first range.

Circuit and control method for the same

In a control system and a control method, an electronic control unit is configured to crank an engine by setting a clutch to a half engaged state in a state where operation of the engine is stopped during traveling. The half engaged state is a state where the clutch is engaged with a slip. The electronic control unit is configured to, after a rotation speed of the engine has reached an ignition permission rotation speed or higher, increase a transmitted torque capacity of the clutch to a transmitted torque capacity that satisfies the following conditions i) and ii): i) the transmitted torque capacity is larger than a transmitted torque capacity before the rotation speed of the engine has reached the ignition permission rotation speed; and ii) the transmitted torque capacity allows the clutch to be kept in the half engaged state.

Control system and control method

A control system of a hybrid vehicle, in which a driving power source for travel includes an engine that is started by cranking, a motor that can control a torque, and a clutch that is coupled with the motor and in which a transmission torque capacity continuously changes depending on a change of a control amount is configured to estimate a torque of the clutch based on the torque that the motor outputs, and change rates of the rotational speed of the motor and the clutch caused by changing the control amount, when the torque that the motor outputs is transmitted by the clutch that is in a slip state by changing the control amount.

Control system for hybrid vehicle

An intermesh engagement device includes an intermesh engagement mechanism, a moving member, an actuator configured to apply a thrust to a moving member in an engaging direction, a transmission spring configured to transmit the thrust of the actuator from the moving member to a sleeve, a return spring, a stopper, and an electronic control unit configured to control the actuator. The electronic control unit is configured to execute first control for setting the thrust of the actuator to a thrust in a first region, and, when a halfway stopped state has occurred through the first control, execute second control for setting a thrust larger than the thrust in the first control. The first region is a range in which the thrust is larger than an urging force of the return spring and is smaller than the sum of the urging force of the return spring and a maximum urging force of the transmission spring.

Intermesh engagement device

A vehicle drive device comprising: an engine, a first electric motor, and a second electric motor disposed on a first axis; a first axis output portion outputting power of the first axis; a second axis input portion that is an input portion of a second axis to which power from the first axis output portion is input, the second axis being parallel to the first axis; a second axis output portion outputting power of the second axis; a transmission changing speed between the second axis input portion and the second axis output portion, the transmission being disposed on the second axis; and a third axis input portion that is an input portion of a third axis to which power from the second axis output portion is input, the third axis being parallel to the first axis, the first axis output portion, the second axis input portion, the second axis output portion, and the third axis input portion all being disposed between the first electric motor and the second electric motor in a direction of the first axis, the transmission including at least a first planetary gear device and a second planetary gear device, the second axis input portion and the second axis output portion being disposed between the first planetary gear device and the second planetary gear device in a direction of the second axis.

Vehicle drive device

Provided is a hybrid vehicle driving apparatus including: a power transmission mechanism which is connected to an engine and is able to output a rotation of the engine while changing the rotation speed; a differential mechanism which connects the power transmission mechanism and a drive wheel to each other; and a regulation device, wherein the differential mechanism includes a first rotation component which is connected to an output component of the power transmission mechanism, a second rotation component which is connected to a first rotating electric machine, and a third rotation component which is connected to a second rotating electric machine and the drive wheel, and wherein the regulation device switches between a state where a differential operation of the differential mechanism is regulated and a state where the differential operation of the differential mechanism is allowed.

Hybrid vehicle driving apparatus

A driving device for a hybrid vehicle including a power transmission mechanism () that is connected to an engine () and transmits a rotation of the engine; a differential mechanism () that connects the power transmission mechanism to driving wheels (); and a switching device (CL, BK) that performs speed change of the power transmission mechanism, wherein the differential mechanism includes a first rotary element () that is connected to an output element () of the power transmission mechanism, a second rotary element () that is connected to a first rotating electrical machine (MG) and a third rotary element () that is connected to the second rotating electrical machine (MG) and the driving wheels, and wherein the rotation of the output element of the power transmission mechanism is limited by the switching device.

Driving device for hybrid vehicle

A vibration damping device capable of achieving sufficient vibration damping effect utilizing members for converting kinetic energy into thermal energy. In the vibration damping device, a plurality of members is attached to an object to be vibrated in a manner to displace relatively while being contacted with each other, and vibrations of the vibrating object is damped by converting kinetic energy resulting from the vibrations of the object into thermal energy by the relative displacement of the plurality of members. The vibration damping device includes a tightening member, which is attached to the plurality of members to tighten the plurality of members so as to increase frictional force among the plurality of members.

Vibration damping device

A drive system includes a transmission mechanism that establishes a plurality of gear positions comprising a first-speed through sixth-speed gear positions and a reverse-drive gear position, by switching among change gear trains and coupling a first driveshaft to an output member, and also includes a lock clutch that switches a power distribution mechanism between a locked state in which a ring gear and a carrier are coupled to each other and are inhibited from rotating in a differential fashion, and a released state in which the inhibition of the differential rotation is cancelled.

Vehicle drive system

A vehicle transmission includes at least two driving shafts to which power is transmitted from a power source, a driven shaft to which power is transmitted from the driving shafts, drive transmission mechanisms disposed between the driving shafts and the driven shaft, and a switching mechanism that selectively enables power transmission via the drive transmission mechanisms. The driving shafts are disposed concentrically and fitted rotatably relative to each other. The driving shafts are parallel to the driven shaft. A first drive unit is disposed coaxially with the driving shafts. A second drive unit is disposed coaxially with the driven shaft. The first and second drive units are interconnected so as to send and receive powers changed in energy form to and from each other. The transmission thus constructed is excellent in power transmission efficiency, quietness, vehicle mountability, etc., and can realize continuously variable speed change.

Power split dual input shaft transmission for vehicle

A hydraulic control unit (), for a power transmission system having an oil receiving device (), which controls a power transmitting condition of the power transmission system, and an oil reserving device for feeding the oil to the oil receiving device, wherein the oil reserving device comprises a piston () in which a diametrically large portion and a diametrically small portion are arranged integrally and coaxially, a first hydraulic chamber () in which the diametrically large portion, and a second hydraulic chamber () in which the diametrically small portion are housed liquid-tightly and movably back and forth; and an oil feeding amount control device for feeding the oil of the first hydraulic chamber to the oil receiving device, by raising the oil pressure in the second hydraulic chamber () to operate the piston ().

Hydraulic control unit

A control device for a hybrid vehicle, which has; a first prime mover and a second prime mover for transmitting a power to a wheel; a power distribution device for distributing the power of said first prime mover to the wheel and to a rotary device; a transmission arranged on a power transmission route from said second prime mover to the wheel; and a gear ratio control device for controlling a gear ratio of the transmission; characterized in that comprising a sub control device for controlling a status of said transmission to enable suppression of decline in a driving performance of the vehicle, even when the function of said gear ratio control mechanism declines.

Control system for hybrid vehicles

An automatic transmission having a construction in which a third planetary gear mechanism is arranged in parallel with CR--CR coupled first and second planetary gear mechanisms so that the drive force is transmitted from the carrier of the first planetary gear mechanism to the ring gear of the third planetary gear mechanism. The input is transmitted to a first sun gear through a first clutch and to a second sun gear through a second clutch. The construction further includes a one-way clutch for fixing the sun gear of the third planetary gear mechanism.

Automatic transmission

Growing community of inventors

Gotenba, Japan

Makoto Funahashi