Noise vibration harshness reduction assembly and methods, an axial ring configured to attenuate sound inducing vibrations
AssigneeGM Global Technology Operations LLC
InventorsSen J. Zhou, Pavan Kumar Patruni, Venu G. Ganti, Craig D. Reynolds, Dhanasekar Baladhandapani, Hung-Yih I. Du
Life of this patent
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Abstract
A noise vibration harshness reduction assembly includes a housing, a component, and an axial ring. The component is supported via the housing and movable relative to the housing. The axial ring is disposed axially along the component. The axial ring is configured to attenuate axial sound inducing vibrations in response to operation of the component.
Claims20
A noise vibration harshness reduction assembly comprising:
- a housing that defines a hole along a central axis;
- a component supported via the housing and movable relative to the housing, wherein:
- the component includes a bearing disposed in the hole;
- the bearing includes a first race fixed to the housing and a second race rotatable relative to the first race about the central axis;
- the first race of the bearing includes a radial side that faces away from the central axis and an axial side disposed transverse to the radial side such that the radial side and the axial side are adjacent to each other;
- the housing includes a shoulder that extends along the radial side of the bearing and extends along the axial side of the bearing;
- and
- the housing includes an axial wall that faces the axial side of the bearing;
- and
- an axial ring disposed axially along the bearing of the component relative to the central axis, and wherein:
- the axial ring includes an axial body disposed axially along the first race relative to the central axis;
- the axial body of the axial ring includes a plurality of axial corrugations;
- and
- the axial corrugations engage the axial side of the bearing and the axial wall of the housing to stabilize the bearing when a low load is applied axially to the bearing;
- and
- the axial ring is configured to attenuate axial sound inducing vibrations in response to operation of the component.
A method of utilizing an axial ring and a radial ring to attenuate axial and radial sound inducing vibrations in response to operation of a component inside of a housing, wherein the axial ring is disposed transverse to the radially ring along the component, the method comprising:
- selecting a torque applied to the radial ring;
- determining a stiffness of the radial ring based on a stiffness-torque curve utilizing the selected torque to attenuate radial sound in response to operation of the component;
- determining a stiffness of the axial ring based on an axial load and the selected torque of the radial ring;
- manufacturing the radial ring that meets the determined stiffness of the radial ring;
- manufacturing the axial ring that meets the determined stiffness of the axial ring;
- manufacturing a profile of the component at a torque range higher than the selected torque applied to the radial ring;
- and
- disposing the axial ring axially along the component to attenuate axial sound in response to operation of the component.
Dependencies are inferred from the claim text.