Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Toyoda Jidosha Kabushiki Kaisha

Toytoa Jidosha Kabushiki Kaisha

Toyota Jidhosa Kabushiki Kaisha

Hiroatsu Endo

Hidehiro Oba

Kazumi Hoshiya

Tatsuya Ozeki

Masatoshi Ito

Kazuo Kawaguchi

Takahiko Tsutsumi

Koki Ueno

Mitsuhiro Umeyama

Ichiro Kitaori

Satoru Wakuta

Yoichi Tajima

Tetsuo Hori

Kazuomi Okasaka

Hisanori Nomoto

Kiyotomo Miura

Tooru Matsubara

Yuji Iwase

Akira Murakami

Akihiro Sato

Shigeki Takami

Masataka Sugiyama

Masashi Yoshimi

Hiroki Kuwamoto

Shinichi Sasade

Takashi Yuma

Kenji Miyasaka

Yoshitaka Suzuki

Masayuki Matsui

Shinobu Nishiyama

Kentaro Kakuse

Mitsuhiro Nada

Hiroyuki Shioiri

Masahiro Kojima

Yukio Kinugasa

Masatoshi Adachi

Kazuyuki Noda

Koji Hayashi

Shinichi Kojima

Toshinari Suzuki

Taiyo Uejima

Atsushi Kayukawa

Yoshimitsu Yokouchi

Haruo Isomura

Akitaka Ichikawa

Isao Sato

Ryo Watanabe

Osamu Kanai

Keisuke Sekiya

Masato Fujikawa

Nobuyuki Nagashima

Kazuhito Enomoto

Seiichi Kinugasa

Akira Kasamatsu

Masanori Ohtake

Ryo Matsumoto

Taihei Wakamatsu

Hiromichi Chuujou

A support structure for rotating shafts of a vehicle, including: a drive shaft operatively connected to a power transmitting shaft to which a drive force of an engine is transmitted; and a rotor shaft of an electric motor spline-coupled to the drive shaft, each of the rotor shaft of the electric motor and the drive shaft is being supported by at least one bearing, in the support structure, one of the rotor shaft and the drive shaft is constituted by a first rotary shaft and a second rotary shaft which are operatively connected to each other, and an elastic member is interposed between the first rotary shaft and the second rotary shaft such that the first and second rotary shafts are operatively spline-connected to each other through the elastic member.

Support structure for rotating shafts of vehicle

A hybrid vehicle includes an engine, a first motor generator, a dynamic damper, and a power split mechanism. The dynamic damper includes an output-side rotating member, a spring element, and a second motor generator connected to the output-side rotating member so as to transmit the power. The dynamic damper is configured by connecting the output-side rotating member and the second motor generator via the spring element. The power split mechanism splits a power from the engine to the first motor generator and to the output-side rotating member. The control device includes an electronic control unit. The electronic control unit configured to change execution modes of rattling noise suppression control based on a spring characteristic of the dynamic damper. The rattling noise suppression control is a control to suppress rattling noise resulting from rotational fluctuations of the engine.

Control device for hybrid vehicle

A control apparatus is applied to a hybrid vehicle having a driving apparatus including a power split mechanism which splits torque of an internal combustion engine into a first MG and output portion, and a motor lock mechanism which switches a state of the power split mechanism between a differential state in which the torque of the internal combustion engine splits into the first MG and output portion and a non-differential state in which it is stopped to split the torque. The hybrid vehicle switches a driving mode between a first driving mode in which the power split mechanism is switched to the differential state and a second driving mode in which the power split mechanism is switched to the non-differential state. The control apparatus calculates energy loss of the driving apparatus in each driving mode, and switches the driving mode of the vehicle based on the calculated energy loss.

