Transmission start-up control
US5267157A · kind A · utility
10Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1991 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Jun 3, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2312/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vehicle transmission system having shift lever control of synchronized couplers for selection of ranges of gears and electro-hydraulic powershift clutches for selection of a gear within the selected range is provided with controls for avoiding unexpected speeds or speed changes under certain conditions. On start-up, if the vehicle is stationary, a microprocessor automatically selects which powershift gear is effective, the selection being such that the start-up speed is as nearly uniform as possible within the limits imposed by the positions of the shift levers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.