Shift control system for automatic transmission
US5303614A · kind A · utility
17Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Sep 30, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0255
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission shift control system controls a line pressure for initiating a shift of an automatic transmission so that a duration between initiation of the shift and termination of a torque decline during the shift falls within a predetermined shift initiation time period. Also, a line pressure is controlled by the system for terminating a shift of the automatic transmission so that a duration between termination of a torque decline and termination of the shift falls within a predetermined shift termination time period. Both of the line pressures are used in a following shift control of the automatic transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.