Aisin Aw Co., Ltd.

Kabushikikaisha Equos Research

Toyota Jidosha Kabushiki Kaisha

Aisin Aw Kabushiki Kaisha

Kozo Yamaguchi

Masayuki Takenaka

Yoshinori Miyaishi

Shuzo Moroto

Naruhiko Kutsuna

Takeshi Inuzuka

Takeshi Hara

Hiromichi Agata

Shigeo Tuzuki

Kazumasa Tsukamoto

Yutaka Hotta

Mutsumi Kawamoto

Hideki Hisada

Toshio Okoshi

Takahiro Kido

Kenji Gotou

Hiroyuki Kojima

Satoru Wakuta

Kazuhisa Ozaki

Kazuo Aoki

Akira Suzuki

Masashi Hattori

Takao Taniguchi

Masahiro Kojima

Masatoshi Adachi

Shigeki Takami

Kazuma Hasegawa

Ken Iwatsuki

Kenji Omote

Takuji Taniguchi

Takehiko Suzuki

Tomochika Inagaki

Toshihiro Shiimado

Hideki Nakashima

Masaki Nomura

Kazutoshi Motoike

Haruki Takemoto

Tadashi Kondo

Kazuyuki Izawa

Tomohiko Ito

Kunihiro Iwatuki

Toyoji Negi

Koya Maki

Yoshinori Miyaish

Yoshikazu Yamauchi

Kazuma Hasegawe

A drive unit comprises an electric motor, a drive unit casingaccommodating therein the electric motor, an inverterthat controls the electric motor, and a flow passage of a refrigerant that cools the inverter. The inverter defines a space R between it and a heat sinkintegral with a substrate of the inverter, and is mounted to the drive unit casing, the space being communicated to the flow passage of the refrigerant. The heat sink comprises finsthat cross the space R, and abuts against the drive unit casing in a state of low thermal conduction. Thereby, the heat sink is effectively cooled by heat exchange with a cooling refrigerant in wide areas. Also, the fins contact with the drive unit casing in a state of low thermal conduction via a heat insulation material, etc., whereby direct heat conduction is avoided and efficient cooling is enabled while temperature gradient conformed to heat-resistant temperatures of the inverter and the electric motor is maintained.

Drive unit and inverter with cooling technique

A hybrid drive unit includes a three-element planetary gear coupled to two motors, and a reduction planetary gear which is drivingly connected to the three-element planetary gear and switches modes by controlling a clutch and a brake. A three-element direct drive mode is able to be achieved by providing another clutch which couples together any two elements of the reduction planetary gear, and locking up the reduction planetary gear. As a result, motor output is reduced compared with a four-element direct drive mode of related art during high-speed running, and energy recovery efficiency during regeneration can also be improved.

Hybrid drive unit

An output of an internal combustion engine is transmitted to an output shaft by controlling a control motor to change a rotation speed output from the engine without speed steps via power distribution planetary gear. An output of a drive motor is input to the output shaft by changing the speed into two-step decelerated rotation by means of an automatic transmission. The transmission produces a desired torque by decelerating the speed by a large degree when a vehicle speed is low, and produces a desired number of revolutions by decelerating the speed by a small degree when the vehicle speed is high.

Hybrid drive system and vehicle equipped therewith

The invention includes a target-engine-speed acquisition element that acquires a target engine speed necessary to reduce engine speed, thereby stopping the engine at a target stop position; a crank-angle acquisition element that acquires a crank angle indicative of the position of a crankshaft; and a target-engine-speed correction element that corrects the target engine speed according to the acquired crank angle. Because the target engine speed is corrected according to the crank angle, the engine can be stopped at the target stop position even if the friction in the engine, the electric motor, etc. varies, the temperature or viscosity of the lubricating and cooling oils varies, or the vehicle is accelerated or decelerated during the reduction of the engine speed.

Vehicle-drive control system and method and program therefor

A drive device with electronic circuit, including floated wiring for electrically connecting the solid wirings of a circuit to each other and an electronic circuit mechanically connected to an engine, wherein the electronic circuit is formed so that the flat surface thereof including the floated wiring is substantially disposed vertically relative to the output axis of the engine, whereby the vibration of the engine in the major X- and Z-directions can be prevented from applying to the floated wiring in Y-axis direction to increase the seismic resistance of the electronic circuit, and the arrangement of the drive device having the electronic circuit mechanically installed thereon can be realized.

Drive device with electronic circuit

A drive system includes a plurality of electric power devices, a drive case having a plurality of case segments which are connected to each other, each of the electric power devices being contained in one of the case segments, and a plurality of inverters, one for each of the electric power devices. The inverters are collectively attached to one of the case segments, and a flow path of a coolant for cooling the inverters is positioned between the case segment to which the inverters are attached and the inverters. Accordingly, a cooling unit which performs heat insulation and cooling between the drive system and the inverters is positioned only on the outer surface of one of the case segments and does not extend across the connection interfaces between the case segments. Therefore, the risk of leakage of the coolant into the drive case can be substantially eliminated.

