Magnetorheological piston and damper
AssigneeDelphi Technologies, Inc.
InventorsSaiman Lun, Randall L. Hofmann, Ilya Lisenker
Life of this patent
Estimating the term…
Abstract
A magnetorheological piston includes a body having a substantially magnetically energizable passageway and a substantially magnetically non-energizable passageway. The substantially magnetically non-energizable passageway has a valveless passageway throat and has a flow cross-sectional area which has a minimum at the passageway throat and which is larger away from the passageway throat. A magnetorheological damper includes a cylinder and the above-described magnetorheological piston, wherein the piston is positioned in, and slideably engages, the cylinder.
Claims4
A magnetorheological piston comprising a magnetorheological piston body having an electric coil, having a substantially magnetically energizable magnetorheological-fluid passageway adapted to be substantially magnetically energized by the electric coil and having a substantially magnetically non-energizable magnetorheological-fluid passageway spaced apart from the substantially magnetically energizable magnetorheological-fluid passageway, wherein the substantially magnetically non-energizable magnetorheological-fluid passageway has a valveless passageway throat and has a flow cross-sectional area which has a minimum at the passageway throat and which is larger away from the passageway throat, wherein the substantially magnetically non-energizable magnetorheological-fluid passageway is a valveless passageway, and wherein the substantially magnetically non-energizable magnetorheological-fluid passageway is bound on all sides by the magnetorheological piston body.
A magnetorheological piston comprising a magnetorheological piston body having an electric coil, having a substantially magnetically energizable magnetorheological-fluid passageway adapted to be substantially magnetically energized by the electric coil and having a substantially magnetically non-energizable magnetorheological-fluid passageway spaced apart from the substantially magnetically energizable magnetorheological-fluid passageway, wherein the substantially magnetically non-energizable magnetorheological-fluid passageway has a valveless passageway throat and has a flow cross-sectional area which has a minimum at the passageway throat and which is larger away from the passageway throat, wherein the substantially magnetically non-energizable magnetorheological-fluid passageway is a valveless passageway, wherein the magnetorheological piston body has a longitudinal axis, wherein the substantially magnetically energizable magnetorheological-fluid passageway is substantially coaxially aligned with the longitudinal axis, and wherein the substantially magnetically non-energizable magnetorheological-fluid passageway is disposed radially inward from the substantially magnetically energizable magnetorheological-fluid passageway.
A magnetorheological damper comprising a cylinder and a magnetorheological piston disposed within, and slideably engaging, the cylinder, wherein the magnetorheological piston includes a magnetorheological piston body having an electric coil, having a substantially magnetically energizable magnetorheological-fluid passageway adapted to be substantially magnetically energized by the electric coil and having a substantially magnetically non-energizable magnetorheological-fluid passageway spaced apart from the substantially magnetically energizable magnetorheological-fluid passageway, wherein the substantially magnetically non-energizable magnetorheological-fluid passageway has a valveless passageway throat and has a flow cross-sectional area which has a minimum at the passageway throat and which is larger away from the passageway throat, wherein the substantially magnetically non-energizable magnetorheological-fluid passageway is a valveless passageway, and wherein the substantially magnetically non-energizable magnetorheological-fluid passageway is bound on all sides by the magnetorheological piston body.
Dependencies are inferred from the claim text.