Briefly, the disclosure relates to apparatuses and methods to form a gearbox enclosure comprising an external liner, an internal liner, and a variable porosity region disposed between the external liner and the internal liner. The variable porosity region may be configured to accommodate flow of the lubricant, thereby providing a capability to cool, for example, a lubricating fluid at an elevated temperature.

A distributor with heat dissipation effect has an ignition device having includes a distributor upper cap, a rotor assembly and a distributor bowl-shaped lower cap, a transmission device connected between the distributor bowl-shaped lower cap and the rotor assembly, and a heat insulation pad held between the distributor bowl-shaped lower cap and the transmission device. When the distributor is assembled on an engine, heat from the engine can be effectively isolated and heat from the ignition device can also be dissipates by the heat insulation pad.

A strain wave gearing with a built-in motor is provided with a motor, a wave gear mechanism enclosing the motor coaxially, and a heat-insulation spacing formed therebetween. The wave gear mechanism has a wave generator attached to the motor rotor so as to rotate integrally with the motor rotor. A wave generator plug of the wave generator is fixed to a rotor magnet back yoke of the motor rotor so as to enclose the rotor magnet back yoke. The spacing is formed in a contact surface portion between the rotor magnet back yoke and the wave generator back yoke, whereby heat transfer from the motor to the wave gear mechanism is suppressed.

A system includes a bearing, a lubricant line, a vessel and a sensor. The lubricant line is designed to introduce lubricant from a bearing gap of the bearing into the vessel. The sensor is designed to measure at least one physical variable of lubricant that is situated in the vessel. The vessel includes an outlet or overflow. The system includes a lubricant sump and a device for introducing lubricant from the sump into the bearing gap of the bearing.

A distributor with heat dissipation effect has an ignition device having includes a distributor upper cap, a rotor assembly and a distributor bowl-shaped lower cap, a transmission device connected between the distributor bowl-shaped lower cap and the rotor assembly, and a heat insulation pad held between the distributor bowl-shaped lower cap and the transmission device. When the distributor is assembled on an engine, heat from the engine can be effectively isolated and heat from the ignition device can also be dissipates by the heat insulation pad.

A Power Transfer Unit (PTU) has a housing with at least one side having an outer surface. One or more standoffs are provided at the at least one side of the housing and extend outward from the outer surface of the housing. A thermal deflector formed as a flat plate is attached to the standoffs at a predetermined distance from the outer surface of the housing. The flat plate deflects heat from nearby components, such as the catalytic converter and/or exhaust pipe, away from the PTU.

A transmission for a motor vehicle, including a housing, which at least partly encloses at least one movable transmission part and is filled with an operating medium during a normal operation of the transmission, and including a heating element which dispenses a heat output in order to heat the operating medium. One object is to increase a coupling surface for dispensing a heat output to the operating medium in a simple manner. The heating element is designed to dispense the heat output to the housing via a first coupling surface, and the housing is designed to dispense the heat output to the operating medium via a second coupling surface. The heat output can be transmitted from the heating element to the operating medium in a significantly indirect manner via the housing.

A system includes a bearing, a lubricant line, a vessel and a sensor. The lubricant line is designed to introduce lubricant from a bearing gap of the bearing into the vessel. The sensor is designed to measure at least one physical variable of lubricant that is situated in the vessel. The vessel includes an outlet or overflow. The system includes a lubricant sump and a device for introducing lubricant from the sump into the bearing gap of the bearing.

In a power unit device of a vehicle in which a differential device is arranged on one side of an engine, warming-up of the engine is facilitated while heat convection from an oil pan to a differential housing is inhibited. The power unit device includes a heat insulating member that covers the outer side of an oil pan, and a differential housing that is fitted to and mounted on the oil pan. A fitting portion is provided in the differential housing, and a fitted portion is provided in the oil pan. A fitting face portion of one of the fitting portion and the fitted portion includes, at different positions in the circumferential direction, a plurality of recesses and projections in the radial direction, and is fitted to a fitting face portion of the other of the fitting portion and the fitted portion by the plurality of projections.

A transmission includes a housing made from a metallic material and is provided with a cooling structure in the form of a cooling element made from open-cell metal foam. The cooling element can be secured on the housing, in particular on an outer surface of the housing, by a screw connection and/or adhesive bonding and/or magnetically.