The flywheel device includes a sealed housing section; a rotor located in the sealed housing section where the rotor is held in a vertical position by a magnetic system; a controller coupled to the magnetic system; and a braking annular ring mounted to the sealed housing section below the rotor, where the rotor contacts the braking annular ring when the rotor is lowered or otherwise dropped from the vertical position. The controller performs operations to provide control signals to provide first power to the magnetic system to hold the rotor in the vertical position and provide second control signals to provide second power to the magnetic system to lower the rotor.

There is provided a heatsink for a brake calliper. The heatsink includes a hollow base and an intermediate material provided in the hollow base.

A method of cooling an aircraft brake including a brake pack and a reservoir in the form of a removable cartridge containing a coolant. The method includes vaporizing the coolant using heat energy from the brake pack.

An aircraft wheel including a rim fitted with rotor disks driven in rotation with the rim by first splines secured to the rim and engaged in notches in the rotor disks, stator disks interposed between the rotor disks and provided with notches engaged on second splines secured to a brake torque tube arranged to be fastened to an axle carrying the aircraft wheel, one or more heatpipe extending in one or more of the first and second splines parallel to a plane containing an axis of rotation of the wheel, the heatpipe having an end projecting outside the aircraft wheel, and one or more heatsinks secured to the end of the heatpipe.

A pressure plate for a friction coupling such as a clutch or brake system includes one or more pockets with a phase change material disposed therein. The phase change material operates to absorb and release heat when the friction coupling cycles between activation and deactivation so as to minimize a maximum temperature of the pressure plate.

A brake disc, in particular for a motor vehicle, includes a base disc of a first material and a wear-reducing coating of a second material. The first material is a lightweight metal and the second material is an oxide layer.

A clutch assembly, a torque converter clutch assembly, and a brake assembly for a vehicle are disclosed. The clutch assembly and the brake assembly may have at least one reaction plate comprising an internal cavity containing a phase change material. The torque converter clutch assembly may have a front cover plate comprising an internal cavity containing a phase change material. The phase change material may be capable of absorbing at least some friction-induced heat generated at a friction interface of the reaction plate or front cover plate when the clutch assembly, the torque converter assembly, or the torque converter assembly is shifted to a closed position, such as when the clutch is activated or when the brakes are applied.

The invention relates to a vehicle wheel brake, comprising a material that is configured to evaporate when operating the vehicle wheel brake, and relates to a brake component for a vehicle wheel brake, wherein the brake component comprises a material that is configured to evaporate when operating the vehicle wheel brake, the brake component being one of a brake caliper housing, a brake pad carrier, a brake pad, or an electronic brake actuator, in particular a parking brake actuator.

Road vehicle comprising: a frame provided with a plurality of metal elements interconnected with one another; at least one drive wheel; at least one electric motor connected to the drive wheel; an electronic power converter, which controls the electric motor; and a dissipator device that is connected to the electronic power converter, is configured to dissipate electrical energy and comprises an expendable body that undergoes an endothermic transformation when an electric current flows through it.