Control apparatus for hybrid vehicle

A drive device of a hybrid vehicle includes an engine and an electric motor acting as power sources, and further includes: a first rotating member coupled to the electric motor; a second rotating member to which power from the engine is transmitted; and a gear pair made up of helical gears formed on the first rotating member and the second rotating member to couple the first rotating member and the second rotating member in a power transmittable manner, within a case, an inner wall extending from an outer wall of the case toward an inside of the case is in the case, and an elastic member pressing the first rotating member toward the inner wall is provided in a preloaded state between the first rotating member and the inner wall.

Drive device for hybrid vehicle

An ECU is connected to a multi-system shift sensor detecting a shift lever position in a shift direction associated with detection of the R position, and to a multi-system select sensor detecting a shift lever position in a select direction not associated with detection of the R position. When only one or more, but not all, of sensors in the select sensor are abnormal, the ECU controls the shift range according to the shift position detected based on the remaining proper sensor. When only one or more of sensors in the shift sensor are abnormal, the ECU maintains the current range until an operation of a shift lever is detected, and switches the shift range to the N range at the point of time of detecting an operation of the shift lever.

Vehicle control device

Controlling a hybrid vehicle includes: reducing a rotation speed of a motor generator before a locking apparatus that locks the motor generator is switched from a disengaged condition to an engaged condition; starting to switch the locking apparatus to the engaged condition when the rotation speed decreases to a predetermined operation permission rotation speed; controlling the locking apparatus such that from the start of the switch to the engaged condition onward, the rotation speed decreases from the operation permission rotation speed to an engagement rotation speed with the motor generator in the engaged condition; and controlling the locking apparatus such that a decrease rate of the rotation speed when switching from the disengaged condition to the engaged condition in a low torque operation mode is higher than the decrease rate of the rotation speed when switching from the disengaged condition to the engaged condition in a high torque operation mode.

Control apparatus and control method for hybrid vehicle

A vehicular shift control apparatus for a vehicle provided with a parking lock device selectively switched to a locking position in which rotation of wheels of the vehicle is prevented and a non-locking position in which the rotation of the wheels is not prevented, by an operation of an electrically operated actuator, the vehicular shift control apparatus being configured to perform a failure diagnosis to determine whether the actuator is operable or not, the vehicular shift control apparatus includes: the vehicular shift control apparatus permits the operation of the actuator if a supply voltage to the actuator is raised from a value lower than a predetermined threshold supply voltage value to a value not lower than the threshold supply voltage value after a determination that the actuator is inoperable is obtained in the failure diagnosis.

Vehicular shift control apparatus

A control device for a vehicle hydraulic control circuit having a hydraulic switch disposed on a hydraulic control circuit of an automatic transmission, includes: a malfunction detecting portion configured to detect a malfunction of the hydraulic switch; and a malfunction removing portion configured to execute an operation for restoring a contact of the hydraulic switch when a malfunction of the hydraulic switch is detected.

Control device for vehicle hydraulic control circuit

A shift control device is provided for a vehicle of shift-by-wire type having shift operation detecting means electrically detecting a shift operation of a driver, range switching means switching a shift range in response to the shift operation of the driver, failure detecting means detecting a failure in a shift operation detection executed by the shift operation detecting means, and vehicle state detecting means detecting a vehicle state upon detection of the failure in the shift operation detection, the range switching means being switched to a fail-safe mode, when the shift operation detection is recovered from a failed state to a normal state and the range switching means is switched from the fail-safe mode to a normal control mode, a recovery condition for determining switching of the fail-safe mode to the normal control mode being altered depending on the vehicle state.

Shift control device for vehicle

It is provided a vehicle shift control apparatus that electrically controls switchover of a shift range of a transmission based on a position signal corresponding to an operational position in a shift operating device, the vehicle shift control apparatus being capable of storing therein a determination result of whether the position signal is normal or abnormal, the shift range being switched based on the position signal acquired when a vehicle electric power supply is turned on if a memory of the determination result is retained when the vehicle electric power supply is turned on, the shift range not being switched based on the position signal acquired when the vehicle electric power supply is turned on if the memory of the determination result is not retained.

