Torque converter with fixed stator and method of controlling rotation of a turbine and pump in a torque converter
US7794358B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2007 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Feb 28, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2045/002
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of transitioning a torque converter from torque conversion mode to lock-up mode, and a torque converter. The method includes rotationally fixing stator blades to a non-rotatable stator shaft; partially engaging a torque converter clutch to transmit torque from a housing to a turbine at a first speed ratio between the turbine and the housing; disengaging a pump clutch at a second speed ratio between the turbine and the housing, the pump clutch arranged to transmit torque from the housing to the pump; and fully engaging the torque converter clutch at a third speed ratio between the housing and the turbine. The second ratio can be less than a ratio for a coupling point. The torque converter has torque converter and pump clutches, a non-rotatable stator, and a connection point between a turbine and hub, at least partially radially aligned with an inner ring for the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.