A method of controlling a drive train comprising an electric motor (12), a gearbox (1) and an internal combustion engine (13). The gearbox (1) is placed between the electric motor (12) and the internal combustion engine (13) in the drive train. The speed of the electric motor (12) is synchronized to the speed of the internal combustion engine (13) in order to shift the gearbox. The gearbox (1) is shifted between different operation modes by means of controlling the position of a dog clutch (6).

The disclosure provides rotary machines that include, in one embodiment, a rotatable shaft defining a central axis A, the shaft having a first end and a second end. The shaft can have a first hub disposed thereon with a plurality of cavities. At least one contour is slidably received into an arcuate cavity in an exterior surface of the hub. The contour has a convex outer surface that cooperates with an inwardly facing curved surface of a housing to form a working volume.

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.

An electric beam axle for use in an electric or hybrid motor vehicle includes a valve positioned between a differential case and an axle tube. The valve includes a valve housing with a fluid flow path extending through the valve housing, and a valve member positioned within the fluid flow path of the valve housing. The valve can also include a stop coupled to the valve housing, the stop being configured to retain the valve member within the fluid flow path of the valve housing. The valve member is configured to prevent fluid from flowing through the fluid flow path and into the axle tube of the electric beam axle when the electric or hybrid motor vehicle is driving across steep road grades and/or under lateral acceleration (cornering) events.

A baffle plate for a differential device disposed inside a differential case, includes a baffle plate main member made of synthetic resin and adapted to be disposed on one lateral side of a ring gear in the differential device; and an elastically deformable seal member attached to an outer peripheral edge portion of the baffle plate main member and adapted to contact a bottom wall portion of the differential case.

A transmission for a wind turbine has a planetary gearset with a fixed sealing surface and at least one cavity. The gearset includes a rotating planetary carrier or a rotating ring gear. The cavity is fixed relative to the carrier or ring gear and has at least one opening. The transmission has an oil reservoir. The carrier or ring gear can rotate to at least three positions. By rotating, the carrier or ring gear can move from the first to the second position and from the second to the third position. In the first position of the carrier or ring gear, oil can flow from the oil reservoir through the opening into the cavity and in the third position the oil can flow through the opening out of the cavity. In the second position of the carrier or ring gear the opening is closed by the sealing surface.

A baffle plate for a differential device disposed inside a differential case, includes a baffle plate main member made of synthetic resin and adapted to be disposed on one lateral side of a ring gear in the differential device; and an elastically deformable seal member attached to an outer peripheral edge portion of the baffle plate main member and adapted to contact a bottom wall portion of the differential case.

A strain-wave gearing, in particular for an industrial robot, includes a first assembly, to which a flexible gearing element provided with an external toothing and formed as a flanged bushing is fastened, and a wave generator, intended to deform the flexible gearing element, and an output-side assembly which has an internal toothing meshing with the external toothing of the flexible gearing element. The output-side assembly is mounted in the first assembly by means of a rolling bearing, the rolling bearing being sealed towards both sides in each case by a seal that is effective between the first assembly and the output-side assembly, and one of these two seals delimiting, on its side facing away from the rolling bearing, a lubricant chamber which extends as far as the toothing of the flexible gearing element and of the output-side assembly.

Various embodiments of the teachings herein include a gearbox adapter. For example, some embodiments include an adapter body with an internal cavity, a first end having a gearbox connection structure connecting the adapter body to a gearbox body, a first shaft hole in an end face of the first end providing communication between the internal cavity and an outside of the adapter body, and a second end having an opening in communication with the internal cavity; a transmission shaft configured to extend from the outside into the internal cavity via the opening and then out of the adapter body through the first shaft hole; an opening cover with a second shaft hole, the opening cover fitted at the second end to block the opening but allow the transmission shaft to pass out of the internal cavity through the second shaft hole; and a rotating bearing arranged in the internal cavity and fitted to the transmission shaft to support the transmission shaft.

The disclosure provides rotary machines that include, in one embodiment, a rotatable shaft defining a central axis A, the shaft having a first end and a second end. The shaft can have a first hub disposed thereon with a plurality of cavities. At least one contour is slidably received into an arcuate cavity in an exterior surface of the hub. The contour has a convex outer surface that cooperates with an inwardly facing curved surface of a housing to form a working volume.