Vehicle shift control apparatus

A control apparatus for a hybrid drive system including a main drive power source, an electric generator, a wheel-side output shaft, a power distributing mechanism for distributing the drive force of the main drive power source to the electric generator, the wheel-side output shaft and an automatic transmission, and an electric motor connected to the wheel-side output shaft through the automatic transmission, the control apparatus including a motor-output limitation control device for implementing an output limitation of the electric motor according to a requirement for the output limitation, and a motor-output limitation inhibiting device to inhibit the output limitation of the electric motor by the motor-output limitation control device, during a shift-up action of the automatic transmission, or a motor-output increasing device to control the electric motor to increase its output so as to offset the output limitation of the electric motor implemented by the motor-output limitation control device according to a requirement for the output limitation during a shift-up action of the automatic transmission.

Control apparatus for hybrid drive system

One embodiment of the present invention provides an anomaly detection apparatus for an automatic transmission, the automatic transmission including an electrically-operated oil pump that is rotationally driven by an electric motor, including: a solenoid that is capable of switching a line pressure of a hydraulic control circuit that controls the automatic transmission between a high pressure and a low pressure; and an oil pressure switch that is turned on or off in response to the line pressure, wherein, in response to an oil pressure command value, whether the oil pressure switch is turned on or off according to the oil pressure command value is determined, and the determination and a load state of the electrically-operated oil pump are compared so as to distinctively determine in which of the solenoid and the oil pressure switch, an anomaly has occurred.

Anomaly detection apparatus for automatic transmission

The technique of the invention is applied to a motor vehicle where an engine and a first motor are linked to a driveshaft via a planetary gear mechanism, a second motor is linked to the driveshaft via a transmission, and a battery is arranged to receive and transmit electric power from and to the first motor and the second motor. In response to a deviation of the charge-discharge state of the battery from an allowable control range set as an allowable charge state range of the battery during an upshift, gear change control of the invention sets a gearshift condition change flag Fto 1 (step S) and sets a value Nhaving a smaller absolute value than a value Nto a target rotation speed change &#x394;Nm* of the second motor (step S). The gear change control then sets a hydraulic pressure command Pb* of a brake Bincluded in the transmission to make an actual rotation speed change &#x394;Nmof the second motor approach to the target rotation speed change &#x394;Nm* (step S). This arrangement reduces a rate of change in rotation speed Nmof the second motor. The reduced rate of change in rotation speed Nmprevents a continuous decrease or a continuous increase in power consumption of the second motor that is caused by, for example, delayed detection, delayed computation, and delayed communication, thus effectively protecting the battery from excessive power input and excessive power output.

Power output apparatus, drive system, and control method of power output apparatus

When there is no malfunction in either drive shaft rotational speed detection portion () or rotating shaft rotational speed detection portion (), control of internal combustion engine (), the power split device (, MG), the electric motor (MG), and the shifting portion () is performed while speed ratio in shifting portion () is changed and an intermittent operation of internal combustion engine () is performed so that a drive power required for drive shaft () is output to shaft (). When a malfunction occurs in drive shaft rotational speed detection portion () or/and rotating shaft rotational speed detection portion (), the control is performed while at least one of change in speed ratio, intermittent operation, and output of drive power required for shaft () to shaft () is limited so that a drive power that approximates required drive power as closely as possible is output to drive shaft ().

Power output apparatus, vehicle including power output apparatus, and control unit and method for power output apparatus

A shock caused due to a change in the direction of torque transferred to an output shaft is reduced. There is provided a control device for a powertrain including a drive power source that transfers torque to an output shaft connected to a wheel of a vehicle, and a rotary electric machine that transfers torque to the output shaft via a transmission. When electric power generation performed using the rotary electric machine is restricted, if torque that decelerates the vehicle is transferred from the drive power source to the output shaft, a control is executed so that torque that does not decelerate the vehicle is transferred from the drive power source to the output shaft, and a shift control over the transmission is executed.

Control device and control method for powertrain, program for implementing the control method, and recording medium containing the program

Growing community of inventors

Nagoya, Japan

Hiroatsu Endo