Exhaust insulation systems and methods are described that include multiple layers. In one example, a system includes a base insulation layer covering a portion of an exhaust pipe and a hard outer cover formed from a spirally wrapped knit tape and having a length coextensive with the length of the underlying base insulation layer. The wrapped knit tape outer cover can include successive turns of tape overlapping by 25% to 75%. The knit tape can be impregnated with a thermosetting phenolic resin prior to being wrapped about the pipe.

Methods and systems are provided for a coupling device. In one example, the coupling device may be formed of a composite material and positioned between an exhaust system and a vehicle chassis. The composite material may include aluminum particles dispersed in an elastomer matrix to reduce an overall thermal absorptivity of the composite material.

A substantially metal-free exhaust subsystem includes an exterior housing formed of polymer; and a pipe formed of a layered fibers formed at least partially of glass, and bound by an inorganic binder. The fibers may be glass or ceramic, and may define micro-pores on the interior of the pipe that aid in absorbing acoustic energy, and thereby attenuating exhaust noise.

Methods and systems are provided for a coupling device. In one example, the coupling device may be formed of a composite material and positioned between an exhaust system and a vehicle chassis. The composite material may include aluminum particles dispersed in an elastomer matrix to reduce an overall thermal absorptivity of the composite material.

The disclosure relates to a connector for two fluid systems which are separated from one another in a liquid-tight manner, comprising a housing which has a first end and a second end, a first channel for a first fluid being formed between the first end and the second end, and a second channel for a second fluid being arranged at least partially inside the first channel, the second channel passing coaxially through the second end. In the region of the first channel, the housing has an outlet portion having an outlet opening through which the second channel exits from the first channel.

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.

A device for accommodating a muffler for a two-wheel vehicle, in particular a motorcycle, includes a holder part that can be fastened to a structural component of the two-wheel vehicle. The holder part retains the muffler. A plastic part is used as the holder part.

A substantially metal-free exhaust subsystem includes an exterior housing formed of polymer; and a pipe formed of a layered fibers formed at least partially of glass, and bound by an inorganic binder. The fibers may be glass or ceramic, and may define micro-pores on the interior of the pipe that aid in absorbing acoustic energy, and thereby attenuating exhaust noise.

A vehicle engine exhaust system includes an exhaust component and a non-conductive support member. The exhaust component is supported by a vehicle body via the non-conductive support member. The vehicle body and the exhaust component are positively charged. The vehicle engine exhaust system further includes a self discharge type static electricity eliminator that reduces, in a state where the self discharge type static electricity eliminator is installed on a non-conductive wall surface, an amount of electrification charge on the non-conductive wall surface within a limited area around a location where the self discharge type static electricity eliminator is installed. The self discharge type static electricity eliminator is installed on the non-conductive support member such that static electricity elimination is performed for the exhaust component.

The present disclosure relates to a liquid tank to accommodate liquid for use in a vehicle. The liquid tank may include a liquid tank shell including a concavity formed in the liquid tank shell that is accessible from an outer area of the liquid tank shell; and a heater disposed within the concavity and configured to heat the liquid tank shell.