Drive system including electric power devices

A hybrid drive unit including a first motor, a first planetary gear and a second motor, wherein the first planetary gear distributes and transmits a drive force transmitted from an input shaft to the first motor and an output shaft, a power output from the output shaft and the second motor are synthesized and the first motor and the first planetary gear are housed in a transmission case with the second motor spaced from the transmission case.

Hybrid drive unit, and front-engine/rear-drive type automobile having the hybrid drive unit mounted thereon

A hybrid vehicle drive apparatus including an electric power generator mechanically connected to the engine, a drive motor driven by at least one of an electric current generated by the electric power generator and an electric current supplied from a battery; a detector that detects a battery state of the battery and a controller that sets a target torque of the drive motor based on the battery state.

Hybrid vehicle drive control apparatus, and control method of hybrid vehicle drive apparatus and program thereof

A drive unit comprises an electric motor, a drive unit casingaccommodating therein the electric motor, an inverterthat controls the electric motor, and a flow passage of a refrigerant that cools the inverter. The inverter is mounted on a heat sinkand mounted to the drive unit casing with a space R defined, and the space is communicated to the flow passage of the refrigerant. The heat sink comprises fins, and the drive unit casing comprises fins, the both fins being apart from each other. Thereby, both a side of the drive unit casing and a side of the heat sink are effectively cooled by heat exchange with a cooling refrigerant in wide areas. Also, the fins are apart from each other whereby direct heat conduction is avoided and efficient cooling is enabled with temperature gradient conformed to heat-resistant temperatures.

Drive device

A drive unit including an electric motor, a drive unit casing accommodating therein the electric motor, an inverter that controls the electric motor and a flow passage in which a refrigerant passes therein in order to cool the inverter, wherein the inverter is mounted on the drive unit casing such that a heat sink, united with a substrate of the inverter, defines a space that is in communication with the flow passage on a portion thereof opposed to the drive unit casing, the space is compartmented by a separator into a first chamber facing the heat sink and a second chamber facing the drive unit casing and the heat sink comprises heat-sink side fins extending into the first chamber and apart from the separator.

A hybrid vehicle includes an engine and a first electric motor mechanically connected to the engine and to a drive wheel. The engine is startable by the first electric motor. The hybrid vehicle further includes: start condition satisfaction determination processing system and method for determining whether a variable that varies corresponding to the rotation of the drive wheel is equal to or greater than a threshold set within a range that does not exceed an upper limit value prescribed by a maximum torque of the first electric motor and a torque of the first electric motor needed to start the engine; and engine start instruction output processing system and method for outputting an engine start instruction if the variable is equal to or greater than the threshold. If the variable is greater than or equal to the threshold, the engine start instruction is outputted, and the engine is immediately started.

Hybrid vehicle and control method thereof

A control apparatus for a vehicle includes an engine, first and second electric motors, an output shaft connected to a drive wheel a differential gear device, the gear elements of which are connected to the engine, the first and second electric motors, and the output shaft, respectively, target output torque setting means for setting target output torque, control torque calculating means for setting a target output torque, and torque control means for controlling a torque in accordance with the control torque. The control torque calculating means includes engine non-rotational state forming means for bringing the engine into a non-rotational state. Since the electric motor torque can be controlled independently, the target output torque can easily be generated, allowing easy generation of a target output torque in the state where the engine is stopped as well as preventing the output torque loss.

Control apparatus and control method for hybrid vehicle

A hybrid vehicle drive controller, to improve driving comfort during running control, that detects the position of the vehicle and road-condition information, calculates a required deceleration, an optimal speed-change stage, and an adjustable torque. The invention includes, transmission to change the vehicle's speed on the basis of the vehicle position, road-condition information and optimal speed-change stage, and a torque control processor for driving a drive motor that generates the adjustable torque. A regenerative torque is calculated and generated on the basis of the required deceleration and the deceleration corresponding to the optimal speed-change stage.

Apparatus, method, and program for drivingly controlling hybrid vehicles

A hybrid vehicle control apparatus, in a vehicle having an engine; a first electric motor and a second electric motor; an output shaft connected to a drive wheel; a differential gear device whose gear elements are connected to the engine, the first and second electric motors, and the output shaft, respectively, has a generated control torque calculation processing device for calculating a control torque generated in association with an electrical control of the second electric motor; an inertia torque calculation processing device for calculating inertia torques; a target control torque calculation processing device for calculating a control torque serving as a target; and a torque control processing device for performing a torque control of the first electric motor in accordance with the control torque serving as the target. As a result, the control torque can be calculated without being affected by inertia torques, so that the drive feeling of the hybrid type vehicle does not deteriorate.

Hybrid vehicle control apparatus and control method

A control apparatus for a vehicle includes an engine, first and second electric motors, an output shaft connected to a drive wheel , a differential gear device, the gear elements of which are connected to the engine, the first and second electric motors, and the output shaft, respectively, target output torque setting means for setting target output torque, control torque calculating means for setting a target output torque, and torque control means for controlling a torque in accordance with the control torque. The control torque calculating means includes engine non-rotational state forming means for bringing the engine into a non-rotational state. Since the electric motor torque can be controlled independently, the target output torque can easily be generated, allowing easy generation of a target output torque in the state where the engine is stopped as well as preventing the output torque loss.

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Anjo, Japan

Kozo Yamaguchi