Automatic transmission control system for automobiles
US5816950A · kind A · utility
6Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Mar 31, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/60
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission control system including a hydraulic pressure control circuit which supplied locking and unlocking pressure to selectively lock and unlock the selected friction coupling elements so as to change a torque transmission path in the transmission gear mechanism and thereby to provide desired gears, a specific one of which is achieved by locking and unlocking simultaneously specific friction coupling elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.