Method and apparatus for downshifting an automatic vehicle transmission
US10024424B2 · kind B2 · utility
1Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2014 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | Feb 22, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2306/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A multi-speed automatic vehicle transmission has an electronic control unit which permits multiple downshifts if certain conditions are satisfied. Such downshifts are direct and omit engagement and disengagement of one or more intermediate speed ratios. Multiple downshifting may allow the actual speed ratio to better match the ideal speed ratio, for example under heavy braking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.