Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Other

Kazuyuki Shiiba

Tooru Matsubara

Kenta Kumazaki

Masato Yoshikawa

Takeshi Kitahata

Nobufusa Kobayashi

Kunihiro Iwatsuki

Hiromichi Kimura

Atsushi Tabata

Takahiro Kimura

Shinichi Sasade

Munehiro Katsumata

Kazuomi Okasaka

Daiki Sato

Daisuke Suyama

Koichi Okuda

Tatsuya Imamura

Seiji Kuwahara

Hideo Tomomatsu

Yoshio Ito

Masayuki Baba

Takeshi Kanayama

Jun Goto

Ichiro Kitaori

Koji Sugiyama

Mitsuru Maeda

Toshihiro Fukumasu

Junji Matsushita

Kuniaki Ishii

Shun Sato

Masao Kawai

Toshiki Kanada

Masatoshi Ito

Kiyonori Takagi

Yoshikazu Tanaka

Hiroyuki Sawada

Taiyo Uejima

Tomokazu Inagawa

Atsushi Kawamoto

Taku Harada

Tomoya Matsubara

Teru Konishi

Yoji Takanami

Takeshi Horie

Hidehiko Bansyoya

Isao Satou

Yoshio Hasegawa

Yuji Yasuda

Takashi Ohta

Hiroji Taniguchi

Yasuhiro Hiasa

Shunya Kato

Hiroaki Kiyokami

Yoshiharu Harada

Haruhisa Suzuki

Keita Imai

Yasunari Nakamura

Kenji Uchida

Akira Matsui

Yuki Yamada

Norihiro Yamamura

Masaki Yoshida

Hiroki Takeda

Atsushi Kayukawa

Hidehiko Banshoya

Hiromasa Tatsushiro

Tsuyoshi Fujikane

Hisashi Ishihara

Katsutoshi Shimizu

Hideharu Nohara

Hiromitsu Metsugi

Kazuhiro Iketomi

Masayoshi Hoshino

Ichiro Isobe

Kunihiro Iwatuki

Yukihiro Ikeda

Shinya Iizuka

Talyo Uejima

Naoya Usami

Atsushi Yoshimura

Takahiro Kawaguchi

Tomo Atarashi

A hybrid vehicle with an engine and a rotary machine each coupled to a drive wheel in a power transmittable manner, comprises: an electronic control device that makes the rotary machine output a starting-time compensation torque to compensate a drop in a drive torque caused in a starting process of the engine in addition to a running torque when the engine is started while the vehicle is in a running state in which the drive torque is generated by the rotary machine and the engine is in a stopped state. The electronic control device starts the engine such that a starting-time inertia torque that is generated according to starting of the engine and causes the drop in the drive torque is made smaller when a torque margin of the rotary machine which is applied to the starting-time compensation torque is relatively small than when the torque margin is relatively large.

Hybrid vehicle

A control apparatus for a hybrid vehicle that includes an engine serving as a drive force source, an electric motor serving as a drive force source, drive wheels, a storage battery for supplying and receiving an electric power to and from the electric motor, a transmission mechanism for transmitting a drive force supplied from each of the drive force sources toward the drive wheels. During running of the hybrid vehicle by a drive force of the electric motor with the engine being stopped, the control apparatus is configured to determine whether the engine is to be started. When determining that the engine is to be started during the running of the hybrid vehicle, the control apparatus is configured to cause a gear ratio of the transmission mechanism to be changed and to cause the engine to be started after the gear ratio of the transmission mechanism has been changed.

Control apparatus for hybrid vehicle

A vehicle control apparatus selects one of a power-on control and a power-off control for execution of a shift-down action in a transmission of a vehicle, and implements the selected power-on or power-off control. When a running speed of the vehicle is not lower than a predetermined value, the control apparatus selects one of the power-on control and the power-off control, based on a target input torque that is to be inputted to the transmission. When the vehicle running speed is lower than the predetermined value, the control apparatus selects one of the power-on control and the power-off control, based on an actual input torque that is actually inputted to the transmission.

