Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Kabushiki Kaisha Toyota Jidoshokki

Matsushita Electric Industrial Co., Ltd.

Other

Denso Corporation

Kabushiki Kaisha Toyoda

Jidoshokki Seisakusho

Panasonic Corporation

Yasuharu Odachi

Masaki Takasan

Masahiro Kawaguchi

Taku Adaniya

Katsufumi Tanaka

Norimoto Minoshima

Hirohito Hayashi

Yoichiro Kashiwagi

Ken Suitou

Shoichi Ieoka

Masaki Ota

Kazuya Kimura

Masanori Sonobe

Kazuo Murakami

Kazuhiko Minami

Takeshi Kawata

Yoshitaka Kouketsu

Hiroshi Fukasaku

Hiroshi Murakami

Masao Iguchi

Akinobu Kanai

Kazuhito Miyagawa

Hisakazu Kataoka

Tadashi Kondo

Seiki Sakata

Jiro Iwasa

Takeshi Harasawa

Toshiro Fujii

Tetsuhiko Fukanuma

Kenji Takenaka

Yasushi Yamanaka

Ryo Matsubara

Yoshiyuki Nakane

Takahiro Suzuki

Tomoji Tarutani

Makoto Ito

Tatsushi Mori

Hirotaka Kurakake

Akihiko Yamazaki

Shinichi Okuyama

Yasutake Seki

Shigeo Fukushima

Hideharu Hiwaki

Tomoharu Arai

Takashi Hyogo

Katsuyuki Morita

Akihito Yamanouchi

Osaaki Morino

Sunao Hashimoto

Yoshiaki Ishihara

Daisuke Satoh

Yukio Yoshioka

Yoichi Takashima

Tatsuo Ogawa

Koshiaki Ishihara

Yoichi Saito

Mitsuhiro Mabuchi

A variable displacement compressor for efficiently cooling and lubricating seals arranged on a rotary shaft. The seals are arranged at end portions of the rotary shaft that project from a housing of the compressor. A first lubrication chamber is defined by a first seal in the housing around the front end portion of the rotary shaft. A second lubrication chamber is defined by a second seal in the housing around the rear end portion of the rotary shaft. A shaft passage extends through the rotary shaft to connect the first and second lubrication chambers. Refrigerant gas including lubricating oil flows from a crank chamber to a suction chamber via the first lubrication chamber, the shaft passage, and the second lubrication chamber. This efficiently cools and lubricates the seals.

Variable displacement compressor

A low-vibration/noise brushless motor capable of limiting the height of coil ends, and a low-current-leak hermetic compressor includes the brushless motor. This brushless motor is of a three-phase full-pitch-winding type including a stator having coils () inserted in slots in a one coil per one slot manner. Coil ends () of the coils () are arranged such that the first coil () is arranged outside the second and third coils () in a place (A) where the second and third coils () are inserted in a pair of slots adjacent to each other, the second coil () is arranged from inside of the first coil () to outside of the third coil () in a place (B) where the first and third coils are inserted in another pair of slots adjacent, and the third coil () is arranged inside the first and second coils () in a place (C) where the first and second coils () are inserted in still another pair of adjacent slots. The coil ends () are shaped in the axial direction.

Brushless motor and hermetic compressor assembly including the same motor

When an electric compressor is activated, initial current data is selected by a selector, and a motor is driven with the torque corresponding to the initial current data. When the motor is driven by a &#xbd; turn, the selector selects current difference data. The current difference data corresponds to an instructed speed. After the switch of the selector, the motor is driven to rotate at the instructed speed.

Electric compressor and control method therefor

To provide a motor which can suppress vibration and noise during an operation of a concentrated winding motor and can achieve low vibration and low noise with high efficiency. Skew is formed on at least one of a stator () provided with concentrated windings and a rotor (), and the windings () of different phases in a groove () for windings are brought into contact with each other directly or via an insulating material.

Motor

A non-contact electric power supply system for a rail-guided vehicle includes a main line having fixed rails for guiding the vehicle. A movable rail body is provided for changing the course of the vehicle moving along the main line. A first high frequency power supply apparatus supplies electric power to the main line along an electric feed line. A second high frequency power supply apparatus supplies electric power to the movable rail body along an electric feed line. Portions of the electric feed line on the movable rail body may be fixed in place.

Non-contact electric power supply system for a rail-guided vehicle

In a multi-output power conversion circuit which drives a polyphase AC motor and another device but the polyphase AC motor using a DC power source, a transformer is connected to the neutral point of the polyphase AC motor, an AC voltage at a zero-phase voltage frequency is obtained from the transformer, and the other device is loaded with the AC voltage.

