Electronic shift control for automatic transmissions
US5117710A · kind A · utility
23Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1991 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Jan 25, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1926
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A shift control device of an automatic transmission causes the transmission to be forcedly shifted to a parking range or a neutral range when the shift ranges indicated by a shift instruction signal produced by a range selector and a current shift range signal produced by a detector are not coincident with each other. After such a forced shift, the shift control device tries to shift the transmission once again as formerly instructed by the range selector, and it is detected once again whether the shift ranges indicated by the current shift range signal and the shift instruction signal coincide with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.