Control system for automatic transmission, including coordinated frictional engagement element release control
US5947856A · kind A · utility
23Cited by
7References
17Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 3, 1997 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jul 3, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0485
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control system for an automatic transmission, in which a first frictional engagement element and a second frictional engagement element are released according to a shift from a running range to a non-running range. The shift from the running range to the non-running range is detected, and the reduction in the oil pressure of the second frictional engagement element is controlled on the basis of the reduction in the oil pressure of the first frictional engagement element when the shift from the running range to the non-running range is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.