Method for determining the fill time of a transmission clutch
US5580332A · kind A · utility
44Cited by
86References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1995 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Apr 13, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/062
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention is directed toward determining when a clutch of an automatic transmission substantially fills with fluid. Once it is accurately determined when a clutch fills with fluid, then control over the transmission shifting may reliably be performed. The present invention determines when an on-coming speed clutch substantially fills with fluid in response to determining when an off-going speed clutch releases. Further, the present invention determines when an on-coming direction clutch substantially fills with fluid in response to determining when the torque converter output torque suddenly changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.