Abstract: Dual clutch transmission system, vehicle and method of cooling. A dual clutch transmission system, including coaxial first and second engageable and disengageable torque transmitting assemblies, configured to be installed in a power train of a vehicle, the system including a main flow path for supply of cooling fluid, wherein the main flow path branches into a first flow path for supply of cooling fluid to the first torque transmitting assembly, and a second flow path for supply of cooling fluid to the second torque transmitting assembly, wherein the system includes a third flow path for supplying cooling fluid, which is discharged from the second torque transmitting assembly, to the first torque transmitting assembly, the third flow path preferably being arranged within a space defined by a housing of the dual clutch transmission system.

Abstract: There is provided a shaft assembly for use in a dual clutch transmission system to be installed in a power train of a motor vehicle for selectively coupling three rotating transmission members, wherein the shaft assembly extends along a central axis and comprises: a transmission member comprising a first axial end and a second axial end relative to the central axis, wherein the first axial end is configured to be rotatably connected to a shaft part, a bore extending along the central axis from the first axial end in a direction towards the second end, wherein the bore is open at the first axial end and comprises a closed bore end opposite the first axial end, wherein the bore comprises a stepped closed bore end section in which a diameter of the bore decreases stepwise towards the closed bore end.

Abstract: Dual clutch transmission system, vehicle and method of cooling. A dual clutch transmission system, including coaxial first and second engageable and disengageable torque transmitting assemblies, configured to be installed in a power train of a vehicle, the system including a main flow path for supply of cooling fluid, wherein the main flow path branches into a first flow path for supply of cooling fluid to the first torque transmitting assembly, and a second flow path for supply of cooling fluid to the second torque transmitting assembly, wherein the system includes a third flow path for supplying cooling fluid, which is discharged from the second torque transmitting assembly, to the first torque transmitting assembly, the third flow path preferably being arranged within a space defined by a housing of the dual clutch transmission system.

Abstract: An electric machine and method for cooling an electric machine Abstract There is disclosed an electric machine comprising a rotatable shaft comprising an axial channel with a first diameter D1 for receiving cooling fluid; a rotor, arranged to receive the shaft and to be fixedly connected to the shaft; a stator, arranged for mounting over the rotor; wherein the shaft comprises at least one first radial outlet at a first end, and at least one second radial outlet at a second end for allowing cooling fluid to be supplied towards the stator, wherein the channel has a dam section extending from the first end to the second end of the shaft having a second diameter D2 larger than the first diameter D1.

Abstract: A vehicle propulsion system includes a manual transmission with a transmission housing, a pump inlet positioned near an inside bottom surface of the transmission housing, and a baffle positioned adjacent the pump inlet for directing lubricating fluid in the transmission toward the pump inlet.

Abstract: A transmission oil feeder for a motor vehicle includes an input member defining a rotating shaft. An output member defines a rotating shaft. A gearing arrangement connects the input member to the output member. An oil feeder tube is disposed within a central bore of at least one of the input member or the output member. The oil feeder tube is in communication with a supply of lubricating oil. Multiple apertures are created through a wall of the oil feeder tube at a bottom of the oil feeder tube enhancing gravity flow of the lubricating oil out of the apertures. The apertures are individually prepositioned proximate to one of multiple gear sets of the gearing arrangement. Each of the apertures of the oil feeder tube deliver a portion of the supply of lubricating oil to the one of the multiple gear sets.

Abstract: A transmission oil feeder for a motor vehicle includes an input member defining a rotating shaft. An output member defines a rotating shaft. A gearing arrangement connects the input member to the output member. An oil feeder tube is disposed within a central bore of at least one of the input member or the output member. The oil feeder tube is in communication with a supply of lubricating oil. Multiple apertures are created through a wall of the oil feeder tube at a bottom of the oil feeder tube enhancing gravity flow of the lubricating oil out of the apertures. The apertures are individually prepositioned proximate to one of multiple gear sets of the gearing arrangement. Each of the apertures of the oil feeder tube deliver a portion of the supply of lubricating oil to the one of the multiple gear sets.