A transmission system has a housing including a wall and a gear support extending from the wall. The gear support has an outer surface and an inner surface defining a passage. The outer surface includes a seal receiving portion and a seal support axially spaced from the seal receiving portion. A seal is positioned about the gear support at the seal receiving portion. A sleeve is arranged on the outer surface of the gear support between the wall and the seal and a pump drive gear is mounted on the gear support and is supported by the sleeve. The pump drive gear includes an outer toothed surface, an inner surface, and a bushing arranged on the inner surface, the bushing extending about the sleeve.

A transmission system has a housing including a wall and a gear support extending from the wall. The gear support has an outer surface and an inner surface defining a passage. The outer surface includes a seal receiving portion and a seal support axially spaced from the seal receiving portion. A seal is positioned about the gear support at the seal receiving portion. A sleeve is arranged on the outer surface of the gear support between the wall and the seal and a pump drive gear is mounted on the gear support and is supported by the sleeve. The pump drive gear includes an outer toothed surface, an inner surface, and a bushing arranged on the inner surface, the bushing extending about the sleeve.

When a third sun gear is fitted into a fitting hole of a clutch drum, external circumferential spline teeth and internal circumferential spline teeth that configure a spline-fitted part start meshing with each other before a tolerance ring comes into contact with the third sun gear and the clutch drum. Accordingly, the external circumferential spline teeth and the internal circumferential spline teeth mesh with each other, thereby centering the third sun gear and the clutch drum, thus accurately assembling the third sun gear and the clutch drum without causing eccentricity thereof

A transmission includes a main housing having a rear wall and at least one sidewall extending from the rear wall. The rear wall has an outer side and has an inner side that cooperates with the at least one sidewall to define an interior. A planetary gearset is disposed within the interior. An output shaft is coupled to the gearset and extends through a hole defined in the rear wall. An extension housing is connected to a rear portion of the main housing such that the outer side and the extension housing cooperate to define a torque-sensor cavity. The output shaft extends through the cavity. A torque sensor is disposed within the cavity adjacent to the output shaft and has an electrical connector disposed in a wall of the extension housing.

A transmission includes a case, a clutch pack, a piston. The case defines a bore that transitions along a step from a first to a second diameter. The piston is disposed within the bore. The piston has first and second seals that engage the case along the first and second diameters, respectively. The piston defines a chamber that is encompassed by the piston, the case, the first seal, and the second seal. The piston is configured to engage a clutch pack when hydraulic fluid is channeled into the chamber.

Provided a transmission including a first shaft, a second shaft connected thereto via a shift gear mechanism provided to a first shaft and generating a rotary output corresponding to a selected shift gear, a planetary gear mechanism, a transmission case for housing the planetary gear mechanism and a mounting member for fixing a ring gear of the planetary gear mechanism to the case. To the mounting member, an abutment support portion is formed for supporting the case by abutting to an inter-shaft portion positioned between the first shaft and the second shaft in the case.

A shipping strap for a hybrid module includes a first annular surface, a second annular surface, and a central bore. The first annular surface includes a first orifice for receiving a first fastener for fixing the shipping strap to a hybrid module housing, or receiving a dowel pin for radially positioning the shipping strap relative to the hybrid module housing. The second annular surface includes a second orifice for receiving a second fastener for securing the shipping strap to a rotor for an electric machine to axially position the rotor in the hybrid module housing. In some example embodiments, the shipping strap has a through bore aligned with the central bore, and a lifting element installed in the through bore for installing the hybrid module in a multi-speed transmission. In an example embodiment, the lifting element is installed in the through bore by a threaded connection.

A transfer cooling structure of a vehicle is provided, the vehicle including a power source, a transmission, and a transfer device provided with a torque-distribution-control friction clutch, disposed in the order from forward of the vehicle. The structure includes a floor provided to the vehicle and having a tunnel part configured to cover a transmission case of the transmission and a transfer case of the transfer device from above, an insulator attached below the tunnel part to cover the transmission case and the transfer case while having a gap with respect to the transmission case and the transfer case, and a cooling acceleration part provided to the insulator protruding toward the transfer case from the floor side.

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.

An automatic transmission is provided, which 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 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.