Torque converter clutch with low back pressure
US9309956B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2012 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Nov 1, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2045/0294
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A torque converter includes an impeller shell and a backing plate defining at least a portion of a first hydraulic chamber, a cover and a piston plate defining at least a portion of a second hydraulic chamber, and a third hydraulic chamber. The third chamber is sealed from the first and second hydraulic chambers such that a hydraulic flow between the third chamber and the other chambers is at least restricted. In an example embodiment, the first chamber is for being pressurized to prevent cavitation in the turbine, stator, or impeller, the second or third chamber is for being pressurized to engage the lockup clutch, and the other of the second or third chamber is for being de-pressurized to reduce a back pressure on the lockup clutch piston plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.