Torque converter provided with lock-up clutch and arranged for efficient heat dissipation
US6662918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2002 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Aug 21, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2045/021
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A torque converter provided with a lock-up clutch and including a pump impeller, a turbine runner, a turbine hub, a stator, a clutch piston rotatable with the turbine runner and cooperating with the pump impeller to define an engaging chamber, a front cover cooperating with the clutch piston to define a releasing chamber and a friction member attached to the front cover, and wherein the lock-up clutch is placed in a slipping state for slipping engagement between the clutch piston and the front cover through the friction member, by a controlled difference between pressures of a working fluid in the engaging and releasing chambers, and the pump impeller and the stator cooperate to define of a first and a second fluid passage both of which communicate with the engaging chamber, while the stator and the turbine hub cooperate with each other to define the other of the first and second fluid passages, and wherein the lock-up clutch is brought into the slipping state with a supply flow of the fluid into the engaging chamber through the first fluid passage and a discharge flow of the fluid from the engaging chamber through the second fluid passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.