Apparatuses, systems, and methods apply, with a fan, a braking force to a vehicle that includes an axle. The fan is rotated at a first rotational speed based on a rotation of the axle that rotates at a second rotational speed. The first rotational speed is different from the second rotational speed. The fan applies the braking force when the fan rotates at the first rotational speed.

A brake device, configured to be installed directly on a driving axle or through a hub, wherein said device includes a first brake disc joined to the axle sharing rotary motion, a first container disc and a second container disc configured to be moved in the axial direction of said axle. The container discs are positioned on each side of the brake disc, such that both are configured to be moved in the axial direction towards the linings of the first brake disc and to exert a pushing pressure thereon, producing the braking of the brake disc and, therefore, of the driving axle whereon it is assembled. Furthermore, the container discs comprise an inner circuit configured to accommodate the passage of a coolant configured to cool them.

A brake body according to the present disclosure has a coating layer which contains an iron-based amorphous alloy and is formed on a contact surface at which a friction means rubs against the brake body to generate braking force which the brake body is rotated. The coating layer has a low friction coefficient and thus generates less dust during braking. The coating layer also has high corrosion resistance and wear resistance and may thus guarantee high performance and good price competitiveness when applied to a brake base material produced at low cost.

A braking band of a disc brake disc of a ventilated type unusually capable of avoiding vibrations which induce annoying squeals during the braking action. The braking band having two plates joined by connecting elements. At least one of the connecting elements is a fin that has an extension along an outer circumferential width, and an extension along an inner circumferential width. A section taken along a section plane having a radial and circumferential direction, section made by passing through a mean air flow point which runs through a gap, where the outer circumferential width is greater than the inner circumferential width.

An internally ventilated rotor, including at least two disc elements which are interconnected by at least one cooling element, the at least one cooling element having a textile fabric which extends from one disc element contact region of the cooling element, by which the cooling element is in contact with one disc element, as far as into another disc element contact region of the cooling element, by which the cooling element is in contact with another disc element.

An example method includes combining an interlayer and a carbon fiber fabric, wherein the interlayer comprises a highly oriented milled carbon fiber ply comprising a plurality of out-of-plane carbon fibers. The method further includes winding the interlayer and the carbon fiber fabric around a core to form a composite fiber preform comprising a plurality of layers defining an annulus extending along a central axis. The method further includes densifying the composite fiber preform.

A system and method for enhancing a diffusion limited CVI/CVD process is provided. The system may densify a porous structure by flowing a reactant gas around the porous structure. A mass flow controller may be configured to pulse the flow rate of the reactant gas around the porous structure. The mass flow controller may pulse the flow rate from a nominal flow rate to a first flow rate. The mass flow controller may pulse the first flow rate back to the nominal flow rate or to a second flow rate. The mass flow controller may pulse the flow rate between the nominal flow rate, the first flow rate, and the second flow rate, as desired.

A method for monitoring the health of a brake plate having a solenoid with a solenoid air gap includes creating a reference solenoid current profile for the brake plate solenoid air gap, by: calculating a nominal solenoid current profile based on the air gap under nominal conditions, calculating a upper and lower limit of the nominal solenoid current profile, based on an impact of at least one external variation and/or tolerance of the brake plate, and creating the reference solenoid current profile by combining said upper and lower limits into the nominal solenoid current profile. The method also includes generating and measuring a solenoid current curve of the brake plate and determining if said generated curve of the brake plate is between said upper and lower limits to determine that the brake plate is healthy.

A method for monitoring the health of a brake plate having a solenoid with a solenoid air gap includes creating a reference solenoid current profile for the brake plate solenoid air gap, by: calculating a nominal solenoid current profile based on the air gap under nominal conditions, calculating a upper and lower limit of the nominal solenoid current profile, based on an impact of at least one external variation and/or tolerance of the brake plate, and creating the reference solenoid current profile by combining said upper and lower limits into the nominal solenoid current profile. The method also includes generating and measuring a solenoid current curve of the brake plate and determining if said generated curve of the brake plate is between said upper and lower limits to determine that the brake plate is healthy.

A wheel hub for a utility vehicle includes a brake element abutment surface against which a brake element bears in an installed state, and a positive-locking arrangement which interacts in positively locking fashion, as viewed in a direction of rotation, with the brake element in the installed state, and/or a receiving region for a positive-locking arrangement which interacts in positively locking fashion, as viewed in a direction of rotation, with the brake element in the installed state.