Abstract: A sound system for a motor vehicle exhaust gas system for emitting emulated engine sounds, including at least one loudspeaker and at least one housing accommodating at least one loudspeaker. The housing is mounted separately from a motor vehicle exhaust gas system in terms of the routing of an exhaust gas flow, at least one sound guidance tube having an outlet zone being mounted on the housing.

Abstract: A sound system for a motor vehicle exhaust gas system for emitting emulated engine sounds, including at least one loudspeaker and at least one housing accommodating at least one loudspeaker. The housing is mounted separately from a motor vehicle exhaust gas system in terms of the routing of an exhaust gas flow, at least one sound guidance tube having an outlet zone being mounted on the housing.

Abstract: A valve adaptable for use in altering fluid flow in an exhaust system of a vehicle has a movable member including a valve disk and an assembly element enabling the valve to be mounted to the exhaust system with the disk located substantially parallel to and facing an open end of a preselected exhaust system conduit. The disk is movable along an axis of the open end to vary fluid flow at the open end.

Abstract: The Invention relates to mufflers with variable damping characteristic for motor vehicles with internal combustion engine, comprising a housing (20) with at least one gas pipe (1), terminating in the housing (20), and at least one valve whose closure element (3) closes the end (2) of the pipe (1) in rest position. The closure element (3) is a disk, seated on a guide rod (4). The guide rod (4) is guided in a guide sleeve (5) and performs a lifting mouvement. The spring (8) is positioned in a valve housing (10) which is gastight and connected in gastight manner to the muffler housing (20).