Aisin Aw Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Other

Kenji Omote

Satoru Wakuta

Shigeo Tsuzuki

Masatoshi Adachi

Takeshi Hara

Kazumasa Tsukamoto

Takeshi Inuzuka

Masahiro Kojima

Satoru Tanaka

Kazutoshi Motoike

Manabu Watanabe

Tomochika Inagaki

Seigo Kano

Atsushi Tabata

Yutaka Taga

Masahiro Hasebe

Takao Taniguchi

Kazuhisa Ozaki

Masaya Amano

Seiji Nakamura

Keiichi Shinohara

Yuji Iwase

Kozo Yamaguchi

Mitsuhiro Umeyama

Kinya Yoshii

Hisanori Nomoto

Shoichi Miyagawa

Kiyotomo Miura

Takahiro Kido

Masato Fujikawa

Yumi Iraha

Masanori Onoda

Norihiro Mae

Yasunori Mano

Shinji Kawakami

Seiji Suzuki

Takao Tanuguchi

Jun Ichiyanagi

A vehicular transmission includes a gear-change mechanism section that shifts power from a driving source and outputs the power to an output shaft; and a hydraulic system that supplies hydraulic pressure from an oil pump to the gear-change mechanism section via a check valve. The check valve includes a cylindrical valve case in which a passage is formed, a valve stored within the valve case so as to be freely movable in an axial direction of the valve case, a valve seat that is formed at one end portion of the passage in the valve case and that closes the passage when the valve sits thereon, a spring for urging the valve so as to sit on the valve seat, and a spring seat fixed on an axially opposite side of the valve seat in the valve case to support the spring.

Vehicular transmission

In setting of an oil temperature increasing process mode, the drive control technique of the invention starts an engine to actuate a mechanical oil pump that pressure feeds a flow of lubricating oil for lubricating the mechanical parts of a transmission and other relevant parts, actuates an electric oil pump that pressure feeds the flow of lubricating oil, and makes a brake Bincluded in the transmission in a semi-engagement state. A motor arranged adjacent to the transmission is then driven with lowered output efficiency. This arrangement effectively accelerates heat generation by the motor and ensures a quick temperature rise of the lubricating oil.

Driving device, motor vehicle equipped with driving device, and control methods of driving device and motor vehicle

A hybrid driving unit () is mounted to a vehicle by coupling a coupling section () at the front end of a casing member () with an internal combustion engine () and by mounting a mounting section () at the rear end of the casing member () to a part () of a body (). Still more, a second electric motor (), i.e., a heavy device, is disposed in the rearmost part among a first electric motor (), a power splitting planetary gear (), the second electric motor () and a transmission disposed on an axis () in the casing member (). Thereby, the vibration occurring in the casing member () is suppressed.

Hybrid drive device and automobile mounted with device

A vehicular drive apparatus includes a case, a first brake having a first friction plate set and a second brake having a second friction plate set wherein the first friction plate set and the second friction plate set are sequentially arranged on a single axis, and a first hydraulic servo arranged to correspond to the first brake and a second hydraulic servo arranged to correspond to the second brake.

Vehicular drive apparatus

A hybrid driving unit in which a first electric motor (), a second electric motor (), a transmission () and a power splitting planetary gear () are disposed in order from the front side (the side of an internal combustion engine) on an axis within a casing member (). Since the first electric motor () and the second electric motor () are disposed adjacently to each other, partial cases for storing these first and second electric motors () and () may be combined, thus facilitating the accommodation for producing the unit in series.

Hybrid driving unit and vehicle carrying the same

A hybrid driving unit () in which a second electric motor () is disposed on the side closer to the front of a vehicle (the side closer to an internal combustion engine ()) than a first electric motor (). A casing member () is formed such that an inner diameter of a part thereof, in which a stator () of the second electric motor () is fixed, is larger than that of a part in which a stator of the first electric motor () is fixed. This allows the second electric motor () to be constructed so as to have a large radial dimension and, to that extent, allows the length thereof in the longitudinal direction to be suppressed. Accordingly, this allows the length of the whole hybrid driving unit () to be shortened.

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

A drive unit for a vehicle structured so as to be able to attain an interrupting state of inertia of a drive motor under a predetermined condition. Therefore, the drive unit for a vehicle has a drive motor able to transmit driving force to a drive wheel, and an operation lever for selecting a shift range for switching the drive motor between drive and non-drive. Further, the drive unit for a vehicle has a control section having a shift position detector for detecting the shift range selected by the operation lever. The drive unit for a vehicle also has brakes for attaining a neutral state by interrupting the power transmission between the drive motor and the drive wheel when the selection of a parking range is detected by the shift position detector.

