Transmission ratio control system for a continuously variable transmission
US5009127A · kind A · utility
9Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1989 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Oct 6, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/66259
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control system for a continuously variable transmission for a motor vehicle has a transmission ratio control valve for controlling the transmission ratio. The transmission ratio is controlled in accordance with a transmission ratio changing speed. The transmission ratio changing speed is corrected with a coefficient which is determined in accordance with desired transmission ratio changing speed and the difference between desired transmission ratio and actual transmission ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.