Method for controlling an automatic transmission gear ratio shifts
US6459977B1 · kind B1 · utility
4Cited by
4References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 9, 2000 |
| Grant date | Oct 1, 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 blocking and releasing gear ratios in a vehicle equipped with an automatic gear box. The process includes combined functions F1, F2, F3 in which F1 is a function for blocking a passage of a transmission ratio during a first time delay, F2 is a function for blocking passage of a ratio in response to an instability of a fuel throttle opening angle, and F3 is a function for blocking passage of a ratio in response to a deceleration of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.