Drive unit for vehicle

A rotation of an input shaft is accelerated and transmitted to a drive shaft of an oil pump through gears. The oil pump is provided with a lubricant hole and part of the lubricant discharged from a discharge side oil chamber is supplied to a first sliding face of a radial bearing through the lubricant hole. By provision of a cutout portion in an oil sump and a first rib, part of the lubricant supplied from the input shaft to a bearing through a plurality of oil passages and the oil sump is supplied to a second sliding face which rotatably supports a thrust washer.

Lubricating mechanism of oil pump

A hybrid vehicle drive system is designed to have dimensions that are shorter in an axial direction and improved centering accuracy of a rotor, in order to prevent deterioration of motor performance. A rotor support plate () has a flat-plate shaped disk portion (), and is fixed to a front cover () of a take off device (), such as a torque converter, or the like, at the disk portion with a set block () and a bolt (). A forward portion of the take off device is centered and supported by fitting a center piece () to a crankshaft (). A support-plate hub () is in contact with the center piece () at a small area () in a vicinity of a fixing plane P of the disk portion () and the set block (), and thus centering of the rotor () is executed.

Drive device for hybrid vehicle

A motor/generator is arranged radially outward of a middle portion of a front cover of a torque converter so that at least a part of the motor/generator axially overlaps the torque converter, with a predetermined gap (C) between the front cover and the rotor of the motor/generator. The rotor of the motor/generator is supported by either the torque converter or an engine crankshaft or by any two of the torque converter, a motor housing and the crankshaft. The rotor is not affected by the torque converter and the efficiency of the motor is not reduced.

Hybrid vehicle driving device

A hybrid-vehicle drive unit supports a motor-generator with high precision, improving the efficiency of the motor-generator, and reducing the size of the motor-generator, independent of any influence of centering precision of the crank shaft and of deformation of the torque converter. According to the invention, a motor housing is disposed between a converter housing and an internal combustion engine, and a bearing is fitted to a lateral wall provided in a front portion of the motor housing. Rotor supporting members are independently supported by the bearing. Eccentric rotation of the crank shaft resulting from explosive vibrations of the engine is counteracted by two flex plates. Owing to a predetermined clearance, one of the rotor supporting members as a separate component is free from the influence of deformation of the torque converter.

Hybrid-vehicle drive unit

A lubricating apparatus, for a friction engagement element that engages a rotatable member with a case includes a hub connected to the rotatable member, friction members disposed between the hub and the case, a hydraulic servo for engaging the friction members, and an oil passage for supplying lubricant from the case to the friction members. A discharge opening of the oil passage is formed at a position which is radially inward of the friction members and which is axially to a side of the friction members. The discharge opening is directed toward the friction members. A weir member for restricting escape of lubricant in the axial direction through a gap between the hub and the friction members is provided at the other axial side of the friction members. Therefore, the axial escape of lubricant exiting the friction members can be prevented by a non-contact leakage restriction that does not cause drag resistance. The radially outward stream of oil between the friction members is secured, and the friction members can be reliably cooled to remove heat generated by slip control of the friction engagement element.

Friction engagement element with lubrication

To reduce the axial dimension and size of a drive train for a hybrid vehicle, a rotor is supported within a recess formed in the end face of the a crankshaft and is further supported by the front cover of the torque converter. As a result, compared with drive trains which have a fixed member extending from the motor housing to support the rotor, the axial dimension and size of the drive train are reduced.

Drive unit for hybrid vehicle

In a state a vehicle is stopped at an intersection, an infinitely variable transmission is in a neutral position, a motor/generator rotates with a low speed, an oil pump and an auxiliary equipment are in rotating state. At that time, an input clutch is disengaged, and the internal engine is stopped. When the vehicle is started, a continuously variable transmission performs continuous shift control from the neutral position using hydraulic pressure from an oil pump, and the rotation of the motor/generator is transmitted to drive wheels via a ring gear of a planetary gear. After the vehicle has started driving, the input clutch is engaged and the internal engine is started. The vehicle is driven while the motor/generator assists driving or the motor/generator charges batteries based on operation of the internal engine.

Growing community of inventors

Anjo, Japan

Kenji Omote