Method for controlling gear ratio of continuously variable transmission vehicle
US10352441B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 16, 2017 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Mar 1, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/6617
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for controlling a gear ratio of a continuously variable transmission vehicle includes: a step of detecting a position of a shift lever by a controller; a step of checking, by the controller, a gear ratio variation based on a difference between a desired stage gear ratio and a current gear ratio in a continuously variable transmission when the shift lever is detected to be positioned in a manual range; a step of calculating, by the controller, a gear ratio correction value based on a rate of change of engine RPM when the gear ratio variation is checked as being other than zero after the step of checking the gear ratio variation; and a step of correcting, by the controller, the gear ratio variation in response to the calculated gear ratio correction value after the calculation step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.