Torque converter and hydrokinetic torque coupling device having turbine-piston lockup clutch, and related methods
US9599206B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Mar 21, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2045/0278
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydrodynamic torque coupling device with lockup clutch is provided that includes an impeller, an axially displaceable turbine-piston, and a stop feature. The turbine-piston includes a turbine-piston shell and a turbine-piston flange. The turbine-piston is axially displaceable relative to the impeller to move an engagement surface region of the turbine-piston towards and away from an engagement surface region of the impeller for positioning the torque converter respectively into and out of a lockup mode. When the turbine-piston is out of the lockup mode, a fluid passageway connecting a torus chamber to a damper chamber extends between the engagement surface regions and between flow restriction surface regions of the turbine-piston and impeller. At a maximum axial displacement position out of lockup mode, a gap between the engagement surface regions is greater than a gap between the flow restriction surface regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.