Shift control of continuously-variable transmission
US6909953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2003 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Sep 24, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2306/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A toroidal continuously-variable transmission shift control apparatus includes a controlling section to control an actual transmission ratio toward a target transmission ratio by producing a control command in one of a forward traveling control mode for a forward vehicle traveling state, and a reverse traveling control mode; and a control modifying section arranged to select one of the forward traveling control mode and the reverse traveling control mode in accordance with a first parameter representing a driver's intention. The control modifying section is configured to detect a change of the vehicle traveling direction in accordance with a second parameter which is the actual transmission ratio, and to modify the shift control of the toroidal continuously-variable transmission so as to shift the actual transmission ratio to a speed decreasing side upon detection of the change of the vehicle traveling direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.