Automatic transmission shift stabilization control
US5685799A · kind A · utility
33Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1996 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Jul 1, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/161
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control for an automatic transmission minimizes shift cycling between adjacent speed ratios due to non-ideal load conditions such as grade climbing and trailering. The control utilizes shift schedule data in formulating a determination of the ability of the vehicle to maintain current levels of performance if an upshift were to occur and inhibits such upshifts where the determination so indicates an inability to meet the criteria.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.