Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Nippon Soken, Inc.

Aisin Corporation

Eiji Ichioka

Kinya Yoshii

Takeharu Koide

Hideto Watanabe

Koichi Tanaka

Kojiro Kuramochi

Makoto Tomita

Kunio Morisawa

Makoto Funahashi

Mitsuhiro Umeyama

Yoshihiko Sasaki

Takashi Shimizu

Masahiro Hasebe

Akiko Nishimine

Takeshi Kitahata

Takemi Tamura

Tetsuo Hori

Naoki Hakamada

Jun Goto

Tsuyoshi Mikami

Shinichi Kojima

Yasuo Shimizu

Taku Harada

Kazunori Uchiyama

Atsuto Ogino

Kota Ishikawa

Yutaka Uchida

Hiroshi Shibata

Kunio Takeda

Fumimori Imaeda

Kazuaki Ishiura

Shingo Uchiyama

Hirokazu Nishimura

Kouichi Sugizaki

A vehicle drive-force transmitting apparatus including: a casing; a drive-force transmitting mechanism disposed in the casing; and first and second oil pumps configured to suck, through respective inlet ports thereof, oil stored in a bottom portion of a casing, such that the drive-force transmitting mechanism is lubricated by the oil pumped up by the first and second oil pumps. The casing is provided with a drain hole through which the oil stored in the bottom portion of the casing is to be discharged to an exterior of the casing. A position of opening of the inlet port of the first oil pump is lower than a position of a lower end of the drain hole, and a position of opening of the inlet port of the second oil pump is higher than the position of the lower end of the drain hole.

Vehicle drive-force transmitting apparatus

A rotation speed of an electric oil pump in the case where an accelerator operation amount falls within a predetermined range is controlled to a rotation speed lower than the rotation speed of the electric oil pump in the case where the accelerator operation amount falls outside the predetermined range. When the range outside the predetermined range of the accelerator operation amount is set to a range in which noise that occurs from a source other than the electric oil pump is large, noise that occurs from the electric oil pump is masked by the noise that occurs from a source other than the electric oil pump and becomes inconspicuous in this range even when the rotation speed of the electric oil pump increases.

Driving system for vehicle

A control apparatus for a hybrid vehicle to permit charging of an electric-energy storage device with an electric energy supplied from an external electric power source provided outside said hybrid vehicle, while said hybrid vehicle is held stationary; and to operate an engine for operating a lubricant supply device to supply a predetermined amount of the lubricant, during charging of said electric-energy storage device by said external electric power source, irrespective of whether a count of said motor running counter has reached a predetermined upper limit, and to reset said motor running counter.

Control apparatus for hybrid vehicle

A hybrid vehicle includes an engine that is an internal combustion engine, a motor generator that is a rotating electric machine used together with the engine for driving the vehicle, an output shaft transmitting power to a wheel, a transmission member coupled to the output shaft, a power split device splitting the output from the engine to the motor generator and transmission member, a detection device detecting irregularities on a road, and a control unit reducing, when the detected result by the detection device indicates generation of periodic torque variation at the output shaft, the output from the engine based on the detected result. Accordingly, a hybrid vehicle that does not require a torque limiter is provided.

Hybrid vehicle

The composite planetary gear apparatus according to the present invention can bring about an advantageous effect to prevent fuel efficiency from being lowered stemming from the increased stirring loss of oil. The apparatus comprises a first planetary gear assemblyhaving a sun gear S, pinion gears P, and a ring gear R, and a second planetary gear assemblyhaving a sun gear S, pinion gears P, and a ring gear R. The ring gears Rand Rsurround the pinion gears Pand Pand are combined together to integrally form a counter drive gear. The counter drive gearis formed with a plurality of through boreseach having an inner end opened at a closed space defined by the first and second planetary gear assembliesand, and an outer end opened at an outer space surrounding the counter drive gear

Composite planetary gear apparatus

When at least one of a condition under which a parking brake is activated, a condition under which a shift lever is shifted to a parking range, a condition under which a shift to the neutral range is executed, and a condition under which a drive termination operation is executed is satisfied during an EV travel mode, a carrier shaft provided coaxially with a crankshaft is rotated by a motor generator, and a cumulative value of a travel distance counter obtained when an engine is stopped is reset.

A shield member () is arranged on the rotor end face () of an electric rotating machine (). As the rotational velocity of a rotor () increases, the shield member () moves outward in the radial direction of a rotating shaft () to cover a part of the opening () of a slot (). The shield member () controls inflow of lubricant from a portion in the axial-direction of the rotating shaft () on the outside of the rotor end face () to the slot (). Rotational resistance of the rotor () caused by stirring of lubricant can be reduced during high velocity rotation of the rotor ().

