Aisin Aw Co., Ltd.

Aisin Corporation

Kohei Tsuda

Yoichi Tajima

Tomohiro Onouchi

Takashi Yoshida

Keiichirou Kusabe

Hiroshi Tsutsui

Yomei Hakumura

Eiji Moriyama

Hiroya Ueno

Shoichi Ishida

Tomokazu Ito

Bumpei Nakaya

Nobuaki Inagaki

Shigekazu Hase

Masahiro Asai

Masashi Kito

Yuichi Seki

Yusuke Takahashi

Hirokazu Kobayashi

Hiroaki Kioka

Hideya Kawai

Yasuhiro Matsumura

Norihiro Muto

Yuki Nagano

Nao Katagiri

Yusuke Kitazawa

A distribution differential gear mechanism includes a first rotation element drivingly connected to input member, a second rotation element drivingly connected to output member, and a third rotation element drivingly connected to rotary electric machine. When rotation speed difference between rotation speed of the second and first rotation elements become equal to or less than synchronization threshold due to an increase in rotation speed of output member, control device executes synchronization maintaining control of maintaining rotation speed difference at specified difference rotation that is set to be equal to or less than synchronization threshold, by performing a rotation speed control of rotary electric machine in conjunction with rotation speed of second rotation element and by causing internal combustion engine to output a target torque, and control device executes engagement control of transitioning second engagement device from released state to engagement state while synchronization maintaining control is being executed.

Control device of vehicle drive device

A control device that controls an internal combustion engine, a first rotary electric machine, a first engagement device, and a second engagement device performing first transition control when transition is performed from a first mode to a second mode. The first transition control includes first control, second control, and third control. The first control is control in which the second engagement device that connects and disconnects power transmission between two rotary elements selected from among three rotary elements of a distribution differential gear mechanism is changed from an engaged state to a disengaged state while a third engagement device of a transmission mechanism is maintained in an engaged state. The second control controls a rotational speed of the first rotary element to is changed from a disengaged state to an engaged state and the internal combustion engine is started by using drive power transmitted from the first rotary electric.

Vehicle drive device

A vehicle drive device includes a first drive unit that drives first wheels; a second drive unit that drives second wheels; and a control device. When the state of charge of an electrical storage device is less than a first threshold value and a vehicle speed is less than a second threshold value, the control device performs control such that when the vehicle speed is greater than or equal to zero and required drive power is greater than or equal to zero, the operating mode of the first drive unit is set to a second mode to output the required drive power from the second drive unit, and when the vehicle speed is greater than zero and the required drive power is less than zero, the operating mode of the first drive unit is set to a first mode so the first drive power source can generate electric power.

A control device with an electronic control unit that is configured to perform specific supply control, the specific supply control driving at least one of the rotating electrical machine and the internal combustion engine in a neutral state, and supplying hydraulic pressure to an engagement operating part of a target engagement device with at least one of the rotating electrical machine and the internal combustion engine being driven, the automatic transmission not transmitting power in the neutral state, and the target engagement device being one of the plurality of transmission engagement devices.

Control device

A control device that controls a vehicle drive transfer device in which a speed change device that includes a plurality of engagement devices and that selectively establishes one of a plurality of shift speeds with different speed ratios in accordance with a state of engagement of the plurality of engagement devices is provided in a power transfer path that connects between a drive force source and wheels.

Control device for vehicle drive transfer device

A control device that controls a vehicle drive device in which an input member, an engagement device, a shift input member, a transmission device, and an output member are disposed in this order on a power transmission path connecting an internal combustion engine and wheels, the control device includes an electronic control unit.

A control device for performing start assist control for an internal combustion engine includes: a first start assist processing unit that executes a first start assist process that brings a first engagement device into slip engagement at a first engagement pressure while increasing a torque generated by a rotating electrical machine; and a second start assist processing unit that increases, when the first start assist process fails to start the internal combustion engine, an engagement pressure of the first engagement device to a second engagement pressure higher than the first engagement pressure while increasing the torque generated by the rotating electrical machine. The second start assist processing unit determines the second engagement pressure on the basis of a rotational speed of the internal combustion engine in the first start assist process.

A control device that includes an electronic control unit that is configured to, in a case where a request to start the internal combustion engine is made while a downshift for changing a speed ratio of the speed change device so that the speed ratio after shifting is higher than the speed ratio before shifting is being performed in the electric drive state, perform the first start control after the downshift is completed.

Control device for performing a start control

A control device that includes an electronic control unit that causes a rotational speed of the rotating electric machine to change according to a predetermined first change pattern after the rotational speed of the rotating electric machine changes from a pre-shifting synchronous rotational speed in association with progress of the shifting operation until reaching a first synchronous range that is determined on the basis of a rotational speed of the internal combustion engine, the pre-shifting synchronous rotational speed being the rotational speed of the rotating electric machine in a shift speed established before the shifting operation is started.

Control device for starting an internal combustion engine during a shifting operation

A control device for controlling a vehicle drive system in which a first engagement device, a rotating electric machine, and a second engagement device are provided in a power transfer path connecting an internal combustion engine to wheels and are arranged sequentially from an internal combustion engine side, the control device including an electronic control unit.

A control device for a vehicle driving device which controls the vehicle driving device provided with a particular engagement device, a rotary electric machine, and a transmission apparatus disposed in a power transmission path coupling an internal combustion engine with wheels in order from the internal combustion engine side, wherein the transmission apparatus includes a plurality of engagement devices, and selectively forms a plurality of transmission shift stages different in transmission shift ratio according to a state of engagement of the plurality of engagement devices.

Control device for vehicle driving device

A control device for a vehicle drive apparatus, the vehicle drive apparatus including an output shaft connected to an engine; an input shaft connected to a wheel; an electric motor that generates rotational torque of the wheel; and a hydraulic clutch that connects the output shaft to the input shaft when placed in an engaged state, and disconnects the output shaft from the input shaft when placed in a released state.

Control device for vehicle drive apparatus

A control device for a vehicle drive device having a speed change mechanism that attains a predetermined shift speed by engaging multiple engagement elements. The control device predicts an amount of heat generation and determines whether any jumping shift from the current shift speed to the shift speed that is the multiple shift speeds higher or lower than the current shift speed can be permitted or not between the current shift speed and the target shift speed, and if the jumping shift can be permitted, the control unit performs the jumping shift and controls the speed change mechanism so as to shift the shift speed from the current shift speed to the target shift speed.

Control device for vehicle drive device

A vehicle transmission apparatus having a starting engagement friction element, which has friction plates and a hydraulic servo including a piston that is moved according to a supplied oil pressure to press the friction plates, which is controlled to be engaged when a vehicle is started by using at least a driving force of the internal combustion engine, and which transfers creep torque. A control device capable of receiving an accelerator operation amount signal and capable of outputting a command value that controls the oil pressure. The control device executes temporary increase control of temporarily increasing the command value, when the accelerator operation amount signal is turned on from a state where the accelerator operation amount signal is off and the command value is output so that the starting engagement friction element transfers the creep torque.

Vehicle transmission apparatus

A control device for controlling a vehicle driving device provided with a transmission apparatus including a plurality of engagement devices in a power transmission path between a driving force source and a wheel and selectively forming a plurality of transmission shift stages having different transmission shift ratios depending on engagement states of the plurality of engagement devices.

Growing community of inventors

Nishio, Japan

Kohei Tsuda