Vehicle control apparatus

A shifting control apparatus includes an overall-speed-position shifting control portion including: a synchronous shifting control portion to implement a synchronous control of shifting actions of the vehicular automatic transmission and the step-variable transmission portion to respective target ones of the overall speed positions and the gear positions, such that a moment of generation of a command to establish the target overall speed position is delayed with respect to a moment of generation of a command to establish the target gear position, so that the shifting actions take place in synchronization with each other, irrespective of different control response times of the shifting actions; and a multiple-step shifting control portion to command the synchronous shifting control portion such that the vehicular automatic transmission performs a shift-up action from a present one of the overall speed position to the target overall speed position through at least one intermediate overall speed position intermediate.

Shifting control apparatus for vehicular automatic transmission

A control apparatus is provided for a vehicle that includes (i) an engine serving as a drive power source, (ii) a motor/generator serving as the drive power source and (iii) a mechanically-operated transmission mechanism that constitutes a part of a power transmitting path between the drive power source and drive wheels of the vehicle. The control apparatus includes a shift control portion is configured, when an input torque inputted to the mechanically-operated transmission mechanism is to be controlled in process of a coasting shift-down action executed in the mechanically-operated transmission mechanism, to determine an upper limit value of the input torque inputted to the mechanically-operated transmission mechanism in the process of the coasting shift-down action, such that the determined upper limit value is lower during operation of the engine than during stop of the engine.

A vehicle drive device that includes a case forming a first accommodating space that accommodates a speed change device and a second accommodating space that accommodates a rotary electric machine; an storage that is disposed under the first accommodating space and stores oil; a hydraulic pump including a suction that suctions the oil from the oil storage; a first oil passage that supplies the oil discharged by the hydraulic pump to the speed change device as hydraulic oil; a second oil passage that supplies the oil discharged by the hydraulic pump to the rotary electric machine as cooling oil; and a third oil passage that returns the oil supplied to the rotary electric machine, from the second accommodating space to the oil storage, by allowing the oil to flow in a direction from the second accommodating space toward the first accommodating space.

Vehicle drive device

A vehicle control apparatus includes: a state determining portion configured to determine whether an engine is in a first operational state corresponding to a normal operation state or a second operational state corresponding to an engine stop state in which the engine is stopped and/or a catalyst warming-up state in which the engine is operated to warm up a catalyst; and a shift control portion configured, in process of a shifting action of a transmission mechanism, to control at least an engaging pressure of an engaging coupling device as one of a plurality of coupling devices of the transmission mechanism, which is to be placed in an engaged state upon completion of the shifting action, such that the engaging pressure of the engaging coupling device is controlled to be lower when the engine is in the second operational state, than when the engine is in the first operational state.

A control apparatus () for a vehicular drive system () having a step-variable transmission portion () which is shifted to a selected one of speed positions having respective speed ratio values, with engaging and releasing actions of coupling devices (B, C), and a drive power source portion () operatively connected to an input shaft () of the step-variable transmission portion, the control apparatus being configured to implement a speed synchronizing control upon a shift-down action of the step-variable transmission portion in a coasting run of a vehicle (), wherein an input shaft speed of the step-variable transmission portion is raised with an input shaft torque transmitted from the drive power source portion to the input shaft, from a pre-shift-down synchronizing speed to a post-shift-down synchronizing speed. The control apparatus includes a torque control portion () configured to change the input shaft torque transmitted from the drive power source portion () to the input shaft () during the speed synchronizing control, on the basis of a temperature of a lubricant in the step-variable transmission portion such that the input shaft torque is larger when the lubricant temperature is comparatively low than when the temperature is comparatively high.

Control apparatus for vehicular drive system

A control apparatus for a vehicle includes a control portion configured to control an input torque to an automatic transmission such that a value representing a rotating state of an input rotary member of the automatic transmission coincides with a target value; a racing determining portion configured to determine whether a rotating speed of an engine is predicted to exceed a predetermined rotating speed when control is provided such that the value representing the rotating state of the input rotary member of the automatic transmission coincides with the target value during a power-on shift-down action of the automatic transmission; and an output limiting portion configured to limit the output torque of the engine to a predetermined torque or less if the rotating speed of the engine is predicted to exceed the predetermined rotating speed during the power-on shift-down action of the automatic transmission.

A control apparatus for a vehicle provided with a step-variable transmission including a one-way clutch to be placed in an engaged state to establish a predetermined one of gear positions of the step-variable transmission, and a coupling device disposed parallel with the one-way clutch, includes a control portion configured to control a shift-up action of the step-variable transmission from the above-indicated predetermined one gear position in which the coupling device is placed in its engaged state, the control portion controlling the shift-up action so as to delay a releasing action of the coupling device where a required torque of the vehicle prior to a moment of initiation of an inertia phase of the shift-up action is larger than a predetermined value, with respect to the releasing action where the required torque is not larger than the predetermined value.

