An electromagnetic retarder rotor (1) for a vehicle, includes: an armature (2) having an inner surface (4); an end (5) having an inner surface that faces the inner surface (4) of the armature (2) and is at a distance therefrom, the end (5) being secured to the armature (2); a ring (13) for coaxial attachment to the armature (2); and an arm (15) defined between an upper edge and a lower edge and having a first end portion secured to the inner surface (7) of the end (5), on the lower edge, and a second end portion secured to the attachment ring (13), the upper edge of the arm (15) being at a distance from the inner surface of the armature (2) over the entire radial dimension of the arm (15).

A fluid cooled vehicle brake includes a fluid flow passage disposed in fluid communication with a brake shoe rim carrying a layer of friction material. A pair of spaced support webs are coupled to an inner surface of an annular inner surface of the rib. A water jacket is sealingly joined to the pair of webs and the inner surface of the rim to form a fluid flow passage between an inlet port formed in one of the support webs along the inner surface of the rim and out through an outlet port formed in one of the support webs. High thermal conductive members may be disposed within the layer of friction material to conduct heat to the rim. Heat radiator members are mounted within the coolant passageway.

A brake disk includes a circular base body having a circumferential outer brake rim, a friction layer in certain regions on the base body and an adhesion-promoter or functional layer arranged over an entirety of the base body.

Some embodiments are directed to a duct assembly for cooling a brake assembly of a vehicle. The duct assembly can include a hollow inlet section that is disposed at the vehicle sub-frame and configured to capture air from beneath the vehicle sub-frame; and a hollow intermediate section that communicates with the inlet section so as to form a contiguous channel therewith. The intermediate section can be disposed entirely within the vehicle sub-frame. A hollow outlet section can communicate with the intermediate section so as to form a contiguous channel between the inlet, intermediate and outlet sections. The outlet section can be disposed and configured to direct the air captured by the inlet section to the front end of the brake assembly to thereby cool at least a portion of the brake assembly.

In various embodiments, the present disclosure provides wet rotating disc engagement systems, e.g., a wet brake systems and/or wet clutch systems, for mobile platforms and/or stationary platforms, wherein the system comprises a plurality of first heat pipes having evaporator ends disposed within a plurality of first discs of the wet rotating disc engagement system and/or a plurality of second heat pipes having evaporator ends disposed within a plurality of second discs of the wet rotating disc engagement system. Additionally, condenser ends of the first and/or second heat pipes are disposed within oil retained within an oil reservoir of the wet rotating disc engagement system.

A brake rotor assembly can include a structural part having a receiving surface and at least one friction surface parts having a contact surface. The friction surface part can be fixably attached to the receiving surface of the structural part such that the contact surface faces away from the receiving surface of the structural surface to form at least part of an annular braking surface arranged concentrically around an axis of rotation of the structural part.

A braking band of a disc brake disc has two mutually facing plates having inner surfaces, directly or indirectly facing and delimiting a gap, outer surfaces having flat and opposite circumferential portions which form braking surfaces, and plate bodies having predetermined plate thickness. The plates are joined to each other by connecting elements shaped as columns or ribs which project from one plate towards an opposite plate in the form of bridges which connect the plates. At least one of the plates has at least one shaped pin projecting from a plate into the gap reaching the opposite plate, forming at least one localized narrowing of the gap and a thickening of the plate body, creating a localized increase of the predetermined plate thickness. At least one shaped pin extends from a first connecting element to an adjacent connecting element, connecting the connecting elements, and along a circumferential direction connecting at least two adjacent connecting elements.

Some embodiments are directed to a duct assembly for cooling a brake assembly of a vehicle. The duct assembly can include a hollow inlet section that is disposed at the vehicle sub-frame and configured to capture air from beneath the vehicle sub-frame; and a hollow intermediate section that communicates with the inlet section so as to form a contiguous channel therewith. The intermediate section can be disposed entirely within the vehicle sub-frame. A hollow outlet section can communicate with the intermediate section so as to form a contiguous channel between the inlet, intermediate and outlet sections. The outlet section can be disposed and configured to direct the air captured by the inlet section to the front end of the brake assembly to thereby cool at least a portion of the brake assembly.

The invention relates to a process for producing a brake disk for a vehicle, in which a friction layer is arranged at least in certain regions on a base body of the brake disk.

A block for wheel brakes comprising a friction portion, in which a friction surface is defined, which, in use, acts upon a peripheral surface of a wheel in order to carry out the braking action, a support plate, which is fixed, in an irreversible manner, to a surface of the friction portion opposite the friction surface, and a base plate, which is fixed to the support plate and comprises a coupling element to fix the block as a whole to a brake system. The block comprises at least one elastic element placed between the support plate and the base plate. The presence of the elastic element creates a ventilation air space between the support plate and the base plate.