Torque converter clutch control valve system
US9341261B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2014 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Jul 14, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H41/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A torque converter clutch (TCC) control valve system for a motor vehicle transmission includes a dual valve assembly with a first exhaust line that opens to air and a TCC control valve assembly with a second exhaust line that opens to air. The TCC control valve assembly communicates with the dual valve assembly through a fluid line, and the TCC control valve assembly further communicates with a torque converter having a lockup clutch. When the lockup clutch is in a faulted open state, air is drawn into the dual valve assembly through the first exhaust line. The air flows through the dual valve assembly and from the dual valve assembly though the fluid line to portions of the TCC control valve assembly, and from the TCC control valve assembly to the torque converter. The air replaces hydraulic fluid in the torque converter, and the displaced hydraulic fluid from the torque converter exits through the second exhaust line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.