A control apparatus for a hybrid vehicle, having an engine, an electric motor, and an automatic transmission which is placed in a selected speed position with engagement of selected at least one of coupling devices, includes: an input torque control portion controlling the electric motor for controlling an input torque transmitted to the automatic transmission during a shifting action of the automatic transmission, based on output torque of the engine and torque transmitted through the coupling devices, such that a value representing a rotating state of an automatic transmission input rotary member coincides with a target value. The input torque control portion controls the input torque to be not smaller than a predetermined lower limit, when a running state of the hybrid vehicle is switched from a power-on state to a power-off state during a shift-down action of the automatic transmission in the power-on state.

A control apparatus for a vehicle having an electric motor, and a step-variable transmission selectively placed in a speed position with engagement of a coupling device, wherein the vehicle runs rearward with a reverse drive torque of the electric motor generated in a forward-drive low-speed position of the transmission, is provided. The control apparatus includes: a first shift control portion temporarily increasing an input torque of the transmission to raise its input speed toward a synchronizing speed in the low-speed position, and commands an engaging-side coupling device to be brought into its engaged state after the input speed has been raised to a predetermined value; and a second shift control portion increasing an engaging force of the engaging-side coupling device to bring the engaging-side coupling device into the engaged state.

A control apparatus for a vehicle provided with a motor/generator functioning as a drive power source, and a mechanically operated transmission mechanism which constitutes a part of a power transmitting path between the motor/generator and drive wheels, the control apparatus including a motor/generator control portion configured to implement a regenerative torque control of the motor/generator so as to generate a regenerative torque according to a braking operation by an operator of the vehicle in a decelerating run of the vehicle, and a transmission shifting control portion configured to initiate a shift-down action of the mechanically operated transmission mechanism after a rate of change of the regenerative torque has been held within a predetermined range for at least a predetermined length of time, where a determination to implement the shift-down action is made in the process of the regenerative torque control of the motor/generator according to the braking operation.

A control apparatus () for a vehicle provided with a motor/generator (MG; MG) functioning as a drive power source, and a step-variable transmission () which constitutes a part of a power transmitting path between the drive power source and drive wheels () and which is placed in a selected one of a plurality of speed positions with engagement of a selected one or ones of a plurality of coupling devices (CB). The control apparatus includes: a torque control portion () configured to control an output torque (Ti) of the drive power source (MG) during a shifting action of the step-variable transmission () from one of the speed positions to another of the speed positions, on the basis of a required vehicle drive torque (Tidem) corresponding to an operation amount (&#x3b8;acc) of an accelerator pedal, such that a value representing a state of a rotary motion of an input rotary member () of the step-variable transmission coincides with a target value; and a torque limiting portion () configured to limit the required vehicle drive torque to a predetermined lower limit value (Tif) in the process of a shift-up action of the step-variable transmission which is performed by placement of the accelerator pedal in an operated position.

A control apparatus for a hybrid vehicle provided with an engine, a differential mechanism having a first rotary element to which the engine is operatively connected, a second rotary element to which a first motor/generator is operatively connected, and a third rotary element to which an intermediate power transmitting member is connected, a second motor/generator operatively connected to the intermediate power transmitting member, and an automatic transmission which constitutes a part of a power transmitting path between the intermediate power transmitting member and drive wheels and in which a shifting action is performed by selective engagement of a plurality of coupling devices, the control apparatus comprising: a hybrid control portion for controlling an output torque of the first motor/generator and an output torque of the second motor/generator during the shifting action of the automatic transmission on the basis of an output torque of the engine and a transmitted torque of the coupling devices, such that an angular acceleration value of the second motor/generator and an angular acceleration value of the engine coincide with respective target values; a limited state determining portion for determining whether the output torque of the first motor/generator is in a limited state of being limited lower than a predetermined load capable of ensuring a shift-progressing torque necessary for progress of a power-on shift-down action of the automatic transmission; and an output limiting portion for limiting the output torque of the engine to a predetermined torque or less if the output torque of the first motor/generator is in the limited state during the power-on shift-down action of the automatic transmission.

Growing community of inventors

Miyoshi, Japan

Kazuyuki Shiiba