Vibration damper in a hydraulic friction clutch actuation system of a motor vehicle
AssigneeRaicam Driveline S.R.L.
InventorsFrancesca Botto, Jean-Baptiste Bedrignans, Mattia Rossi
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Abstract
A pressure wave damper in a hydraulic system for actuating a friction clutch of a motor vehicle, which defines a sinuous path for a fluid of the hydraulic system is provided. The pressure wave damper, along the sinuous path, has a hydraulic pressure chamber elastically expandable by the fluid. The hydraulic pressure chamber is partially delimited by a resilient wall that is presented by a resilient vessel inside the hydraulic pressure chamber. An elastically compressible air chamber is formed inside the resilient vessel. One or more air channels place the air chamber in communication with air vent openings.
Claims11
A pressure wave damper in a hydraulic system for actuating a friction clutch of a motor vehicle, the pressure wave damper comprising:
- a housing having a cavity,
- a first hydraulic connection for fluidically connecting the cavity with a master cylinder of the hydraulic system,
- a second hydraulic connection for fluidically connecting the cavity with a secondary cylinder of the hydraulic system,
- a sinuous path for a fluid of the hydraulic system within the cavity between the first and second hydraulic connections, and
- a hydraulic pressure chamber, delimited at least in part by a resilient wall and located at least in part along said sinuous path, the hydraulic pressure chamber being elastically expandable by the fluid along said sinuous path;
- wherein
- the resilient wall is provided by a resilient vessel contained within the hydraulic pressure chamber,
- an air chamber is formed inside the resilient vessel, and wherein
- at least one air channel establishes an air communication between the air chamber and at least one air vent formed through the housing.
Dependencies are inferred from the claim text.