Electric rotating machine

In the case where a start command of an engine is given with a gearshift lever being operated to a parking position, when a cooling water temperature Tw is lower than a threshold value Twref, and a stop time tst of the engine is a threshold value tstref or longer (Sand S), a relatively large predetermined torque T2 is set to a power-holding torque Tg (S), and the power-holding torque Tg added to a torque for canceling a reaction torque is output from a second motor to motor and start the engine. This allows the engine to be started with a backlash between gears being eliminated even when resistance in motoring the engine is relatively large.

Hybrid vehicle and control method of hybrid vehicle

An oil feeding device which has an oil reserving portionand first oil requiring portionsandprovided in a moving object, and a first oil discharging portionfor feeding an oil reserved in the oil reserving portionto the first oil requiring portions comprises: a regulating memberfor regulating a relative movement of the oil discharged from the first oil discharging portionand the first oil requiring portions in a moving direction of the moving object; a second oil discharging portionfor feeding the oil reserved in the oil reserving portionto the first oil requiring portions. A discharging pressures of the oil at the first oil discharging portionand the second oil discharging portionare changed in accordance with the amount of the oil in the oil reserving portion. Therefore, the reduction of the amount of oil to be fed to the first oil requiring portions can be suppressed even when the speed of the moving object changes.

Oil feeding device

An apparatus for controlling an automotive vehicle having a primary drive power source and an auxiliary drive power source. The apparatus includes a controller adapted to control the auxiliary drive power source such that an assisting drive torque which is generated by the auxiliary drive power source and applied to the vehicle in addition to a primary drive torque generated by the primary drive power source increases with an increase of a required output of the vehicle desired by the vehicle operator, and such that the auxiliary drive power source is operated for a length of time which decreases with the increase of the required output of the vehicle.

Apparatus for controlling automotive vehicle having a plurality of drive power sources

A controller for controlling a hybrid front-and-rear-drive automotive vehicle including a front wheel and a rear wheel an engine, an electric generator operated by the engine, and an electric motor operable with an electric energy generated by the electric generator, and wherein one and the other of the front and rear wheels is driven by the engine and the electric motor, respectively, the controller includes an electric energy storage device, and a cooperative energy supply device for supplying an electric current from the electric energy storage device to the electric motor, concurrently with a supply of an electric energy from the electric generator to the electric motor, to operate the electric motor for driving the other of the front and rear wheels.

Controller for hybrid vehicle wherein one and the other of front and rear wheels are respectively driven by engine and electric motor

A brake controlling apparatus for electric vehicles provided with a transmission between an electric motor and wheels. Regenerative brake control furnishes a regenerative braking force to the vehicle. A transmission control switches a stage of gear of the transmission the basis of driver operation. A friction brake control furnishes a friction braking force to the vehicle by controlling a friction brake. During gear shifting control, the regenerative brake control sets a regenerative torque essentially to zero, and the friction brake control supplements the regenerative braking force that was furnished to the vehicle prior to gear shifting control with the friction braking force. Therefore, there is no drop in deceleration during gear shifting control, even if the driver downshifts during regenerative braking. Smooth gear shifting is then possible.

Brake controlling apparatus for electric vehicle

A drive system for an electric motor vehicle, for transmitting a rotary motion of an electric motor to a drive wheel through a speed reducing device, the system including a clutch device clutch for connection and disconnection between the electric motor and the drive wheel, a shift lever having a drive position and a neutral position, and a clutch operating mechanism which operatively connects the shift lever and the clutch device such that the clutch device is placed in its connecting and disconnecting positions when the shift lever is operated to the drive and neutral positions, respectively.

Electric motorcar drive system having shift-lever operated clutch means

A motor vehicle power transmission system whose rotating elements are all stopped upon stopping of the vehicle, and which comprises a lubricating device including an oil sump for storing a lubricating oil and a mechanically operated oil pump which is driven by one of the rotating elements to deliver the pressurized lubricating oil to predetermined lubricating points such as bevel gears of a differential gear device. The lubricating device has a substantially fluid-tight enclosure in which the lubricating points are disposed and which stores, in a substantially fluid-tight manner, a mass of the lubricating oil delivered from the oil pump.

Vehicle power transmission having fluid-tight enclosure accommodating

A transmission including composite planetary gears supported by a carrier such that the planetary gears are arranged around an axis of the carrier, each planetary gear consisting of a large and a small pinion which mesh with a first and a second gear, respectively, and which have a ratio Zp.sub.1 /Zp.sub.2 equal to an integer not smaller than 2, wherein Zp.sub.1 and Zp.sub.2 represent numbers of teeth of the large and small pinions, respectively. The transmission is assembled by assembling the common second gear and the carrier supporting the planetary gears, such that the small pinion of each composite planetary gear meshes with the common second gear, and assembling the common first gear and the carrier such that the large pinion of each planetary gear supported by the carrier meshes with the common first gear.

Growing community of inventors

Toyota, Japan

Eiji Ichioka