Method for controlling automatic transmission downshift phases
US6360155B1 · kind B1 · utility
5Cited by
0References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 9, 2000 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Feb 9, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0081
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for controlling automatic transmission downshift phases. The method determines conditions in which the downshift passes from normal operating conditions based on predetermined passage laws to special downshift operating conditions, and senses the passage to the special operating conditions. On sensing the passage to the special operating conditions, downshifting is effectuated by passing from the current gear ratio to a lower gear ratio, and blocking the lower gear ratio until the special downshift operating conditions disappear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.