Shift control apparatus for continuously variable transmission
US6244986A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Aug 27, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2302/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A shift control apparatus of a continuously variable transmission for a vehicle comprises sensors for detecting operating conditions of the transmission and a motor connected to the transmission. A controller of the shift control apparatus stores different shift maps and employs one of them according to a driver's command or vehicle driving condition. The controller decides a target value of an input rotation speed of the transmission from an output rotation speed of the transmission and the load condition of a motor on the basis of the shift map and continuously changes a gear ratio of the transmission so that the transmission input rotation speed is adjusted to the target value. The controller can change the rate of the shift speed indicative of a time period of a gear ratio changing operation according to a driver's command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.