An output shaft support structure includes: an output shaft; and a supporting body that supports the output shaft, the output shaft including: a rotating shaft; a first rolling bearing fixed to one end section of the rotating shaft; a second rolling bearing fixed to the other end section of the rotating shaft; and a secondary reduction driven gear including a boss section fixed to the rotating shaft. For a predetermined period, the boss section of the secondary reduction driven gear contacts the second rolling bearing, and a lower end of the rotating shaft is always separated from the supporting body.

An accumulator piston configured to be situated within an accumulator bore of a housing for use in vehicle transmissions. The accumulator piston including a casing, the casing including a top surface, a bottom surface opposite the top surface, and a side wall situated between the top surface and the bottom surface, a pin guide protruding from the top surface of the casing, the pin guide including a centrally disposed aperture, the aperture configured to receive an elongated pin, and a sealing member encircling the side wall of the casing such that the sealing member covers any exposed surface of the side wall.

A dual clutch arrangement for a dual clutch transmission includes a first clutch and a second clutch. The output of the first clutch is connected to the input of the second clutch. A dual clutch transmission arrangement with the dual clutch arrangement and a motor vehicle with the dual clutch arrangement are also provided.

Infinitely variable multi-epicyclic friction transmission system for an electric motor including a main shaft; a motor drum comprising two cylindrically shaped half-drums; a rotor accommodated in a cavity defined by the half-drums, the rotor comprising a rotor carrier driver; a plurality of twin planetary cone assemblies attached to the at least one planetary carrier and disposed circumferentially around the two half-drums, each twin planetary cone assembly comprising: a torque tube and planetary cone-hemisphere structure, each planetary cone-hemisphere structure comprising a planetary cone integral with hemisphere at its apex, wherein the planetary cone-hemisphere structure is configured to roll inside the torque tube via the hemisphere, and wherein the slant height of the planetary cones is parallel to the main shaft; a series of spherical planets and at least one reaction ring disposed around the plurality of planetary cones and configured to slide along the planetary cones to vary a gear ratio.

In a transmission case, a pattern exerting a water repellent effect is provided around a connection portion for a connection with an electrical component. A water passage is provided on an upper surface of an outer peripheral surface of the transmission case. A drain portion is provided on a downstream side of the water passage. The drain portion is a through hole provided in the transmission case, the through hole connecting with the water passage.

In a transmission case, a pattern exerting a water repellent effect is provided around a connection portion for a connection with an electrical component. A water passage is provided on an upper surface of an outer peripheral surface of the transmission case. A drain portion is provided on a downstream side of the water passage. The drain portion is a through hole provided in the transmission case, the through hole connecting with the water passage.

Infinitely variable multi-epicyclic friction transmission system for an electric motor including a main shaft; a motor drum comprising two cylindrically shaped half-drums; a rotor accommodated in a cavity defined by the half-drums, the rotor comprising a rotor carrier driver; a plurality of twin planetary cone assemblies attached to the at least one planetary carrier and disposed circumferentially around the two half-drums, each twin planetary cone assembly comprising: a torque tube and planetary cone-hemisphere structure, each planetary cone-hemisphere structure comprising a planetary cone integral with hemisphere at its apex, wherein the planetary cone-hemisphere structure is configured to roll inside the torque tube via the hemisphere, and wherein the slant height of the planetary cones is parallel to the main shaft; a series of spherical planets and at least one reaction ring disposed around the plurality of planetary cones and configured to slide along the planetary cones to vary a gear ratio.

A cooling system for a vehicle that includes a temperature detection device for detecting a temperature related to a power transmission apparatus. The cooling system includes a cooling fan and an electronic control apparatus including a load limiting portion configured, when the detected exceeds a limit temperature value, to limit a load applied to the power transmission apparatus. The electronic control apparatus is configured to determine whether the detected temperature is equal to or higher than a fan-cooling temperature value that is lower than the limit temperature value, and to control rotation of the cooling fan, such that the cooling fan is rotated when the detected temperature is not lower than the fan-cooling temperature value, and such that a rotational speed of the cooling fan is higher when a temperature of the power transmission apparatus is high, than when the temperature of the power transmission apparatus is low.

A hybrid powertrain for an automobile includes a transmission adapted to provide power to wheels of the automobile, an engine adapted to provide power to an input shaft of the transmission, and an electric motor-generator unit adapted to provide power to the input shaft of the transmission, wherein the electric motor-generator is positioned within the transmission, coaxial with the transmission input shaft, the electric motor-generator being supported by and enclosed within a pump support of the transmission.

An automatic transmission includes a brake including a fixed-side cylindrical member spline-coupled to a transmission case, a rotation-side cylindrical member coupled to a given rotating member, a plurality of friction plates disposed between the fixed-side cylindrical member and the rotation-side cylindrical member, and including a fixed-side friction plate configured to be spline-engaged with the fixed-side cylindrical member and a rotation-side friction plate configured to be spline-engaged with the rotation-side cylindrical member, and a piston configured to engage the plurality of friction plates. The automatic transmission further includes a shock absorbing member disposed between a spline part of the transmission case and a spline part of the fixed-side cylindrical member and configured to absorb impact when the fixed-side cylindrical member rotates relative to the transmission case.