Multi-output power conversion circuit

A compressor includes a housing, a rotary shaft, a pulley, an electric motor, a pulley one-way clutch, and a motor one-way clutch. The shaft is rotatably supported by the housing. The pulley is operably connected to the shaft and includes a power transmission portion. When power is transmitted from a vehicular engine to the power transmission portion, the pulley is rotated. The electric motor rotates the shaft and includes a rotor, which is operably connected to the shaft. At least part of the electric motor overlaps the power transmission portion in the axial direction of the shaft. The pulley one-way clutch is located between the pulley and the shaft and selectively permits and prevents power transmission between the pulley and the shaft. The motor one-way clutch is located between the rotor and the shaft and selectively permits and prevents power transmission between the rotor and the shaft.

Hybrid power transmission system having first and second clutch mechanisms

An air conditioner for air conditioning the interior of a compartment includes a compressor and an electric motor. The compressor compresses refrigerant gas and changes the displacement. The electric motor drives the compressor. A motor controller rotates the motor at a constant reference speed. A detection device detects information related to the thermal load on the air conditioner. A current sensor detects the value of current supplied to the electric motor. A controller controls the compressor based on the detected thermal load information and the detected current value. The controller computes a target torque of the compressor based on the thermal load information. In accordance with the computed target torque, the controller computes a target current value to be supplied to the electric motor. The controller further controls the displacement of the compressor such that the detected current value matches the target current value.

Air conditioner

The present invention provides a rotating apparatus. The rotating apparatus includes a rotor and a motor generator. The rotor includes a belt holder on its outer circumferential surface. The belt holder transmits power between an engine and the rotor. The motor generator is accommodated in and operably connected to the rotor. The motor generator selectively functions as at least one of a motor and a generator. The motor generator is arranged inside the belt holder such that the motor generator is surrounded by the belt holder.

Rotating apparatus

Scroll compressors ( ) may include a housing ( ) having an inlet port ( ) and an outlet port ( ). A drive scroll ( ) may be rotatably disposed within the housing and may have a rotational axis. A driven scroll ( ) may be rotatably disposed within the housing and may have a rotational axis. The driven scroll rotational axis preferably is offset to the drive scroll rotational axis. Further, at least one compression chamber ( ) is preferably defined between the drive scroll and the driven scroll. A first bearing ( ) may rotatably support the drive scroll in a cantilever manner and a second bearing ( ) may rotatably support the driven scroll in a cantilever manner. A transmission ( and ) or other device may be provided to rotate the drive scroll in synchronism with the driven scroll.

Scroll compressors

An inverter includes a plurality of transistors, generates a 3-phase AC voltage, and supplies it to a 3-phase AC motor. The voltage on the primary side of a transformer connected to the neutral point of the 3-phase AC motor is controlled by changing the phase difference of a drive signal of each phase supplied to the inverter through a phase difference circuit. Thus, the output voltage of the transformer can be set to a desired value by a power supply circuit with a simple configuration.

Power supply apparatus

A mechanical rotational device includes a housing. An end portion of a rotary shaft protrudes from a front wall of the housing. An electric rotational device is coaxial with the rotary shaft and is coupled to the end portion of the rotary shaft. The electric rotational device functions as at least one of a motor and a generator. A rotational member is coupled to the rotary shaft and has a power transmitting mechanism for transmitting power between the rotational unit and an external device. A one-way clutch is located in the power transmitting path between the rotary shaft and rotational member. The one-way clutch is located inward of the rotational member. The electric rotational device is located on or forward of the housing. At least part of the electric rotational device is located outward of the power transmitting mechanism.

Rotational unit

A speed control unit computes a instructed current based on an error between a instructed speed and an estimated speed. A current control unit outputs a reference voltage corresponding to an error between the instructed current and a detected motor current. By adding estimated speed electromotive force to the reference voltage, a motor-applied voltage is generated and a synchronous motor is driven. An estimation unit computes the estimated position, estimated speed, and estimated speed electromotive force of the synchronous motor. By supplying a motor current of a predetermined pattern when the synchronous motor begins to be driven, the rotor of the synchronous motor is set in a default position. The default position is used as an initial value of an estimated position.

Motor Apparatus and control method therefor

An air-conditioning system for a vehicle, including a refrigerant circuit and an engine, has a battery, a compressor, an electric motor and a load torque control mechanism. The battery supplies electric power. The compressor is operative to compress refrigerant gas for the air-conditioning system. The electric motor is electrically connected to the battery. The motor is driven due to the electric power, and is operatively coupled to drive the compressor when the motor is energized. The load torque control mechanism responsive to the operating condition of the engine to control the load torque of the compressor below a predetermined value during times when the motor is driving the compressor.

Air-conditioning system for vehicle and its control method

An air-conditioning system for a vehicle including a refrigerant circuit and an engine, has a compressor in the refrigerant circuit, a battery, an electric motor and a mechanism operative to controllably connect and disconnect a power transmitting path between the engine and the motor. The motor is connected to drive the compressor when energized by the battery. A first controller is operative to control the electric power supplied to the motor from the battery. A capacity control mechanism is responsive to the controller to maintain the discharge capacity of the compressor below a predetermined value upon starting the engine by the motor.

Growing community of inventors

Kariya, Japan

Yasuharu Odachi