Toyota Jidosha Kabushiki Kaisha

Makoto Tomita

Eiji Ichioka

Shinichi Kojima

Ryuichi Hasegawa

Ryuji Ibaraki

Hiroaki Kimura

Tetsuo Hori

Koji Hayashi

Hideto Watanabe

Jun Goto

Kiyonori Takagi

Taku Harada

Takafumi Koshida

Sohei Murata

Yoshinori Morita

Shigetsugu Iwata

Fumimori Imaeda

Norihide Tsukiashi

Takahiro Miki

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 lubrication device for a hybrid vehicle power transmission device including a gear member, a first electric motor, and a second electric motor within a transaxle case, the lubrication device includes: a first pipe supplying oil forcibly transferred from an oil pump to the second electric motor; an oil passage branched from the first pipe; a first catch tank supplied with oil from the oil passage; a second pipe connected to the first catch tank to supply oil accumulated in the first catch tank to the first electric motor; an oil flow outlet disposed in the first catch tank and located above the second pipe; and a second catch tank disposed vertically beneath the first catch tank to receive oil outflowing from the oil flow outlet.

Lubrication device of power transmission device for hybrid vehicle

A heat-generating portion cooling structure of vehicle drive apparatus that sufficiently supplies cooling oil to heat-generating portions to enhance efficiency of the vehicle drive apparatus when the heat-generating portions generate maximum heat includes drawing means for drawing oil in a case into a catch tank, and an oil circulation passage for circulating the oil through the catch tank while supplying the oil to first and second heat-generating portions. The oil circulation passage includes a first passage for the oil to flow to the first heat-generating portion when the oil surface in the catch tank is at a first height and a second passage for the oil to flow to the second heat-generating portion when the oil surface is at a second height lower than the first height, and more amount of oil flows to the second heat-generating portion than to the first heat-generating portion when the oil surface is low.

Heat-generating portion cooling structure of vehicle drive apparatus

A vehicle power transmission device having a structure with a carrier of a planetary gear device brought into spline fitting with a case that is a non-rotating member to stop rotating and a ring gear of the planetary gear device rotatably supported by the case via a bearing, is provided with a play reducing device that presses the carrier against the case to reduce a play in thrust direction formed between the carrier and the case.

Vehicle power transmission device

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

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

Growing community of inventors

Nagoya, Japan

Makoto Tomita