Systems and methods for an electric drive unit are provided. A transmission system, in one example, includes a higher-lower range clutch assembly positioned downstream of a multi-speed clutch assembly and designed to shift the transmission system between a higher range operating mode and a lower range operating mode. The higher-lower range clutch assembly includes a lower range clutch and a higher range clutch each positioned on one of a first layshaft and an output shaft.

A driving force distribution apparatus distributes and outputs, to a first clutch hub and a second clutch hub, a driving force input from a driving source. The driving force distribution apparatus includes a clutch housing to which a driving force is input, a first multi-disc clutch disposed between the clutch housing and the first clutch hub, and a second multi-disc clutch disposed between the clutch housing and the second clutch hub. A first pressing mechanism that presses the first multi-disc clutch includes an annular pressing portion disposed between a bottom wall portion of the clutch housing and the first multi-disc clutch, legs inserted in insertion holes formed in the bottom wall portion, and a lubricating oil introduction portion that guides lubricating oil supplied from the clearance between the first clutch hub and the bottom wall portion toward the first multi-disc clutch.

A power transmission apparatus includes: an input shaft; a selectable one-way clutch; a housing case; a center support; a lubricating oil reservoir; and an oil passage. The oil passage extends through a pocket plate disposed between the lubricating oil reservoir and a selector plate. The selector plate includes a through-hole. The through-hole is located at a position where the through-hole is not lined up with the opening of the oil passage in a radial direction and a circumferential direction of the selector plate in a non-engagement state of the selectable one-way clutch, and also at a position where the through-hole is lined up with the opening of the oil passage in the radial direction and the circumferential direction of the selector plate in an engagement state of the selectable one-way clutch.

A disconnecting axle includes a housing assembly including a first end cap coupled to a first side of a housing member to define a clutch cavity, and a second end cap coupled to a second side of the housing member to define a differential cavity. The housing member can define a central bore, a sump, and a plurality of passages. The central bore extends axially between the clutch and differential cavities. The sump can be spaced apart from the clutch and differential cavities, and the central bore. A clutch passage couples the clutch cavity to the sump. A differential passage couples the differential cavity to the sump. A first output member of the differential extends axially within the central bore. A piston is configured to compress friction plates to selectively transmit torque. A pump can pump fluid from the sump to the cylinder to move the piston.

A first valve is disposed in an oil passage through which the engaging pressure generated by a linear solenoid valve is supplied to A second brake. The first valve is closed when the second brake is released, so as to close the oil passage, and is opened when the second brake is engaged, so as to open the oil passage. A second valve is disposed in a lubricating oil passage through which lubricating oil is supplied to the second brake, and communicates with the linear solenoid valve. The second valve is opened when the engaging pressure is supplied from the linear solenoid valve, so as to open the lubricating oil passage, and is closed when no engaging pressure is generated by the linear solenoid valve.

The present disclosure relates to a hybrid vehicle and a method of controlling the same. The hybrid vehicle includes a battery configured to store electrical energy, a motor configured to rotate using the electrical energy, a transmission including a first clutch and a second clutch that are connectable to the motor, and a controller configured to control rotation of the motor to cool the transmission when the transmission is determined to be in an overheated state.

A transmission sealed low leak controls system includes a controls system having a first fluid for operation of the controls system provided by a first pump at a first pressure. A transmission input shaft is provided. A planetary gear set is connected to the transmission input shaft by a clutch assembly. A second pump provides a second fluid different from the first fluid for cooling and lubrication of the at least one clutch assembly at a second pressure lower than the first pressure. A torque converter is connected to the transmission input shaft. The second pump further provides the second fluid to the torque converter.

Methods and systems for lubricating a rotating shaft are provided. The lubrication system, in one example, includes a pump coupled to a central lubricant channel, the rotating shaft having a plurality of channels, an air intake channel positioned parallel to an axis of rotation of the rotating shaft, and a first orifice of a first channel of the plurality of channels, where the first orifice is positioned between the air intake channel and the central lubricant channel.

Provided is a shifting control device having a shifting control unit configured to, in a case where, when upshifting which involves switching of a clutch and changing of a shift main gear is performed, a number of revolutions of an input shaft connected to a to-be-engaged clutch is higher than a number of revolutions of the engine, or a case where, when downshifting which involves the switching of the clutch and the changing of the shift main gear is performed, the number of revolutions of the input shaft connected to the to-be-engaged clutch is lower than the number of revolutions of the engine, increase an amount of an hydraulic oil to a maximum lubrication amount during a period of time from when gear disconnecting is completed until the number of revolutions of the input shaft becomes equal to the number of revolutions of the engine.

A cooling assembly for a transmission component includes a housing having one or more walls at least in part defining an internal cavity in which the transmission component is mounted. A coolant passage extends through the one or more walls of the housing. A spray plate is mounted to the housing. The spray plate has one or more openings extending through the spray plate in communication with the coolant passage and configured to disperse coolant from the coolant passage to effect an altered spray pattern exiting from a flow outlet of the coolant passage.