A free-floating load ring for assembly into a flexible coupling having a convoluted bellows and a surrounding mesh sleeve, the ring captured by the sleeve at an end of the coupling and spacing the sleeve from the bellows when forces are applied to the coupling. Various rings can be added to existing non-load supporting or flexible couplings having no previous rings. The load ring is retained in place by engagement of coupling components with the ring without physical connection of the ring to any coupling component.

A shielding element, which comprises at least two sections that are embodied to be linearly connected to each other in abutting fashion on at least one contact surface so as to enclose a three-dimensionally shaped profile or pipe segment of an exhaust line of an internal combustion engine over a certain length when in use. In order to modify a shielding element of the above-mentioned type while amplifying its effect with other positive properties, it is proposed for the sections of the shielding element to each comprise at least one electrical heating system, which, in an installed position, is thermally directed at the pipe segment that is to be enclosed.

A muffler structure contains: a body, a first cover unit, and a second cover unit. The body includes an accommodation tube, fiber cotton, and a first mesh portion. The accommodation tube has an accommodating space and an internal fence. The first cover unit includes a manifold connection portion, a first polygonal cap, a hollowly tubular mesh having multiple orifices, a second mesh portion, and a stainless steel mesh. The second cover unit is fixed on a rear end of the accommodation tube of the body opposite to the first cover unit, and the second cover unit includes a second polygonal cap and a silencer. The second polygonal cap is covered on the accommodation tube of the body, and the second polygonal cap has a receiving portion defined in a free end thereof and configured to accommodate the silencer.

A component of an exhaust system for an internal combustion engine. The component comprises an exhaust system structure having an interior through which exhaust gases flow and an exterior, and a thermal insulating wrap for thermally insulating at least a portion of the exterior of the exhaust system structure. The thermal insulating wrap comprises an aqueous mixture comprising an inorganic binder and inorganic filler particles, and a fabric comprising inorganic fibers. The fabric is impregnated with the aqueous mixture so as to form a pliable binder wrap. The pliable binder wrap is wound completely around at least a portion of the exhaust system structure. It can be desirable for the component to further comprise at least one thermal insulator comprising inorganic fibers, where the thermal insulator is disposed between the pliable binder wrap and the exterior of the exhaust system structure.

A secondary air system for an aircraft engine comprises an air flow path communicating between a source of pressurized cooling air and an air consuming component. A filter is disposed in the air flow path upstream from the air consuming component. The filter has at least one of: openings of a size selected for capturing suspended particles; and a filter surface material for binding with chemical contaminants.

A muffler structure contains: a body, a first cover unit, and a second cover unit. The body includes an accommodation tube, fiber cotton, and a first mesh portion. The accommodation tube has an accommodating space and an internal fence. The first cover unit includes a manifold connection portion, a first polygonal cap, a hollowly tubular mesh having multiple orifices, a second mesh portion, and a stainless steel mesh. The second cover unit is fixed on a rear end of the accommodation tube of the body opposite to the first cover unit, and the second cover unit includes a second polygonal cap and a silencer. The second polygonal cap is covered on the accommodation tube of the body, and the second polygonal cap has a receiving portion defined in a free end thereof and configured to accommodate the silencer.

An exhaust insulation system and associate methods are described that include multiple layers. In one example, a system includes a base insulation layer, a polyimide layer at least partially surrounding the base insulation layer, and an outer fabric layer, wherein the fabric is impregnated with a resin.

A vehicle exhaust system component includes an exhaust tube defining an exhaust gas flow path, a side branch tuning tube connected to the exhaust tube at an interface, and a porous structure associated with the exhaust tube to reduce noise generated at the interface. In one example, the porous structure comprises a perforated orifice in the exhaust tube. In another example, the porous structure comprises a mesh screen or mesh sleeve.

A line element includes an inner element, an outer element surrounding the inner element, and a damping element arranged between the inner element and the outer element. The damping element can be made, for example, of knitted wire fabric or a stripwound hose. The damping element can be made in particular of a more easily wearing material than the outer element and/or the inner element, for example of copper.

The exhaust element comprises an outer shell made of a composite material and an inner thermal protection. The inner thermal protection comprises a layer of high temperature insulation material and an inner liner for abrasion protection of the high temperature insulation material. The inner liner is a high temperature resistant textile.