Patent ID: 8734128

Claim:
A silencer device for connection to a piston compressor of a motor vehicle, the silencer device comprises: a housing with an inlet connectable to a suction line or to an air outlet of a piston compressor, and an outlet connectable to an air inlet of a piston compressor or to a compressed air line; a throughflow duct extending through the housing from the inlet to the outlet to allow air to flow from the inlet to the outlet via the throughflow duct, the throughflow duct having a first cross-sectional area; a quarter-wave resonator situated in the housing comprising an elongate resonator duct curved in longitudinal direction, having one end with an inlet aperture situated in a wall of the throughflow duct, the inlet aperture having a second cross-sectional area larger than or equal to the first cross-sectional area of the throughflow duct; another end of the resonator duct being closed; the housing comprises a base element and a cover element fitted to the base element; the resonator duct comprises a channel situated in the base element and having a longitudinal aperture facing towards the cover element; the cover element closing the longitudinal aperture of the channel; and the cover element being fittable to the base element and being provided with a protrusion for being accommodated in the channel in the base element via the longitudinal aperture in the channel to form an endwall which defines the closed other end of the resonator duct when the cover element is fitted to the base element.