Speed change control method for an automotive automatic transmission
US5618243A · kind A · utility
21Cited by
8References
19Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 19, 1994 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Jul 19, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S477/904
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control section for controlling a gearshift position changeover mechanism of an automatic transmission includes a downshift determination section for determining whether or not a downshift on descending roads is required, and a downshift command section for outputting a downshift command signal when it is determined that downshift is necessary. The downshift determination section is provided with a learning correction section for effecting a learning correction of a determination reference based on a manipulation characteristic of a driver immediately after completion of downshift each time a downshift takes place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.